diff --git a/.github/FUNDING.yml b/.github/FUNDING.yml deleted file mode 100644 index 8b814328..00000000 --- a/.github/FUNDING.yml +++ /dev/null @@ -1,3 +0,0 @@ -# These are supported funding model platforms - -patreon: thearjun diff --git a/.github/workflows/mkdocs.yml b/.github/workflows/mkdocs.yml deleted file mode 100644 index eedc5cea..00000000 --- a/.github/workflows/mkdocs.yml +++ /dev/null @@ -1,16 +0,0 @@ -name: Create Java notes site with MKDOCS -on: - push: - branches: - - master -jobs: - deploy: - runs-on: ubuntu-latest - steps: - - uses: actions/checkout@v2 - - uses: actions/setup-python@v2 - with: - python-version: 3.x - - run: - pip install mkdocs mkdocs-material mkdocs-macros-plugin - - run: mkdocs gh-deploy --force diff --git a/.gitignore b/.gitignore deleted file mode 100644 index 2e25ac36..00000000 --- a/.gitignore +++ /dev/null @@ -1,152 +0,0 @@ - -# Created by https://www.toptal.com/developers/gitignore/api/python -# Edit at https://www.toptal.com/developers/gitignore?templates=python - -### Python ### -# Byte-compiled / optimized / DLL files -__pycache__/ -*.py[cod] -*$py.class - -# C extensions -*.so - -# Distribution / packaging -.Python -build/ -develop-eggs/ -dist/ -downloads/ -eggs/ -.eggs/ -parts/ -sdist/ -var/ -wheels/ -pip-wheel-metadata/ -share/python-wheels/ -*.egg-info/ -.installed.cfg -*.egg -MANIFEST - -# PyInstaller -# Usually these files are written by a python script from a template -# before PyInstaller builds the exe, so as to inject date/other infos into it. -*.manifest -*.spec - -# Installer logs -pip-log.txt -pip-delete-this-directory.txt - -# Unit test / coverage reports -htmlcov/ -.tox/ -.nox/ -.coverage -.coverage.* -.cache -nosetests.xml -coverage.xml -*.cover -*.py,cover -.hypothesis/ -.pytest_cache/ -pytestdebug.log - -# Translations -*.mo -*.pot - -# Django stuff: -*.log -local_settings.py -db.sqlite3 -db.sqlite3-journal - -# Flask stuff: -instance/ -.webassets-cache - -# Scrapy stuff: -.scrapy - -# Sphinx documentation -docs/_build/ -doc/_build/ - -# PyBuilder -target/ - -# Jupyter Notebook -.ipynb_checkpoints - -# IPython -profile_default/ -ipython_config.py - -# pyenv -.python-version - -# pipenv -# According to pypa/pipenv#598, it is recommended to include Pipfile.lock in version control. -# However, in case of collaboration, if having platform-specific dependencies or dependencies -# having no cross-platform support, pipenv may install dependencies that don't work, or not -# install all needed dependencies. -#Pipfile.lock - -# poetry -#poetry.lock - -# PEP 582; used by e.g. github.com/David-OConnor/pyflow -__pypackages__/ - -# Celery stuff -celerybeat-schedule -celerybeat.pid - -# SageMath parsed files -*.sage.py - -# Environments -# .env -.env/ -.venv/ -env/ -venv/ -ENV/ -env.bak/ -venv.bak/ -pythonenv* - -# Spyder project settings -.spyderproject -.spyproject - -# Rope project settings -.ropeproject - -# mkdocs documentation -/site - -# mypy -.mypy_cache/ -.dmypy.json -dmypy.json - -# Pyre type checker -.pyre/ - -# pytype static type analyzer -.pytype/ - -# operating system-related files -*.DS_Store #file properties cache/storage on macOS -Thumbs.db #thumbnail cache on Windows - -# profiling data -.prof - -# End of https://www.toptal.com/developers/gitignore/api/python -git.sh diff --git a/.nojekyll b/.nojekyll new file mode 100644 index 00000000..e69de29b diff --git a/404.html b/404.html new file mode 100644 index 00000000..5c403d05 --- /dev/null +++ b/404.html @@ -0,0 +1,1357 @@ + + + + + + + + + + + + + + + + Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Adding and Removing Controls ?

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    +
  • To include a control in a window, you must add it to the window.
    • +
  • To do this, you must crate an instance of the desired control and then add it to a Window by calling add (), which is defined by Container class.
    • +
+

Syntax

+

Component add (Component ComponentRef);

+

AWT Controls

+
    +
  • Once a component has been added it will be automatically visible whenever its parent window is displayed.
    • +
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To remove

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    +
  • void remove(Component ComponentRef);
    • +
  • void removeAll();
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Checkbox

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  • A Checkbox is a control that is used to turn an option on or off.
    • +
  • It consists of a small box tha can either contain a checkmark or not.
    • +
  • There is a Label associated with each check box that describes what option the box represents.
    • +
  • Can change the state of a Checkbox by clicking on it.
    • +
+

## Constructors: + 1. Checkbox() throws HeadlessException + 2. Checkbox(String str) throws HeadlessException + 3. Checkbox(String str, boolean on) throws HeadlessException + 4. Checkbox(String str, boolean on, CheckboxGroup cbGroup) throws HeadlessException + 5. Checkbox(String str, CheckboxGroup cbGroup, boolean on) throws HeadlessException

+

## Methods + 1. boolean getState(); + 2. void setState(boolean on); + 3. String getLabel(); + 4. void setLabel(String str);

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Button

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  • The most widely used control is the push button. A push button is a Component that contains a label and that generates an event when it is pressed. Push buttons are objects of type button. Button defines these two constructors:
    • +
+

## Constructors + 1. public Button() + 2. public Button(String buttonLabel) throws headless Exception;

+

## Public Methods + 1. public String getLabel(); + - Get the label of this button instance.

+
    +
  1. public void setLabel(String btnlabel);
    2. +
  2. +

    Set the label of this button instance.

    +
    3. +
  3. +

    public void setEnable(boolean enable);

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    4. +
  4. Enable or disable this Button. Disabled Button cannot be clicked.
    5. +
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+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/checkBoxGroup/CheckboxGroupDemo.java b/AWT/checkBoxGroup/CheckboxGroupDemo.java similarity index 100% rename from notes/AWT/checkBoxGroup/CheckboxGroupDemo.java rename to AWT/checkBoxGroup/CheckboxGroupDemo.java diff --git a/AWT/checkBoxGroup/index.html b/AWT/checkBoxGroup/index.html new file mode 100644 index 00000000..30f7c7a6 --- /dev/null +++ b/AWT/checkBoxGroup/index.html @@ -0,0 +1,1407 @@ + + + + + + + + + + + + + + + + + + CheckboxGroup - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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CheckboxGroup

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  • It is possible to create a set if mutually exclusive check boxes in which one and only one checkbox in the group can be checked at any one time.
    • +
  • Also known as radio button.
    • +
+

Constructors

+

CheckboxGroup();

+

Methods

+
    +
  1. Checkbox getSelectedCheckbox();
    2. +
  2. void setSelectedCheckbox(Checkbox which);
    3. +
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+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/choice/ChoiceDemo.java b/AWT/choice/ChoiceDemo.java similarity index 100% rename from notes/AWT/choice/ChoiceDemo.java rename to AWT/choice/ChoiceDemo.java diff --git a/AWT/choice/index.html b/AWT/choice/index.html new file mode 100644 index 00000000..a7d2ae2e --- /dev/null +++ b/AWT/choice/index.html @@ -0,0 +1,1388 @@ + + + + + + + + + + + + + + + + + + Choice - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Choice

+
+

Same as Select in HTML + - The Choice class is used to create a pop-up list of items from which user may choose. + - Only one item can be chosen.

+
+

## Constructors: + Choice();

+

## Methods: + 1. void add(String name); + 2. String getSelectedItem(); + 3. int getSelectedIndex(); + 4. int getItemCount(); + 5. void select(String name); + 6. String getItem(int index);

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+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/dialog/DialogDemo.java b/AWT/dialog/DialogDemo.java similarity index 100% rename from notes/AWT/dialog/DialogDemo.java rename to AWT/dialog/DialogDemo.java diff --git a/notes/AWT/frame/FlowLayout.java b/AWT/frame/FlowLayout.java similarity index 100% rename from notes/AWT/frame/FlowLayout.java rename to AWT/frame/FlowLayout.java diff --git a/notes/AWT/frame/FrameDemo.java b/AWT/frame/FrameDemo.java similarity index 100% rename from notes/AWT/frame/FrameDemo.java rename to AWT/frame/FrameDemo.java diff --git a/notes/AWT/frame/FrameDemoOne.java b/AWT/frame/FrameDemoOne.java similarity index 100% rename from notes/AWT/frame/FrameDemoOne.java rename to AWT/frame/FrameDemoOne.java diff --git a/notes/AWT/frame/closeAbleFrame/FrameCloseDemo.java b/AWT/frame/closeAbleFrame/FrameCloseDemo.java similarity index 100% rename from notes/AWT/frame/closeAbleFrame/FrameCloseDemo.java rename to AWT/frame/closeAbleFrame/FrameCloseDemo.java diff --git a/AWT/frame/closeAbleFrame/index.html b/AWT/frame/closeAbleFrame/index.html new file mode 100644 index 00000000..b6f3c301 --- /dev/null +++ b/AWT/frame/closeAbleFrame/index.html @@ -0,0 +1,1379 @@ + + + + + + + + + + + + + + + + + + Closeable Frame - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Closeable Frame

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    +
  • It is possible to implement the close button of any frame orwindow in java application.
    • +
  • By default, the close button of the frame is not in working state.
    • +
  • The close button of the frame has to be set for the closing operation.
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+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/general/Input.java b/AWT/general/Input.java similarity index 100% rename from notes/AWT/general/Input.java rename to AWT/general/Input.java diff --git a/notes/AWT/general/SampleApp.java b/AWT/general/SampleApp.java similarity index 100% rename from notes/AWT/general/SampleApp.java rename to AWT/general/SampleApp.java diff --git a/AWT/index.html b/AWT/index.html new file mode 100644 index 00000000..cec9749f --- /dev/null +++ b/AWT/index.html @@ -0,0 +1,1481 @@ + + + + + + + + + + + + + + + + + + Event, Event Handling & AWT/Swing - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Event, Event Handling & AWT/Swing

+

Also called javafx JFx

+

AWT ( abstract window toolkit)

+
    +
  • AWT contains large numbers of classes and methods that allows you to create and manage graphical user interface(GUI) such as windows, buttons, scrollbars,textblocks ,etc.
    • +
  • The awt was designed to provide a common set of tools for GUI design that could work on a variety of platforms.
    • +
  • The tools provided by the awt are implemented using each platforms native GUI toolkit, hence preserving the look and feel of each platform. It is an advantage of awt. But the disadvantage of such an approach is that GUI designed on one platform may look different when displayed on another platform.
    • +
  • Awt is the foundation upon which swing is made.
    • +
+

AWT Hierarchy

+

Awt Hierarchy

+

Component

+
    +
  • The component is an abstract class that encapsulates all the attributes of a visual Components.
    • +
  • Except for menus, all user interface elements that are displayed on the screen and that interact with the user of subclasses of Component.
    • +
  • A Component object is responsible for remembering the current foreground and background colors and the currently selected text font.
    • +
+

Container

+
    +
  • The Container class is a subclass of Component class.
    • +
  • It has additional methods that allow other Component objects to be nested within it.
    • +
  • Other Container objects can be stored inside a Container(Since they are themselves an instance of Component).
    • +
  • This makes for a multilevel containment system.
    • +
  • A Container is responsible for laying out i.e. positioning any components that it contains. It does thus throw the use of various layout manager.
    • +
+

Panel

+
    +
  • The panel is the Container that does not contain a title bar, menu bars, border.
    • +
  • It can have other components like button text field, etc. The panel is the superclass for the applet.
    • +
  • This is why you don't see title bar, menu bar or border when an applet is run inside a browser. When you run an applet using an applet viewer, the applet viewer provides the title and border.
    • +
  • Other components can be added to a Panel objects by its add() method. Once this components have been added, you can position and resize them manually using the setLocation(), setSize(), setBounds(), etc.
    • +
+

Window

+
    +
  • The Window is the Container that has no borders and menu bars.
    • +
  • The Window class creates a top level window.
    • +
  • A top level window is not contained within any other object. Generally, you won't create a Window object directly. Instead, you will use a subclass of Window called Frame.
    • +
+

Frame

+
    +
  • The frame has a title bar, menu bar, borders and resizing corners.
    • +
  • The precise look of a frame will differ from the environment.
    • +
  • The frame is a Container that contains several different components like button, title, text field, label etc.
    • +
  • In Java, most of the awt application is created using the frame window.
    • +
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+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/label/Alignment.java b/AWT/label/Alignment.java similarity index 100% rename from notes/AWT/label/Alignment.java rename to AWT/label/Alignment.java diff --git a/notes/AWT/label/LabelDemo.java b/AWT/label/LabelDemo.java similarity index 100% rename from notes/AWT/label/LabelDemo.java rename to AWT/label/LabelDemo.java diff --git a/notes/AWT/label/LabelDemoOne.java b/AWT/label/LabelDemoOne.java similarity index 100% rename from notes/AWT/label/LabelDemoOne.java rename to AWT/label/LabelDemoOne.java diff --git a/AWT/label/index.html b/AWT/label/index.html new file mode 100644 index 00000000..98fcfbd2 --- /dev/null +++ b/AWT/label/index.html @@ -0,0 +1,1414 @@ + + + + + + + + + + + + + + + + + + Labels - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Labels

+
    +
  • Labels are passive controls that do not support any interaction with the user i.e. no event handling.
    • +
  • A label is an object of type Label and it contains a String, which it displays.
    • +
  • Label defines the following constructors:
    +i. Label() throws HeadLessException
    +ii. Label(String str) throws HeadLessException // The string is left justified.
    +iii. Label(String str, int how) throws HeadLessException // label.LEFT, label.RIGHT
    • +
+

👉Methods

+

i. void setText(String str);
+ii. String getText();
+iii. void setAlignment(int how);
+iv. int getAlignment();

+

Example

+
    Label name = new Label("Arjun");
+    name.setText("Another Arjun");
+    String myNameWas = name.getText();
+
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+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/layout/GridBagLayout/GridBagConstraintsDemo.java b/AWT/layout/GridBagLayout/GridBagConstraintsDemo.java similarity index 100% rename from notes/AWT/layout/GridBagLayout/GridBagConstraintsDemo.java rename to AWT/layout/GridBagLayout/GridBagConstraintsDemo.java diff --git a/notes/AWT/layout/GridBagLayout/StagesOfLife.java b/AWT/layout/GridBagLayout/StagesOfLife.java similarity index 100% rename from notes/AWT/layout/GridBagLayout/StagesOfLife.java rename to AWT/layout/GridBagLayout/StagesOfLife.java diff --git a/AWT/layout/GridBagLayout/index.html b/AWT/layout/GridBagLayout/index.html new file mode 100644 index 00000000..cf9a4a01 --- /dev/null +++ b/AWT/layout/GridBagLayout/index.html @@ -0,0 +1,1400 @@ + + + + + + + + + + + + + + + + + + GridBag Layout - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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GridBag Layout

+
    +
  • A flexible layout manager that arranges components in a grid with a variable sized cells.
    • +
  • The GridBagLayout class is flexible Layout manager that aligns components vertically and horizontally and the components of different size.
    • +
  • Each GridBagLayout object maintains a dynamic, rectangular grid of cells.
    • +
  • Each Component is managed by a GridBagLayout is associated with an instance of GridBagConstraints.
    • +
  • We use to set constraints :
    void setConstraints(Component c, GridBagConstraints cons);
+
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+

Constructor

+

1.GridBagLayout();

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+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/layout/GridLayout/Directions.java b/AWT/layout/GridLayout/Directions.java similarity index 100% rename from notes/AWT/layout/GridLayout/Directions.java rename to AWT/layout/GridLayout/Directions.java diff --git a/notes/AWT/layout/GridLayout/GridLayoutDemo.java b/AWT/layout/GridLayout/GridLayoutDemo.java similarity index 100% rename from notes/AWT/layout/GridLayout/GridLayoutDemo.java rename to AWT/layout/GridLayout/GridLayoutDemo.java diff --git a/notes/AWT/layout/GridLayout/TwelveButtons.java b/AWT/layout/GridLayout/TwelveButtons.java similarity index 100% rename from notes/AWT/layout/GridLayout/TwelveButtons.java rename to AWT/layout/GridLayout/TwelveButtons.java diff --git a/AWT/layout/GridLayout/index.html b/AWT/layout/GridLayout/index.html new file mode 100644 index 00000000..e8cda935 --- /dev/null +++ b/AWT/layout/GridLayout/index.html @@ -0,0 +1,1396 @@ + + + + + + + + + + + + + + + + + + Grid Layout - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Grid Layout

+
    +
  • A container using the GridLayout scheme arranges components in rows and colums in row major order. Each component is sized to fit its respective grid cell.
    • +
+

Constructors

+

a. GridLayout()
+b. GridLayout(int rows, int cols)
+c. GridLayout(int rows, int cols, int hgap, int vgap)

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+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/layout/borderLayout/BorderDemo.java b/AWT/layout/borderLayout/BorderDemo.java similarity index 100% rename from notes/AWT/layout/borderLayout/BorderDemo.java rename to AWT/layout/borderLayout/BorderDemo.java diff --git a/notes/AWT/layout/borderLayout/BorderLayoutDemo.java b/AWT/layout/borderLayout/BorderLayoutDemo.java similarity index 100% rename from notes/AWT/layout/borderLayout/BorderLayoutDemo.java rename to AWT/layout/borderLayout/BorderLayoutDemo.java diff --git a/AWT/layout/borderLayout/index.html b/AWT/layout/borderLayout/index.html new file mode 100644 index 00000000..4ff392e1 --- /dev/null +++ b/AWT/layout/borderLayout/index.html @@ -0,0 +1,1400 @@ + + + + + + + + + + + + + + + + + + Border Layout - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Border Layout

+
    +
  • The BorderLayout manager arranges components within specified regions of container.
    • +
  • Valid regions are : "North", "South", "East", "West" & "Center".
    • +
+

Constructor

+
    +
  • BorderLayout()
    • +
  • BorderLayout(int hgap, int vgap)
    + Eg: add(new Button("North"), BorderLayout.WEST) + add("North", new Button("West") )
    • +
+ + +
+
+
+ +
+ + + +
+
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+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/layout/cardLayout/CardLayoutDemo.java b/AWT/layout/cardLayout/CardLayoutDemo.java similarity index 100% rename from notes/AWT/layout/cardLayout/CardLayoutDemo.java rename to AWT/layout/cardLayout/CardLayoutDemo.java diff --git a/AWT/layout/cardLayout/index.html b/AWT/layout/cardLayout/index.html new file mode 100644 index 00000000..ea1856b5 --- /dev/null +++ b/AWT/layout/cardLayout/index.html @@ -0,0 +1,1412 @@ + + + + + + + + + + + + + + + + + + Card Layout - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Card Layout

+
    +
  • Makes each component as large as the container and diplays only one at a time.
    • +
+

Constructors

+
    +
  1. CardLayout ()
    2. +
  2. CardLayout (int hgap, int vgap)
    3. +
+

Methods

+
    +
  1. void first (Container deck)
    2. +
  2. void last (Container deck)
    3. +
  3. void next (Container deck)
    4. +
  4. void previous (Container deck)
    5. +
  5. void show (Container deck, String cardName)
    6. +
+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/layout/flowLayout/FlowLayoutDemo.java b/AWT/layout/flowLayout/FlowLayoutDemo.java similarity index 100% rename from notes/AWT/layout/flowLayout/FlowLayoutDemo.java rename to AWT/layout/flowLayout/FlowLayoutDemo.java diff --git a/AWT/layout/flowLayout/index.html b/AWT/layout/flowLayout/index.html new file mode 100644 index 00000000..2deeae08 --- /dev/null +++ b/AWT/layout/flowLayout/index.html @@ -0,0 +1,1383 @@ + + + + + + + + + + + + + + + + + + FlowLayout - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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FlowLayout

+
    +
  • Arranges components like words on a page - From left to right in rows and then top to bottom as each row fills up.
    • +
+

## Constructors + 1. FlowLayout() + 2. FlowLayout(int align) + 3. FlowLayout(int align, int hgape, int vgape)

+

## FlowLayout Alignments +FlowLayout.LEFT, FlowLayout.RIGHT, FlowLayout.CENTER

+ + +
+
+
+ +
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+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/AWT/layout/index.html b/AWT/layout/index.html new file mode 100644 index 00000000..4be22404 --- /dev/null +++ b/AWT/layout/index.html @@ -0,0 +1,1390 @@ + + + + + + + + + + + + + + + + + + LayoutManager - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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LayoutManager

+
    +
  • LayoutManager are provided to arrange GUI components on a container for presentation purpose.
    • +
  • Each Container object has a LayoutManager interface.
    • +
  • A layout Manager is an instance of any class that implements the LayoutManager interface
    • +
  • The layout manager is set by the setLayout() method.
    • +
  • If no call is setLayout() is made, then the default layout manager is used that is FlowLayout.
    • +
+

## Types of LayoutManager + 1. FlowLayout + 2. BorderLayout + 3. GridLayout + 4. CardLayout + 5. GridBagLayout

+

### Two ways to create a Frame in AWT : + 1. By extending Frame Class. (Inheritance) + 2. By creating the object of Frame class. (Association)

+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/list/ListDemo.java b/AWT/list/ListDemo.java similarity index 100% rename from notes/AWT/list/ListDemo.java rename to AWT/list/ListDemo.java diff --git a/AWT/list/index.html b/AWT/list/index.html new file mode 100644 index 00000000..0d4c87d6 --- /dev/null +++ b/AWT/list/index.html @@ -0,0 +1,1395 @@ + + + + + + + + + + + + + + + + + + List - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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List

+
    +
  • The List class provides a compact, multiple-choice scrolling selection list.
    • +
+

## Constructors + 1. List() throws HeadlessException + 2. List(int numRows) throws HeadlessException + 3. List( int numRows, boolean multipleSelect) throws HeadlessException

+
+

numRows number of rows will be visible, if false, then only one item may be selected.

+
+

## Methods + 1. void add(String name); + 2. void add(String name , int index); + 3. String getSelectedItem() + - for single selection + 5. int getSelectedIndex() + 6. String[] getSelectedItems()
+ - for multiple selection + 8. int[] getSelectedIndexes() + 9. int getItemCount(); + 10. void select(int index);

+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/menu/MenuDemo.java b/AWT/menu/MenuDemo.java similarity index 100% rename from notes/AWT/menu/MenuDemo.java rename to AWT/menu/MenuDemo.java diff --git a/notes/AWT/scrollBar/ScrollbarDemo.java b/AWT/scrollBar/ScrollbarDemo.java similarity index 100% rename from notes/AWT/scrollBar/ScrollbarDemo.java rename to AWT/scrollBar/ScrollbarDemo.java diff --git a/AWT/scrollBar/index.html b/AWT/scrollBar/index.html new file mode 100644 index 00000000..d8561000 --- /dev/null +++ b/AWT/scrollBar/index.html @@ -0,0 +1,1392 @@ + + + + + + + + + + + + + + + + + + Scrollbar - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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Scrollbar

+
    +
  • Scrollbar is used to select continuous values between a specified minimum and maximum.
    • +
  • May be oriented horizontally or vertically.
    • +
  • It contain slider box that can be dragged by the uset to a new position.
    • +
+

# Constructors + 1. Scrollbar() throws HeadlessException + 2. Scrollbar(int style) throws HeadlessException
+- Style includes Scrollbar.VERTICAL and Scrollbar.HORIZONTAL.

+
    +
  1. Scrollbar(int style, int thumbSize, int min, int max) throws HeadlessException
    2. +
+

# Methods: + 1. void setValues(int initialValue, int thumbSize, int min, int max); + 2. int getValue() + 3. void setValue(int newValue) + 4. int getMinimum() + 5. int getMaximum()

+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/textArea/TextAreaDemo.java b/AWT/textArea/TextAreaDemo.java similarity index 100% rename from notes/AWT/textArea/TextAreaDemo.java rename to AWT/textArea/TextAreaDemo.java diff --git a/AWT/textArea/index.html b/AWT/textArea/index.html new file mode 100644 index 00000000..2f86c397 --- /dev/null +++ b/AWT/textArea/index.html @@ -0,0 +1,1415 @@ + + + + + + + + + + + + + + + + + + TextArea - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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TextArea

+
+

Sub class of TextComponent

+
+
    +
  • Sometimes a single line of text input is not enough for a given task. To handle this situation, the awt includes a simple multiline editor called TextArea.
    • +
+

## Constructors + 1. TextArea() throws HeadlessException + 2. TextArea(int numLines, int numChars) throws HeadlessException + 3. TextArea(String str) throws HeadlessException + 4. TextArea(Stirng str, int numLines, numChars) throws HeadlessException + 5. TextArea(String str, int numLines,int numChars, int sBars) throws HeadlessException

+
+

Here, numLines represents rows and numChars represents number of columns. sBars is Scroll Bar to use scrollbar in the TextArea.

+
+

SCROLLBARS_BOTH, SCROLLBARS_NONE, SCROLLBARS_HORIZONTAL_ONLY, SCROLLBARS_VERTICAL_ONLY

+

Public Methods: + 1. String getText() + 2. void setText() + 3. String getSelectedText() + 4. void select(int startIndex, int endIndex) + 5. boolean isEditable() + 6. void setEditable( boolean canEdit)

+
+

These methods are defined by TextComponent
+TextComponent class is the superclass of TextField and TextArea
+So, both TextFieldand TextArea can use these methods.

+
+

TextArea adds the following editing methods: + 1. void append(String str) + - The append() method appends the strings specified by str to the end of the current text.

+
    +
  1. void insert(String str , int index)
    2. +
  2. +

    insert() method inserts the string passed in str at the specified index.

    +
    3. +
  3. +

    void replaceRange(String sr, int startIndex , int endIndex)

    +
    4. +
  4. To replace text, replaceRange() replaces the characters from startIndex to endIndex-1, with the replacement text passed in str.
    5. +
+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/textField/InputInformation.java b/AWT/textField/InputInformation.java similarity index 100% rename from notes/AWT/textField/InputInformation.java rename to AWT/textField/InputInformation.java diff --git a/notes/AWT/textField/TextFieldDemo.java b/AWT/textField/TextFieldDemo.java similarity index 100% rename from notes/AWT/textField/TextFieldDemo.java rename to AWT/textField/TextFieldDemo.java diff --git a/AWT/textField/index.html b/AWT/textField/index.html new file mode 100644 index 00000000..e928fdc4 --- /dev/null +++ b/AWT/textField/index.html @@ -0,0 +1,1430 @@ + + + + + + + + + + + + + + + + + + TextField - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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TextField

+

The TextField class implements a single line text entry area ususally called an edit control.

+

TextField allow the user to enter strings and to edit the text using the arrow keys, cut and paste keys and mouse selection.

+

## Constructors + 1. public TextField(String initialText, int columns) + - Construct a TextField instance with the given initial text string with the number of column

+
    +
  1. public TextField(String strText);
    2. +
  2. +

    Set the text display text on this TextField instance

    +
    3. +
  3. +

    public TextField(int columns);

    +
    4. +
  4. Construct s TextField instance with number of columns
    5. +
+

## Public Methods + 1. boolean isEditable()

+
    +
  1. public String getText();
    2. +
  2. +

    Get the current text on this TextField instance

    +
    3. +
  3. +

    public void setText(String strText)

    +
    4. +
  4. +

    Set this display text on this TextField instance

    +
    5. +
  5. +

    public void setEditable(boolean editable);

    +
    6. +
  6. +

    Set the TextField to editable (read/ write) or non editable (read- only)

    +
    7. +
  7. +

    void setEchoChar(char ch)

    +
    8. +
  8. Change the content of generally password into
    + OR
    + there may be times when you will want the user to enter text that is not displayed, such as a password. You can disable the echoing of the characters as they are typed by calling this method.
    9. +
  9. +

    If ch is 0, then normal echoing is restored.
    +TextField password = new TextField();
    +password.setEchoChar("*")

    +
    10. +
  10. +

    boolean echoCharIsSet();

    +
    11. +
  11. +

    Return ture or false whether the TextField is set with some char

    +
    12. +
  12. +

    char getEchoChar();

    +
    13. +
  13. Return the character which was set in the TextField.
    14. +
+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/CNAME b/CNAME new file mode 100644 index 00000000..bd5ee371 --- /dev/null +++ b/CNAME @@ -0,0 +1 @@ +java.adhikariarjun.com.np \ No newline at end of file diff --git a/CODE_OF_CONDUCT.md b/CODE_OF_CONDUCT.md deleted file mode 100644 index 43017ab8..00000000 --- a/CODE_OF_CONDUCT.md +++ /dev/null @@ -1,94 +0,0 @@ -# Citizen Code of Conduct - -## 1. Purpose - -A primary goal of Java is to be inclusive to the largest number of contributors, with the most varied and diverse backgrounds possible. As such, we are committed to providing a friendly, safe and welcoming environment for all, regardless of gender, sexual orientation, ability, ethnicity, socioeconomic status, and religion (or lack thereof). - -This code of conduct outlines our expectations for all those who participate in our community, as well as the consequences for unacceptable behavior. - -We invite all those who participate in Java to help us create safe and positive experiences for everyone. - -## 2. Open [Source/Culture/Tech] Citizenship - -A supplemental goal of this Code of Conduct is to increase open [source/culture/tech] citizenship by encouraging participants to recognize and strengthen the relationships between our actions and their effects on our community. - -Communities mirror the societies in which they exist and positive action is essential to counteract the many forms of inequality and abuses of power that exist in society. - -If you see someone who is making an extra effort to ensure our community is welcoming, friendly, and encourages all participants to contribute to the fullest extent, we want to know. - -## 3. Expected Behavior - -The following behaviors are expected and requested of all community members: - - * Participate in an authentic and active way. In doing so, you contribute to the health and longevity of this community. - * Exercise consideration and respect in your speech and actions. - * Attempt collaboration before conflict. - * Refrain from demeaning, discriminatory, or harassing behavior and speech. - * Be mindful of your surroundings and of your fellow participants. Alert community leaders if you notice a dangerous situation, someone in distress, or violations of this Code of Conduct, even if they seem inconsequential. - * Remember that community event venues may be shared with members of the public; please be respectful to all patrons of these locations. - -## 4. Unacceptable Behavior - -The following behaviors are considered harassment and are unacceptable within our community: - - * Violence, threats of violence or violent language directed against another person. - * Sexist, racist, homophobic, transphobic, ableist or otherwise discriminatory jokes and language. - * Posting or displaying sexually explicit or violent material. - * Posting or threatening to post other people's personally identifying information ("doxing"). - * Personal insults, particularly those related to gender, sexual orientation, race, religion, or disability. - * Inappropriate photography or recording. - * Inappropriate physical contact. You should have someone's consent before touching them. - * Unwelcome sexual attention. This includes, sexualized comments or jokes; inappropriate touching, groping, and unwelcomed sexual advances. - * Deliberate intimidation, stalking or following (online or in person). - * Advocating for, or encouraging, any of the above behavior. - * Sustained disruption of community events, including talks and presentations. - -## 5. Weapons Policy - -No weapons will be allowed at Java events, community spaces, or in other spaces covered by the scope of this Code of Conduct. Weapons include but are not limited to guns, explosives (including fireworks), and large knives such as those used for hunting or display, as well as any other item used for the purpose of causing injury or harm to others. Anyone seen in possession of one of these items will be asked to leave immediately, and will only be allowed to return without the weapon. Community members are further expected to comply with all state and local laws on this matter. - -## 6. Consequences of Unacceptable Behavior - -Unacceptable behavior from any community member, including sponsors and those with decision-making authority, will not be tolerated. - -Anyone asked to stop unacceptable behavior is expected to comply immediately. - -If a community member engages in unacceptable behavior, the community organizers may take any action they deem appropriate, up to and including a temporary ban or permanent expulsion from the community without warning (and without refund in the case of a paid event). - -## 7. Reporting Guidelines - -If you are subject to or witness unacceptable behavior, or have any other concerns, please notify a community organizer as soon as possible. arjunadhikari@protonmail.com. - - - -Additionally, community organizers are available to help community members engage with local law enforcement or to otherwise help those experiencing unacceptable behavior feel safe. In the context of in-person events, organizers will also provide escorts as desired by the person experiencing distress. - -## 8. Addressing Grievances - -If you feel you have been falsely or unfairly accused of violating this Code of Conduct, you should notify with a concise description of your grievance. Your grievance will be handled in accordance with our existing governing policies. - - - -## 9. Scope - -We expect all community participants (contributors, paid or otherwise; sponsors; and other guests) to abide by this Code of Conduct in all community venues--online and in-person--as well as in all one-on-one communications pertaining to community business. - -This code of conduct and its related procedures also applies to unacceptable behavior occurring outside the scope of community activities when such behavior has the potential to adversely affect the safety and well-being of community members. - -## 10. Contact info - -arjunadhikari@protonmail.com - -## 11. License and attribution - -The Citizen Code of Conduct is distributed by [Stumptown Syndicate](http://stumptownsyndicate.org) under a [Creative Commons Attribution-ShareAlike license](http://creativecommons.org/licenses/by-sa/3.0/). - -Portions of text derived from the [Django Code of Conduct](https://www.djangoproject.com/conduct/) and the [Geek Feminism Anti-Harassment Policy](http://geekfeminism.wikia.com/wiki/Conference_anti-harassment/Policy). - -_Revision 2.3. Posted 6 March 2017._ - -_Revision 2.2. Posted 4 February 2016._ - -_Revision 2.1. Posted 23 June 2014._ - -_Revision 2.0, adopted by the [Stumptown Syndicate](http://stumptownsyndicate.org) board on 10 January 2013. Posted 17 March 2013._ diff --git a/CONTRIBUTING.md b/CONTRIBUTING.md deleted file mode 100644 index fb88ad8b..00000000 --- a/CONTRIBUTING.md +++ /dev/null @@ -1,73 +0,0 @@ -# Contributing - -When contributing to this repository, please first discuss the change you wish to make via issue, -email, or any other method with the owners of this repository before making a change. - -Please note we have a code of conduct, please follow it in all your interactions with the project. - -## Code of Conduct - -### Our Pledge - -In the interest of fostering an open and welcoming environment, we as -contributors and maintainers pledge to making participation in our project and -our community a harassment-free experience for everyone, regardless of age, body -size, disability, ethnicity, gender identity and expression, level of experience, -nationality, personal appearance, race, religion, or sexual identity and -orientation. - -### Our Standards - -Examples of behavior that contributes to creating a positive environment -include: - -* Using welcoming and inclusive language -* Being respectful of differing viewpoints and experiences -* Gracefully accepting constructive criticism -* Focusing on what is best for the community -* Showing empathy towards other community members - -Examples of unacceptable behavior by participants include: - -* The use of sexualized language or imagery and unwelcome sexual attention or -advances -* Trolling, insulting/derogatory comments, and personal or political attacks -* Public or private harassment -* Publishing others' private information, such as a physical or electronic - address, without explicit permission -* Other conduct which could reasonably be considered inappropriate in a - professional setting - -### Our Responsibilities - -Project maintainers are responsible for clarifying the standards of acceptable -behavior and are expected to take appropriate and fair corrective action in -response to any instances of unacceptable behavior. - -Project maintainers have the right and responsibility to remove, edit, or -reject comments, commits, code, wiki edits, issues, and other contributions -that are not aligned to this Code of Conduct, or to ban temporarily or -permanently any contributor for other behaviors that they deem inappropriate, -threatening, offensive, or harmful. - -### Scope - -This Code of Conduct applies both within project spaces and in public spaces -when an individual is representing the project or its community. Examples of -representing a project or community include using an official project e-mail -address, posting via an official social media account, or acting as an appointed -representative at an online or offline event. Representation of a project may be -further defined and clarified by project maintainers. - -### Enforcement - -Instances of abusive, harassing, or otherwise unacceptable behavior may be -reported by contacting the project team at [INSERT EMAIL ADDRESS]. All -complaints will be reviewed and investigated and will result in a response that -is deemed necessary and appropriate to the circumstances. The project team is -obligated to maintain confidentiality with regard to the reporter of an incident. -Further details of specific enforcement policies may be posted separately. - -Project maintainers who do not follow or enforce the Code of Conduct in good -faith may face temporary or permanent repercussions as determined by other -members of the project's leadership. \ No newline at end of file diff --git a/JDBC/DIFFERENCES/index.html b/JDBC/DIFFERENCES/index.html new file mode 100644 index 00000000..733a9149 --- /dev/null +++ b/JDBC/DIFFERENCES/index.html @@ -0,0 +1,1414 @@ + + + + + + + + + + + + + + + + + + Difference between ODBC and JDBC - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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Difference between ODBC and JDBC

+

ODBC

+
+

1992, Open Database Connectivity

+
+
    +
  • Developed by Microsoft
    • +
  • Support any language
    • +
  • Only for Windows machine
    • +
  • Support any database
    • +
+

JDBC

+
+

1997, Java Database Connectivity +- Support any database +- Support any platform +- Only for Java language +- Developed by Sun Microsystems.

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Difference between Statement and Prepared Statement

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StatementPrepared Statement
At the time of creating Statement object, we are not required to provide any queryAt the time of creating Prepared Object, we have to provide SQL Query compulsary which can be send to the database and will be compiled.
Statemnt st = con.createStatement();PreparedStatement pst = con.prepareStatement(query);
Hence, Statement object is not associated with any query and we can use for multiple queries.Hence, Prepared Statement is associated with any query.
Whenever, we are using execute method, everytime query will be compiled.Whenever, we are using execute method, query won't be compiled every time.
Statement object can work only for static queries.Work for Static and Dynamic Queries
Relatively, performance is low.Relatively, performance is high.
Chance of SQL InjectionNo Chance of SQL Injection
Inserting data value and large object is difficult.Insering data value and large object is easy.
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JDBC Features

+
    +
  1. Standard API (Same for all DBMS)
    2. +
  2. Database Management API
    3. +
  3. Most of the JDBC driver are developed using Java, so they are platform independent.
    4. +
  4. Huge vendor support for JDBC.
    5. +
  5. Perform basic CRUD (Create, Read, Update & Delete) operation very easily.
    6. +
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JDBC Driver

+
    +
  • While communicating with database, we have to connect java calls into database specific calls and database specific calls into java cells. For this Driver software is required.
    • +
  • As per our analogy, driver software is a translator.
    • +
+
+

Progress Direct Software Company introduced Type-5 driver but is not industry standard driver.

+
+

Types of JDBC Driver

+
    +
  1. Type 1 Driver (JDBC-ODBC Bridge Driver)
    2. +
  2. Type 2 Driver (Native API-Partly Driver or Native Driver)
    3. +
  3. Type 3 Driver (All Java Net Protocol Driver or Network Protocol Driver or Middleware Driver)
    4. +
  4. Type 4 Driver (Pure Java Driver or Native Protocol or Thin Driver)
    5. +
+

Type 1 Driver

+
+

ODBC Supports all programming languages.

+
+

Driver 1

+

Type 2 Driver

+
+

Written in C, C++

+
+

Driver 2

+

Type 3 Driver

+
+

Three tiers

+
+

Driver 3

+

Type 4 Driver

+

Driver 4

+

Thick vs Thin Driver

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See in copy.

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Comparision

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PropertyType 1Type 2Type 3Type 4
ConversionFrom JDBC Calls to ODBC CallFrom JDBC Calls to Native Library CallFrom JDBC Calls to Middleware Server CallFrom JDBC Calls to Database specific Call
Implemented InOnly JavaJava and Native Langiages like C, C++Only JavaOnly Java
Architecture2 Tier2 Tier3 Tier2 Tier
Platform IndependentNoNoYesYes
Database IndependentYesNoYesNo
Thick or ThinThickThickThickThin
Also Known AsJDBC-ODBC Bridge DriverNative API-Partly Driver or Native DriverAll Java Net Protocol Driver or Network Protocol Driver or Middleware DriverPure Java Driver or Native Protocol or Thin Driver
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SQL Injection

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    +
  • SQL Injection is a code injection technique that might destory your database.
    • +
  • SQL Injection usually occurs when you ask a user for input, like their username and instead of username, the user gives you an SQL statement that you will unknowingly run on your database.
    • +
  • SQL Injection can be prevented by using prepared statement.
    • +
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Steps to Develop JDBC Application

+

Steps

+
    +
  1. +

    Load and Register driver class.
    +Class.forName("Oracle.jdbc.OracleDriver");

    +
    2. +
  2. +

    Establish Conection
    +Connection con = Driver.Manager.getConnection( url , DbUsername , DbPassword ) ;

    +
    3. +
  3. Creation of statement Object
    +Statement st = con.createStatement();
    4. +
  4. Send and Execute SQL Query
    +Result rs = st.executeQuery("Select * from employees");
    5. +
  5. +

    Process Result from ResultSet

    +
    while(rs.next())
+{
+    System.out.Println(rs.getInt(1));
+}
+
    +
    6. +
  6. +

    Close connection + con.close();

    +
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+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/JDBC/TypesOfSQLCommands/index.html b/JDBC/TypesOfSQLCommands/index.html new file mode 100644 index 00000000..50a23497 --- /dev/null +++ b/JDBC/TypesOfSQLCommands/index.html @@ -0,0 +1,1482 @@ + + + + + + + + + + + + + + + + + + Types of SQL Commands - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Types of SQL Commands

+
    +
  1. DDL(Data Definition Language)
    +CREATE TABLE, ALTER, DROP
    2. +
  2. DQL(Data Query Language)
    +SELECT
    3. +
  3. DCL(Data Control Language)
    +ALTER, PASSWORD, GRANT ACCESS
    4. +
  4. DML(Data Manipulation Language)
    +INSERT, DELETE, UPDATE
    5. +
  5. (Data Administration)
    +START AUDIT
    6. +
  6. (Data Transaction)
    +COMMIT, ROLLBACK, SAVEPOINT
    7. +
+

What should I know as Java Developer ?

+

Select Queries(DQL)

+
+

Returns Result Set

+
+

Non-Select Queries(DML)

+
+

Returns Numeric Value

+
+

Methods to Execute SQL Query

+
    +
  1. executeQuery()
    2. +
  2. +

    To execute SELECT queries.

    +
    public result executeQuery(String sqlQuery) throws SQLException
+
    +

    Eg:

    +
    Result rs = st.executeQuery("SELECT * FROM employess");
+while(rs.next()){
+    System.out.println(" ID : " rs.getInt(1));
+}
+
    +
    3. +
  3. +

    executeUpdate()

    +
    4. +
  4. Applicable for non-select operation(DML) +public int executeUpdate(String sqlQuery) throws SQLException
    5. +
+

Eg:

+
    int affectedRow = st.executeUpdate("INSERT INTO employees(`id`) VALUES ('1')");
+
+

Returns the afftected rows.

+
    +
  1. execute()
    2. +
  2. For both SELECT and NON-SELECT operations.
    3. +
  3. If you don't know SQL query until run-time, we can use execute().
    4. +
  4. Return type => boolean
    + -> True - SELECT Query
    + -> false - Non-SELECT Query
    +public boolean execute (String query) throws SQLException
    5. +
+

Eg:

+
    boolean b = st.execute(Dynamically provide SQLQuery);
+    if(b == true) {
+        ResultSet rs = st.getResultSet();
+    }
+    else
+    {
+        int rowCount = st.getUpdateCount();
+    }
+
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+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/JDBC/index.html b/JDBC/index.html new file mode 100644 index 00000000..483fcbf3 --- /dev/null +++ b/JDBC/index.html @@ -0,0 +1,1378 @@ + + + + + + + + + + + + + + + + + + Java Database Connetivity (JDBC) - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Java Database Connetivity (JDBC)

+
    +
  • JDBC is a speification (Guidelines) defined by Java vendor and implemented by Database vendor.
    • +
  • Database vendor provided implementation is called Driver Software.
    • +
+ + +
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+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/JDBC/lib/mysql-connector-java-8.0.15.jar b/JDBC/lib/mysql-connector-java-8.0.15.jar similarity index 100% rename from notes/JDBC/lib/mysql-connector-java-8.0.15.jar rename to JDBC/lib/mysql-connector-java-8.0.15.jar diff --git a/notes/JDBC/src/com/gces/jdbc/DataEntry.java b/JDBC/src/com/gces/jdbc/DataEntry.java similarity index 100% rename from notes/JDBC/src/com/gces/jdbc/DataEntry.java rename to JDBC/src/com/gces/jdbc/DataEntry.java diff --git a/notes/JDBC/src/com/gces/jdbc/DataEntryDemo.java b/JDBC/src/com/gces/jdbc/DataEntryDemo.java similarity index 100% rename from notes/JDBC/src/com/gces/jdbc/DataEntryDemo.java rename to JDBC/src/com/gces/jdbc/DataEntryDemo.java diff --git a/notes/JDBC/src/com/gces/jdbc/DeleteData.java b/JDBC/src/com/gces/jdbc/DeleteData.java similarity index 100% rename from notes/JDBC/src/com/gces/jdbc/DeleteData.java rename to JDBC/src/com/gces/jdbc/DeleteData.java diff --git a/notes/JDBC/src/com/gces/jdbc/Election.java b/JDBC/src/com/gces/jdbc/Election.java similarity index 100% rename from notes/JDBC/src/com/gces/jdbc/Election.java rename to JDBC/src/com/gces/jdbc/Election.java diff --git a/notes/JDBC/src/com/gces/jdbc/SalaryUpdate.java b/JDBC/src/com/gces/jdbc/SalaryUpdate.java similarity index 100% rename from notes/JDBC/src/com/gces/jdbc/SalaryUpdate.java rename to JDBC/src/com/gces/jdbc/SalaryUpdate.java diff --git a/notes/JDBC/src/com/gces/jdbc/Students.java b/JDBC/src/com/gces/jdbc/Students.java similarity index 100% rename from notes/JDBC/src/com/gces/jdbc/Students.java rename to JDBC/src/com/gces/jdbc/Students.java diff --git a/notes/JDBC/src/com/gces/jdbc/Test.java b/JDBC/src/com/gces/jdbc/Test.java similarity index 100% rename from notes/JDBC/src/com/gces/jdbc/Test.java rename to JDBC/src/com/gces/jdbc/Test.java diff --git a/notes/JDBC/src/com/gces/jdbc/UpdateManagerSalary.java b/JDBC/src/com/gces/jdbc/UpdateManagerSalary.java similarity index 100% rename from notes/JDBC/src/com/gces/jdbc/UpdateManagerSalary.java rename to JDBC/src/com/gces/jdbc/UpdateManagerSalary.java diff --git a/LICENSE b/LICENSE deleted file mode 100644 index f195ca66..00000000 --- a/LICENSE +++ /dev/null @@ -1,21 +0,0 @@ -MIT License - -Copyright (c) 2019 Arjun - -Permission is hereby granted, free of charge, to any person obtaining a copy -of this software and associated documentation files (the "Software"), to deal -in the Software without restriction, including without limitation the rights -to use, copy, modify, merge, publish, distribute, sublicense, and/or sell -copies of the Software, and to permit persons to whom the Software is -furnished to do so, subject to the following conditions: - -The above copyright notice and this permission notice shall be included in all -copies or substantial portions of the Software. - -THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR -IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, -FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE -AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER -LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, -OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE -SOFTWARE. diff --git a/README.md b/README.md deleted file mode 100644 index 351da594..00000000 --- a/README.md +++ /dev/null @@ -1,8 +0,0 @@ -# Java Notes - -> Run Locally on Computer - -``` -pip install -r requirements.txt -mkdocs serve -``` diff --git a/applet/EXAMPLES/index.html b/applet/EXAMPLES/index.html new file mode 100644 index 00000000..593002aa --- /dev/null +++ b/applet/EXAMPLES/index.html @@ -0,0 +1,1818 @@ + + + + + + + + + + + + + + + + + + + + Examples on Applet - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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+
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+ + +
+
+ + + + + + + + +

General

+ +

Passing Parameter

+
    +
  • Demonstrate the passing of parameters in Applet File.
    • +
+
HTML File
+
<html>
+
+<head>
+    <title>Passing Parameter to Applet</title>
+</head>
+
+<body>
+    <applet code="ParamDemo.java" height = "300" width = "300">
+        <param name="fontName" value="Comic Sans MS">
+        <param name="fontSize" value="40">
+        <param name="leadingfontName" value="14.80">
+        <param name="active" value="true">
+    </applet>
+</body>
+
+</html>
+
+
Java File
+
import java.applet.*;
+import java.awt.*;
+
+// Following HTML chunk will pass parameter to Applet. This is comment for Java Compiler but not for appletviewer, so altering the attribute of parameter never compell to recompile again.
+
+/*/
+    <applet code = "ParamDemo" height = "500" width = "500">
+        <param name = "fontName" value = "Comic Sans MS">
+        <param name = "fontSize" value = "40">
+        <param name = "leading" value = "14.80">
+        <param name = "active" value = "true">
+    </applet>
+*/
+public class ParamDemo extends Applet {
+    String fontName;
+    String param;
+    int fontSize;
+    float leading;
+    boolean active;
+
+    public void init() {
+
+        // Param is not used here because to get the String value and again to pass to String, no temp variable (param) is needed.
+        fontName = getParameter("fontName");
+        if (fontName == null) {
+            fontName = "Not Specified";
+        }
+
+        // Param is used as temporary String variable which retrieves the parameter passed.
+
+        param = getParameter("fontSize");
+        try {
+            if (param != null) {
+                fontSize = Integer.parseInt(param); // Converts the number in String to Integer data type.
+            } else {
+                fontSize = 0;
+            }
+        } catch (NumberFormatException exc) {
+            fontSize = 0;
+        }
+
+        param = getParameter("leading");
+        try {
+            if (param != null) {
+                leading = Float.valueOf(param).floatValue(); // Converts the number in String to Float data type.
+            } else {
+                leading = 0f;
+            }
+        } catch (NumberFormatException exc) {
+            leading = 0f;
+        }
+        param = getParameter("active");
+        if (param != null) {
+            active = Boolean.valueOf(param).booleanValue(); // Converts the boolean value in String to Boolean data type.
+        }
+    }
+
+    public void paint(Graphics graphicsObject) {
+        graphicsObject.drawString("Font Name : " + fontName, 100, 50);
+        graphicsObject.drawString("Font Size : " + fontName, 100, 60);
+        graphicsObject.drawString("Leading : " + leading, 100, 70);
+        graphicsObject.drawString("Active : " + active, 100, 80);
+    }
+
+}
+
+

Display Available Fonts

+
    +
  • Display the available fonts in the system. +
    /* This shows the available fonts in Host Computer. */
+
+/* <applet code = "AvailableFonts" height ="300" width = "300" ></applet> */
+
+import java.awt.*;
+import java.applet.*;
+
+public class AvailableFonts extends Applet {
+    public void paint(Graphics g) {
+        String message = ""; // Initialize string to empty first.
+        String fontLists[];
+        /* I don't get the below line. */
+        GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
+        fontLists = ge.getAvailableFontFamilyNames();
+        for (String fontList : fontLists) {
+            message += fontList + "\n ";
+            g.drawString(message, 10, 20);
+        }
+    }
+}
+
    • +
+

Custom Font and Size

+
    +
  • Demonstrating applet with custom font text and size. +
    import java.awt.*;
+import java.applet.*;
+
+// This HTML chunk is for passing parameter to appletviewer.
+
+/*
+    <applet code = "Introduction" height = "200" width = "500">
+        <param name = "fontName" value = "Tahoma">
+        <param name = "fontSize" value = "16">
+        <param name = "title" value = "Introduction">
+        <param name = "message" value = " >> I read in Gandaki College of Information and Science.">
+    </applet>
+*/
+
+public class CustomFont extends Applet{
+    String param;
+    String fontName;
+    String title;
+    String message;
+    int fontSize;
+
+    // We are defining our custom font. So, font object is created.
+    Font myFont;
+
+
+    public void init()
+    {
+
+        fontName = getParameter("fontName");
+        if(fontName == null)
+        {
+            fontName = "TimesRoman";
+        }
+
+        title = getParameter("title");
+        if(title == null)
+        {
+            title = "Untitled";
+        }
+
+        message = getParameter("message");
+        if(message == null)
+        {
+            message = "Write your description here.";
+        }
+
+        param = getParameter("fontSize");
+        try{
+            if(param != null)
+            {
+                fontSize = Integer.parseInt(param);
+            }
+            else
+            {
+                fontSize = 10; // parameter pass garyo tara integer parse vayena vane
+            }
+        }catch(NumberFormatException exc)
+        {
+            fontSize = 15; // Parameter nai pass garena vane chahi yo run huncha
+        }
+    }
+
+    public void paint(Graphics g)
+    {
+        // Font object Syntax  : Font(font_name, Font.font_type, font_size);  
+
+        myFont = new Font(fontName,Font.BOLD,fontSize);
+        g.setFont(myFont); // Setting the defined font for this object.
+        setBackground(Color.red); // Setting background color.
+        setForeground(Color.white); // Setting foreground color.
+
+        g.drawString(title,20,50); 
+        myFont = new Font(fontName,Font.PLAIN,fontSize); // Defining new font-style for displaying message. 
+        g.setFont(myFont); // Setting the new font.
+        g.drawString(message,20,80);
+    }   
+}
+
    • +
+

Draw Nepali Flag

+
    +
  • Draw the Nepali Flag using the Applet and graphics. +
    import java.applet.*;
+import java.awt.*;
+
+/*
+    <applet code = "Flag" width = "500" height = "500"></applet>
+*/
+
+public class Flag extends Applet {
+
+    static Color NEPALIFLAG = new Color(221, 12, 39); // Defines custom color
+
+    public void paint(Graphics flag) {
+
+        // Figure starts from (210,10)
+
+        // For upper traingle
+        int upperTriangleX[] = { 210, 360, 210 }; // +150 for upper triangle
+        int upperTriangleY[] = { 10, 160, 160 };
+        // g.drawPolygon(upperTriangleX,upperTriangleY,3); // Also can be drawn like
+        // this.
+        Polygon upperTriangle = new Polygon(upperTriangleX, upperTriangleY, 3);
+        flag.drawPolygon(upperTriangle);
+        flag.setColor(NEPALIFLAG); // Setting color of our brave Gorkha Soldiers Blood
+        flag.fillPolygon(upperTriangle);
+
+        // For lower traingle
+        int lowerTriangleX[] = { 210, 390, 210 }; // +180 for lower triangle
+        int lowerTriangleY[] = { 160, 340, 340 };
+        Polygon lowerTriangle = new Polygon(lowerTriangleX, lowerTriangleY, 3);
+        flag.drawPolygon(lowerTriangle);
+        flag.setColor(NEPALIFLAG);
+        flag.fillPolygon(lowerTriangle);
+
+        // For standing rod
+        int rodX[] = { 207, 210, 210, 207 };
+        int rodY[] = { 7, 7, 500, 498 };
+        Polygon rod = new Polygon(rodX, rodY, 4);
+        flag.drawPolygon(rod);
+        flag.setColor(Color.black);
+        flag.fillPolygon(rod);
+
+        // For borders
+        int borderX[] = { 210, 210, 360, 210, 390, 210, 210, 396, 216, 366 }; // 3 units
+        int borderY[] = { 7, 10, 160, 160, 340, 340, 343, 343, 163, 163 };
+        Polygon border = new Polygon(borderX, borderY, 10);
+        flag.drawPolygon(border);
+        flag.setColor(Color.blue);
+        flag.fillPolygon(border);
+
+        // For moon
+        // One Oval overlaps other Oval to form a Crescent moon; I was unable to learn
+        // drawArc() at this moment.
+
+        flag.setColor(Color.white);
+        flag.fillOval(240, 100, 30, 30); // Synatx : fillOval(int xPosition, int yPosition, width, height)
+        flag.setColor(NEPALIFLAG);
+        flag.fillOval(240, 91, 30, 30);
+
+        // For star
+        int starX[] = { 240, 250, 255, 260, 270, 265, 270, 260, 255, 250, 240, 245 };
+        int starY[] = { 260, 260, 250, 260, 260, 270, 280, 280, 290, 280, 280, 270 }; // Starting is 240
+        Polygon star = new Polygon(starX, starY, 12);
+        flag.drawPolygon(star);
+        flag.setColor(Color.white);
+        flag.fillPolygon(star);
+    }
+}
+
    • +
+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/applet/HelloApplet.html b/applet/HelloApplet.html similarity index 100% rename from notes/applet/HelloApplet.html rename to applet/HelloApplet.html diff --git a/notes/applet/HelloApplet.java b/applet/HelloApplet.java similarity index 100% rename from notes/applet/HelloApplet.java rename to applet/HelloApplet.java diff --git a/applet/TUTORIAL/index.html b/applet/TUTORIAL/index.html new file mode 100644 index 00000000..dd7158e8 --- /dev/null +++ b/applet/TUTORIAL/index.html @@ -0,0 +1,1528 @@ + + + + + + + + + + + + + + + + + + Walk Through - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
+
+ +
+ + + + +
+ + +
+ +
+ + + + + + + + + +
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+ + + + + + +
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+ + + +
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+ + + +
+
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+ + +
+
+ + + + + + + + +

How to run an Applet?

+

There are two ways to run an applet :

+
    +
  1. By HTML file.
    2. +
  2. By appletViewer tool (for testing purpose).
    3. +
+

Simple example of Applet by HTML file:

+

To execute the applet by HTML file, create an applet and compile it. After that create an html file and place the applet code in HTML file. Now click the HTML file.

+
//HelloApplet.java  
+import java.applet.Applet;  
+import java.awt.Graphics;  
+public class HelloApplet extends Applet{  
+     public void paint(Graphics g){  
+        g.drawString("welcome",150,150);  
+    }
+
+}
+
+
+

Note:

+
+

Class must be public because its object is created by Java Plugin software that resides on the browser. +HelloApplet.html

+
<html>
+    <title>Applet's Demonstration</title>  
+    <body>  
+        <applet code="HelloApplet.class" width="300" height="300">  
+        </applet>  
+    </body>  
+</html>
+
+

Simple example of Applet by appletviewer tool:

+

To execute the applet by appletviewer tool, create an applet that contains applet tag in comment and compile it. After that run it by: appletviewer HelloApplet.java. Now HTML file is not required but it is for testing purpose only.

+
//HelloApplet.java  
+import java.applet.Applet;  
+import java.awt.Graphics;  
+public class HelloApplet extends Applet{  
+    public void paint(Graphics g){  
+        g.drawString("welcome to applet",150,150);  
+    }  
+}
+
+

To execute the applet by appletviewer tool, write in command prompt:

+
    c:\>javac HelloApplet.java  
+    c:\>appletviewer HelloApplet.java
+
+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/applet/displayingImage/DisplayImage.java b/applet/displayingImage/DisplayImage.java similarity index 100% rename from notes/applet/displayingImage/DisplayImage.java rename to applet/displayingImage/DisplayImage.java diff --git a/notes/applet/displayingImage/blue.jpg b/applet/displayingImage/blue.jpg similarity index 100% rename from notes/applet/displayingImage/blue.jpg rename to applet/displayingImage/blue.jpg diff --git a/applet/displayingImage/index.html b/applet/displayingImage/index.html new file mode 100644 index 00000000..f28981cf --- /dev/null +++ b/applet/displayingImage/index.html @@ -0,0 +1,1495 @@ + + + + + + + + + + + + + + + + + + Display Image - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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+ + +
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+ + + + + + + + +

Displying Image in Applet

+

Java will allow the applet to load the data holding the HTML file that started the applet (theDocumentBase) and the directory from which class file was loaded (codeBase). Both documentBase and codeBase return directories as URL object respectively.

+

Code

+
    +
  • We've assumed there is an image named blue.jpg. +
    import java.awt.*;
+import java.applet.*;
+/*
+    <applet code = "DisplayImage" height = "400" width = "400"></applet>
+*/
+
+public class DisplayImage extends Applet {
+
+    public Image picture;
+
+    public void init() {
+        picture = getImage(getDocumentBase(), "blue.jpg");
+    }
+
+    public void paint(Graphics g){
+        g.drawImage(picture,30,30,this);
+    }
+}
+
    • +
+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/applet/general/AvailableFonts.java b/applet/general/AvailableFonts.java similarity index 100% rename from notes/applet/general/AvailableFonts.java rename to applet/general/AvailableFonts.java diff --git a/applet/index.html b/applet/index.html new file mode 100644 index 00000000..4c271018 --- /dev/null +++ b/applet/index.html @@ -0,0 +1,1839 @@ + + + + + + + + + + + + + + + + + + Introduction - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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Applet Programming

+
    +
  • An applet is a Java program that runs in a web browser.
    • +
  • An applet is a Java class that extends the java.applet.Applet.
    • +
  • No main() method
    • +
  • Applet was designed to be embedded with a HTML page.
    • +
  • JVM is required to view an applet.
    • +
  • Applet have strict security rules that are enforced by the web browser.
    • +
+

Two types of Applet

+
    +
  1. Based on Applet class
    2. +
  2. These Applets use the Abstract Window Toolkit (AWT) to provide the graphical user interface (GUI).
    3. +
  3. The style of applet has been available since Java was first created.
    4. +
  4. Based on JApplet class
      +
    • They are based on the Swing class JApplet which inherits Applet.
      • +
    • Swing applet use the swing classes to provide the GUI.
      • +
    +
    5. +
+

Life Cycle of Applet

+

Life Cycle of Applet

+

Applet Initialization and Termination

+
    +
  • When an applet begins ,the following methods are called in this sequence :
    • +
  • init()
    • +
  • start()
    • +
  • paint() +Whenever an applet is terminated, the following sequence of methods calls takes place.
    • +
  • stop()
    • +
  • destroy()
    • +
+

Description :

+
    +
  1. init()
    2. +
  2. +

    The init( ) method is the first method to be called. This is where you should initialize variables. This method is called only once during the run time of your applet.

    +
    3. +
  3. +

    start()

    +
    4. +
  4. +

    The start( ) method is called after init( ). It is also called to restart an applet after it has been stopped. Whereas init( ) is called once—the first time an applet is loaded—start( ) is called each time an applet’s HTML document is displayed onscreen. So, if a user leaves a web page and comes back, the applet resumes execution at start( ).

    +
    5. +
  5. +

    paint()

    +
    6. +
  6. +

    The paint( ) method is called each time an AWT-based applet’s output must be redrawn. This situation can occur for several reasons. Whatever the applet must redraw its output, paint( ) method is called. The paint( ) method has one parameter of type Graphics.

    +
    7. +
  7. +

    stop()

    +
    8. +
  8. +

    The stop( ) method is called when a web browser leaves the HTML document containing the applet—when it goes to another page, for example. When stop( ) is called, the applet is probably running. You should use stop( ) to suspend threads that don’t need to run when the applet is not visible. You can restart them when start( ) is called if the user returns to the page.

    +
    9. +
  9. +

    destroy()

    +
    10. +
  10. The destroy( ) method is called when the environment determines that your applet needs to be removed completely from memory. At this point, you should free up any resources the applet may be using. The stop( ) method is always called before destroy( ).
    11. +
+

The HTML APPLET Tag

+

Syntax :

+
    <applet
+    [codebase = codebaseURL]
+    code = appletFile
+    [alt = alternateText]
+    [name = appletInstanceName]
+    width = pixels
+    height = pixels
+    [align = alignment]
+    [vspace = pixels]
+    [hspace = pixels]
+    >
+
+    [< PARAM NAME = attributeName VALUE = AttributeValue>]  >> Important for Exam 💯
+    [HTML Displayed in the absence of Java]
+
+    </applet>
+
+

Note : [ ] ⏩ Optional

+

CODEBASE

+
    +
  • It is an optional attribute that specifies the base URL of the applet code, which is the directory that will be searched for the applets executable class file.
    • +
  • The HTML Document URL Directory is used as the CODEBASE if this attribute is not specified.
    • +
+

CODE

+
    +
  • Code is the required attribute that gives the name of file containing compiled .class file. This file is related to the code base URL of the applet.
    • +
+

ALT

+
    +
  • The ALT tag is an alternate tag used to specify a short text message that should be displayed if the browser recognized the applet tag but can't currently run JAVA applet.
    • +
+

NAME

+
    +
  • NAME is an optional attribute used to specify a name for the applet instance. NAME attribute is used in order to communicate between applets on the same page.
    • +
+

WIDTH and HEIGHT

+
    +
  • WIDTH and HEIGHT are the required attributes that gives the size of the applet display area.
    • +
+

ALIGN

+
    +
  • ALIGN is an optional attribute that specifies the alignment of the applet. The possible values are LEFT, RIGHT, TOP, BOTTOM, MIDDLE, BASELINE, TEXTTOP, ABSMIDDLE (Absolute Middle) and ABSBOTTOM (Absolute Bottom).
    • +
+

VSPACE and HSPACE

+
    +
  • These attributes are optional.
    • +
  • VSPACE specifies the space in pixel and below the applet.
    • +
  • HSPACE specifies the space in pixel on each sides of the applet.
    • +
+

PARAM NAME and VALUE

+
    +
  • PARAMNAME is a tag used to specify applet specific arguments.
    • +
  • Applets access their attributes with the getParameter( )
    • +
+

Life Cycle of Applet

+
import java.applet.*;
+import java.awt.*;
+
+/*
+    <applet code = "LifeCycle.class" height = "300" width = "300">
+
+    </applet>
+*/
+
+public class LifeCycle extends Applet{
+    String message = "";
+
+    public void init(Graphics graphicsObject){
+        message += "Inside Init()     ";
+        graphicsObject.drawString(message, 100, 120);
+    }
+
+    public void start() {
+        message += "Inside Start()     ";
+    }
+
+    public void paint(Graphics graphicsObject) {
+        message += "Inside Paint()     ";
+        graphicsObject.drawString(message, 100, 120);
+    }
+
+    public void stop() {
+        message += "Inside Stop()     ";
+    }
+
+    public void destroy() {
+        message += "Inside Destroy()     ";
+    }
+}
+
+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/applet/lifeCycle/LifeCycle.java b/applet/lifeCycle/LifeCycle.java similarity index 100% rename from notes/applet/lifeCycle/LifeCycle.java rename to applet/lifeCycle/LifeCycle.java diff --git a/notes/applet/nepaliFlag/Flag.java b/applet/nepaliFlag/Flag.java similarity index 100% rename from notes/applet/nepaliFlag/Flag.java rename to applet/nepaliFlag/Flag.java diff --git a/notes/applet/passingParameter/ParamDemo.html b/applet/passingParameter/ParamDemo.html similarity index 100% rename from notes/applet/passingParameter/ParamDemo.html rename to applet/passingParameter/ParamDemo.html diff --git a/notes/applet/passingParameter/ParamDemo.java b/applet/passingParameter/ParamDemo.java similarity index 100% rename from notes/applet/passingParameter/ParamDemo.java rename to applet/passingParameter/ParamDemo.java diff --git a/notes/applet/passingParameter/customFontAndSize/CustomFont.java b/applet/passingParameter/customFontAndSize/CustomFont.java similarity index 100% rename from notes/applet/passingParameter/customFontAndSize/CustomFont.java rename to applet/passingParameter/customFontAndSize/CustomFont.java diff --git a/notes/applet/playingAudio/PlayAudio.java b/applet/playingAudio/PlayAudio.java similarity index 100% rename from notes/applet/playingAudio/PlayAudio.java rename to applet/playingAudio/PlayAudio.java diff --git a/applet/playingAudio/index.html b/applet/playingAudio/index.html new file mode 100644 index 00000000..2407dc3c --- /dev/null +++ b/applet/playingAudio/index.html @@ -0,0 +1,1527 @@ + + + + + + + + + + + + + + + + + + Play Audio - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
+
+ +
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+ + +
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Playing Audio in Applet

+

An applet can play an audio file represented by the AudioClip interface in the java.applet package. The AudioClip interface has three methods, including :
+public void play() − Plays the audio clip one time, from the beginning.
+public void loop() − Causes the audio clip to replay continually.
+public void stop() − Stops playing the audio clip.
+To obtain an AudioClip object, you must invoke the getAudioClip() method of the Applet class. The getAudioClip() method returns immediately, whether or not the URL resolves to an actual audio file. The audio file is not downloaded until an attempt is made to play the audio clip.

+

Code

+
    +
  • We've assumed there is an audio clip named sample.wav. +
    import java.awt.*;
+import java.net.*; // For URL objects
+import java.applet.*;
+
+/*
+    <applet code = "PlayAudio" height = "400" width = "400">
+        <param name = "audioURL" value = "sample.wav">
+    </applet>
+
+*/
+
+// AppletContext is an environment (interface) which helps to communicate with outer-environment and deal with media files such as audio, image.
+
+public class PlayAudio extends Applet {
+    public AudioClip myMusic; // Defining a variable of data type AudioClip.
+    public AppletContext context;
+
+    public void init() {
+        context = this.getAppletContext();
+        String audioURL = this.getParameter("audioURL"); // This gets the parameter passed from applet.
+        if (audioURL == null) {
+            audioURL = "sample.wav"; // If no parameter is passed.
+        }
+
+        try {
+            URL myURL = new URL(this.getDocumentBase(), audioURL); // New URL object storing audio URL passed by user.
+            myMusic = context.getAudioClip(myURL);
+            // myMusic = this.getAudioClip(myURL); // Also can be done like this.
+        } catch (MalformedURLException exc) {
+            exc.printStackTrace();
+            context.showStatus("Couldn't load audio file."); // Showing status to the Browser status bar.
+        }
+    }
+
+    public void start() { // When Applet starts
+        if (myMusic != null) {
+            myMusic.loop();
+        }
+    }
+
+    public void stop() { // When Applet stop
+        if (myMusic != null) {
+            myMusic.stop();
+        }
+    }
+}
+
    • +
+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/applet/playingAudio/sample.wav b/applet/playingAudio/sample.wav similarity index 100% rename from notes/applet/playingAudio/sample.wav rename to applet/playingAudio/sample.wav diff --git a/notes/array/alternativeArrayDeclaration.java b/array/alternativeArrayDeclaration.java similarity index 100% rename from notes/array/alternativeArrayDeclaration.java rename to array/alternativeArrayDeclaration.java diff --git a/notes/array/arrayAssignment.java b/array/arrayAssignment.java similarity index 100% rename from notes/array/arrayAssignment.java rename to array/arrayAssignment.java diff --git a/notes/array/arrayRepresentation01/arrayRepresentation01.java b/array/arrayRepresentation01/arrayRepresentation01.java similarity index 100% rename from notes/array/arrayRepresentation01/arrayRepresentation01.java rename to array/arrayRepresentation01/arrayRepresentation01.java diff --git a/array/arrayRepresentation01/index.html b/array/arrayRepresentation01/index.html new file mode 100644 index 00000000..31b6735c --- /dev/null +++ b/array/arrayRepresentation01/index.html @@ -0,0 +1,1495 @@ + + + + + + + + + + + + + + + + + + Array Representation 01 - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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+ + +
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+ + + + + + + + +

Array Representation 01

+

This representation of array shows how the memory blocks are allocated to the array. Value is not assigned to the memory blocks, though.

+

Array Representation

+

Source Code

+
class ArrayRepresentation {
+    public static void main(String[] args) {
+        // First the level of the array is pre-defined, and initial indearray of the
+        // array is mentioned in assignation.
+        int[][][] array = new int[2][][];
+
+        // First Level
+        array[0] = new int[3][];
+        array[1] = new int[2][];
+
+        // Second Level
+        array[0][0] = new int[1];
+        array[0][1] = new int[2];
+        array[0][2] = new int[3];
+
+        array[1][0] = new int[2];
+        array[1][1] = new int[2];
+
+        // In this way, the memory blocks are allocated and no memory leakage happens
+        // here.
+    }
+}
+
+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/array/arrayRepresentation02/arrayRepresentation02.java b/array/arrayRepresentation02/arrayRepresentation02.java similarity index 100% rename from notes/array/arrayRepresentation02/arrayRepresentation02.java rename to array/arrayRepresentation02/arrayRepresentation02.java diff --git a/array/arrayRepresentation02/index.html b/array/arrayRepresentation02/index.html new file mode 100644 index 00000000..85ee72d3 --- /dev/null +++ b/array/arrayRepresentation02/index.html @@ -0,0 +1,1543 @@ + + + + + + + + + + + + + + + + + + Array Representation 02 - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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Array Representation 02

+

This representation of array teaches how to allocate the memory block to the elements and assign the integer value to those memory blocks.

+

Array Representation 02

+

Source Code

+
// Let's Experience 5D Array 
+// www.github.com/thearjun/Java
+
+class ArrayRepresentation{
+    public static void main(String[] args){
+
+        // First Level
+        int[][][][][] array = new int [4][][][][];
+
+        // Second Level
+        array[0] = new int [1][][][];
+        array[1] = new int [1][][][];
+        array[2] = new int [1][][][];
+        array[3] = new int [3][][][];
+
+        // Third Level
+        array[0][0] = new int [2][][];
+        array[2][0] = new int [2][][];
+        array[3][0] = new int [1][][];
+
+        // Fourth Level
+        array[0][0][0] = new int [2][];
+        array[0][0][1] = new int [1][];
+
+        // Fifth Level
+        array[0][0][1][0] = new int [2];
+
+        // Value Assign for first level
+        array[0][0][0][0][0] = 1;
+        array[1][0][0][0][0] = 2;
+        array[2][0][0][0][0] = 3;
+        array[3][0][0][0][0] = 4;
+
+        // Value assign for second level
+        array[0][0][0][0][0] = 5;
+        array[1][0][0][0][0] = 13;
+        array[2][0][0][0][0] = 14;
+        array[3][0][0][0][0] = 18;
+        array[3][1][0][0][0] = 19;
+        array[3][2][0][0][0] = 20;
+
+        // Value assign for third level
+        array[0][0][0][0][0] = 6;
+        array[0][0][0][0][0] = 6;
+        array[2][0][0][0][0] = 15;
+        array[2][0][1][0][0] = 16;
+        array[3][0][0][0][0] = 17;
+
+        // Value assign for fourth level
+        array[0][0][0][0][0] = 8;
+        array[0][0][0][1][0] = 9;
+        array[0][0][1][0][0] = 10;
+
+        // Value assign for fifth level
+        array[0][0][1][0][0] = 11;
+        array[0][0][1][0][1] = 12;
+
+        // // Now we are printing the elements of array. We know that we haven't assigned 0 to any of those memory blocks, so we print the elements which are not zero.
+
+        // System.out.println("First Level Elements  : [ ");
+        // for(int i = 0; i < 4; i++){
+        //     System.out.println(array[i]+" ");
+
+        //     // if(array[i]!=0){
+        //     //     System.out.println(array[i]+" ");
+        //     // }
+        // }
+        // System.out.print("]");
+    }
+}
+
+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/array/arrays.java b/array/arrays.java similarity index 100% rename from notes/array/arrays.java rename to array/arrays.java diff --git a/notes/array/averageUsingArray.java b/array/averageUsingArray.java similarity index 100% rename from notes/array/averageUsingArray.java rename to array/averageUsingArray.java diff --git a/notes/array/conventional/conventionalWay.java b/array/conventional/conventionalWay.java similarity index 100% rename from notes/array/conventional/conventionalWay.java rename to array/conventional/conventionalWay.java diff --git a/array/conventional/index.html b/array/conventional/index.html new file mode 100644 index 00000000..2611b743 --- /dev/null +++ b/array/conventional/index.html @@ -0,0 +1,1391 @@ + + + + + + + + + + + + + + + + + + Index - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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Index

+ +

Conventional Way Of Declaring Array

+

Conventional Way of Declaring Array

+

This method of declaring array is often referred as conventional way of declaring array.

+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/array/doubleTwoDimesionalArray.java b/array/doubleTwoDimesionalArray.java similarity index 100% rename from notes/array/doubleTwoDimesionalArray.java rename to array/doubleTwoDimesionalArray.java diff --git a/array/extra/index.html b/array/extra/index.html new file mode 100644 index 00000000..ea19d7d8 --- /dev/null +++ b/array/extra/index.html @@ -0,0 +1,1711 @@ + + + + + + + + + + + + + + + + + + Examples - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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Array Examples

+

Arrays

+
class Array{
+    public static void main(String args[]){
+        int days[];
+        days = new int[12];
+        for(int i = 0; i<12;i++){
+            days[i] = i;
+        }
+        for(int i = 0; i<12;i++){
+            System.out.println("Day : "+days[i]);
+        }
+        System.out.println(days.getClass().getName());
+    }
+}
+
+

Alternate Array Declaration

+
class AlternativeArrayDeclaration{
+    public static void main(String args[]){
+        /* Array can be declared like : type_name[] variable_name; for eg: public static void main(String[] args) */
+        int a1[] = new int[3];
+        int[] a2 = new int[2];
+
+        /* We can also declare multiple arrays at a time by this method. */
+
+        int [] a3,a4,a5  = new int [3];
+        /* which creates the three array variables of integer type  */
+    }
+}
+
+

Array Assignment

+
class ArrayAssignment{
+    public static void main(String args[]){
+        int month[] = {1,2,3,4,5,6,7,8,9,10,11,12};
+        for(int i=0;i<12;i++){
+            System.out.println("Month : "+month[i]);
+        }
+    }
+}
+
+

Average Using Arrays

+
class Average{
+    public static void main(String args[]){
+        double marks[] = {40.6,30.5,90.3,20.8,87.5};
+        double result=0;
+
+        for(int i=0;i<5;i++){
+            result +=marks[i];
+        }
+        System.out.println("Percentage = "+result/5);
+    }
+}
+
+

Two Dimensional Array

+
class TwoDimensionalArray{
+    public static void main(String args[]){
+        int nums[][] = new int[4][5];
+
+        int i,j,k=0;
+        for (i=0;i<4;i++){
+            for(j=0;j<5;j++){
+                nums[i][j] = k;
+                k++;
+            }
+        }
+
+        for (i=0;i<4;i++){
+            for(j=0;j<5;j++){
+                System.out.print(nums[i][j]+" "); /* Print doesn't gets printed in new line , but println does. Know the difference. */
+            }
+            System.out.println();
+        }
+        System.out.println(nums.getClass().getName()); // This returns the class name for corressponding array type.
+    }
+}
+
+

Double Two Dimensional Array

+
class DoubleTwoDArray{
+    public static void main(String args[]){
+        double nums[][]= {
+                            {0.0,1.0,2.0},
+                            {3.0,4.0,5.0},
+                            {6.0,7.0,8,0}
+                        }; /* Two declare a two dimensional array, the last braces should be ended with braces as like Class in C++ . */
+        for(int i=0;i<3;i++){
+            for(int j=0;j<3;j++){
+                System.out.print(nums[i][j]+ " ");
+            }
+            System.out.println();
+        }
+    }
+}
+
+

Two Dimensional Array Manual Allocation

+
class TwoDArray{
+    public static void main(String args[]){
+        int nums[][] = new int[4][];
+        nums[0] = new int[1];
+        nums[1] = new int[2];
+        nums[2] = new int[3];
+        nums[3] = new int[4];
+        int k = 0;
+
+        for(int i=0;i<4;i++){
+            for(int j=0;i<i+1;j++){                
+                nums[i][j]=k;
+                k++;
+            }
+        }
+
+        for(int i=0;i<4;i++){
+            for(int j=0;i<i+1;j++){
+                System.out.print(nums[i][j] + " ");
+            }
+            System.out.println();
+        }
+    }
+}
+
+

Three Dimensional Array

+
class ThreeDimensionalArray{
+    public static void main(String args[]){
+        int nums[][][] = new int [3][3][3];
+        int l = 0;
+        for(int i=0;i<3;i++){
+            for(int j=0;j<3;j++){
+                for(int k=0;k<3;k++){
+                    nums[i][j][k] = l;
+                    l++;                    
+                }
+            }
+        }
+
+        for(int i=0;i<3;i++){
+            for(int j=0;j<3;j++){
+                for(int k=0;k<3;k++){
+                    System.out.print(nums[i][j][k]+" ");            
+                }
+                System.out.println();
+            }
+            System.out.println("\n");
+        }
+    }
+}
+
+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/array/index.html b/array/index.html new file mode 100644 index 00000000..2a2ecc10 --- /dev/null +++ b/array/index.html @@ -0,0 +1,1733 @@ + + + + + + + + + + + + + + + + + + Introduction - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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+ + +
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+ + + + + + + + +

Array

+

Java provides a data structure, the array, which stores a fixed-size sequential collection of elements of the same type. An array is used to store a collection of data, but it is often more useful to think of an array as a collection of variables of the same type.

+

Array is indexed collection of fixed number of homogeneous data element.

+

Advantages

+
    +
  • We can represent huge number of value using single variable. So, that readability of code will be improved.
    • +
  • Multiple data items of same data type can be accessed using single name.
    • +
  • Arrays can be used to implement matrices.
    • +
  • Data structure like queue , linked list can be accessed using arrays.
    • +
+

Downpoints

+
    +
  • Fixed in size
    • +
  • Since array is of fixed size, if we allocate more memory than requirement then the memory space will be wasted. And if we allocate less memory than requirement, then it will create problem.
    • +
  • The elements of array are stored in consecutive memory locations. So insertions and deletions are very difficult and time consuming.
    • +
  • Can only hold similar type of data. To overcome this, we use collection framework.
    • +
+

Declaration

+
int[] x;
+int []x;
+int x[];
+
+

One Dimensional Array

+
int[6] x; ❌ //  We cannot define size in declaration. So, we must specify in creation.
+
+String[] args; ✅ Best way
+String []args;
+String args[];
+
+

Two Dimensional Array

+
int[][]   x;
+int   [][]x;
+int[]   []x;
+int[]   x[];
+int   [][]x;
+int   []x[];
+
+

Instantiation

+
int[] x = new int[1000]; // fixed in size.
+
+

Initilization

+
int a[] = new int[5];//declaration and instantiation  
+a[0] = 10; 
+a[1] = 20;  
+a[2] = 70;  
+a[3] = 40;  
+a[4] = 50; 
+
+

Note

+
    +
  • Every Object in Java is object only.
    • +
  • For every array type, corresponding class are available but not available in programming level.
    • +
+
System.out.println(a.getClass().getName());
+
+ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
Array TypeCorresponding Class Name
int[ ][ I
int[ ][ ][ [ I
double[ ][ D
short[ ][ S
byte[ ][ B
boolean[ ][ Z
char[ ][ C
long[ ][ J
+

Examples

+
int[] a,b; -> 1D Array
+int[] a[],b[]; -> 2D Array
+int[] []a,b[]; -> 2D,3D Array
+int[] a[]b; -> 2D Array
+int[] []a,b; -> 2D Array
+int[][]a, []b; ❌ // [ ] can be shared with all, if it comes before variable.
+
+int[]x = new int[]; // ❌ Size should be mentioned.
+int[]x = new int[0]; ✅
+int[]x = new int[-2]; // ✅ Runtime error; though compiled.
+
+byte b = 20;
+int[] x = new int[b];
+int[] x = new int['b']; // Character ASCII gets inputed.
+
+

Internal Representation

+

Follwing way, we can know more about the internal representation of Arrays.

+
class InternalRepresentation {
+    public static void main(String[] args) {
+        // Integer[] array = new Integer[2];
+        int[] array = new int[2];
+        int[][] twoDArray = new int[2][2];
+        double itsDouble[] = new double[2];
+        short itsShort[] = new short[2];
+        byte itsByte[] = new byte[2];
+        boolean itsBoolean[] = new boolean[2];
+        char itsChar[] = new char[2];
+        long itsLong[] = new long[2];
+        System.out.println("Array : " + array.getClass().getName());
+        System.out.println("2D Array : " + twoDArray.getClass().getName());
+        System.out.println("Double : " + itsDouble.getClass().getName());
+        System.out.println("Short : " + itsShort.getClass().getName());
+        System.out.println("Byte : " + itsByte.getClass().getName());
+        System.out.println("Boolean : " + itsBoolean.getClass().getName());
+        System.out.println("Char : " + itsChar.getClass().getName());
+        System.out.println("Long : " + itsLong.getClass().getName());
+        // For every array type, corresponding class are available but not available in
+        // programming level.
+    }
+}
+
+ + +
+
+
+ +
+ + + +
+
+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/array/matrixRepresentation/index.html b/array/matrixRepresentation/index.html new file mode 100644 index 00000000..536b92a3 --- /dev/null +++ b/array/matrixRepresentation/index.html @@ -0,0 +1,1504 @@ + + + + + + + + + + + + + + + + + + Matrix Representation of Arrays - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
+ + + + Skip to content + + +
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Matrix Representation

+

Matrix Representation of Conventional Array

+

This type of array declaration is represented in matrix form. Memory wastage is most probable to happen in this scenario and manually unassigned blocks of memory are automatically assigned to zero.

+
class MatrixRepresentation {
+
+    public static void main(String[] args) {
+        int[][] x = new int[4][4];
+        x[0][0] = 10;
+        x[0][1] = 12;
+        x[0][2] = 99;
+        x[0][3] = 89;
+        x[1][0] = 28;
+        x[1][1] = 67;
+        x[1][2] = 56;
+        x[2][0] = 80;
+        x[2][1] = 90;
+        x[3][0] = 90;
+
+        for (int i = 0; i < 4; i++) {
+            for (int j = 0; j < 4; j++) {
+                System.out.println("x[" + i + "][" + j + "] = " + x[i][j]);
+            }
+            System.out.println();
+        }
+        System.out.println("The unassigned block of memory are assigned to zero.");
+    }
+}
+
+

Conventional Representation

+

This method of declaring array is often referred as conventional way of declaring array. +

class ConventionalWay{
+    public static void main(String[] args){
+        int[][] x = new int[4][3]; // The no of pairs of brackets represents the level of array i.e. dimensions.
+    }
+}
+

+ + +
+
+
+ +
+ + + +
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+
+
+ + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/array/matrixRepresentation/matrixRepresentation.java b/array/matrixRepresentation/matrixRepresentation.java similarity index 100% rename from notes/array/matrixRepresentation/matrixRepresentation.java rename to array/matrixRepresentation/matrixRepresentation.java diff --git a/notes/array/threeDimensionalArray.java b/array/threeDimensionalArray.java similarity index 100% rename from notes/array/threeDimensionalArray.java rename to array/threeDimensionalArray.java diff --git a/notes/array/twoDArray.java b/array/twoDArray.java similarity index 100% rename from notes/array/twoDArray.java rename to array/twoDArray.java diff --git a/notes/array/twoDimensionalArrayManualAllocation.java b/array/twoDimensionalArrayManualAllocation.java similarity index 100% rename from notes/array/twoDimensionalArrayManualAllocation.java rename to array/twoDimensionalArrayManualAllocation.java diff --git 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strict';\n\n /**\n * Applies the :focus-visible polyfill at the given scope.\n * A scope in this case is either the top-level Document or a Shadow Root.\n *\n * @param {(Document|ShadowRoot)} scope\n * @see https://github.com/WICG/focus-visible\n */\n function applyFocusVisiblePolyfill(scope) {\n var hadKeyboardEvent = true;\n var hadFocusVisibleRecently = false;\n var hadFocusVisibleRecentlyTimeout = null;\n\n var inputTypesAllowlist = {\n text: true,\n search: true,\n url: true,\n tel: true,\n email: true,\n password: true,\n number: true,\n date: true,\n month: true,\n week: true,\n time: true,\n datetime: true,\n 'datetime-local': true\n };\n\n /**\n * Helper function for legacy browsers and iframes which sometimes focus\n * elements like document, body, and non-interactive SVG.\n * @param {Element} el\n */\n function isValidFocusTarget(el) {\n if (\n el &&\n el !== document &&\n el.nodeName !== 'HTML' &&\n el.nodeName !== 'BODY' &&\n 'classList' in el &&\n 'contains' in el.classList\n ) {\n return true;\n }\n return false;\n }\n\n /**\n * Computes whether the given element should automatically trigger the\n * `focus-visible` class being added, i.e. whether it should always match\n * `:focus-visible` when focused.\n * @param {Element} el\n * @return {boolean}\n */\n function focusTriggersKeyboardModality(el) {\n var type = el.type;\n var tagName = el.tagName;\n\n if (tagName === 'INPUT' && inputTypesAllowlist[type] && !el.readOnly) {\n return true;\n }\n\n if (tagName === 'TEXTAREA' && !el.readOnly) {\n return true;\n }\n\n if (el.isContentEditable) {\n return true;\n }\n\n return false;\n }\n\n /**\n * Add the `focus-visible` class to the given element if it was not added by\n * the author.\n * @param {Element} el\n */\n function addFocusVisibleClass(el) {\n if (el.classList.contains('focus-visible')) {\n return;\n }\n el.classList.add('focus-visible');\n el.setAttribute('data-focus-visible-added', '');\n }\n\n /**\n * Remove the `focus-visible` class from the given element if it was not\n * originally added by the author.\n * @param {Element} el\n */\n function removeFocusVisibleClass(el) {\n if (!el.hasAttribute('data-focus-visible-added')) {\n return;\n }\n el.classList.remove('focus-visible');\n el.removeAttribute('data-focus-visible-added');\n }\n\n /**\n * If the most recent user interaction was via the keyboard;\n * and the key press did not include a meta, alt/option, or control key;\n * then the modality is keyboard. Otherwise, the modality is not keyboard.\n * Apply `focus-visible` to any current active element and keep track\n * of our keyboard modality state with `hadKeyboardEvent`.\n * @param {KeyboardEvent} e\n */\n function onKeyDown(e) {\n if (e.metaKey || e.altKey || e.ctrlKey) {\n return;\n }\n\n if (isValidFocusTarget(scope.activeElement)) {\n addFocusVisibleClass(scope.activeElement);\n }\n\n hadKeyboardEvent = true;\n }\n\n /**\n * If at any point a user clicks with a pointing device, ensure that we change\n * the modality away from keyboard.\n * This avoids the situation where a user presses a key on an already focused\n * element, and then clicks on a different element, focusing it with a\n * pointing device, while we still think we're in keyboard modality.\n * @param {Event} e\n */\n function onPointerDown(e) {\n hadKeyboardEvent = false;\n }\n\n /**\n * On `focus`, add the `focus-visible` class to the target if:\n * - the target received focus as a result of keyboard navigation, or\n * - the event target is an element that will likely require interaction\n * via the keyboard (e.g. a text box)\n * @param {Event} e\n */\n function onFocus(e) {\n // Prevent IE from focusing the document or HTML element.\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (hadKeyboardEvent || focusTriggersKeyboardModality(e.target)) {\n addFocusVisibleClass(e.target);\n }\n }\n\n /**\n * On `blur`, remove the `focus-visible` class from the target.\n * @param {Event} e\n */\n function onBlur(e) {\n if (!isValidFocusTarget(e.target)) {\n return;\n }\n\n if (\n e.target.classList.contains('focus-visible') ||\n e.target.hasAttribute('data-focus-visible-added')\n ) {\n // To detect a tab/window switch, we look for a blur event followed\n // rapidly by a visibility change.\n // If we don't see a visibility change within 100ms, it's probably a\n // regular focus change.\n hadFocusVisibleRecently = true;\n window.clearTimeout(hadFocusVisibleRecentlyTimeout);\n hadFocusVisibleRecentlyTimeout = window.setTimeout(function() {\n hadFocusVisibleRecently = false;\n }, 100);\n removeFocusVisibleClass(e.target);\n }\n }\n\n /**\n * If the user changes tabs, keep track of whether or not the previously\n * focused element had .focus-visible.\n * @param {Event} e\n */\n function onVisibilityChange(e) {\n if (document.visibilityState === 'hidden') {\n // If the tab becomes active again, the browser will handle calling focus\n // on the element (Safari actually calls it twice).\n // If this tab change caused a blur on an element with focus-visible,\n // re-apply the class when the user switches back to the tab.\n if (hadFocusVisibleRecently) {\n hadKeyboardEvent = true;\n }\n addInitialPointerMoveListeners();\n }\n }\n\n /**\n * Add a group of listeners to detect usage of any pointing devices.\n * These listeners will be added when the polyfill first loads, and anytime\n * the window is blurred, so that they are active when the window regains\n * focus.\n */\n function addInitialPointerMoveListeners() {\n document.addEventListener('mousemove', onInitialPointerMove);\n document.addEventListener('mousedown', onInitialPointerMove);\n document.addEventListener('mouseup', onInitialPointerMove);\n document.addEventListener('pointermove', onInitialPointerMove);\n document.addEventListener('pointerdown', onInitialPointerMove);\n document.addEventListener('pointerup', onInitialPointerMove);\n document.addEventListener('touchmove', onInitialPointerMove);\n document.addEventListener('touchstart', onInitialPointerMove);\n document.addEventListener('touchend', onInitialPointerMove);\n }\n\n function removeInitialPointerMoveListeners() {\n document.removeEventListener('mousemove', onInitialPointerMove);\n document.removeEventListener('mousedown', onInitialPointerMove);\n document.removeEventListener('mouseup', onInitialPointerMove);\n document.removeEventListener('pointermove', onInitialPointerMove);\n document.removeEventListener('pointerdown', onInitialPointerMove);\n document.removeEventListener('pointerup', onInitialPointerMove);\n document.removeEventListener('touchmove', onInitialPointerMove);\n document.removeEventListener('touchstart', onInitialPointerMove);\n document.removeEventListener('touchend', onInitialPointerMove);\n }\n\n /**\n * When the polfyill first loads, assume the user is in keyboard modality.\n * If any event is received from a pointing device (e.g. mouse, pointer,\n * touch), turn off keyboard modality.\n * This accounts for situations where focus enters the page from the URL bar.\n * @param {Event} e\n */\n function onInitialPointerMove(e) {\n // Work around a Safari quirk that fires a mousemove on whenever the\n // window blurs, even if you're tabbing out of the page. \u00AF\\_(\u30C4)_/\u00AF\n if (e.target.nodeName && e.target.nodeName.toLowerCase() === 'html') {\n return;\n }\n\n hadKeyboardEvent = false;\n removeInitialPointerMoveListeners();\n }\n\n // For some kinds of state, we are interested in changes at the global scope\n // only. For example, global pointer input, global key presses and global\n // visibility change should affect the state at every scope:\n document.addEventListener('keydown', onKeyDown, true);\n document.addEventListener('mousedown', onPointerDown, true);\n document.addEventListener('pointerdown', onPointerDown, true);\n document.addEventListener('touchstart', onPointerDown, true);\n document.addEventListener('visibilitychange', onVisibilityChange, true);\n\n addInitialPointerMoveListeners();\n\n // For focus and blur, we specifically care about state changes in the local\n // scope. This is because focus / blur events that originate from within a\n // shadow root are not re-dispatched from the host element if it was already\n // the active element in its own scope:\n scope.addEventListener('focus', onFocus, true);\n scope.addEventListener('blur', onBlur, true);\n\n // We detect that a node is a ShadowRoot by ensuring that it is a\n // DocumentFragment and also has a host property. This check covers native\n // implementation and polyfill implementation transparently. If we only cared\n // about the native implementation, we could just check if the scope was\n // an instance of a ShadowRoot.\n if (scope.nodeType === Node.DOCUMENT_FRAGMENT_NODE && scope.host) {\n // Since a ShadowRoot is a special kind of DocumentFragment, it does not\n // have a root element to add a class to. So, we add this attribute to the\n // host element instead:\n scope.host.setAttribute('data-js-focus-visible', '');\n } else if (scope.nodeType === Node.DOCUMENT_NODE) {\n document.documentElement.classList.add('js-focus-visible');\n document.documentElement.setAttribute('data-js-focus-visible', '');\n }\n }\n\n // It is important to wrap all references to global window and document in\n // these checks to support server-side rendering use cases\n // @see https://github.com/WICG/focus-visible/issues/199\n if (typeof window !== 'undefined' && typeof document !== 'undefined') {\n // Make the polyfill helper globally available. This can be used as a signal\n // to interested libraries that wish to coordinate with the polyfill for e.g.,\n // applying the polyfill to a shadow root:\n window.applyFocusVisiblePolyfill = applyFocusVisiblePolyfill;\n\n // Notify interested libraries of the polyfill's presence, in case the\n // polyfill was loaded lazily:\n var event;\n\n try {\n event = new CustomEvent('focus-visible-polyfill-ready');\n } catch (error) {\n // IE11 does not support using CustomEvent as a constructor directly:\n event = document.createEvent('CustomEvent');\n event.initCustomEvent('focus-visible-polyfill-ready', false, false, {});\n }\n\n window.dispatchEvent(event);\n }\n\n if (typeof document !== 'undefined') {\n // Apply the polyfill to the global document, so that no JavaScript\n // coordination is required to use the polyfill in the top-level document:\n applyFocusVisiblePolyfill(document);\n }\n\n})));\n", "(function(global) {\r\n /**\r\n * Polyfill URLSearchParams\r\n *\r\n * Inspired from : https://github.com/WebReflection/url-search-params/blob/master/src/url-search-params.js\r\n */\r\n\r\n var checkIfIteratorIsSupported = function() {\r\n try {\r\n return !!Symbol.iterator;\r\n } catch (error) {\r\n return false;\r\n }\r\n };\r\n\r\n\r\n var iteratorSupported = checkIfIteratorIsSupported();\r\n\r\n var createIterator = function(items) {\r\n var iterator = {\r\n next: function() {\r\n var value = items.shift();\r\n return { done: value === void 0, value: value };\r\n }\r\n };\r\n\r\n if (iteratorSupported) {\r\n iterator[Symbol.iterator] = function() {\r\n return iterator;\r\n };\r\n }\r\n\r\n return iterator;\r\n };\r\n\r\n /**\r\n * Search param name and values should be encoded according to https://url.spec.whatwg.org/#urlencoded-serializing\r\n * encodeURIComponent() produces the same result except encoding spaces as `%20` instead of `+`.\r\n */\r\n var serializeParam = function(value) {\r\n return encodeURIComponent(value).replace(/%20/g, '+');\r\n };\r\n\r\n var deserializeParam = function(value) {\r\n return decodeURIComponent(String(value).replace(/\\+/g, ' '));\r\n };\r\n\r\n var polyfillURLSearchParams = function() {\r\n\r\n var URLSearchParams = function(searchString) {\r\n Object.defineProperty(this, '_entries', { writable: true, value: {} });\r\n var typeofSearchString = typeof searchString;\r\n\r\n if (typeofSearchString === 'undefined') {\r\n // do nothing\r\n } else if (typeofSearchString === 'string') {\r\n if (searchString !== '') {\r\n this._fromString(searchString);\r\n }\r\n } else if (searchString instanceof URLSearchParams) {\r\n var _this = this;\r\n searchString.forEach(function(value, name) {\r\n _this.append(name, value);\r\n });\r\n } else if ((searchString !== null) && (typeofSearchString === 'object')) {\r\n if (Object.prototype.toString.call(searchString) === '[object Array]') {\r\n for (var i = 0; i < searchString.length; i++) {\r\n var entry = searchString[i];\r\n if ((Object.prototype.toString.call(entry) === '[object Array]') || (entry.length !== 2)) {\r\n this.append(entry[0], entry[1]);\r\n } else {\r\n throw new TypeError('Expected [string, any] as entry at index ' + i + ' of URLSearchParams\\'s input');\r\n }\r\n }\r\n } else {\r\n for (var key in searchString) {\r\n if (searchString.hasOwnProperty(key)) {\r\n this.append(key, searchString[key]);\r\n }\r\n }\r\n }\r\n } else {\r\n throw new TypeError('Unsupported input\\'s type for URLSearchParams');\r\n }\r\n };\r\n\r\n var proto = URLSearchParams.prototype;\r\n\r\n proto.append = function(name, value) {\r\n if (name in this._entries) {\r\n this._entries[name].push(String(value));\r\n } else {\r\n this._entries[name] = [String(value)];\r\n }\r\n };\r\n\r\n proto.delete = function(name) {\r\n delete this._entries[name];\r\n };\r\n\r\n proto.get = function(name) {\r\n return (name in this._entries) ? this._entries[name][0] : null;\r\n };\r\n\r\n proto.getAll = function(name) {\r\n return (name in this._entries) ? this._entries[name].slice(0) : [];\r\n };\r\n\r\n proto.has = function(name) {\r\n return (name in this._entries);\r\n };\r\n\r\n proto.set = function(name, value) {\r\n this._entries[name] = [String(value)];\r\n };\r\n\r\n proto.forEach = function(callback, thisArg) {\r\n var entries;\r\n for (var name in this._entries) {\r\n if (this._entries.hasOwnProperty(name)) {\r\n entries = this._entries[name];\r\n for (var i = 0; i < entries.length; i++) {\r\n callback.call(thisArg, entries[i], name, this);\r\n }\r\n }\r\n }\r\n };\r\n\r\n proto.keys = function() {\r\n var items = [];\r\n this.forEach(function(value, name) {\r\n items.push(name);\r\n });\r\n return createIterator(items);\r\n };\r\n\r\n proto.values = function() {\r\n var items = [];\r\n this.forEach(function(value) {\r\n items.push(value);\r\n });\r\n return createIterator(items);\r\n };\r\n\r\n proto.entries = function() {\r\n var items = [];\r\n this.forEach(function(value, name) {\r\n items.push([name, value]);\r\n });\r\n return createIterator(items);\r\n };\r\n\r\n if (iteratorSupported) {\r\n proto[Symbol.iterator] = proto.entries;\r\n }\r\n\r\n proto.toString = function() {\r\n var searchArray = [];\r\n this.forEach(function(value, name) {\r\n searchArray.push(serializeParam(name) + '=' + serializeParam(value));\r\n });\r\n return searchArray.join('&');\r\n };\r\n\r\n\r\n global.URLSearchParams = URLSearchParams;\r\n };\r\n\r\n var checkIfURLSearchParamsSupported = function() {\r\n try {\r\n var URLSearchParams = global.URLSearchParams;\r\n\r\n return (\r\n (new URLSearchParams('?a=1').toString() === 'a=1') &&\r\n (typeof URLSearchParams.prototype.set === 'function') &&\r\n (typeof URLSearchParams.prototype.entries === 'function')\r\n );\r\n } catch (e) {\r\n return false;\r\n }\r\n };\r\n\r\n if (!checkIfURLSearchParamsSupported()) {\r\n polyfillURLSearchParams();\r\n }\r\n\r\n var proto = global.URLSearchParams.prototype;\r\n\r\n if (typeof proto.sort !== 'function') {\r\n proto.sort = function() {\r\n var _this = this;\r\n var items = [];\r\n this.forEach(function(value, name) {\r\n items.push([name, value]);\r\n if (!_this._entries) {\r\n _this.delete(name);\r\n }\r\n });\r\n items.sort(function(a, b) {\r\n if (a[0] < b[0]) {\r\n return -1;\r\n } else if (a[0] > b[0]) {\r\n return +1;\r\n } else {\r\n return 0;\r\n }\r\n });\r\n if (_this._entries) { // force reset because IE keeps keys index\r\n _this._entries = {};\r\n }\r\n for (var i = 0; i < items.length; i++) {\r\n this.append(items[i][0], items[i][1]);\r\n }\r\n };\r\n }\r\n\r\n if (typeof proto._fromString !== 'function') {\r\n Object.defineProperty(proto, '_fromString', {\r\n enumerable: false,\r\n configurable: false,\r\n writable: false,\r\n value: function(searchString) {\r\n if (this._entries) {\r\n this._entries = {};\r\n } else {\r\n var keys = [];\r\n this.forEach(function(value, name) {\r\n keys.push(name);\r\n });\r\n for (var i = 0; i < keys.length; i++) {\r\n this.delete(keys[i]);\r\n }\r\n }\r\n\r\n searchString = searchString.replace(/^\\?/, '');\r\n var attributes = searchString.split('&');\r\n var attribute;\r\n for (var i = 0; i < attributes.length; i++) {\r\n attribute = attributes[i].split('=');\r\n this.append(\r\n deserializeParam(attribute[0]),\r\n (attribute.length > 1) ? deserializeParam(attribute[1]) : ''\r\n );\r\n }\r\n }\r\n });\r\n }\r\n\r\n // HTMLAnchorElement\r\n\r\n})(\r\n (typeof global !== 'undefined') ? global\r\n : ((typeof window !== 'undefined') ? window\r\n : ((typeof self !== 'undefined') ? self : this))\r\n);\r\n\r\n(function(global) {\r\n /**\r\n * Polyfill URL\r\n *\r\n * Inspired from : https://github.com/arv/DOM-URL-Polyfill/blob/master/src/url.js\r\n */\r\n\r\n var checkIfURLIsSupported = function() {\r\n try {\r\n var u = new global.URL('b', 'http://a');\r\n u.pathname = 'c d';\r\n return (u.href === 'http://a/c%20d') && u.searchParams;\r\n } catch (e) {\r\n return false;\r\n }\r\n };\r\n\r\n\r\n var polyfillURL = function() {\r\n var _URL = global.URL;\r\n\r\n var URL = function(url, base) {\r\n if (typeof url !== 'string') url = String(url);\r\n if (base && typeof base !== 'string') base = String(base);\r\n\r\n // Only create another document if the base is different from current location.\r\n var doc = document, baseElement;\r\n if (base && (global.location === void 0 || base !== global.location.href)) {\r\n base = base.toLowerCase();\r\n doc = document.implementation.createHTMLDocument('');\r\n baseElement = doc.createElement('base');\r\n baseElement.href = base;\r\n doc.head.appendChild(baseElement);\r\n try {\r\n if (baseElement.href.indexOf(base) !== 0) throw new Error(baseElement.href);\r\n } catch (err) {\r\n throw new Error('URL unable to set base ' + base + ' due to ' + err);\r\n }\r\n }\r\n\r\n var anchorElement = doc.createElement('a');\r\n anchorElement.href = url;\r\n if (baseElement) {\r\n doc.body.appendChild(anchorElement);\r\n anchorElement.href = anchorElement.href; // force href to refresh\r\n }\r\n\r\n var inputElement = doc.createElement('input');\r\n inputElement.type = 'url';\r\n inputElement.value = url;\r\n\r\n if (anchorElement.protocol === ':' || !/:/.test(anchorElement.href) || (!inputElement.checkValidity() && !base)) {\r\n throw new TypeError('Invalid URL');\r\n }\r\n\r\n Object.defineProperty(this, '_anchorElement', {\r\n value: anchorElement\r\n });\r\n\r\n\r\n // create a linked searchParams which reflect its changes on URL\r\n var searchParams = new global.URLSearchParams(this.search);\r\n var enableSearchUpdate = true;\r\n var enableSearchParamsUpdate = true;\r\n var _this = this;\r\n ['append', 'delete', 'set'].forEach(function(methodName) {\r\n var method = searchParams[methodName];\r\n searchParams[methodName] = function() {\r\n method.apply(searchParams, arguments);\r\n if (enableSearchUpdate) {\r\n enableSearchParamsUpdate = false;\r\n _this.search = searchParams.toString();\r\n enableSearchParamsUpdate = true;\r\n }\r\n };\r\n });\r\n\r\n Object.defineProperty(this, 'searchParams', {\r\n value: searchParams,\r\n enumerable: true\r\n });\r\n\r\n var search = void 0;\r\n Object.defineProperty(this, '_updateSearchParams', {\r\n enumerable: false,\r\n configurable: false,\r\n writable: false,\r\n value: function() {\r\n if (this.search !== search) {\r\n search = this.search;\r\n if (enableSearchParamsUpdate) {\r\n enableSearchUpdate = false;\r\n this.searchParams._fromString(this.search);\r\n enableSearchUpdate = true;\r\n }\r\n }\r\n }\r\n });\r\n };\r\n\r\n var proto = URL.prototype;\r\n\r\n var linkURLWithAnchorAttribute = function(attributeName) {\r\n Object.defineProperty(proto, attributeName, {\r\n get: function() {\r\n return this._anchorElement[attributeName];\r\n },\r\n set: function(value) {\r\n this._anchorElement[attributeName] = value;\r\n },\r\n enumerable: true\r\n });\r\n };\r\n\r\n ['hash', 'host', 'hostname', 'port', 'protocol']\r\n .forEach(function(attributeName) {\r\n linkURLWithAnchorAttribute(attributeName);\r\n });\r\n\r\n Object.defineProperty(proto, 'search', {\r\n get: function() {\r\n return this._anchorElement['search'];\r\n },\r\n set: function(value) {\r\n this._anchorElement['search'] = value;\r\n this._updateSearchParams();\r\n },\r\n enumerable: true\r\n });\r\n\r\n Object.defineProperties(proto, {\r\n\r\n 'toString': {\r\n get: function() {\r\n var _this = this;\r\n return function() {\r\n return _this.href;\r\n };\r\n }\r\n },\r\n\r\n 'href': {\r\n get: function() {\r\n return this._anchorElement.href.replace(/\\?$/, '');\r\n },\r\n set: function(value) {\r\n this._anchorElement.href = value;\r\n this._updateSearchParams();\r\n },\r\n enumerable: true\r\n },\r\n\r\n 'pathname': {\r\n get: function() {\r\n return this._anchorElement.pathname.replace(/(^\\/?)/, '/');\r\n },\r\n set: function(value) {\r\n this._anchorElement.pathname = value;\r\n },\r\n enumerable: true\r\n },\r\n\r\n 'origin': {\r\n get: function() {\r\n // get expected port from protocol\r\n var expectedPort = { 'http:': 80, 'https:': 443, 'ftp:': 21 }[this._anchorElement.protocol];\r\n // add port to origin if, expected port is different than actual port\r\n // and it is not empty f.e http://foo:8080\r\n // 8080 != 80 && 8080 != ''\r\n var addPortToOrigin = this._anchorElement.port != expectedPort &&\r\n this._anchorElement.port !== '';\r\n\r\n return this._anchorElement.protocol +\r\n '//' +\r\n this._anchorElement.hostname +\r\n (addPortToOrigin ? (':' + this._anchorElement.port) : '');\r\n },\r\n enumerable: true\r\n },\r\n\r\n 'password': { // TODO\r\n get: function() {\r\n return '';\r\n },\r\n set: function(value) {\r\n },\r\n enumerable: true\r\n },\r\n\r\n 'username': { // TODO\r\n get: function() {\r\n return '';\r\n },\r\n set: function(value) {\r\n },\r\n enumerable: true\r\n },\r\n });\r\n\r\n URL.createObjectURL = function(blob) {\r\n return _URL.createObjectURL.apply(_URL, arguments);\r\n };\r\n\r\n URL.revokeObjectURL = function(url) {\r\n return _URL.revokeObjectURL.apply(_URL, arguments);\r\n };\r\n\r\n global.URL = URL;\r\n\r\n };\r\n\r\n if (!checkIfURLIsSupported()) {\r\n polyfillURL();\r\n }\r\n\r\n if ((global.location !== void 0) && !('origin' in global.location)) {\r\n var getOrigin = function() {\r\n return global.location.protocol + '//' + global.location.hostname + (global.location.port ? 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IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT,\r\nINDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM\r\nLOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR\r\nOTHER TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR\r\nPERFORMANCE OF THIS SOFTWARE.\r\n***************************************************************************** */\r\n/* global global, define, System, Reflect, Promise */\r\nvar __extends;\r\nvar __assign;\r\nvar __rest;\r\nvar __decorate;\r\nvar __param;\r\nvar __metadata;\r\nvar __awaiter;\r\nvar __generator;\r\nvar __exportStar;\r\nvar __values;\r\nvar __read;\r\nvar __spread;\r\nvar __spreadArrays;\r\nvar __spreadArray;\r\nvar __await;\r\nvar __asyncGenerator;\r\nvar __asyncDelegator;\r\nvar __asyncValues;\r\nvar __makeTemplateObject;\r\nvar __importStar;\r\nvar __importDefault;\r\nvar __classPrivateFieldGet;\r\nvar __classPrivateFieldSet;\r\nvar __createBinding;\r\n(function (factory) {\r\n var root = typeof global === \"object\" ? global : typeof self === \"object\" ? self : typeof this === \"object\" ? this : {};\r\n if (typeof define === \"function\" && define.amd) {\r\n define(\"tslib\", [\"exports\"], function (exports) { factory(createExporter(root, createExporter(exports))); });\r\n }\r\n else if (typeof module === \"object\" && typeof module.exports === \"object\") {\r\n factory(createExporter(root, createExporter(module.exports)));\r\n }\r\n else {\r\n factory(createExporter(root));\r\n }\r\n function createExporter(exports, previous) {\r\n if (exports !== root) {\r\n if (typeof Object.create === \"function\") {\r\n Object.defineProperty(exports, \"__esModule\", { value: true });\r\n }\r\n else {\r\n exports.__esModule = true;\r\n }\r\n }\r\n return function (id, v) { return exports[id] = previous ? previous(id, v) : v; };\r\n }\r\n})\r\n(function (exporter) {\r\n var extendStatics = Object.setPrototypeOf ||\r\n ({ __proto__: [] } instanceof Array && function (d, b) { d.__proto__ = b; }) ||\r\n function (d, b) { for (var p in b) if (Object.prototype.hasOwnProperty.call(b, p)) d[p] = b[p]; };\r\n\r\n __extends = function (d, b) {\r\n if (typeof b !== \"function\" && b !== null)\r\n throw new TypeError(\"Class extends value \" + String(b) + \" is not a constructor or null\");\r\n extendStatics(d, b);\r\n function __() { this.constructor = d; }\r\n d.prototype = b === null ? 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'right' : 'left'] = '-9999px'; // Move element to the same position vertically\n\n var yPosition = window.pageYOffset || document.documentElement.scrollTop;\n fakeElement.style.top = \"\".concat(yPosition, \"px\");\n fakeElement.setAttribute('readonly', '');\n fakeElement.value = value;\n return fakeElement;\n}\n;// CONCATENATED MODULE: ./src/actions/copy.js\n\n\n\n/**\n * Copy action wrapper.\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @return {String}\n */\n\nvar ClipboardActionCopy = function ClipboardActionCopy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n var selectedText = '';\n\n if (typeof target === 'string') {\n var fakeElement = createFakeElement(target);\n options.container.appendChild(fakeElement);\n selectedText = select_default()(fakeElement);\n command('copy');\n fakeElement.remove();\n } else {\n selectedText = select_default()(target);\n command('copy');\n }\n\n return selectedText;\n};\n\n/* harmony default export */ var actions_copy = (ClipboardActionCopy);\n;// CONCATENATED MODULE: ./src/actions/default.js\nfunction _typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { _typeof = function _typeof(obj) { return typeof obj; }; } else { _typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return _typeof(obj); }\n\n\n\n/**\n * Inner function which performs selection from either `text` or `target`\n * properties and then executes copy or cut operations.\n * @param {Object} options\n */\n\nvar ClipboardActionDefault = function ClipboardActionDefault() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n // Defines base properties passed from constructor.\n var _options$action = options.action,\n action = _options$action === void 0 ? 'copy' : _options$action,\n container = options.container,\n target = options.target,\n text = options.text; // Sets the `action` to be performed which can be either 'copy' or 'cut'.\n\n if (action !== 'copy' && action !== 'cut') {\n throw new Error('Invalid \"action\" value, use either \"copy\" or \"cut\"');\n } // Sets the `target` property using an element that will be have its content copied.\n\n\n if (target !== undefined) {\n if (target && _typeof(target) === 'object' && target.nodeType === 1) {\n if (action === 'copy' && target.hasAttribute('disabled')) {\n throw new Error('Invalid \"target\" attribute. Please use \"readonly\" instead of \"disabled\" attribute');\n }\n\n if (action === 'cut' && (target.hasAttribute('readonly') || target.hasAttribute('disabled'))) {\n throw new Error('Invalid \"target\" attribute. You can\\'t cut text from elements with \"readonly\" or \"disabled\" attributes');\n }\n } else {\n throw new Error('Invalid \"target\" value, use a valid Element');\n }\n } // Define selection strategy based on `text` property.\n\n\n if (text) {\n return actions_copy(text, {\n container: container\n });\n } // Defines which selection strategy based on `target` property.\n\n\n if (target) {\n return action === 'cut' ? actions_cut(target) : actions_copy(target, {\n container: container\n });\n }\n};\n\n/* harmony default export */ var actions_default = (ClipboardActionDefault);\n;// CONCATENATED MODULE: ./src/clipboard.js\nfunction clipboard_typeof(obj) { \"@babel/helpers - typeof\"; if (typeof Symbol === \"function\" && typeof Symbol.iterator === \"symbol\") { clipboard_typeof = function _typeof(obj) { return typeof obj; }; } else { clipboard_typeof = function _typeof(obj) { return obj && typeof Symbol === \"function\" && obj.constructor === Symbol && obj !== Symbol.prototype ? \"symbol\" : typeof obj; }; } return clipboard_typeof(obj); }\n\nfunction _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError(\"Cannot call a class as a function\"); } }\n\nfunction _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if (\"value\" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } }\n\nfunction _createClass(Constructor, protoProps, staticProps) { if (protoProps) _defineProperties(Constructor.prototype, protoProps); if (staticProps) _defineProperties(Constructor, staticProps); return Constructor; }\n\nfunction _inherits(subClass, superClass) { if (typeof superClass !== \"function\" && superClass !== null) { throw new TypeError(\"Super expression must either be null or a function\"); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, writable: true, configurable: true } }); if (superClass) _setPrototypeOf(subClass, superClass); }\n\nfunction _setPrototypeOf(o, p) { _setPrototypeOf = Object.setPrototypeOf || function _setPrototypeOf(o, p) { o.__proto__ = p; return o; }; return _setPrototypeOf(o, p); }\n\nfunction _createSuper(Derived) { var hasNativeReflectConstruct = _isNativeReflectConstruct(); return function _createSuperInternal() { var Super = _getPrototypeOf(Derived), result; if (hasNativeReflectConstruct) { var NewTarget = _getPrototypeOf(this).constructor; result = Reflect.construct(Super, arguments, NewTarget); } else { result = Super.apply(this, arguments); } return _possibleConstructorReturn(this, result); }; }\n\nfunction _possibleConstructorReturn(self, call) { if (call && (clipboard_typeof(call) === \"object\" || typeof call === \"function\")) { return call; } return _assertThisInitialized(self); }\n\nfunction _assertThisInitialized(self) { if (self === void 0) { throw new ReferenceError(\"this hasn't been initialised - super() hasn't been called\"); } return self; }\n\nfunction _isNativeReflectConstruct() { if (typeof Reflect === \"undefined\" || !Reflect.construct) return false; if (Reflect.construct.sham) return false; if (typeof Proxy === \"function\") return true; try { Date.prototype.toString.call(Reflect.construct(Date, [], function () {})); return true; } catch (e) { return false; } }\n\nfunction _getPrototypeOf(o) { _getPrototypeOf = Object.setPrototypeOf ? Object.getPrototypeOf : function _getPrototypeOf(o) { return o.__proto__ || Object.getPrototypeOf(o); }; return _getPrototypeOf(o); }\n\n\n\n\n\n\n/**\n * Helper function to retrieve attribute value.\n * @param {String} suffix\n * @param {Element} element\n */\n\nfunction getAttributeValue(suffix, element) {\n var attribute = \"data-clipboard-\".concat(suffix);\n\n if (!element.hasAttribute(attribute)) {\n return;\n }\n\n return element.getAttribute(attribute);\n}\n/**\n * Base class which takes one or more elements, adds event listeners to them,\n * and instantiates a new `ClipboardAction` on each click.\n */\n\n\nvar Clipboard = /*#__PURE__*/function (_Emitter) {\n _inherits(Clipboard, _Emitter);\n\n var _super = _createSuper(Clipboard);\n\n /**\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n * @param {Object} options\n */\n function Clipboard(trigger, options) {\n var _this;\n\n _classCallCheck(this, Clipboard);\n\n _this = _super.call(this);\n\n _this.resolveOptions(options);\n\n _this.listenClick(trigger);\n\n return _this;\n }\n /**\n * Defines if attributes would be resolved using internal setter functions\n * or custom functions that were passed in the constructor.\n * @param {Object} options\n */\n\n\n _createClass(Clipboard, [{\n key: \"resolveOptions\",\n value: function resolveOptions() {\n var options = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : {};\n this.action = typeof options.action === 'function' ? options.action : this.defaultAction;\n this.target = typeof options.target === 'function' ? options.target : this.defaultTarget;\n this.text = typeof options.text === 'function' ? options.text : this.defaultText;\n this.container = clipboard_typeof(options.container) === 'object' ? options.container : document.body;\n }\n /**\n * Adds a click event listener to the passed trigger.\n * @param {String|HTMLElement|HTMLCollection|NodeList} trigger\n */\n\n }, {\n key: \"listenClick\",\n value: function listenClick(trigger) {\n var _this2 = this;\n\n this.listener = listen_default()(trigger, 'click', function (e) {\n return _this2.onClick(e);\n });\n }\n /**\n * Defines a new `ClipboardAction` on each click event.\n * @param {Event} e\n */\n\n }, {\n key: \"onClick\",\n value: function onClick(e) {\n var trigger = e.delegateTarget || e.currentTarget;\n var action = this.action(trigger) || 'copy';\n var text = actions_default({\n action: action,\n container: this.container,\n target: this.target(trigger),\n text: this.text(trigger)\n }); // Fires an event based on the copy operation result.\n\n this.emit(text ? 'success' : 'error', {\n action: action,\n text: text,\n trigger: trigger,\n clearSelection: function clearSelection() {\n if (trigger) {\n trigger.focus();\n }\n\n document.activeElement.blur();\n window.getSelection().removeAllRanges();\n }\n });\n }\n /**\n * Default `action` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultAction\",\n value: function defaultAction(trigger) {\n return getAttributeValue('action', trigger);\n }\n /**\n * Default `target` lookup function.\n * @param {Element} trigger\n */\n\n }, {\n key: \"defaultTarget\",\n value: function defaultTarget(trigger) {\n var selector = getAttributeValue('target', trigger);\n\n if (selector) {\n return document.querySelector(selector);\n }\n }\n /**\n * Allow fire programmatically a copy action\n * @param {String|HTMLElement} target\n * @param {Object} options\n * @returns Text copied.\n */\n\n }, {\n key: \"defaultText\",\n\n /**\n * Default `text` lookup function.\n * @param {Element} trigger\n */\n value: function defaultText(trigger) {\n return getAttributeValue('text', trigger);\n }\n /**\n * Destroy lifecycle.\n */\n\n }, {\n key: \"destroy\",\n value: function destroy() {\n this.listener.destroy();\n }\n }], [{\n key: \"copy\",\n value: function copy(target) {\n var options = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : {\n container: document.body\n };\n return actions_copy(target, options);\n }\n /**\n * Allow fire programmatically a cut action\n * @param {String|HTMLElement} target\n * @returns Text cutted.\n */\n\n }, {\n key: \"cut\",\n value: function cut(target) {\n return actions_cut(target);\n }\n /**\n * Returns the support of the given action, or all actions if no action is\n * given.\n * @param {String} [action]\n */\n\n }, {\n key: \"isSupported\",\n value: function isSupported() {\n var action = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : ['copy', 'cut'];\n var actions = typeof action === 'string' ? [action] : action;\n var support = !!document.queryCommandSupported;\n actions.forEach(function (action) {\n support = support && !!document.queryCommandSupported(action);\n });\n return support;\n }\n }]);\n\n return Clipboard;\n}((tiny_emitter_default()));\n\n/* harmony default export */ var clipboard = (Clipboard);\n\n/***/ }),\n\n/***/ 828:\n/***/ (function(module) {\n\nvar DOCUMENT_NODE_TYPE = 9;\n\n/**\n * A polyfill for Element.matches()\n */\nif (typeof Element !== 'undefined' && !Element.prototype.matches) {\n var proto = Element.prototype;\n\n proto.matches = proto.matchesSelector ||\n proto.mozMatchesSelector ||\n proto.msMatchesSelector ||\n proto.oMatchesSelector ||\n proto.webkitMatchesSelector;\n}\n\n/**\n * Finds the closest parent that matches a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @return {Function}\n */\nfunction closest (element, selector) {\n while (element && element.nodeType !== DOCUMENT_NODE_TYPE) {\n if (typeof element.matches === 'function' &&\n element.matches(selector)) {\n return element;\n }\n element = element.parentNode;\n }\n}\n\nmodule.exports = closest;\n\n\n/***/ }),\n\n/***/ 438:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar closest = __webpack_require__(828);\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction _delegate(element, selector, type, callback, useCapture) {\n var listenerFn = listener.apply(this, arguments);\n\n element.addEventListener(type, listenerFn, useCapture);\n\n return {\n destroy: function() {\n element.removeEventListener(type, listenerFn, useCapture);\n }\n }\n}\n\n/**\n * Delegates event to a selector.\n *\n * @param {Element|String|Array} [elements]\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @param {Boolean} useCapture\n * @return {Object}\n */\nfunction delegate(elements, selector, type, callback, useCapture) {\n // Handle the regular Element usage\n if (typeof elements.addEventListener === 'function') {\n return _delegate.apply(null, arguments);\n }\n\n // Handle Element-less usage, it defaults to global delegation\n if (typeof type === 'function') {\n // Use `document` as the first parameter, then apply arguments\n // This is a short way to .unshift `arguments` without running into deoptimizations\n return _delegate.bind(null, document).apply(null, arguments);\n }\n\n // Handle Selector-based usage\n if (typeof elements === 'string') {\n elements = document.querySelectorAll(elements);\n }\n\n // Handle Array-like based usage\n return Array.prototype.map.call(elements, function (element) {\n return _delegate(element, selector, type, callback, useCapture);\n });\n}\n\n/**\n * Finds closest match and invokes callback.\n *\n * @param {Element} element\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Function}\n */\nfunction listener(element, selector, type, callback) {\n return function(e) {\n e.delegateTarget = closest(e.target, selector);\n\n if (e.delegateTarget) {\n callback.call(element, e);\n }\n }\n}\n\nmodule.exports = delegate;\n\n\n/***/ }),\n\n/***/ 879:\n/***/ (function(__unused_webpack_module, exports) {\n\n/**\n * Check if argument is a HTML element.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.node = function(value) {\n return value !== undefined\n && value instanceof HTMLElement\n && value.nodeType === 1;\n};\n\n/**\n * Check if argument is a list of HTML elements.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.nodeList = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return value !== undefined\n && (type === '[object NodeList]' || type === '[object HTMLCollection]')\n && ('length' in value)\n && (value.length === 0 || exports.node(value[0]));\n};\n\n/**\n * Check if argument is a string.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.string = function(value) {\n return typeof value === 'string'\n || value instanceof String;\n};\n\n/**\n * Check if argument is a function.\n *\n * @param {Object} value\n * @return {Boolean}\n */\nexports.fn = function(value) {\n var type = Object.prototype.toString.call(value);\n\n return type === '[object Function]';\n};\n\n\n/***/ }),\n\n/***/ 370:\n/***/ (function(module, __unused_webpack_exports, __webpack_require__) {\n\nvar is = __webpack_require__(879);\nvar delegate = __webpack_require__(438);\n\n/**\n * Validates all params and calls the right\n * listener function based on its target type.\n *\n * @param {String|HTMLElement|HTMLCollection|NodeList} target\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listen(target, type, callback) {\n if (!target && !type && !callback) {\n throw new Error('Missing required arguments');\n }\n\n if (!is.string(type)) {\n throw new TypeError('Second argument must be a String');\n }\n\n if (!is.fn(callback)) {\n throw new TypeError('Third argument must be a Function');\n }\n\n if (is.node(target)) {\n return listenNode(target, type, callback);\n }\n else if (is.nodeList(target)) {\n return listenNodeList(target, type, callback);\n }\n else if (is.string(target)) {\n return listenSelector(target, type, callback);\n }\n else {\n throw new TypeError('First argument must be a String, HTMLElement, HTMLCollection, or NodeList');\n }\n}\n\n/**\n * Adds an event listener to a HTML element\n * and returns a remove listener function.\n *\n * @param {HTMLElement} node\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNode(node, type, callback) {\n node.addEventListener(type, callback);\n\n return {\n destroy: function() {\n node.removeEventListener(type, callback);\n }\n }\n}\n\n/**\n * Add an event listener to a list of HTML elements\n * and returns a remove listener function.\n *\n * @param {NodeList|HTMLCollection} nodeList\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenNodeList(nodeList, type, callback) {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.addEventListener(type, callback);\n });\n\n return {\n destroy: function() {\n Array.prototype.forEach.call(nodeList, function(node) {\n node.removeEventListener(type, callback);\n });\n }\n }\n}\n\n/**\n * Add an event listener to a selector\n * and returns a remove listener function.\n *\n * @param {String} selector\n * @param {String} type\n * @param {Function} callback\n * @return {Object}\n */\nfunction listenSelector(selector, type, callback) {\n return delegate(document.body, selector, type, callback);\n}\n\nmodule.exports = listen;\n\n\n/***/ }),\n\n/***/ 817:\n/***/ (function(module) {\n\nfunction select(element) {\n var selectedText;\n\n if (element.nodeName === 'SELECT') {\n element.focus();\n\n selectedText = element.value;\n }\n else if (element.nodeName === 'INPUT' || element.nodeName === 'TEXTAREA') {\n var isReadOnly = element.hasAttribute('readonly');\n\n if (!isReadOnly) {\n element.setAttribute('readonly', '');\n }\n\n element.select();\n element.setSelectionRange(0, element.value.length);\n\n if (!isReadOnly) {\n element.removeAttribute('readonly');\n }\n\n selectedText = element.value;\n }\n else {\n if (element.hasAttribute('contenteditable')) {\n element.focus();\n }\n\n var selection = window.getSelection();\n var range = document.createRange();\n\n range.selectNodeContents(element);\n selection.removeAllRanges();\n selection.addRange(range);\n\n selectedText = selection.toString();\n }\n\n return selectedText;\n}\n\nmodule.exports = select;\n\n\n/***/ }),\n\n/***/ 279:\n/***/ (function(module) {\n\nfunction E () {\n // Keep this empty so it's easier to inherit from\n // (via https://github.com/lipsmack from https://github.com/scottcorgan/tiny-emitter/issues/3)\n}\n\nE.prototype = {\n on: function (name, callback, ctx) {\n var e = this.e || (this.e = {});\n\n (e[name] || (e[name] = [])).push({\n fn: callback,\n ctx: ctx\n });\n\n return this;\n },\n\n once: function (name, callback, ctx) {\n var self = this;\n function listener () {\n self.off(name, listener);\n callback.apply(ctx, arguments);\n };\n\n listener._ = callback\n return this.on(name, listener, ctx);\n },\n\n emit: function (name) {\n var data = [].slice.call(arguments, 1);\n var evtArr = ((this.e || (this.e = {}))[name] || []).slice();\n var i = 0;\n var len = evtArr.length;\n\n for (i; i < len; i++) {\n evtArr[i].fn.apply(evtArr[i].ctx, data);\n }\n\n return this;\n },\n\n off: function (name, callback) {\n var e = this.e || (this.e = {});\n var evts = e[name];\n var liveEvents = [];\n\n if (evts && callback) {\n for (var i = 0, len = evts.length; i < len; i++) {\n if (evts[i].fn !== callback && evts[i].fn._ !== callback)\n liveEvents.push(evts[i]);\n }\n }\n\n // Remove event from queue to prevent memory leak\n // Suggested by https://github.com/lazd\n // Ref: https://github.com/scottcorgan/tiny-emitter/commit/c6ebfaa9bc973b33d110a84a307742b7cf94c953#commitcomment-5024910\n\n (liveEvents.length)\n ? e[name] = liveEvents\n : delete e[name];\n\n return this;\n }\n};\n\nmodule.exports = E;\nmodule.exports.TinyEmitter = E;\n\n\n/***/ })\n\n/******/ \t});\n/************************************************************************/\n/******/ \t// The module cache\n/******/ \tvar __webpack_module_cache__ = {};\n/******/ \t\n/******/ \t// The require function\n/******/ \tfunction __webpack_require__(moduleId) {\n/******/ \t\t// Check if module is in cache\n/******/ \t\tif(__webpack_module_cache__[moduleId]) {\n/******/ \t\t\treturn __webpack_module_cache__[moduleId].exports;\n/******/ \t\t}\n/******/ \t\t// Create a new module (and put it into the cache)\n/******/ \t\tvar module = __webpack_module_cache__[moduleId] = {\n/******/ \t\t\t// no module.id needed\n/******/ \t\t\t// no module.loaded needed\n/******/ \t\t\texports: {}\n/******/ \t\t};\n/******/ \t\n/******/ \t\t// Execute the module function\n/******/ \t\t__webpack_modules__[moduleId](module, module.exports, __webpack_require__);\n/******/ \t\n/******/ \t\t// Return the exports of the module\n/******/ \t\treturn module.exports;\n/******/ \t}\n/******/ \t\n/************************************************************************/\n/******/ \t/* webpack/runtime/compat get default export */\n/******/ \t!function() {\n/******/ \t\t// getDefaultExport function for compatibility with non-harmony modules\n/******/ \t\t__webpack_require__.n = function(module) {\n/******/ \t\t\tvar getter = module && module.__esModule ?\n/******/ \t\t\t\tfunction() { return module['default']; } :\n/******/ \t\t\t\tfunction() { return module; };\n/******/ \t\t\t__webpack_require__.d(getter, { a: getter });\n/******/ \t\t\treturn getter;\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/define property getters */\n/******/ \t!function() {\n/******/ \t\t// define getter functions for harmony exports\n/******/ \t\t__webpack_require__.d = function(exports, definition) {\n/******/ \t\t\tfor(var key in definition) {\n/******/ \t\t\t\tif(__webpack_require__.o(definition, key) && !__webpack_require__.o(exports, key)) {\n/******/ \t\t\t\t\tObject.defineProperty(exports, key, { enumerable: true, get: definition[key] });\n/******/ \t\t\t\t}\n/******/ \t\t\t}\n/******/ \t\t};\n/******/ \t}();\n/******/ \t\n/******/ \t/* webpack/runtime/hasOwnProperty shorthand */\n/******/ \t!function() {\n/******/ \t\t__webpack_require__.o = function(obj, prop) { return Object.prototype.hasOwnProperty.call(obj, prop); }\n/******/ \t}();\n/******/ \t\n/************************************************************************/\n/******/ \t// module exports must be returned from runtime so entry inlining is disabled\n/******/ \t// startup\n/******/ \t// Load entry module and return exports\n/******/ \treturn __webpack_require__(686);\n/******/ })()\n.default;\n});", "/*!\n * escape-html\n * Copyright(c) 2012-2013 TJ Holowaychuk\n * Copyright(c) 2015 Andreas Lubbe\n * Copyright(c) 2015 Tiancheng \"Timothy\" Gu\n * MIT Licensed\n */\n\n'use strict';\n\n/**\n * Module variables.\n * @private\n */\n\nvar matchHtmlRegExp = /[\"'&<>]/;\n\n/**\n * Module exports.\n * @public\n */\n\nmodule.exports = escapeHtml;\n\n/**\n * Escape special characters in the given string of html.\n *\n * @param {string} string The string to escape for inserting into HTML\n * @return {string}\n * @public\n */\n\nfunction escapeHtml(string) {\n var str = '' + string;\n var match = matchHtmlRegExp.exec(str);\n\n if (!match) {\n return str;\n }\n\n var escape;\n var html = '';\n var index = 0;\n var lastIndex = 0;\n\n for (index = match.index; index < str.length; index++) {\n switch (str.charCodeAt(index)) {\n case 34: // \"\n escape = '"';\n break;\n case 38: // &\n escape = '&';\n break;\n case 39: // '\n escape = ''';\n break;\n case 60: // <\n escape = '<';\n break;\n case 62: // >\n escape = '>';\n break;\n default:\n continue;\n }\n\n if (lastIndex !== index) {\n html += str.substring(lastIndex, index);\n }\n\n lastIndex = index + 1;\n html += escape;\n }\n\n return lastIndex !== index\n ? html + str.substring(lastIndex, index)\n : html;\n}\n", "Array.prototype.flat||Object.defineProperty(Array.prototype,\"flat\",{configurable:!0,value:function r(){var t=isNaN(arguments[0])?1:Number(arguments[0]);return t?Array.prototype.reduce.call(this,function(a,e){return Array.isArray(e)?a.push.apply(a,r.call(e,t-1)):a.push(e),a},[]):Array.prototype.slice.call(this)},writable:!0}),Array.prototype.flatMap||Object.defineProperty(Array.prototype,\"flatMap\",{configurable:!0,value:function(r){return Array.prototype.map.apply(this,arguments).flat()},writable:!0})\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport \"array-flat-polyfill\"\nimport \"focus-visible\"\nimport \"unfetch/polyfill\"\nimport \"url-polyfill\"\n\nimport {\n EMPTY,\n NEVER,\n Subject,\n defer,\n delay,\n filter,\n map,\n merge,\n mergeWith,\n shareReplay,\n switchMap\n} from \"rxjs\"\n\nimport { configuration, feature } from \"./_\"\nimport {\n at,\n getOptionalElement,\n requestJSON,\n setToggle,\n watchDocument,\n watchKeyboard,\n watchLocation,\n watchLocationTarget,\n watchMedia,\n watchPrint,\n watchViewport\n} from \"./browser\"\nimport {\n getComponentElement,\n getComponentElements,\n mountBackToTop,\n mountContent,\n mountDialog,\n mountHeader,\n mountHeaderTitle,\n mountPalette,\n mountSearch,\n mountSearchHiglight,\n mountSidebar,\n mountSource,\n mountTableOfContents,\n mountTabs,\n watchHeader,\n watchMain\n} from \"./components\"\nimport {\n SearchIndex,\n setupClipboardJS,\n setupInstantLoading,\n setupVersionSelector\n} from \"./integrations\"\nimport {\n patchIndeterminate,\n patchScrollfix,\n patchScrolllock\n} from \"./patches\"\nimport \"./polyfills\"\n\n/* ----------------------------------------------------------------------------\n * Application\n * ------------------------------------------------------------------------- */\n\n/* Yay, JavaScript is available */\ndocument.documentElement.classList.remove(\"no-js\")\ndocument.documentElement.classList.add(\"js\")\n\n/* Set up navigation observables and subjects */\nconst document$ = watchDocument()\nconst location$ = watchLocation()\nconst target$ = watchLocationTarget()\nconst keyboard$ = watchKeyboard()\n\n/* Set up media observables */\nconst viewport$ = watchViewport()\nconst tablet$ = watchMedia(\"(min-width: 960px)\")\nconst screen$ = watchMedia(\"(min-width: 1220px)\")\nconst print$ = watchPrint()\n\n/* Retrieve search index, if search is enabled */\nconst config = configuration()\nconst index$ = document.forms.namedItem(\"search\")\n ? __search?.index || requestJSON(\n new URL(\"search/search_index.json\", config.base)\n )\n : NEVER\n\n/* Set up Clipboard.js integration */\nconst alert$ = new Subject()\nsetupClipboardJS({ alert$ })\n\n/* Set up instant loading, if enabled */\nif (feature(\"navigation.instant\"))\n setupInstantLoading({ document$, location$, viewport$ })\n\n/* Set up version selector */\nif (config.version?.provider === \"mike\")\n setupVersionSelector({ document$ })\n\n/* Always close drawer and search on navigation */\nmerge(location$, target$)\n .pipe(\n delay(125)\n )\n .subscribe(() => {\n setToggle(\"drawer\", false)\n setToggle(\"search\", false)\n })\n\n/* Set up global keyboard handlers */\nkeyboard$\n .pipe(\n filter(({ mode }) => mode === \"global\")\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Go to previous page */\n case \"p\":\n case \",\":\n const prev = getOptionalElement(\"[href][rel=prev]\")\n if (typeof prev !== \"undefined\")\n prev.click()\n break\n\n /* Go to next page */\n case \"n\":\n case \".\":\n const next = getOptionalElement(\"[href][rel=next]\")\n if (typeof next !== \"undefined\")\n next.click()\n break\n }\n })\n\n/* Set up patches */\npatchIndeterminate({ document$, tablet$ })\npatchScrollfix({ document$ })\npatchScrolllock({ viewport$, tablet$ })\n\n/* Set up header and main area observable */\nconst header$ = watchHeader(getComponentElement(\"header\"), { viewport$ })\nconst main$ = document$\n .pipe(\n map(() => getComponentElement(\"main\")),\n switchMap(el => watchMain(el, { viewport$, header$ })),\n shareReplay(1)\n )\n\n/* Set up control component observables */\nconst control$ = merge(\n\n /* Dialog */\n ...getComponentElements(\"dialog\")\n .map(el => mountDialog(el, { alert$ })),\n\n /* Header */\n ...getComponentElements(\"header\")\n .map(el => mountHeader(el, { viewport$, header$, main$ })),\n\n /* Color palette */\n ...getComponentElements(\"palette\")\n .map(el => mountPalette(el)),\n\n /* Search */\n ...getComponentElements(\"search\")\n .map(el => mountSearch(el, { index$, keyboard$ })),\n\n /* Repository information */\n ...getComponentElements(\"source\")\n .map(el => mountSource(el))\n)\n\n/* Set up content component observables */\nconst content$ = defer(() => merge(\n\n /* Content */\n ...getComponentElements(\"content\")\n .map(el => mountContent(el, { target$, print$ })),\n\n /* Search highlighting */\n ...getComponentElements(\"content\")\n .map(el => feature(\"search.highlight\")\n ? mountSearchHiglight(el, { index$, location$ })\n : EMPTY\n ),\n\n /* Header title */\n ...getComponentElements(\"header-title\")\n .map(el => mountHeaderTitle(el, { viewport$, header$ })),\n\n /* Sidebar */\n ...getComponentElements(\"sidebar\")\n .map(el => el.getAttribute(\"data-md-type\") === \"navigation\"\n ? at(screen$, () => mountSidebar(el, { viewport$, header$, main$ }))\n : at(tablet$, () => mountSidebar(el, { viewport$, header$, main$ }))\n ),\n\n /* Navigation tabs */\n ...getComponentElements(\"tabs\")\n .map(el => mountTabs(el, { viewport$, header$ })),\n\n /* Table of contents */\n ...getComponentElements(\"toc\")\n .map(el => mountTableOfContents(el, { viewport$, header$, target$ })),\n\n /* Back-to-top button */\n ...getComponentElements(\"top\")\n .map(el => mountBackToTop(el, { viewport$, header$, main$, target$ }))\n))\n\n/* Set up component observables */\nconst component$ = document$\n .pipe(\n switchMap(() => content$),\n mergeWith(control$),\n shareReplay(1)\n )\n\n/* Subscribe to all components */\ncomponent$.subscribe()\n\n/* ----------------------------------------------------------------------------\n * Exports\n * ------------------------------------------------------------------------- */\n\nwindow.document$ = document$ /* Document observable */\nwindow.location$ = location$ /* Location subject */\nwindow.target$ = target$ /* Location target observable */\nwindow.keyboard$ = keyboard$ /* Keyboard observable */\nwindow.viewport$ = viewport$ /* Viewport observable */\nwindow.tablet$ = tablet$ /* Media tablet observable */\nwindow.screen$ = screen$ /* Media screen observable */\nwindow.print$ = print$ /* Media print observable */\nwindow.alert$ = alert$ /* Alert subject */\nwindow.component$ = component$ /* Component observable */\n", "self.fetch||(self.fetch=function(e,n){return n=n||{},new Promise(function(t,s){var r=new XMLHttpRequest,o=[],u=[],i={},a=function(){return{ok:2==(r.status/100|0),statusText:r.statusText,status:r.status,url:r.responseURL,text:function(){return Promise.resolve(r.responseText)},json:function(){return Promise.resolve(r.responseText).then(JSON.parse)},blob:function(){return Promise.resolve(new Blob([r.response]))},clone:a,headers:{keys:function(){return o},entries:function(){return u},get:function(e){return i[e.toLowerCase()]},has:function(e){return e.toLowerCase()in i}}}};for(var c in r.open(n.method||\"get\",e,!0),r.onload=function(){r.getAllResponseHeaders().replace(/^(.*?):[^\\S\\n]*([\\s\\S]*?)$/gm,function(e,n,t){o.push(n=n.toLowerCase()),u.push([n,t]),i[n]=i[n]?i[n]+\",\"+t:t}),t(a())},r.onerror=s,r.withCredentials=\"include\"==n.credentials,n.headers)r.setRequestHeader(c,n.headers[c]);r.send(n.body||null)})});\n", "import tslib from '../tslib.js';\r\nconst {\r\n __extends,\r\n __assign,\r\n __rest,\r\n __decorate,\r\n __param,\r\n __metadata,\r\n __awaiter,\r\n __generator,\r\n __exportStar,\r\n __createBinding,\r\n __values,\r\n __read,\r\n __spread,\r\n __spreadArrays,\r\n __spreadArray,\r\n __await,\r\n __asyncGenerator,\r\n __asyncDelegator,\r\n __asyncValues,\r\n __makeTemplateObject,\r\n __importStar,\r\n __importDefault,\r\n __classPrivateFieldGet,\r\n __classPrivateFieldSet,\r\n} = tslib;\r\nexport {\r\n __extends,\r\n __assign,\r\n __rest,\r\n __decorate,\r\n __param,\r\n __metadata,\r\n __awaiter,\r\n __generator,\r\n __exportStar,\r\n __createBinding,\r\n __values,\r\n __read,\r\n __spread,\r\n __spreadArrays,\r\n __spreadArray,\r\n __await,\r\n __asyncGenerator,\r\n __asyncDelegator,\r\n __asyncValues,\r\n __makeTemplateObject,\r\n __importStar,\r\n __importDefault,\r\n __classPrivateFieldGet,\r\n __classPrivateFieldSet,\r\n};\r\n", null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n ReplaySubject,\n Subject,\n fromEvent\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch document\n *\n * Documents are implemented as subjects, so all downstream observables are\n * automatically updated when a new document is emitted.\n *\n * @returns Document subject\n */\nexport function watchDocument(): Subject {\n const document$ = new ReplaySubject(1)\n fromEvent(document, \"DOMContentLoaded\", { once: true })\n .subscribe(() => document$.next(document))\n\n /* Return document */\n return document$\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve all elements matching the query selector\n *\n * @template T - Element type\n *\n * @param selector - Query selector\n * @param node - Node of reference\n *\n * @returns Elements\n */\nexport function getElements(\n selector: T, node?: ParentNode\n): HTMLElementTagNameMap[T][]\n\nexport function getElements(\n selector: string, node?: ParentNode\n): T[]\n\nexport function getElements(\n selector: string, node: ParentNode = document\n): T[] {\n return Array.from(node.querySelectorAll(selector))\n}\n\n/**\n * Retrieve an element matching a query selector or throw a reference error\n *\n * Note that this function assumes that the element is present. If unsure if an\n * element is existent, use the `getOptionalElement` function instead.\n *\n * @template T - Element type\n *\n * @param selector - Query selector\n * @param node - Node of reference\n *\n * @returns Element\n */\nexport function getElement(\n selector: T, node?: ParentNode\n): HTMLElementTagNameMap[T]\n\nexport function getElement(\n selector: string, node?: ParentNode\n): T\n\nexport function getElement(\n selector: string, node: ParentNode = document\n): T {\n const el = getOptionalElement(selector, node)\n if (typeof el === \"undefined\")\n throw new ReferenceError(\n `Missing element: expected \"${selector}\" to be present`\n )\n\n /* Return element */\n return el\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Retrieve an optional element matching the query selector\n *\n * @template T - Element type\n *\n * @param selector - Query selector\n * @param node - Node of reference\n *\n * @returns Element or nothing\n */\nexport function getOptionalElement(\n selector: T, node?: ParentNode\n): HTMLElementTagNameMap[T] | undefined\n\nexport function getOptionalElement(\n selector: string, node?: ParentNode\n): T | undefined\n\nexport function getOptionalElement(\n selector: string, node: ParentNode = document\n): T | undefined {\n return node.querySelector(selector) || undefined\n}\n\n/**\n * Retrieve the currently active element\n *\n * @returns Element or nothing\n */\nexport function getActiveElement(): HTMLElement | undefined {\n return document.activeElement instanceof HTMLElement\n ? document.activeElement || undefined\n : undefined\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n debounceTime,\n distinctUntilChanged,\n fromEvent,\n map,\n merge,\n startWith\n} from \"rxjs\"\n\nimport { getActiveElement } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch element focus\n *\n * Previously, this function used `focus` and `blur` events to determine whether\n * an element is focused, but this doesn't work if there are focusable elements\n * within the elements itself. A better solutions are `focusin` and `focusout`\n * events, which bubble up the tree and allow for more fine-grained control.\n *\n * `debounceTime` is necessary, because when a focus change happens inside an\n * element, the observable would first emit `false` and then `true` again.\n *\n * @param el - Element\n *\n * @returns Element focus observable\n */\nexport function watchElementFocus(\n el: HTMLElement\n): Observable {\n return merge(\n fromEvent(document.body, \"focusin\"),\n fromEvent(document.body, \"focusout\")\n )\n .pipe(\n debounceTime(1),\n map(() => {\n const active = getActiveElement()\n return typeof active !== \"undefined\"\n ? el.contains(active)\n : false\n }),\n startWith(el === getActiveElement()),\n distinctUntilChanged()\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n animationFrameScheduler,\n auditTime,\n fromEvent,\n map,\n merge,\n startWith\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Element offset\n */\nexport interface ElementOffset {\n x: number /* Horizontal offset */\n y: number /* Vertical offset */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve element offset\n *\n * @param el - Element\n *\n * @returns Element offset\n */\nexport function getElementOffset(\n el: HTMLElement\n): ElementOffset {\n return {\n x: el.offsetLeft,\n y: el.offsetTop\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch element offset\n *\n * @param el - Element\n *\n * @returns Element offset observable\n */\nexport function watchElementOffset(\n el: HTMLElement\n): Observable {\n return merge(\n fromEvent(window, \"load\"),\n fromEvent(window, \"resize\")\n )\n .pipe(\n auditTime(0, animationFrameScheduler),\n map(() => getElementOffset(el)),\n startWith(getElementOffset(el))\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n animationFrameScheduler,\n auditTime,\n fromEvent,\n map,\n merge,\n startWith\n} from \"rxjs\"\n\nimport { ElementOffset } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve element content offset (= scroll offset)\n *\n * @param el - Element\n *\n * @returns Element content offset\n */\nexport function getElementContentOffset(\n el: HTMLElement\n): ElementOffset {\n return {\n x: el.scrollLeft,\n y: el.scrollTop\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch element content offset\n *\n * @param el - Element\n *\n * @returns Element content offset observable\n */\nexport function watchElementContentOffset(\n el: HTMLElement\n): Observable {\n return merge(\n fromEvent(el, \"scroll\"),\n fromEvent(window, \"resize\")\n )\n .pipe(\n auditTime(0, animationFrameScheduler),\n map(() => getElementContentOffset(el)),\n startWith(getElementContentOffset(el))\n )\n}\n", "/**\r\n * A collection of shims that provide minimal functionality of the ES6 collections.\r\n *\r\n * These implementations are not meant to be used outside of the ResizeObserver\r\n * modules as they cover only a limited range of use cases.\r\n */\r\n/* eslint-disable require-jsdoc, valid-jsdoc */\r\nvar MapShim = (function () {\r\n if (typeof Map !== 'undefined') {\r\n return Map;\r\n }\r\n /**\r\n * Returns index in provided array that matches the specified key.\r\n *\r\n * @param {Array} arr\r\n * @param {*} key\r\n * @returns {number}\r\n */\r\n function getIndex(arr, key) {\r\n var result = -1;\r\n arr.some(function (entry, index) {\r\n if (entry[0] === key) {\r\n result = index;\r\n return true;\r\n }\r\n return false;\r\n });\r\n return result;\r\n }\r\n return /** @class */ (function () {\r\n function class_1() {\r\n this.__entries__ = [];\r\n }\r\n Object.defineProperty(class_1.prototype, \"size\", {\r\n /**\r\n * @returns {boolean}\r\n */\r\n get: function () {\r\n return this.__entries__.length;\r\n },\r\n enumerable: true,\r\n configurable: true\r\n });\r\n /**\r\n * @param {*} key\r\n * @returns {*}\r\n */\r\n class_1.prototype.get = function (key) {\r\n var index = getIndex(this.__entries__, key);\r\n var entry = this.__entries__[index];\r\n return entry && entry[1];\r\n };\r\n /**\r\n * @param {*} key\r\n * @param {*} value\r\n * @returns {void}\r\n */\r\n class_1.prototype.set = function (key, value) {\r\n var index = getIndex(this.__entries__, key);\r\n if (~index) {\r\n this.__entries__[index][1] = value;\r\n }\r\n else {\r\n this.__entries__.push([key, value]);\r\n }\r\n };\r\n /**\r\n * @param {*} key\r\n * @returns {void}\r\n */\r\n class_1.prototype.delete = function (key) {\r\n var entries = this.__entries__;\r\n var index = getIndex(entries, key);\r\n if (~index) {\r\n entries.splice(index, 1);\r\n }\r\n };\r\n /**\r\n * @param {*} key\r\n * @returns {void}\r\n */\r\n class_1.prototype.has = function (key) {\r\n return !!~getIndex(this.__entries__, key);\r\n };\r\n /**\r\n * @returns {void}\r\n */\r\n class_1.prototype.clear = function () {\r\n this.__entries__.splice(0);\r\n };\r\n /**\r\n * @param {Function} callback\r\n * @param {*} [ctx=null]\r\n * @returns {void}\r\n */\r\n class_1.prototype.forEach = function (callback, ctx) {\r\n if (ctx === void 0) { ctx = null; }\r\n for (var _i = 0, _a = this.__entries__; _i < _a.length; _i++) {\r\n var entry = _a[_i];\r\n callback.call(ctx, entry[1], entry[0]);\r\n }\r\n };\r\n return class_1;\r\n }());\r\n})();\n\n/**\r\n * Detects whether window and document objects are available in current environment.\r\n */\r\nvar isBrowser = typeof window !== 'undefined' && typeof document !== 'undefined' && window.document === document;\n\n// Returns global object of a current environment.\r\nvar global$1 = (function () {\r\n if (typeof global !== 'undefined' && global.Math === Math) {\r\n return global;\r\n }\r\n if (typeof self !== 'undefined' && self.Math === Math) {\r\n return self;\r\n }\r\n if (typeof window !== 'undefined' && window.Math === Math) {\r\n return window;\r\n }\r\n // eslint-disable-next-line no-new-func\r\n return Function('return this')();\r\n})();\n\n/**\r\n * A shim for the requestAnimationFrame which falls back to the setTimeout if\r\n * first one is not supported.\r\n *\r\n * @returns {number} Requests' identifier.\r\n */\r\nvar requestAnimationFrame$1 = (function () {\r\n if (typeof requestAnimationFrame === 'function') {\r\n // It's required to use a bounded function because IE sometimes throws\r\n // an \"Invalid calling object\" error if rAF is invoked without the global\r\n // object on the left hand side.\r\n return requestAnimationFrame.bind(global$1);\r\n }\r\n return function (callback) { return setTimeout(function () { return callback(Date.now()); }, 1000 / 60); };\r\n})();\n\n// Defines minimum timeout before adding a trailing call.\r\nvar trailingTimeout = 2;\r\n/**\r\n * Creates a wrapper function which ensures that provided callback will be\r\n * invoked only once during the specified delay period.\r\n *\r\n * @param {Function} callback - Function to be invoked after the delay period.\r\n * @param {number} delay - Delay after which to invoke callback.\r\n * @returns {Function}\r\n */\r\nfunction throttle (callback, delay) {\r\n var leadingCall = false, trailingCall = false, lastCallTime = 0;\r\n /**\r\n * Invokes the original callback function and schedules new invocation if\r\n * the \"proxy\" was called during current request.\r\n *\r\n * @returns {void}\r\n */\r\n function resolvePending() {\r\n if (leadingCall) {\r\n leadingCall = false;\r\n callback();\r\n }\r\n if (trailingCall) {\r\n proxy();\r\n }\r\n }\r\n /**\r\n * Callback invoked after the specified delay. It will further postpone\r\n * invocation of the original function delegating it to the\r\n * requestAnimationFrame.\r\n *\r\n * @returns {void}\r\n */\r\n function timeoutCallback() {\r\n requestAnimationFrame$1(resolvePending);\r\n }\r\n /**\r\n * Schedules invocation of the original function.\r\n *\r\n * @returns {void}\r\n */\r\n function proxy() {\r\n var timeStamp = Date.now();\r\n if (leadingCall) {\r\n // Reject immediately following calls.\r\n if (timeStamp - lastCallTime < trailingTimeout) {\r\n return;\r\n }\r\n // Schedule new call to be in invoked when the pending one is resolved.\r\n // This is important for \"transitions\" which never actually start\r\n // immediately so there is a chance that we might miss one if change\r\n // happens amids the pending invocation.\r\n trailingCall = true;\r\n }\r\n else {\r\n leadingCall = true;\r\n trailingCall = false;\r\n setTimeout(timeoutCallback, delay);\r\n }\r\n lastCallTime = timeStamp;\r\n }\r\n return proxy;\r\n}\n\n// Minimum delay before invoking the update of observers.\r\nvar REFRESH_DELAY = 20;\r\n// A list of substrings of CSS properties used to find transition events that\r\n// might affect dimensions of observed elements.\r\nvar transitionKeys = ['top', 'right', 'bottom', 'left', 'width', 'height', 'size', 'weight'];\r\n// Check if MutationObserver is available.\r\nvar mutationObserverSupported = typeof MutationObserver !== 'undefined';\r\n/**\r\n * Singleton controller class which handles updates of ResizeObserver instances.\r\n */\r\nvar ResizeObserverController = /** @class */ (function () {\r\n /**\r\n * Creates a new instance of ResizeObserverController.\r\n *\r\n * @private\r\n */\r\n function ResizeObserverController() {\r\n /**\r\n * Indicates whether DOM listeners have been added.\r\n *\r\n * @private {boolean}\r\n */\r\n this.connected_ = false;\r\n /**\r\n * Tells that controller has subscribed for Mutation Events.\r\n *\r\n * @private {boolean}\r\n */\r\n this.mutationEventsAdded_ = false;\r\n /**\r\n * Keeps reference to the instance of MutationObserver.\r\n *\r\n * @private {MutationObserver}\r\n */\r\n this.mutationsObserver_ = null;\r\n /**\r\n * A list of connected observers.\r\n *\r\n * @private {Array}\r\n */\r\n this.observers_ = [];\r\n this.onTransitionEnd_ = this.onTransitionEnd_.bind(this);\r\n this.refresh = throttle(this.refresh.bind(this), REFRESH_DELAY);\r\n }\r\n /**\r\n * Adds observer to observers list.\r\n *\r\n * @param {ResizeObserverSPI} observer - Observer to be added.\r\n * @returns {void}\r\n */\r\n ResizeObserverController.prototype.addObserver = function (observer) {\r\n if (!~this.observers_.indexOf(observer)) {\r\n this.observers_.push(observer);\r\n }\r\n // Add listeners if they haven't been added yet.\r\n if (!this.connected_) {\r\n this.connect_();\r\n }\r\n };\r\n /**\r\n * Removes observer from observers list.\r\n *\r\n * @param {ResizeObserverSPI} observer - Observer to be removed.\r\n * @returns {void}\r\n */\r\n ResizeObserverController.prototype.removeObserver = function (observer) {\r\n var observers = this.observers_;\r\n var index = observers.indexOf(observer);\r\n // Remove observer if it's present in registry.\r\n if (~index) {\r\n observers.splice(index, 1);\r\n }\r\n // Remove listeners if controller has no connected observers.\r\n if (!observers.length && this.connected_) {\r\n this.disconnect_();\r\n }\r\n };\r\n /**\r\n * Invokes the update of observers. It will continue running updates insofar\r\n * it detects changes.\r\n *\r\n * @returns {void}\r\n */\r\n ResizeObserverController.prototype.refresh = function () {\r\n var changesDetected = this.updateObservers_();\r\n // Continue running updates if changes have been detected as there might\r\n // be future ones caused by CSS transitions.\r\n if (changesDetected) {\r\n this.refresh();\r\n }\r\n };\r\n /**\r\n * Updates every observer from observers list and notifies them of queued\r\n * entries.\r\n *\r\n * @private\r\n * @returns {boolean} Returns \"true\" if any observer has detected changes in\r\n * dimensions of it's elements.\r\n */\r\n ResizeObserverController.prototype.updateObservers_ = function () {\r\n // Collect observers that have active observations.\r\n var activeObservers = this.observers_.filter(function (observer) {\r\n return observer.gatherActive(), observer.hasActive();\r\n });\r\n // Deliver notifications in a separate cycle in order to avoid any\r\n // collisions between observers, e.g. when multiple instances of\r\n // ResizeObserver are tracking the same element and the callback of one\r\n // of them changes content dimensions of the observed target. Sometimes\r\n // this may result in notifications being blocked for the rest of observers.\r\n activeObservers.forEach(function (observer) { return observer.broadcastActive(); });\r\n return activeObservers.length > 0;\r\n };\r\n /**\r\n * Initializes DOM listeners.\r\n *\r\n * @private\r\n * @returns {void}\r\n */\r\n ResizeObserverController.prototype.connect_ = function () {\r\n // Do nothing if running in a non-browser environment or if listeners\r\n // have been already added.\r\n if (!isBrowser || this.connected_) {\r\n return;\r\n }\r\n // Subscription to the \"Transitionend\" event is used as a workaround for\r\n // delayed transitions. This way it's possible to capture at least the\r\n // final state of an element.\r\n document.addEventListener('transitionend', this.onTransitionEnd_);\r\n window.addEventListener('resize', this.refresh);\r\n if (mutationObserverSupported) {\r\n this.mutationsObserver_ = new MutationObserver(this.refresh);\r\n this.mutationsObserver_.observe(document, {\r\n attributes: true,\r\n childList: true,\r\n characterData: true,\r\n subtree: true\r\n });\r\n }\r\n else {\r\n document.addEventListener('DOMSubtreeModified', this.refresh);\r\n this.mutationEventsAdded_ = true;\r\n }\r\n this.connected_ = true;\r\n };\r\n /**\r\n * Removes DOM listeners.\r\n *\r\n * @private\r\n * @returns {void}\r\n */\r\n ResizeObserverController.prototype.disconnect_ = function () {\r\n // Do nothing if running in a non-browser environment or if listeners\r\n // have been already removed.\r\n if (!isBrowser || !this.connected_) {\r\n return;\r\n }\r\n document.removeEventListener('transitionend', this.onTransitionEnd_);\r\n window.removeEventListener('resize', this.refresh);\r\n if (this.mutationsObserver_) {\r\n this.mutationsObserver_.disconnect();\r\n }\r\n if (this.mutationEventsAdded_) {\r\n document.removeEventListener('DOMSubtreeModified', this.refresh);\r\n }\r\n this.mutationsObserver_ = null;\r\n this.mutationEventsAdded_ = false;\r\n this.connected_ = false;\r\n };\r\n /**\r\n * \"Transitionend\" event handler.\r\n *\r\n * @private\r\n * @param {TransitionEvent} event\r\n * @returns {void}\r\n */\r\n ResizeObserverController.prototype.onTransitionEnd_ = function (_a) {\r\n var _b = _a.propertyName, propertyName = _b === void 0 ? '' : _b;\r\n // Detect whether transition may affect dimensions of an element.\r\n var isReflowProperty = transitionKeys.some(function (key) {\r\n return !!~propertyName.indexOf(key);\r\n });\r\n if (isReflowProperty) {\r\n this.refresh();\r\n }\r\n };\r\n /**\r\n * Returns instance of the ResizeObserverController.\r\n *\r\n * @returns {ResizeObserverController}\r\n */\r\n ResizeObserverController.getInstance = function () {\r\n if (!this.instance_) {\r\n this.instance_ = new ResizeObserverController();\r\n }\r\n return this.instance_;\r\n };\r\n /**\r\n * Holds reference to the controller's instance.\r\n *\r\n * @private {ResizeObserverController}\r\n */\r\n ResizeObserverController.instance_ = null;\r\n return ResizeObserverController;\r\n}());\n\n/**\r\n * Defines non-writable/enumerable properties of the provided target object.\r\n *\r\n * @param {Object} target - Object for which to define properties.\r\n * @param {Object} props - Properties to be defined.\r\n * @returns {Object} Target object.\r\n */\r\nvar defineConfigurable = (function (target, props) {\r\n for (var _i = 0, _a = Object.keys(props); _i < _a.length; _i++) {\r\n var key = _a[_i];\r\n Object.defineProperty(target, key, {\r\n value: props[key],\r\n enumerable: false,\r\n writable: false,\r\n configurable: true\r\n });\r\n }\r\n return target;\r\n});\n\n/**\r\n * Returns the global object associated with provided element.\r\n *\r\n * @param {Object} target\r\n * @returns {Object}\r\n */\r\nvar getWindowOf = (function (target) {\r\n // Assume that the element is an instance of Node, which means that it\r\n // has the \"ownerDocument\" property from which we can retrieve a\r\n // corresponding global object.\r\n var ownerGlobal = target && target.ownerDocument && target.ownerDocument.defaultView;\r\n // Return the local global object if it's not possible extract one from\r\n // provided element.\r\n return ownerGlobal || global$1;\r\n});\n\n// Placeholder of an empty content rectangle.\r\nvar emptyRect = createRectInit(0, 0, 0, 0);\r\n/**\r\n * Converts provided string to a number.\r\n *\r\n * @param {number|string} value\r\n * @returns {number}\r\n */\r\nfunction toFloat(value) {\r\n return parseFloat(value) || 0;\r\n}\r\n/**\r\n * Extracts borders size from provided styles.\r\n *\r\n * @param {CSSStyleDeclaration} styles\r\n * @param {...string} positions - Borders positions (top, right, ...)\r\n * @returns {number}\r\n */\r\nfunction getBordersSize(styles) {\r\n var positions = [];\r\n for (var _i = 1; _i < arguments.length; _i++) {\r\n positions[_i - 1] = arguments[_i];\r\n }\r\n return positions.reduce(function (size, position) {\r\n var value = styles['border-' + position + '-width'];\r\n return size + toFloat(value);\r\n }, 0);\r\n}\r\n/**\r\n * Extracts paddings sizes from provided styles.\r\n *\r\n * @param {CSSStyleDeclaration} styles\r\n * @returns {Object} Paddings box.\r\n */\r\nfunction getPaddings(styles) {\r\n var positions = ['top', 'right', 'bottom', 'left'];\r\n var paddings = {};\r\n for (var _i = 0, positions_1 = positions; _i < positions_1.length; _i++) {\r\n var position = positions_1[_i];\r\n var value = styles['padding-' + position];\r\n paddings[position] = toFloat(value);\r\n }\r\n return paddings;\r\n}\r\n/**\r\n * Calculates content rectangle of provided SVG element.\r\n *\r\n * @param {SVGGraphicsElement} target - Element content rectangle of which needs\r\n * to be calculated.\r\n * @returns {DOMRectInit}\r\n */\r\nfunction getSVGContentRect(target) {\r\n var bbox = target.getBBox();\r\n return createRectInit(0, 0, bbox.width, bbox.height);\r\n}\r\n/**\r\n * Calculates content rectangle of provided HTMLElement.\r\n *\r\n * @param {HTMLElement} target - Element for which to calculate the content rectangle.\r\n * @returns {DOMRectInit}\r\n */\r\nfunction getHTMLElementContentRect(target) {\r\n // Client width & height properties can't be\r\n // used exclusively as they provide rounded values.\r\n var clientWidth = target.clientWidth, clientHeight = target.clientHeight;\r\n // By this condition we can catch all non-replaced inline, hidden and\r\n // detached elements. Though elements with width & height properties less\r\n // than 0.5 will be discarded as well.\r\n //\r\n // Without it we would need to implement separate methods for each of\r\n // those cases and it's not possible to perform a precise and performance\r\n // effective test for hidden elements. E.g. even jQuery's ':visible' filter\r\n // gives wrong results for elements with width & height less than 0.5.\r\n if (!clientWidth && !clientHeight) {\r\n return emptyRect;\r\n }\r\n var styles = getWindowOf(target).getComputedStyle(target);\r\n var paddings = getPaddings(styles);\r\n var horizPad = paddings.left + paddings.right;\r\n var vertPad = paddings.top + paddings.bottom;\r\n // Computed styles of width & height are being used because they are the\r\n // only dimensions available to JS that contain non-rounded values. It could\r\n // be possible to utilize the getBoundingClientRect if only it's data wasn't\r\n // affected by CSS transformations let alone paddings, borders and scroll bars.\r\n var width = toFloat(styles.width), height = toFloat(styles.height);\r\n // Width & height include paddings and borders when the 'border-box' box\r\n // model is applied (except for IE).\r\n if (styles.boxSizing === 'border-box') {\r\n // Following conditions are required to handle Internet Explorer which\r\n // doesn't include paddings and borders to computed CSS dimensions.\r\n //\r\n // We can say that if CSS dimensions + paddings are equal to the \"client\"\r\n // properties then it's either IE, and thus we don't need to subtract\r\n // anything, or an element merely doesn't have paddings/borders styles.\r\n if (Math.round(width + horizPad) !== clientWidth) {\r\n width -= getBordersSize(styles, 'left', 'right') + horizPad;\r\n }\r\n if (Math.round(height + vertPad) !== clientHeight) {\r\n height -= getBordersSize(styles, 'top', 'bottom') + vertPad;\r\n }\r\n }\r\n // Following steps can't be applied to the document's root element as its\r\n // client[Width/Height] properties represent viewport area of the window.\r\n // Besides, it's as well not necessary as the itself neither has\r\n // rendered scroll bars nor it can be clipped.\r\n if (!isDocumentElement(target)) {\r\n // In some browsers (only in Firefox, actually) CSS width & height\r\n // include scroll bars size which can be removed at this step as scroll\r\n // bars are the only difference between rounded dimensions + paddings\r\n // and \"client\" properties, though that is not always true in Chrome.\r\n var vertScrollbar = Math.round(width + horizPad) - clientWidth;\r\n var horizScrollbar = Math.round(height + vertPad) - clientHeight;\r\n // Chrome has a rather weird rounding of \"client\" properties.\r\n // E.g. for an element with content width of 314.2px it sometimes gives\r\n // the client width of 315px and for the width of 314.7px it may give\r\n // 314px. And it doesn't happen all the time. So just ignore this delta\r\n // as a non-relevant.\r\n if (Math.abs(vertScrollbar) !== 1) {\r\n width -= vertScrollbar;\r\n }\r\n if (Math.abs(horizScrollbar) !== 1) {\r\n height -= horizScrollbar;\r\n }\r\n }\r\n return createRectInit(paddings.left, paddings.top, width, height);\r\n}\r\n/**\r\n * Checks whether provided element is an instance of the SVGGraphicsElement.\r\n *\r\n * @param {Element} target - Element to be checked.\r\n * @returns {boolean}\r\n */\r\nvar isSVGGraphicsElement = (function () {\r\n // Some browsers, namely IE and Edge, don't have the SVGGraphicsElement\r\n // interface.\r\n if (typeof SVGGraphicsElement !== 'undefined') {\r\n return function (target) { return target instanceof getWindowOf(target).SVGGraphicsElement; };\r\n }\r\n // If it's so, then check that element is at least an instance of the\r\n // SVGElement and that it has the \"getBBox\" method.\r\n // eslint-disable-next-line no-extra-parens\r\n return function (target) { return (target instanceof getWindowOf(target).SVGElement &&\r\n typeof target.getBBox === 'function'); };\r\n})();\r\n/**\r\n * Checks whether provided element is a document element ().\r\n *\r\n * @param {Element} target - Element to be checked.\r\n * @returns {boolean}\r\n */\r\nfunction isDocumentElement(target) {\r\n return target === getWindowOf(target).document.documentElement;\r\n}\r\n/**\r\n * Calculates an appropriate content rectangle for provided html or svg element.\r\n *\r\n * @param {Element} target - Element content rectangle of which needs to be calculated.\r\n * @returns {DOMRectInit}\r\n */\r\nfunction getContentRect(target) {\r\n if (!isBrowser) {\r\n return emptyRect;\r\n }\r\n if (isSVGGraphicsElement(target)) {\r\n return getSVGContentRect(target);\r\n }\r\n return getHTMLElementContentRect(target);\r\n}\r\n/**\r\n * Creates rectangle with an interface of the DOMRectReadOnly.\r\n * Spec: https://drafts.fxtf.org/geometry/#domrectreadonly\r\n *\r\n * @param {DOMRectInit} rectInit - Object with rectangle's x/y coordinates and dimensions.\r\n * @returns {DOMRectReadOnly}\r\n */\r\nfunction createReadOnlyRect(_a) {\r\n var x = _a.x, y = _a.y, width = _a.width, height = _a.height;\r\n // If DOMRectReadOnly is available use it as a prototype for the rectangle.\r\n var Constr = typeof DOMRectReadOnly !== 'undefined' ? DOMRectReadOnly : Object;\r\n var rect = Object.create(Constr.prototype);\r\n // Rectangle's properties are not writable and non-enumerable.\r\n defineConfigurable(rect, {\r\n x: x, y: y, width: width, height: height,\r\n top: y,\r\n right: x + width,\r\n bottom: height + y,\r\n left: x\r\n });\r\n return rect;\r\n}\r\n/**\r\n * Creates DOMRectInit object based on the provided dimensions and the x/y coordinates.\r\n * Spec: https://drafts.fxtf.org/geometry/#dictdef-domrectinit\r\n *\r\n * @param {number} x - X coordinate.\r\n * @param {number} y - Y coordinate.\r\n * @param {number} width - Rectangle's width.\r\n * @param {number} height - Rectangle's height.\r\n * @returns {DOMRectInit}\r\n */\r\nfunction createRectInit(x, y, width, height) {\r\n return { x: x, y: y, width: width, height: height };\r\n}\n\n/**\r\n * Class that is responsible for computations of the content rectangle of\r\n * provided DOM element and for keeping track of it's changes.\r\n */\r\nvar ResizeObservation = /** @class */ (function () {\r\n /**\r\n * Creates an instance of ResizeObservation.\r\n *\r\n * @param {Element} target - Element to be observed.\r\n */\r\n function ResizeObservation(target) {\r\n /**\r\n * Broadcasted width of content rectangle.\r\n *\r\n * @type {number}\r\n */\r\n this.broadcastWidth = 0;\r\n /**\r\n * Broadcasted height of content rectangle.\r\n *\r\n * @type {number}\r\n */\r\n this.broadcastHeight = 0;\r\n /**\r\n * Reference to the last observed content rectangle.\r\n *\r\n * @private {DOMRectInit}\r\n */\r\n this.contentRect_ = createRectInit(0, 0, 0, 0);\r\n this.target = target;\r\n }\r\n /**\r\n * Updates content rectangle and tells whether it's width or height properties\r\n * have changed since the last broadcast.\r\n *\r\n * @returns {boolean}\r\n */\r\n ResizeObservation.prototype.isActive = function () {\r\n var rect = getContentRect(this.target);\r\n this.contentRect_ = rect;\r\n return (rect.width !== this.broadcastWidth ||\r\n rect.height !== this.broadcastHeight);\r\n };\r\n /**\r\n * Updates 'broadcastWidth' and 'broadcastHeight' properties with a data\r\n * from the corresponding properties of the last observed content rectangle.\r\n *\r\n * @returns {DOMRectInit} Last observed content rectangle.\r\n */\r\n ResizeObservation.prototype.broadcastRect = function () {\r\n var rect = this.contentRect_;\r\n this.broadcastWidth = rect.width;\r\n this.broadcastHeight = rect.height;\r\n return rect;\r\n };\r\n return ResizeObservation;\r\n}());\n\nvar ResizeObserverEntry = /** @class */ (function () {\r\n /**\r\n * Creates an instance of ResizeObserverEntry.\r\n *\r\n * @param {Element} target - Element that is being observed.\r\n * @param {DOMRectInit} rectInit - Data of the element's content rectangle.\r\n */\r\n function ResizeObserverEntry(target, rectInit) {\r\n var contentRect = createReadOnlyRect(rectInit);\r\n // According to the specification following properties are not writable\r\n // and are also not enumerable in the native implementation.\r\n //\r\n // Property accessors are not being used as they'd require to define a\r\n // private WeakMap storage which may cause memory leaks in browsers that\r\n // don't support this type of collections.\r\n defineConfigurable(this, { target: target, contentRect: contentRect });\r\n }\r\n return ResizeObserverEntry;\r\n}());\n\nvar ResizeObserverSPI = /** @class */ (function () {\r\n /**\r\n * Creates a new instance of ResizeObserver.\r\n *\r\n * @param {ResizeObserverCallback} callback - Callback function that is invoked\r\n * when one of the observed elements changes it's content dimensions.\r\n * @param {ResizeObserverController} controller - Controller instance which\r\n * is responsible for the updates of observer.\r\n * @param {ResizeObserver} callbackCtx - Reference to the public\r\n * ResizeObserver instance which will be passed to callback function.\r\n */\r\n function ResizeObserverSPI(callback, controller, callbackCtx) {\r\n /**\r\n * Collection of resize observations that have detected changes in dimensions\r\n * of elements.\r\n *\r\n * @private {Array}\r\n */\r\n this.activeObservations_ = [];\r\n /**\r\n * Registry of the ResizeObservation instances.\r\n *\r\n * @private {Map}\r\n */\r\n this.observations_ = new MapShim();\r\n if (typeof callback !== 'function') {\r\n throw new TypeError('The callback provided as parameter 1 is not a function.');\r\n }\r\n this.callback_ = callback;\r\n this.controller_ = controller;\r\n this.callbackCtx_ = callbackCtx;\r\n }\r\n /**\r\n * Starts observing provided element.\r\n *\r\n * @param {Element} target - Element to be observed.\r\n * @returns {void}\r\n */\r\n ResizeObserverSPI.prototype.observe = function (target) {\r\n if (!arguments.length) {\r\n throw new TypeError('1 argument required, but only 0 present.');\r\n }\r\n // Do nothing if current environment doesn't have the Element interface.\r\n if (typeof Element === 'undefined' || !(Element instanceof Object)) {\r\n return;\r\n }\r\n if (!(target instanceof getWindowOf(target).Element)) {\r\n throw new TypeError('parameter 1 is not of type \"Element\".');\r\n }\r\n var observations = this.observations_;\r\n // Do nothing if element is already being observed.\r\n if (observations.has(target)) {\r\n return;\r\n }\r\n observations.set(target, new ResizeObservation(target));\r\n this.controller_.addObserver(this);\r\n // Force the update of observations.\r\n this.controller_.refresh();\r\n };\r\n /**\r\n * Stops observing provided element.\r\n *\r\n * @param {Element} target - Element to stop observing.\r\n * @returns {void}\r\n */\r\n ResizeObserverSPI.prototype.unobserve = function (target) {\r\n if (!arguments.length) {\r\n throw new TypeError('1 argument required, but only 0 present.');\r\n }\r\n // Do nothing if current environment doesn't have the Element interface.\r\n if (typeof Element === 'undefined' || !(Element instanceof Object)) {\r\n return;\r\n }\r\n if (!(target instanceof getWindowOf(target).Element)) {\r\n throw new TypeError('parameter 1 is not of type \"Element\".');\r\n }\r\n var observations = this.observations_;\r\n // Do nothing if element is not being observed.\r\n if (!observations.has(target)) {\r\n return;\r\n }\r\n observations.delete(target);\r\n if (!observations.size) {\r\n this.controller_.removeObserver(this);\r\n }\r\n };\r\n /**\r\n * Stops observing all elements.\r\n *\r\n * @returns {void}\r\n */\r\n ResizeObserverSPI.prototype.disconnect = function () {\r\n this.clearActive();\r\n this.observations_.clear();\r\n this.controller_.removeObserver(this);\r\n };\r\n /**\r\n * Collects observation instances the associated element of which has changed\r\n * it's content rectangle.\r\n *\r\n * @returns {void}\r\n */\r\n ResizeObserverSPI.prototype.gatherActive = function () {\r\n var _this = this;\r\n this.clearActive();\r\n this.observations_.forEach(function (observation) {\r\n if (observation.isActive()) {\r\n _this.activeObservations_.push(observation);\r\n }\r\n });\r\n };\r\n /**\r\n * Invokes initial callback function with a list of ResizeObserverEntry\r\n * instances collected from active resize observations.\r\n *\r\n * @returns {void}\r\n */\r\n ResizeObserverSPI.prototype.broadcastActive = function () {\r\n // Do nothing if observer doesn't have active observations.\r\n if (!this.hasActive()) {\r\n return;\r\n }\r\n var ctx = this.callbackCtx_;\r\n // Create ResizeObserverEntry instance for every active observation.\r\n var entries = this.activeObservations_.map(function (observation) {\r\n return new ResizeObserverEntry(observation.target, observation.broadcastRect());\r\n });\r\n this.callback_.call(ctx, entries, ctx);\r\n this.clearActive();\r\n };\r\n /**\r\n * Clears the collection of active observations.\r\n *\r\n * @returns {void}\r\n */\r\n ResizeObserverSPI.prototype.clearActive = function () {\r\n this.activeObservations_.splice(0);\r\n };\r\n /**\r\n * Tells whether observer has active observations.\r\n *\r\n * @returns {boolean}\r\n */\r\n ResizeObserverSPI.prototype.hasActive = function () {\r\n return this.activeObservations_.length > 0;\r\n };\r\n return ResizeObserverSPI;\r\n}());\n\n// Registry of internal observers. If WeakMap is not available use current shim\r\n// for the Map collection as it has all required methods and because WeakMap\r\n// can't be fully polyfilled anyway.\r\nvar observers = typeof WeakMap !== 'undefined' ? new WeakMap() : new MapShim();\r\n/**\r\n * ResizeObserver API. Encapsulates the ResizeObserver SPI implementation\r\n * exposing only those methods and properties that are defined in the spec.\r\n */\r\nvar ResizeObserver = /** @class */ (function () {\r\n /**\r\n * Creates a new instance of ResizeObserver.\r\n *\r\n * @param {ResizeObserverCallback} callback - Callback that is invoked when\r\n * dimensions of the observed elements change.\r\n */\r\n function ResizeObserver(callback) {\r\n if (!(this instanceof ResizeObserver)) {\r\n throw new TypeError('Cannot call a class as a function.');\r\n }\r\n if (!arguments.length) {\r\n throw new TypeError('1 argument required, but only 0 present.');\r\n }\r\n var controller = ResizeObserverController.getInstance();\r\n var observer = new ResizeObserverSPI(callback, controller, this);\r\n observers.set(this, observer);\r\n }\r\n return ResizeObserver;\r\n}());\r\n// Expose public methods of ResizeObserver.\r\n[\r\n 'observe',\r\n 'unobserve',\r\n 'disconnect'\r\n].forEach(function (method) {\r\n ResizeObserver.prototype[method] = function () {\r\n var _a;\r\n return (_a = observers.get(this))[method].apply(_a, arguments);\r\n };\r\n});\n\nvar index = (function () {\r\n // Export existing implementation if available.\r\n if (typeof global$1.ResizeObserver !== 'undefined') {\r\n return global$1.ResizeObserver;\r\n }\r\n return ResizeObserver;\r\n})();\n\nexport default index;\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport ResizeObserver from \"resize-observer-polyfill\"\nimport {\n NEVER,\n Observable,\n Subject,\n defer,\n filter,\n finalize,\n map,\n merge,\n of,\n shareReplay,\n startWith,\n switchMap,\n tap\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Element offset\n */\nexport interface ElementSize {\n width: number /* Element width */\n height: number /* Element height */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Resize observer entry subject\n */\nconst entry$ = new Subject()\n\n/**\n * Resize observer observable\n *\n * This observable will create a `ResizeObserver` on the first subscription\n * and will automatically terminate it when there are no more subscribers.\n * It's quite important to centralize observation in a single `ResizeObserver`,\n * as the performance difference can be quite dramatic, as the link shows.\n *\n * @see https://bit.ly/3iIYfEm - Google Groups on performance\n */\nconst observer$ = defer(() => of(\n new ResizeObserver(entries => {\n for (const entry of entries)\n entry$.next(entry)\n })\n))\n .pipe(\n switchMap(observer => merge(NEVER, of(observer))\n .pipe(\n finalize(() => observer.disconnect())\n )\n ),\n shareReplay(1)\n )\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve element size\n *\n * @param el - Element\n *\n * @returns Element size\n */\nexport function getElementSize(\n el: HTMLElement\n): ElementSize {\n return {\n width: el.offsetWidth,\n height: el.offsetHeight\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch element size\n *\n * This function returns an observable that subscribes to a single internal\n * instance of `ResizeObserver` upon subscription, and emit resize events until\n * termination. Note that this function should not be called with the same\n * element twice, as the first unsubscription will terminate observation.\n *\n * Sadly, we can't use the `DOMRect` objects returned by the observer, because\n * we need the emitted values to be consistent with `getElementSize`, which will\n * return the used values (rounded) and not actual values (unrounded). Thus, we\n * use the `offset*` properties. See the linked GitHub issue.\n *\n * @see https://bit.ly/3m0k3he - GitHub issue\n *\n * @param el - Element\n *\n * @returns Element size observable\n */\nexport function watchElementSize(\n el: HTMLElement\n): Observable {\n return observer$\n .pipe(\n tap(observer => observer.observe(el)),\n switchMap(observer => entry$\n .pipe(\n filter(({ target }) => target === el),\n finalize(() => observer.unobserve(el)),\n map(() => getElementSize(el))\n )\n ),\n startWith(getElementSize(el))\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { ElementSize } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve element content size (= scroll width and height)\n *\n * @param el - Element\n *\n * @returns Element content size\n */\nexport function getElementContentSize(\n el: HTMLElement\n): ElementSize {\n return {\n width: el.scrollWidth,\n height: el.scrollHeight\n }\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n NEVER,\n Observable,\n Subject,\n defer,\n distinctUntilChanged,\n filter,\n finalize,\n map,\n merge,\n of,\n shareReplay,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport {\n getElementContentSize,\n getElementSize,\n watchElementContentOffset\n} from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Intersection observer entry subject\n */\nconst entry$ = new Subject()\n\n/**\n * Intersection observer observable\n *\n * This observable will create an `IntersectionObserver` on first subscription\n * and will automatically terminate it when there are no more subscribers.\n *\n * @see https://bit.ly/3iIYfEm - Google Groups on performance\n */\nconst observer$ = defer(() => of(\n new IntersectionObserver(entries => {\n for (const entry of entries)\n entry$.next(entry)\n }, {\n threshold: 0\n })\n))\n .pipe(\n switchMap(observer => merge(NEVER, of(observer))\n .pipe(\n finalize(() => observer.disconnect())\n )\n ),\n shareReplay(1)\n )\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch element visibility\n *\n * @param el - Element\n *\n * @returns Element visibility observable\n */\nexport function watchElementVisibility(\n el: HTMLElement\n): Observable {\n return observer$\n .pipe(\n tap(observer => observer.observe(el)),\n switchMap(observer => entry$\n .pipe(\n filter(({ target }) => target === el),\n finalize(() => observer.unobserve(el)),\n map(({ isIntersecting }) => isIntersecting)\n )\n )\n )\n}\n\n/**\n * Watch element boundary\n *\n * This function returns an observable which emits whether the bottom content\n * boundary (= scroll offset) of an element is within a certain threshold.\n *\n * @param el - Element\n * @param threshold - Threshold\n *\n * @returns Element boundary observable\n */\nexport function watchElementBoundary(\n el: HTMLElement, threshold = 16\n): Observable {\n return watchElementContentOffset(el)\n .pipe(\n map(({ y }) => {\n const visible = getElementSize(el)\n const content = getElementContentSize(el)\n return y >= (\n content.height - visible.height - threshold\n )\n }),\n distinctUntilChanged()\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n fromEvent,\n map,\n startWith\n} from \"rxjs\"\n\nimport { getElement } from \"../element\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Toggle\n */\nexport type Toggle =\n | \"drawer\" /* Toggle for drawer */\n | \"search\" /* Toggle for search */\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Toggle map\n */\nconst toggles: Record = {\n drawer: getElement(\"[data-md-toggle=drawer]\"),\n search: getElement(\"[data-md-toggle=search]\")\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve the value of a toggle\n *\n * @param name - Toggle\n *\n * @returns Toggle value\n */\nexport function getToggle(name: Toggle): boolean {\n return toggles[name].checked\n}\n\n/**\n * Set toggle\n *\n * Simulating a click event seems to be the most cross-browser compatible way\n * of changing the value while also emitting a `change` event. Before, Material\n * used `CustomEvent` to programmatically change the value of a toggle, but this\n * is a much simpler and cleaner solution which doesn't require a polyfill.\n *\n * @param name - Toggle\n * @param value - Toggle value\n */\nexport function setToggle(name: Toggle, value: boolean): void {\n if (toggles[name].checked !== value)\n toggles[name].click()\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch toggle\n *\n * @param name - Toggle\n *\n * @returns Toggle value observable\n */\nexport function watchToggle(name: Toggle): Observable {\n const el = toggles[name]\n return fromEvent(el, \"change\")\n .pipe(\n map(() => el.checked),\n startWith(el.checked)\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n filter,\n fromEvent,\n map,\n share\n} from \"rxjs\"\n\nimport { getActiveElement } from \"../element\"\nimport { getToggle } from \"../toggle\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Keyboard mode\n */\nexport type KeyboardMode =\n | \"global\" /* Global */\n | \"search\" /* Search is open */\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Keyboard\n */\nexport interface Keyboard {\n mode: KeyboardMode /* Keyboard mode */\n type: string /* Key type */\n claim(): void /* Key claim */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Check whether an element may receive keyboard input\n *\n * @param el - Element\n * @param type - Key type\n *\n * @returns Test result\n */\nfunction isSusceptibleToKeyboard(\n el: HTMLElement, type: string\n): boolean {\n switch (el.constructor) {\n\n /* Input elements */\n case HTMLInputElement:\n /* @ts-expect-error - omit unnecessary type cast */\n if (el.type === \"radio\")\n return /^Arrow/.test(type)\n else\n return true\n\n /* Select element and textarea */\n case HTMLSelectElement:\n case HTMLTextAreaElement:\n return true\n\n /* Everything else */\n default:\n return el.isContentEditable\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch keyboard\n *\n * @returns Keyboard observable\n */\nexport function watchKeyboard(): Observable {\n return fromEvent(window, \"keydown\")\n .pipe(\n filter(ev => !(ev.metaKey || ev.ctrlKey)),\n map(ev => ({\n mode: getToggle(\"search\") ? \"search\" : \"global\",\n type: ev.key,\n claim() {\n ev.preventDefault()\n ev.stopPropagation()\n }\n } as Keyboard)),\n filter(({ mode, type }) => {\n if (mode === \"global\") {\n const active = getActiveElement()\n if (typeof active !== \"undefined\")\n return !isSusceptibleToKeyboard(active, type)\n }\n return true\n }),\n share()\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { Subject } from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve location\n *\n * This function returns a `URL` object (and not `Location`) to normalize the\n * typings across the application. Furthermore, locations need to be tracked\n * without setting them and `Location` is a singleton which represents the\n * current location.\n *\n * @returns URL\n */\nexport function getLocation(): URL {\n return new URL(location.href)\n}\n\n/**\n * Set location\n *\n * @param url - URL to change to\n */\nexport function setLocation(url: URL): void {\n location.href = url.href\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch location\n *\n * @returns Location subject\n */\nexport function watchLocation(): Subject {\n return new Subject()\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { JSX as JSXInternal } from \"preact\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * HTML attributes\n */\ntype Attributes =\n & JSXInternal.HTMLAttributes\n & JSXInternal.SVGAttributes\n & Record\n\n/**\n * Child element\n */\ntype Child =\n | HTMLElement\n | Text\n | string\n | number\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Append a child node to an element\n *\n * @param el - Element\n * @param child - Child node(s)\n */\nfunction appendChild(el: HTMLElement, child: Child | Child[]): void {\n\n /* Handle primitive types (including raw HTML) */\n if (typeof child === \"string\" || typeof child === \"number\") {\n el.innerHTML += child.toString()\n\n /* Handle nodes */\n } else if (child instanceof Node) {\n el.appendChild(child)\n\n /* Handle nested children */\n } else if (Array.isArray(child)) {\n for (const node of child)\n appendChild(el, node)\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * JSX factory\n *\n * @template T - Element type\n *\n * @param tag - HTML tag\n * @param attributes - HTML attributes\n * @param children - Child elements\n *\n * @returns Element\n */\nexport function h(\n tag: T, attributes?: Attributes | null, ...children: Child[]\n): HTMLElementTagNameMap[T]\n\nexport function h(\n tag: string, attributes?: Attributes | null, ...children: Child[]\n): T\n\nexport function h(\n tag: string, attributes?: Attributes | null, ...children: Child[]\n): T {\n const el = document.createElement(tag)\n\n /* Set attributes, if any */\n if (attributes)\n for (const attr of Object.keys(attributes))\n if (typeof attributes[attr] !== \"boolean\")\n el.setAttribute(attr, attributes[attr])\n else if (attributes[attr])\n el.setAttribute(attr, \"\")\n\n /* Append child nodes */\n for (const child of children)\n appendChild(el, child)\n\n /* Return element */\n return el as T\n}\n\n/* ----------------------------------------------------------------------------\n * Namespace\n * ------------------------------------------------------------------------- */\n\nexport declare namespace h {\n namespace JSX {\n type Element = HTMLElement\n type IntrinsicElements = JSXInternal.IntrinsicElements\n }\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Truncate a string after the given number of characters\n *\n * This is not a very reasonable approach, since the summaries kind of suck.\n * It would be better to create something more intelligent, highlighting the\n * search occurrences and making a better summary out of it, but this note was\n * written three years ago, so who knows if we'll ever fix it.\n *\n * @param value - Value to be truncated\n * @param n - Number of characters\n *\n * @returns Truncated value\n */\nexport function truncate(value: string, n: number): string {\n let i = n\n if (value.length > i) {\n while (value[i] !== \" \" && --i > 0) { /* keep eating */ }\n return `${value.substring(0, i)}...`\n }\n return value\n}\n\n/**\n * Round a number for display with repository facts\n *\n * This is a reverse-engineered version of GitHub's weird rounding algorithm\n * for stars, forks and all other numbers. While all numbers below `1,000` are\n * returned as-is, bigger numbers are converted to fixed numbers:\n *\n * - `1,049` => `1k`\n * - `1,050` => `1.1k`\n * - `1,949` => `1.9k`\n * - `1,950` => `2k`\n *\n * @param value - Original value\n *\n * @returns Rounded value\n */\nexport function round(value: number): string {\n if (value > 999) {\n const digits = +((value - 950) % 1000 > 99)\n return `${((value + 0.000001) / 1000).toFixed(digits)}k`\n } else {\n return value.toString()\n }\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n filter,\n fromEvent,\n map,\n shareReplay,\n startWith\n} from \"rxjs\"\n\nimport { getOptionalElement } from \"~/browser\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve location hash\n *\n * @returns Location hash\n */\nexport function getLocationHash(): string {\n return location.hash.substring(1)\n}\n\n/**\n * Set location hash\n *\n * Setting a new fragment identifier via `location.hash` will have no effect\n * if the value doesn't change. When a new fragment identifier is set, we want\n * the browser to target the respective element at all times, which is why we\n * use this dirty little trick.\n *\n * @param hash - Location hash\n */\nexport function setLocationHash(hash: string): void {\n const el = h(\"a\", { href: hash })\n el.addEventListener(\"click\", ev => ev.stopPropagation())\n el.click()\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch location hash\n *\n * @returns Location hash observable\n */\nexport function watchLocationHash(): Observable {\n return fromEvent(window, \"hashchange\")\n .pipe(\n map(getLocationHash),\n startWith(getLocationHash()),\n filter(hash => hash.length > 0),\n shareReplay(1)\n )\n}\n\n/**\n * Watch location target\n *\n * @returns Location target observable\n */\nexport function watchLocationTarget(): Observable {\n return watchLocationHash()\n .pipe(\n map(id => getOptionalElement(`[id=\"${id}\"]`)!),\n filter(el => typeof el !== \"undefined\")\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n fromEvent,\n fromEventPattern,\n map,\n merge,\n startWith,\n switchMap\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch media query\n *\n * Note that although `MediaQueryList.addListener` is deprecated we have to\n * use it, because it's the only way to ensure proper downward compatibility.\n *\n * @see https://bit.ly/3dUBH2m - GitHub issue\n *\n * @param query - Media query\n *\n * @returns Media observable\n */\nexport function watchMedia(query: string): Observable {\n const media = matchMedia(query)\n return fromEventPattern(next => (\n media.addListener(() => next(media.matches))\n ))\n .pipe(\n startWith(media.matches)\n )\n}\n\n/**\n * Watch print mode\n *\n * @returns Print observable\n */\nexport function watchPrint(): Observable {\n const media = matchMedia(\"print\")\n return merge(\n fromEvent(window, \"beforeprint\").pipe(map(() => true)),\n fromEvent(window, \"afterprint\").pipe(map(() => false))\n )\n .pipe(\n startWith(media.matches)\n )\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Toggle an observable with a media observable\n *\n * @template T - Data type\n *\n * @param query$ - Media observable\n * @param factory - Observable factory\n *\n * @returns Toggled observable\n */\nexport function at(\n query$: Observable, factory: () => Observable\n): Observable {\n return query$\n .pipe(\n switchMap(active => active ? factory() : EMPTY)\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n catchError,\n filter,\n from,\n map,\n shareReplay,\n switchMap\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch the given URL\n *\n * If the request fails (e.g. when dispatched from `file://` locations), the\n * observable will complete without emitting a value.\n *\n * @param url - Request URL\n * @param options - Options\n *\n * @returns Response observable\n */\nexport function request(\n url: URL | string, options: RequestInit = { credentials: \"same-origin\" }\n): Observable {\n return from(fetch(`${url}`, options))\n .pipe(\n filter(res => res.status === 200),\n catchError(() => EMPTY)\n )\n}\n\n/**\n * Fetch JSON from the given URL\n *\n * @template T - Data type\n *\n * @param url - Request URL\n * @param options - Options\n *\n * @returns Data observable\n */\nexport function requestJSON(\n url: URL | string, options?: RequestInit\n): Observable {\n return request(url, options)\n .pipe(\n switchMap(res => res.json()),\n shareReplay(1)\n )\n}\n\n/**\n * Fetch XML from the given URL\n *\n * @param url - Request URL\n * @param options - Options\n *\n * @returns Data observable\n */\nexport function requestXML(\n url: URL | string, options?: RequestInit\n): Observable {\n const dom = new DOMParser()\n return request(url, options)\n .pipe(\n switchMap(res => res.text()),\n map(res => dom.parseFromString(res, \"text/xml\")),\n shareReplay(1)\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n defer,\n finalize,\n fromEvent,\n map,\n merge,\n switchMap,\n take,\n throwError\n} from \"rxjs\"\n\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create and load a `script` element\n *\n * This function returns an observable that will emit when the script was\n * successfully loaded, or throw an error if it didn't.\n *\n * @param src - Script URL\n *\n * @returns Script observable\n */\nexport function watchScript(src: string): Observable {\n const script = h(\"script\", { src })\n return defer(() => {\n document.head.appendChild(script)\n return merge(\n fromEvent(script, \"load\"),\n fromEvent(script, \"error\")\n .pipe(\n switchMap(() => (\n throwError(() => new ReferenceError(`Invalid script: ${src}`))\n ))\n )\n )\n .pipe(\n map(() => undefined),\n finalize(() => document.head.removeChild(script)),\n take(1)\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n fromEvent,\n map,\n merge,\n startWith\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Viewport offset\n */\nexport interface ViewportOffset {\n x: number /* Horizontal offset */\n y: number /* Vertical offset */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve viewport offset\n *\n * On iOS Safari, viewport offset can be negative due to overflow scrolling.\n * As this may induce strange behaviors downstream, we'll just limit it to 0.\n *\n * @returns Viewport offset\n */\nexport function getViewportOffset(): ViewportOffset {\n return {\n x: Math.max(0, scrollX),\n y: Math.max(0, scrollY)\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch viewport offset\n *\n * @returns Viewport offset observable\n */\nexport function watchViewportOffset(): Observable {\n return merge(\n fromEvent(window, \"scroll\", { passive: true }),\n fromEvent(window, \"resize\", { passive: true })\n )\n .pipe(\n map(getViewportOffset),\n startWith(getViewportOffset())\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n fromEvent,\n map,\n startWith\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Viewport size\n */\nexport interface ViewportSize {\n width: number /* Viewport width */\n height: number /* Viewport height */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve viewport size\n *\n * @returns Viewport size\n */\nexport function getViewportSize(): ViewportSize {\n return {\n width: innerWidth,\n height: innerHeight\n }\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Watch viewport size\n *\n * @returns Viewport size observable\n */\nexport function watchViewportSize(): Observable {\n return fromEvent(window, \"resize\", { passive: true })\n .pipe(\n map(getViewportSize),\n startWith(getViewportSize())\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n combineLatest,\n map,\n shareReplay\n} from \"rxjs\"\n\nimport {\n ViewportOffset,\n watchViewportOffset\n} from \"../offset\"\nimport {\n ViewportSize,\n watchViewportSize\n} from \"../size\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Viewport\n */\nexport interface Viewport {\n offset: ViewportOffset /* Viewport offset */\n size: ViewportSize /* Viewport size */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch viewport\n *\n * @returns Viewport observable\n */\nexport function watchViewport(): Observable {\n return combineLatest([\n watchViewportOffset(),\n watchViewportSize()\n ])\n .pipe(\n map(([offset, size]) => ({ offset, size })),\n shareReplay(1)\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n combineLatest,\n distinctUntilKeyChanged,\n map\n} from \"rxjs\"\n\nimport { Header } from \"~/components\"\n\nimport { getElementOffset } from \"../../element\"\nimport { Viewport } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable /* Viewport observable */\n header$: Observable
/* Header observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch viewport relative to element\n *\n * @param el - Element\n * @param options - Options\n *\n * @returns Viewport observable\n */\nexport function watchViewportAt(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable {\n const size$ = viewport$\n .pipe(\n distinctUntilKeyChanged(\"size\")\n )\n\n /* Compute element offset */\n const offset$ = combineLatest([size$, header$])\n .pipe(\n map(() => getElementOffset(el))\n )\n\n /* Compute relative viewport, return hot observable */\n return combineLatest([header$, viewport$, offset$])\n .pipe(\n map(([{ height }, { offset, size }, { x, y }]) => ({\n offset: {\n x: offset.x - x,\n y: offset.y - y + height\n },\n size\n }))\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n fromEvent,\n map,\n share,\n switchMap,\n tap,\n throttle\n} from \"rxjs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Worker message\n */\nexport interface WorkerMessage {\n type: unknown /* Message type */\n data?: unknown /* Message data */\n}\n\n/**\n * Worker handler\n *\n * @template T - Message type\n */\nexport interface WorkerHandler<\n T extends WorkerMessage\n> {\n tx$: Subject /* Message transmission subject */\n rx$: Observable /* Message receive observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n *\n * @template T - Worker message type\n */\ninterface WatchOptions {\n tx$: Observable /* Message transmission observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch a web worker\n *\n * This function returns an observable that sends all values emitted by the\n * message observable to the web worker. Web worker communication is expected\n * to be bidirectional (request-response) and synchronous. Messages that are\n * emitted during a pending request are throttled, the last one is emitted.\n *\n * @param worker - Web worker\n * @param options - Options\n *\n * @returns Worker message observable\n */\nexport function watchWorker(\n worker: Worker, { tx$ }: WatchOptions\n): Observable {\n\n /* Intercept messages from worker-like objects */\n const rx$ = fromEvent(worker, \"message\")\n .pipe(\n map(({ data }) => data as T)\n )\n\n /* Send and receive messages, return hot observable */\n return tx$\n .pipe(\n throttle(() => rx$, { leading: true, trailing: true }),\n tap(message => worker.postMessage(message)),\n switchMap(() => rx$),\n share()\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { getElement, getLocation } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Feature flag\n */\nexport type Flag =\n | \"content.code.annotate\" /* Code annotations */\n | \"header.autohide\" /* Hide header */\n | \"navigation.expand\" /* Automatic expansion */\n | \"navigation.indexes\" /* Section pages */\n | \"navigation.instant\" /* Instant loading */\n | \"navigation.sections\" /* Section navigation */\n | \"navigation.tabs\" /* Tabs navigation */\n | \"navigation.tabs.sticky\" /* Tabs navigation (sticky) */\n | \"navigation.top\" /* Back-to-top button */\n | \"navigation.tracking\" /* Anchor tracking */\n | \"search.highlight\" /* Search highlighting */\n | \"search.share\" /* Search sharing */\n | \"search.suggest\" /* Search suggestions */\n | \"toc.integrate\" /* Integrated table of contents */\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Translation\n */\nexport type Translation =\n | \"clipboard.copy\" /* Copy to clipboard */\n | \"clipboard.copied\" /* Copied to clipboard */\n | \"search.config.lang\" /* Search language */\n | \"search.config.pipeline\" /* Search pipeline */\n | \"search.config.separator\" /* Search separator */\n | \"search.placeholder\" /* Search */\n | \"search.result.placeholder\" /* Type to start searching */\n | \"search.result.none\" /* No matching documents */\n | \"search.result.one\" /* 1 matching document */\n | \"search.result.other\" /* # matching documents */\n | \"search.result.more.one\" /* 1 more on this page */\n | \"search.result.more.other\" /* # more on this page */\n | \"search.result.term.missing\" /* Missing */\n | \"select.version.title\" /* Version selector */\n\n/**\n * Translations\n */\nexport type Translations = Record\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Versioning\n */\nexport interface Versioning {\n provider: \"mike\" /* Version provider */\n default?: string /* Default version */\n}\n\n/**\n * Configuration\n */\nexport interface Config {\n base: string /* Base URL */\n features: Flag[] /* Feature flags */\n translations: Translations /* Translations */\n search: string /* Search worker URL */\n version?: Versioning /* Versioning */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve global configuration and make base URL absolute\n */\nconst script = getElement(\"#__config\")\nconst config: Config = JSON.parse(script.textContent!)\nconfig.base = `${new URL(config.base, getLocation())}`\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve global configuration\n *\n * @returns Global configuration\n */\nexport function configuration(): Config {\n return config\n}\n\n/**\n * Check whether a feature flag is enabled\n *\n * @param flag - Feature flag\n *\n * @returns Test result\n */\nexport function feature(flag: Flag): boolean {\n return config.features.includes(flag)\n}\n\n/**\n * Retrieve the translation for the given key\n *\n * @param key - Key to be translated\n * @param value - Positional value, if any\n *\n * @returns Translation\n */\nexport function translation(\n key: Translation, value?: string | number\n): string {\n return typeof value !== \"undefined\"\n ? config.translations[key].replace(\"#\", value.toString())\n : config.translations[key]\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { getElement, getElements } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Component type\n */\nexport type ComponentType =\n | \"announce\" /* Announcement bar */\n | \"container\" /* Container */\n | \"content\" /* Content */\n | \"dialog\" /* Dialog */\n | \"header\" /* Header */\n | \"header-title\" /* Header title */\n | \"header-topic\" /* Header topic */\n | \"main\" /* Main area */\n | \"outdated\" /* Version warning */\n | \"palette\" /* Color palette */\n | \"search\" /* Search */\n | \"search-query\" /* Search input */\n | \"search-result\" /* Search results */\n | \"search-share\" /* Search sharing */\n | \"search-suggest\" /* Search suggestions */\n | \"sidebar\" /* Sidebar */\n | \"skip\" /* Skip link */\n | \"source\" /* Repository information */\n | \"tabs\" /* Navigation tabs */\n | \"toc\" /* Table of contents */\n | \"top\" /* Back-to-top button */\n\n/**\n * Component\n *\n * @template T - Component type\n * @template U - Reference type\n */\nexport type Component<\n T extends {} = {},\n U extends HTMLElement = HTMLElement\n> =\n T & {\n ref: U /* Component reference */\n }\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Component type map\n */\ninterface ComponentTypeMap {\n \"announce\": HTMLElement /* Announcement bar */\n \"container\": HTMLElement /* Container */\n \"content\": HTMLElement /* Content */\n \"dialog\": HTMLElement /* Dialog */\n \"header\": HTMLElement /* Header */\n \"header-title\": HTMLElement /* Header title */\n \"header-topic\": HTMLElement /* Header topic */\n \"main\": HTMLElement /* Main area */\n \"outdated\": HTMLElement /* Version warning */\n \"palette\": HTMLElement /* Color palette */\n \"search\": HTMLElement /* Search */\n \"search-query\": HTMLInputElement /* Search input */\n \"search-result\": HTMLElement /* Search results */\n \"search-share\": HTMLAnchorElement /* Search sharing */\n \"search-suggest\": HTMLElement /* Search suggestions */\n \"sidebar\": HTMLElement /* Sidebar */\n \"skip\": HTMLAnchorElement /* Skip link */\n \"source\": HTMLAnchorElement /* Repository information */\n \"tabs\": HTMLElement /* Navigation tabs */\n \"toc\": HTMLElement /* Table of contents */\n \"top\": HTMLAnchorElement /* Back-to-top button */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Retrieve the element for a given component or throw a reference error\n *\n * @template T - Component type\n *\n * @param type - Component type\n * @param node - Node of reference\n *\n * @returns Element\n */\nexport function getComponentElement(\n type: T, node: ParentNode = document\n): ComponentTypeMap[T] {\n return getElement(`[data-md-component=${type}]`, node)\n}\n\n/**\n * Retrieve all elements for a given component\n *\n * @template T - Component type\n *\n * @param type - Component type\n * @param node - Node of reference\n *\n * @returns Elements\n */\nexport function getComponentElements(\n type: T, node: ParentNode = document\n): ComponentTypeMap[T][] {\n return getElements(`[data-md-component=${type}]`, node)\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport ClipboardJS from \"clipboard\"\nimport {\n EMPTY,\n Observable,\n Subject,\n defer,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n filter,\n finalize,\n map,\n mergeWith,\n switchMap,\n take,\n takeLast,\n takeUntil,\n tap\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n getElementContentSize,\n watchElementSize,\n watchElementVisibility\n} from \"~/browser\"\nimport { renderClipboardButton } from \"~/templates\"\n\nimport { Component } from \"../../../_\"\nimport {\n Annotation,\n mountAnnotationList\n} from \"../../annotation\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Code block\n */\nexport interface CodeBlock {\n scrollable: boolean /* Code block overflows */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n print$: Observable /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Global sequence number for Clipboard.js integration\n */\nlet sequence = 0\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Find candidate list element directly following a code block\n *\n * @param el - Code block element\n *\n * @returns List element or nothing\n */\nfunction findCandidateList(el: HTMLElement): HTMLElement | undefined {\n if (el.nextElementSibling) {\n const sibling = el.nextElementSibling as HTMLElement\n if (sibling.tagName === \"OL\")\n return sibling\n\n /* Skip empty paragraphs - see https://bit.ly/3r4ZJ2O */\n else if (sibling.tagName === \"P\" && !sibling.children.length)\n return findCandidateList(sibling)\n }\n\n /* Everything else */\n return undefined\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch code block\n *\n * This function monitors size changes of the viewport, as well as switches of\n * content tabs with embedded code blocks, as both may trigger overflow.\n *\n * @param el - Code block element\n *\n * @returns Code block observable\n */\nexport function watchCodeBlock(\n el: HTMLElement\n): Observable {\n return watchElementSize(el)\n .pipe(\n map(({ width }) => {\n const content = getElementContentSize(el)\n return {\n scrollable: content.width > width\n }\n }),\n distinctUntilKeyChanged(\"scrollable\")\n )\n}\n\n/**\n * Mount code block\n *\n * This function ensures that an overflowing code block is focusable through\n * keyboard, so it can be scrolled without a mouse to improve on accessibility.\n * Furthermore, if code annotations are enabled, they are mounted if and only\n * if the code block is currently visible, e.g., not in a hidden content tab.\n *\n * @param el - Code block element\n * @param options - Options\n *\n * @returns Code block and annotation component observable\n */\nexport function mountCodeBlock(\n el: HTMLElement, options: MountOptions\n): Observable> {\n const { matches: hover } = matchMedia(\"(hover)\")\n\n /* Defer mounting of code block - see https://bit.ly/3vHVoVD */\n const factory$ = defer(() => {\n const push$ = new Subject()\n push$.subscribe(({ scrollable }) => {\n if (scrollable && hover)\n el.setAttribute(\"tabindex\", \"0\")\n else\n el.removeAttribute(\"tabindex\")\n })\n\n /* Render button for Clipboard.js integration */\n if (ClipboardJS.isSupported()) {\n const parent = el.closest(\"pre\")!\n parent.id = `__code_${++sequence}`\n parent.insertBefore(\n renderClipboardButton(parent.id),\n el\n )\n }\n\n /* Handle code annotations */\n const container = el.closest([\n \":not(td):not(.code) > .highlight\",\n \".highlighttable\"\n ].join(\", \"))\n if (container instanceof HTMLElement) {\n const list = findCandidateList(container)\n\n /* Mount code annotations, if enabled */\n if (typeof list !== \"undefined\" && (\n container.classList.contains(\"annotate\") ||\n feature(\"content.code.annotate\")\n )) {\n const annotations$ = mountAnnotationList(list, el, options)\n\n /* Create and return component */\n return watchCodeBlock(el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state })),\n mergeWith(\n watchElementSize(container)\n .pipe(\n takeUntil(push$.pipe(takeLast(1))),\n map(({ width, height }) => width && height),\n distinctUntilChanged(),\n switchMap(active => active ? annotations$ : EMPTY)\n )\n )\n )\n }\n }\n\n /* Create and return component */\n return watchCodeBlock(el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n\n /* Mount code block on first sight */\n return watchElementVisibility(el)\n .pipe(\n filter(visible => visible),\n take(1),\n switchMap(() => factory$)\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render an empty annotation\n *\n * @param id - Annotation identifier\n *\n * @returns Element\n */\nexport function renderAnnotation(id: number): HTMLElement {\n return (\n \n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { translation } from \"~/_\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a 'copy-to-clipboard' button\n *\n * @param id - Unique identifier\n *\n * @returns Element\n */\nexport function renderClipboardButton(id: string): HTMLElement {\n return (\n code`}\n >\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { ComponentChild } from \"preact\"\n\nimport { feature, translation } from \"~/_\"\nimport {\n SearchDocument,\n SearchMetadata,\n SearchResultItem\n} from \"~/integrations/search\"\nimport { h, truncate } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Render flag\n */\nconst enum Flag {\n TEASER = 1, /* Render teaser */\n PARENT = 2 /* Render as parent */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper function\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a search document\n *\n * @param document - Search document\n * @param flag - Render flags\n *\n * @returns Element\n */\nfunction renderSearchDocument(\n document: SearchDocument & SearchMetadata, flag: Flag\n): HTMLElement {\n const parent = flag & Flag.PARENT\n const teaser = flag & Flag.TEASER\n\n /* Render missing query terms */\n const missing = Object.keys(document.terms)\n .filter(key => !document.terms[key])\n .reduce((list, key) => [\n ...list, {key}, \" \"\n ], [])\n .slice(0, -1)\n\n /* Assemble query string for highlighting */\n const url = new URL(document.location)\n if (feature(\"search.highlight\"))\n url.searchParams.set(\"h\", Object.entries(document.terms)\n .filter(([, match]) => match)\n .reduce((highlight, [value]) => `${highlight} ${value}`.trim(), \"\")\n )\n\n /* Render article or section, depending on flags */\n return (\n \n \n {parent > 0 &&
}\n

{document.title}

\n {teaser > 0 && document.text.length > 0 &&\n

\n {truncate(document.text, 320)}\n

\n }\n {document.tags && document.tags.map(tag => (\n {tag}\n ))}\n {teaser > 0 && missing.length > 0 &&\n

\n {translation(\"search.result.term.missing\")}: {...missing}\n

\n }\n \n \n )\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a search result\n *\n * @param result - Search result\n *\n * @returns Element\n */\nexport function renderSearchResultItem(\n result: SearchResultItem\n): HTMLElement {\n const threshold = result[0].score\n const docs = [...result]\n\n /* Find and extract parent article */\n const parent = docs.findIndex(doc => !doc.location.includes(\"#\"))\n const [article] = docs.splice(parent, 1)\n\n /* Determine last index above threshold */\n let index = docs.findIndex(doc => doc.score < threshold)\n if (index === -1)\n index = docs.length\n\n /* Partition sections */\n const best = docs.slice(0, index)\n const more = docs.slice(index)\n\n /* Render children */\n const children = [\n renderSearchDocument(article, Flag.PARENT | +(!parent && index === 0)),\n ...best.map(section => renderSearchDocument(section, Flag.TEASER)),\n ...more.length ? [\n
\n \n {more.length > 0 && more.length === 1\n ? translation(\"search.result.more.one\")\n : translation(\"search.result.more.other\", more.length)\n }\n \n {...more.map(section => renderSearchDocument(section, Flag.TEASER))}\n
\n ] : []\n ]\n\n /* Render search result */\n return (\n
  • \n {children}\n
    • \n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { SourceFacts } from \"~/components\"\nimport { h, round } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render repository facts\n *\n * @param facts - Repository facts\n *\n * @returns Element\n */\nexport function renderSourceFacts(facts: SourceFacts): HTMLElement {\n return (\n
      \n {Object.entries(facts).map(([key, value]) => (\n
    • \n {typeof value === \"number\" ? round(value) : value}\n
      • \n ))}\n
    \n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a table inside a wrapper to improve scrolling on mobile\n *\n * @param table - Table element\n *\n * @returns Element\n */\nexport function renderTable(table: HTMLElement): HTMLElement {\n return (\n
    \n
    \n {table}\n
    \n
    \n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { configuration, translation } from \"~/_\"\nimport { h } from \"~/utilities\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Version\n */\nexport interface Version {\n version: string /* Version identifier */\n title: string /* Version title */\n aliases: string[] /* Version aliases */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a version\n *\n * @param version - Version\n *\n * @returns Element\n */\nfunction renderVersion(version: Version): HTMLElement {\n const config = configuration()\n\n /* Ensure trailing slash, see https://bit.ly/3rL5u3f */\n const url = new URL(`../${version.version}/`, config.base)\n return (\n
  • \n \n {version.title}\n \n
    • \n )\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Render a version selector\n *\n * @param versions - Versions\n * @param active - Active version\n *\n * @returns Element\n */\nexport function renderVersionSelector(\n versions: Version[], active: Version\n): HTMLElement {\n return (\n
    \n \n {active.title}\n \n
      \n {versions.map(renderVersion)}\n
    \n
    \n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n animationFrameScheduler,\n combineLatest,\n defer,\n finalize,\n fromEvent,\n map,\n switchMap,\n take,\n tap,\n throttleTime\n} from \"rxjs\"\n\nimport {\n ElementOffset,\n getElement,\n getElementSize,\n watchElementContentOffset,\n watchElementFocus,\n watchElementOffset\n} from \"~/browser\"\n\nimport { Component } from \"../../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Annotation\n */\nexport interface Annotation {\n active: boolean /* Annotation is active */\n offset: ElementOffset /* Annotation offset */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch annotation\n *\n * @param el - Annotation element\n * @param container - Containing element\n *\n * @returns Annotation observable\n */\nexport function watchAnnotation(\n el: HTMLElement, container: HTMLElement\n): Observable {\n const offset$ = defer(() => combineLatest([\n watchElementOffset(el),\n watchElementContentOffset(container)\n ]))\n .pipe(\n map(([{ x, y }, scroll]) => {\n const { width } = getElementSize(el)\n return ({\n x: x - scroll.x + width / 2,\n y: y - scroll.y\n })\n })\n )\n\n /* Actively watch annotation on focus */\n return watchElementFocus(el)\n .pipe(\n switchMap(active => offset$\n .pipe(\n map(offset => ({ active, offset })),\n take(+!active || Infinity)\n )\n )\n )\n}\n\n/**\n * Mount annotation\n *\n * @param el - Annotation element\n * @param container - Containing element\n *\n * @returns Annotation component observable\n */\nexport function mountAnnotation(\n el: HTMLElement, container: HTMLElement\n): Observable> {\n return defer(() => {\n const push$ = new Subject()\n push$.subscribe({\n\n /* Handle emission */\n next({ offset }) {\n el.style.setProperty(\"--md-tooltip-x\", `${offset.x}px`)\n el.style.setProperty(\"--md-tooltip-y\", `${offset.y}px`)\n },\n\n /* Handle complete */\n complete() {\n el.style.removeProperty(\"--md-tooltip-x\")\n el.style.removeProperty(\"--md-tooltip-y\")\n }\n })\n\n /* Track relative origin of tooltip */\n push$\n .pipe(\n throttleTime(500, animationFrameScheduler),\n map(() => container.getBoundingClientRect()),\n map(({ x }) => x)\n )\n .subscribe({\n\n /* Handle emission */\n next(origin) {\n if (origin)\n el.style.setProperty(\"--md-tooltip-0\", `${-origin}px`)\n else\n el.style.removeProperty(\"--md-tooltip-0\")\n },\n\n /* Handle complete */\n complete() {\n el.style.removeProperty(\"--md-tooltip-0\")\n }\n })\n\n /* Close open annotation on click */\n const index = getElement(\":scope > :last-child\", el)\n const blur$ = fromEvent(index, \"mousedown\", { once: true })\n push$\n .pipe(\n switchMap(({ active }) => active ? blur$ : EMPTY),\n tap(ev => ev.preventDefault())\n )\n .subscribe(() => el.blur())\n\n /* Create and return component */\n return watchAnnotation(el, container)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n defer,\n finalize,\n merge,\n share,\n takeLast,\n takeUntil\n} from \"rxjs\"\n\nimport {\n getElement,\n getElements,\n getOptionalElement\n} from \"~/browser\"\nimport { renderAnnotation } from \"~/templates\"\n\nimport { Component } from \"../../../_\"\nimport {\n Annotation,\n mountAnnotation\n} from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n print$: Observable /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Find all annotation markers in the given code block\n *\n * @param container - Containing element\n *\n * @returns Annotation markers\n */\nfunction findAnnotationMarkers(container: HTMLElement): Text[] {\n const markers: Text[] = []\n for (const comment of getElements(\".c, .c1, .cm\", container)) {\n let match: RegExpExecArray | null\n\n /* Split text at marker and add to list */\n let text = comment.firstChild as Text\n if (text instanceof Text)\n while ((match = /\\((\\d+)\\)/.exec(text.textContent!))) {\n const marker = text.splitText(match.index)\n text = marker.splitText(match[0].length)\n markers.push(marker)\n }\n }\n return markers\n}\n\n/**\n * Swap the child nodes of two elements\n *\n * @param source - Source element\n * @param target - Target element\n */\nfunction swap(source: HTMLElement, target: HTMLElement): void {\n target.append(...Array.from(source.childNodes))\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount annotation list\n *\n * This function analyzes the containing code block and checks for markers\n * referring to elements in the given annotation list. If no markers are found,\n * the list is left untouched. Otherwise, list elements are rendered as\n * annotations inside the code block.\n *\n * @param el - Annotation list element\n * @param container - Containing element\n * @param options - Options\n *\n * @returns Annotation component observable\n */\nexport function mountAnnotationList(\n el: HTMLElement, container: HTMLElement, { print$ }: MountOptions\n): Observable> {\n\n /* Find and replace all markers with empty annotations */\n const annotations = new Map()\n for (const marker of findAnnotationMarkers(container)) {\n const [, id] = marker.textContent!.match(/\\((\\d+)\\)/)!\n if (getOptionalElement(`li:nth-child(${id})`, el)) {\n annotations.set(+id, renderAnnotation(+id))\n marker.replaceWith(annotations.get(+id)!)\n }\n }\n\n /* Keep list if there are no annotations to render */\n if (annotations.size === 0)\n return EMPTY\n\n /* Create and return component */\n return defer(() => {\n const done$ = new Subject()\n\n /* Handle print mode - see https://bit.ly/3rgPdpt */\n print$\n .pipe(\n takeUntil(done$.pipe(takeLast(1)))\n )\n .subscribe(active => {\n el.hidden = !active\n\n /* Show annotations in code block or list (print) */\n for (const [id, annotation] of annotations) {\n const inner = getElement(\".md-typeset\", annotation)\n const child = getElement(`li:nth-child(${id})`, el)\n if (!active)\n swap(child, inner)\n else\n swap(inner, child)\n }\n })\n\n /* Create and return component */\n return merge(...[...annotations]\n .map(([, annotation]) => (\n mountAnnotation(annotation, container)\n ))\n )\n .pipe(\n finalize(() => done$.complete()),\n share()\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n map,\n of,\n shareReplay,\n tap\n} from \"rxjs\"\n\nimport { watchScript } from \"~/browser\"\nimport { h } from \"~/utilities\"\n\nimport { Component } from \"../../../_\"\n\nimport themeCSS from \"./index.css\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mermaid diagram\n */\nexport interface Mermaid {}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Mermaid instance observable\n */\nlet mermaid$: Observable\n\n/**\n * Global index for Mermaid integration\n */\nlet index = 0\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch Mermaid script\n *\n * @returns Mermaid scripts observable\n */\nfunction fetchScripts(): Observable {\n return typeof mermaid === \"undefined\" || mermaid instanceof Element\n ? watchScript(\"https://unpkg.com/mermaid@8.13.3/dist/mermaid.min.js\")\n : of(undefined)\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount Mermaid diagram\n *\n * @param el - Code block element\n *\n * @returns Mermaid diagram component observable\n */\nexport function mountMermaid(\n el: HTMLElement\n): Observable> {\n el.classList.remove(\"mermaid\") // Hack: mitigate https://bit.ly/3CiN6Du\n mermaid$ ||= fetchScripts()\n .pipe(\n tap(() => mermaid.initialize({\n startOnLoad: false,\n themeCSS\n })),\n map(() => undefined),\n shareReplay(1)\n )\n\n /* Render diagram */\n mermaid$.subscribe(() => {\n el.classList.add(\"mermaid\") // Hack: mitigate https://bit.ly/3CiN6Du\n const id = `__mermaid_${index++}`\n const host = h(\"div\", { class: \"mermaid\" })\n mermaid.mermaidAPI.render(id, el.textContent, (svg: string) => {\n\n /* Create a shadow root and inject diagram */\n const shadow = host.attachShadow({ mode: \"closed\" })\n shadow.innerHTML = svg\n\n /* Replace code block with diagram */\n el.replaceWith(host)\n })\n })\n\n /* Create and return component */\n return mermaid$\n .pipe(\n map(() => ({ ref: el }))\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n defer,\n filter,\n finalize,\n map,\n merge,\n tap\n} from \"rxjs\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Details\n */\nexport interface Details {\n action: \"open\" | \"close\" /* Details state */\n reveal?: boolean /* Details is revealed */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n target$: Observable /* Location target observable */\n print$: Observable /* Media print observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable /* Location target observable */\n print$: Observable /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch details\n *\n * @param el - Details element\n * @param options - Options\n *\n * @returns Details observable\n */\nexport function watchDetails(\n el: HTMLDetailsElement, { target$, print$ }: WatchOptions\n): Observable
    {\n let open = true\n return merge(\n\n /* Open and focus details on location target */\n target$\n .pipe(\n map(target => target.closest(\"details:not([open])\")!),\n filter(details => el === details),\n map(() => ({\n action: \"open\", reveal: true\n }) as Details)\n ),\n\n /* Open details on print and close afterwards */\n print$\n .pipe(\n filter(active => active || !open),\n tap(() => open = el.open),\n map(active => ({\n action: active ? \"open\" : \"close\"\n }) as Details)\n )\n )\n}\n\n/**\n * Mount details\n *\n * This function ensures that `details` tags are opened on anchor jumps and\n * prior to printing, so the whole content of the page is visible.\n *\n * @param el - Details element\n * @param options - Options\n *\n * @returns Details component observable\n */\nexport function mountDetails(\n el: HTMLDetailsElement, options: MountOptions\n): Observable> {\n return defer(() => {\n const push$ = new Subject
    ()\n push$.subscribe(({ action, reveal }) => {\n if (action === \"open\")\n el.setAttribute(\"open\", \"\")\n else\n el.removeAttribute(\"open\")\n if (reveal)\n el.scrollIntoView()\n })\n\n /* Create and return component */\n return watchDetails(el, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { Observable, of } from \"rxjs\"\n\nimport { renderTable } from \"~/templates\"\nimport { h } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Data table\n */\nexport interface DataTable {}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Sentinel for replacement\n */\nconst sentinel = h(\"table\")\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount data table\n *\n * This function wraps a data table in another scrollable container, so it can\n * be smoothly scrolled on smaller screen sizes and won't break the layout.\n *\n * @param el - Data table element\n *\n * @returns Data table component observable\n */\nexport function mountDataTable(\n el: HTMLElement\n): Observable> {\n el.replaceWith(sentinel)\n sentinel.replaceWith(renderTable(el))\n\n /* Create and return component */\n return of({ ref: el })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n animationFrameScheduler,\n asyncScheduler,\n auditTime,\n combineLatest,\n defer,\n finalize,\n fromEvent,\n map,\n merge,\n startWith,\n subscribeOn,\n takeLast,\n takeUntil,\n tap\n} from \"rxjs\"\n\nimport {\n getElement,\n getElementOffset,\n getElementSize,\n getElements,\n watchElementSize\n} from \"~/browser\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Content tabs\n */\nexport interface ContentTabs {\n active: HTMLLabelElement /* Active tab label */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch content tabs\n *\n * @param el - Content tabs element\n *\n * @returns Content tabs observable\n */\nexport function watchContentTabs(\n el: HTMLElement\n): Observable {\n const inputs = getElements(\":scope > input\", el)\n const active = inputs.find(input => input.checked) || inputs[0]\n return merge(...inputs.map(input => fromEvent(input, \"change\")\n .pipe(\n map(() => ({\n active: getElement(`label[for=${input.id}]`)\n }) as ContentTabs)\n )\n ))\n .pipe(\n startWith({\n active: getElement(`label[for=${active.id}]`)\n } as ContentTabs)\n )\n}\n\n/**\n * Mount content tabs\n *\n * This function scrolls the active tab into view. While this functionality is\n * provided by browsers as part of `scrollInfoView`, browsers will always also\n * scroll the vertical axis, which we do not want. Thus, we decided to provide\n * this functionality ourselves.\n *\n * @param el - Content tabs element\n *\n * @returns Content tabs component observable\n */\nexport function mountContentTabs(\n el: HTMLElement\n): Observable> {\n const container = getElement(\".tabbed-labels\", el)\n return defer(() => {\n const push$ = new Subject()\n combineLatest([push$, watchElementSize(el)])\n .pipe(\n auditTime(1, animationFrameScheduler),\n takeUntil(push$.pipe(takeLast(1)))\n )\n .subscribe({\n\n /* Handle emission */\n next([{ active }]) {\n const offset = getElementOffset(active)\n const { width } = getElementSize(active)\n\n /* Set tab indicator offset and width */\n el.style.setProperty(\"--md-indicator-x\", `${offset.x}px`)\n el.style.setProperty(\"--md-indicator-width\", `${width}px`)\n\n /* Smoothly scroll container */\n container.scrollTo({\n behavior: \"smooth\",\n left: offset.x\n })\n },\n\n /* Handle complete */\n complete() {\n el.style.removeProperty(\"--md-indicator-x\")\n el.style.removeProperty(\"--md-indicator-width\")\n }\n })\n\n /* Create and return component */\n return watchContentTabs(el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n .pipe(\n subscribeOn(asyncScheduler)\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { Observable, merge } from \"rxjs\"\n\nimport { getElements } from \"~/browser\"\n\nimport { Component } from \"../../_\"\nimport { Annotation } from \"../annotation\"\nimport {\n CodeBlock,\n Mermaid,\n mountCodeBlock,\n mountMermaid\n} from \"../code\"\nimport {\n Details,\n mountDetails\n} from \"../details\"\nimport {\n DataTable,\n mountDataTable\n} from \"../table\"\nimport {\n ContentTabs,\n mountContentTabs\n} from \"../tabs\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Content\n */\nexport type Content =\n | Annotation\n | ContentTabs\n | CodeBlock\n | Mermaid\n | DataTable\n | Details\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n target$: Observable /* Location target observable */\n print$: Observable /* Media print observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount content\n *\n * This function mounts all components that are found in the content of the\n * actual article, including code blocks, data tables and details.\n *\n * @param el - Content element\n * @param options - Options\n *\n * @returns Content component observable\n */\nexport function mountContent(\n el: HTMLElement, { target$, print$ }: MountOptions\n): Observable> {\n return merge(\n\n /* Code blocks */\n ...getElements(\"pre:not(.mermaid) > code\", el)\n .map(child => mountCodeBlock(child, { print$ })),\n\n /* Mermaid diagrams */\n ...getElements(\"pre.mermaid\", el)\n .map(child => mountMermaid(child)),\n\n /* Data tables */\n ...getElements(\"table:not([class])\", el)\n .map(child => mountDataTable(child)),\n\n /* Details */\n ...getElements(\"details\", el)\n .map(child => mountDetails(child, { target$, print$ })),\n\n /* Content tabs */\n ...getElements(\"[data-tabs]\", el)\n .map(child => mountContentTabs(child))\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n defer,\n delay,\n finalize,\n map,\n merge,\n of,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport { getElement } from \"~/browser\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Dialog\n */\nexport interface Dialog {\n message: string /* Dialog message */\n active: boolean /* Dialog is active */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n alert$: Subject /* Alert subject */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n alert$: Subject /* Alert subject */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch dialog\n *\n * @param _el - Dialog element\n * @param options - Options\n *\n * @returns Dialog observable\n */\nexport function watchDialog(\n _el: HTMLElement, { alert$ }: WatchOptions\n): Observable {\n return alert$\n .pipe(\n switchMap(message => merge(\n of(true),\n of(false).pipe(delay(2000))\n )\n .pipe(\n map(active => ({ message, active }))\n )\n )\n )\n}\n\n/**\n * Mount dialog\n *\n * This function reveals the dialog in the right corner when a new alert is\n * emitted through the subject that is passed as part of the options.\n *\n * @param el - Dialog element\n * @param options - Options\n *\n * @returns Dialog component observable\n */\nexport function mountDialog(\n el: HTMLElement, options: MountOptions\n): Observable> {\n const inner = getElement(\".md-typeset\", el)\n return defer(() => {\n const push$ = new Subject()\n push$.subscribe(({ message, active }) => {\n inner.textContent = message\n if (active)\n el.setAttribute(\"data-md-state\", \"open\")\n else\n el.removeAttribute(\"data-md-state\")\n })\n\n /* Create and return component */\n return watchDialog(el, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n bufferCount,\n combineLatest,\n combineLatestWith,\n defer,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n filter,\n map,\n of,\n shareReplay,\n startWith,\n switchMap,\n takeLast,\n takeUntil\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n watchElementSize,\n watchToggle\n} from \"~/browser\"\n\nimport { Component } from \"../../_\"\nimport { Main } from \"../../main\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Header\n */\nexport interface Header {\n height: number /* Header visible height */\n hidden: boolean /* Header is hidden */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable /* Viewport observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable /* Viewport observable */\n header$: Observable
    /* Header observable */\n main$: Observable
    /* Main area observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Compute whether the header is hidden\n *\n * If the user scrolls past a certain threshold, the header can be hidden when\n * scrolling down, and shown when scrolling up.\n *\n * @param options - Options\n *\n * @returns Toggle observable\n */\nfunction isHidden({ viewport$ }: WatchOptions): Observable {\n if (!feature(\"header.autohide\"))\n return of(false)\n\n /* Compute direction and turning point */\n const direction$ = viewport$\n .pipe(\n map(({ offset: { y } }) => y),\n bufferCount(2, 1),\n map(([a, b]) => [a < b, b] as const),\n distinctUntilKeyChanged(0)\n )\n\n /* Compute whether header should be hidden */\n const hidden$ = combineLatest([viewport$, direction$])\n .pipe(\n filter(([{ offset }, [, y]]) => Math.abs(y - offset.y) > 100),\n map(([, [direction]]) => direction),\n distinctUntilChanged()\n )\n\n /* Compute threshold for hiding */\n const search$ = watchToggle(\"search\")\n return combineLatest([viewport$, search$])\n .pipe(\n map(([{ offset }, search]) => offset.y > 400 && !search),\n distinctUntilChanged(),\n switchMap(active => active ? hidden$ : of(false)),\n startWith(false)\n )\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch header\n *\n * @param el - Header element\n * @param options - Options\n *\n * @returns Header observable\n */\nexport function watchHeader(\n el: HTMLElement, options: WatchOptions\n): Observable
    {\n return defer(() => combineLatest([\n watchElementSize(el),\n isHidden(options)\n ]))\n .pipe(\n map(([{ height }, hidden]) => ({\n height,\n hidden\n })),\n distinctUntilChanged((a, b) => (\n a.height === b.height &&\n a.hidden === b.hidden\n )),\n shareReplay(1)\n )\n}\n\n/**\n * Mount header\n *\n * This function manages the different states of the header, i.e. whether it's\n * hidden or rendered with a shadow. This depends heavily on the main area.\n *\n * @param el - Header element\n * @param options - Options\n *\n * @returns Header component observable\n */\nexport function mountHeader(\n el: HTMLElement, { header$, main$ }: MountOptions\n): Observable> {\n return defer(() => {\n const push$ = new Subject
    ()\n push$\n .pipe(\n distinctUntilKeyChanged(\"active\"),\n combineLatestWith(header$)\n )\n .subscribe(([{ active }, { hidden }]) => {\n if (active)\n el.setAttribute(\"data-md-state\", hidden ? \"hidden\" : \"shadow\")\n else\n el.removeAttribute(\"data-md-state\")\n })\n\n /* Link to main area */\n main$.subscribe(push$)\n\n /* Create and return component */\n return header$\n .pipe(\n takeUntil(push$.pipe(takeLast(1))),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n defer,\n distinctUntilKeyChanged,\n finalize,\n map,\n tap\n} from \"rxjs\"\n\nimport {\n Viewport,\n getElementSize,\n getOptionalElement,\n watchViewportAt\n} from \"~/browser\"\n\nimport { Component } from \"../../_\"\nimport { Header } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Header\n */\nexport interface HeaderTitle {\n active: boolean /* Header title is active */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable /* Viewport observable */\n header$: Observable
    /* Header observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable /* Viewport observable */\n header$: Observable
    /* Header observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch header title\n *\n * @param el - Heading element\n * @param options - Options\n *\n * @returns Header title observable\n */\nexport function watchHeaderTitle(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable {\n return watchViewportAt(el, { viewport$, header$ })\n .pipe(\n map(({ offset: { y } }) => {\n const { height } = getElementSize(el)\n return {\n active: y >= height\n }\n }),\n distinctUntilKeyChanged(\"active\")\n )\n}\n\n/**\n * Mount header title\n *\n * This function swaps the header title from the site title to the title of the\n * current page when the user scrolls past the first headline.\n *\n * @param el - Header title element\n * @param options - Options\n *\n * @returns Header title component observable\n */\nexport function mountHeaderTitle(\n el: HTMLElement, options: MountOptions\n): Observable> {\n return defer(() => {\n const push$ = new Subject()\n push$.subscribe(({ active }) => {\n if (active)\n el.setAttribute(\"data-md-state\", \"active\")\n else\n el.removeAttribute(\"data-md-state\")\n })\n\n /* Obtain headline, if any */\n const heading = getOptionalElement(\"article h1\")\n if (typeof heading === \"undefined\")\n return EMPTY\n\n /* Create and return component */\n return watchHeaderTitle(heading, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n combineLatest,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n map,\n switchMap\n} from \"rxjs\"\n\nimport {\n Viewport,\n watchElementSize\n} from \"~/browser\"\n\nimport { Header } from \"../header\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Main area\n */\nexport interface Main {\n offset: number /* Main area top offset */\n height: number /* Main area visible height */\n active: boolean /* Main area is active */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable /* Viewport observable */\n header$: Observable
    /* Header observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch main area\n *\n * This function returns an observable that computes the visual parameters of\n * the main area which depends on the viewport vertical offset and height, as\n * well as the height of the header element, if the header is fixed.\n *\n * @param el - Main area element\n * @param options - Options\n *\n * @returns Main area observable\n */\nexport function watchMain(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable
    {\n\n /* Compute necessary adjustment for header */\n const adjust$ = header$\n .pipe(\n map(({ height }) => height),\n distinctUntilChanged()\n )\n\n /* Compute the main area's top and bottom borders */\n const border$ = adjust$\n .pipe(\n switchMap(() => watchElementSize(el)\n .pipe(\n map(({ height }) => ({\n top: el.offsetTop,\n bottom: el.offsetTop + height\n })),\n distinctUntilKeyChanged(\"bottom\")\n )\n )\n )\n\n /* Compute the main area's offset, visible height and if we scrolled past */\n return combineLatest([adjust$, border$, viewport$])\n .pipe(\n map(([header, { top, bottom }, { offset: { y }, size: { height } }]) => {\n height = Math.max(0, height\n - Math.max(0, top - y, header)\n - Math.max(0, height + y - bottom)\n )\n return {\n offset: top - header,\n height,\n active: top - header <= y\n }\n }),\n distinctUntilChanged((a, b) => (\n a.offset === b.offset &&\n a.height === b.height &&\n a.active === b.active\n ))\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n asyncScheduler,\n defer,\n finalize,\n fromEvent,\n map,\n mergeMap,\n observeOn,\n of,\n shareReplay,\n startWith,\n tap\n} from \"rxjs\"\n\nimport { getElements } from \"~/browser\"\n\nimport { Component } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Palette colors\n */\nexport interface PaletteColor {\n scheme?: string /* Color scheme */\n primary?: string /* Primary color */\n accent?: string /* Accent color */\n}\n\n/**\n * Palette\n */\nexport interface Palette {\n index: number /* Palette index */\n color: PaletteColor /* Palette colors */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch color palette\n *\n * @param inputs - Color palette element\n *\n * @returns Color palette observable\n */\nexport function watchPalette(\n inputs: HTMLInputElement[]\n): Observable {\n const current = __md_get(\"__palette\") || {\n index: inputs.findIndex(input => matchMedia(\n input.getAttribute(\"data-md-color-media\")!\n ).matches)\n }\n\n /* Emit changes in color palette */\n return of(...inputs)\n .pipe(\n mergeMap(input => fromEvent(input, \"change\")\n .pipe(\n map(() => input)\n )\n ),\n startWith(inputs[Math.max(0, current.index)]),\n map(input => ({\n index: inputs.indexOf(input),\n color: {\n scheme: input.getAttribute(\"data-md-color-scheme\"),\n primary: input.getAttribute(\"data-md-color-primary\"),\n accent: input.getAttribute(\"data-md-color-accent\")\n }\n } as Palette)),\n shareReplay(1)\n )\n}\n\n/**\n * Mount color palette\n *\n * @param el - Color palette element\n *\n * @returns Color palette component observable\n */\nexport function mountPalette(\n el: HTMLElement\n): Observable> {\n return defer(() => {\n const push$ = new Subject()\n push$.subscribe(palette => {\n document.body.setAttribute(\"data-md-color-switching\", \"\")\n\n /* Set color palette */\n for (const [key, value] of Object.entries(palette.color))\n document.body.setAttribute(`data-md-color-${key}`, value)\n\n /* Toggle visibility */\n for (let index = 0; index < inputs.length; index++) {\n const label = inputs[index].nextElementSibling\n if (label instanceof HTMLElement)\n label.hidden = palette.index !== index\n }\n\n /* Persist preference in local storage */\n __md_set(\"__palette\", palette)\n })\n\n /* Revert transition durations after color switch */\n push$.pipe(observeOn(asyncScheduler))\n .subscribe(() => {\n document.body.removeAttribute(\"data-md-color-switching\")\n })\n\n /* Create and return component */\n const inputs = getElements(\"input\", el)\n return watchPalette(inputs)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport ClipboardJS from \"clipboard\"\nimport {\n Observable,\n Subject,\n map,\n tap\n} from \"rxjs\"\n\nimport { translation } from \"~/_\"\nimport { getElement } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Setup options\n */\ninterface SetupOptions {\n alert$: Subject /* Alert subject */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Extract text to copy\n *\n * @param el - HTML element\n *\n * @returns Extracted text\n */\nfunction extract(el: HTMLElement): string {\n el.setAttribute(\"data-md-copying\", \"\")\n const text = el.innerText\n el.removeAttribute(\"data-md-copying\")\n return text\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up Clipboard.js integration\n *\n * @param options - Options\n */\nexport function setupClipboardJS(\n { alert$ }: SetupOptions\n): void {\n if (ClipboardJS.isSupported()) {\n new Observable(subscriber => {\n new ClipboardJS(\"[data-clipboard-target], [data-clipboard-text]\", {\n text: el => (\n el.getAttribute(\"data-clipboard-text\")! ||\n extract(getElement(\n el.getAttribute(\"data-clipboard-target\")!\n ))\n )\n })\n .on(\"success\", ev => subscriber.next(ev))\n })\n .pipe(\n tap(ev => {\n const trigger = ev.trigger as HTMLElement\n trigger.focus()\n }),\n map(() => translation(\"clipboard.copied\"))\n )\n .subscribe(alert$)\n }\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n defaultIfEmpty,\n map,\n of,\n tap\n} from \"rxjs\"\n\nimport { configuration } from \"~/_\"\nimport { getElements, requestXML } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Sitemap, i.e. a list of URLs\n */\nexport type Sitemap = string[]\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Preprocess a list of URLs\n *\n * This function replaces the `site_url` in the sitemap with the actual base\n * URL, to allow instant loading to work in occasions like Netlify previews.\n *\n * @param urls - URLs\n *\n * @returns URL path parts\n */\nfunction preprocess(urls: Sitemap): Sitemap {\n if (urls.length < 2)\n return [\"\"]\n\n /* Take the first two URLs and remove everything after the last slash */\n const [root, next] = [...urls]\n .sort((a, b) => a.length - b.length)\n .map(url => url.replace(/[^/]+$/, \"\"))\n\n /* Compute common prefix */\n let index = 0\n if (root === next)\n index = root.length\n else\n while (root.charCodeAt(index) === next.charCodeAt(index))\n index++\n\n /* Remove common prefix and return in original order */\n return urls.map(url => url.replace(root.slice(0, index), \"\"))\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch the sitemap for the given base URL\n *\n * @param base - Base URL\n *\n * @returns Sitemap observable\n */\nexport function fetchSitemap(base?: URL): Observable {\n const cached = __md_get(\"__sitemap\", sessionStorage, base)\n if (cached) {\n return of(cached)\n } else {\n const config = configuration()\n return requestXML(new URL(\"sitemap.xml\", base || config.base))\n .pipe(\n map(sitemap => preprocess(getElements(\"loc\", sitemap)\n .map(node => node.textContent!)\n )),\n defaultIfEmpty([]),\n tap(sitemap => __md_set(\"__sitemap\", sitemap, sessionStorage, base))\n )\n }\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n NEVER,\n Observable,\n Subject,\n bufferCount,\n catchError,\n concatMap,\n debounceTime,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n filter,\n fromEvent,\n map,\n merge,\n of,\n sample,\n share,\n skip,\n skipUntil,\n switchMap\n} from \"rxjs\"\n\nimport { configuration, feature } from \"~/_\"\nimport {\n Viewport,\n ViewportOffset,\n getElements,\n getOptionalElement,\n request,\n setLocation,\n setLocationHash\n} from \"~/browser\"\nimport { getComponentElement } from \"~/components\"\nimport { h } from \"~/utilities\"\n\nimport { fetchSitemap } from \"../sitemap\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * History state\n */\nexport interface HistoryState {\n url: URL /* State URL */\n offset?: ViewportOffset /* State viewport offset */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Setup options\n */\ninterface SetupOptions {\n document$: Subject /* Document subject */\n location$: Subject /* Location subject */\n viewport$: Observable /* Viewport observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up instant loading\n *\n * When fetching, theoretically, we could use `responseType: \"document\"`, but\n * since all MkDocs links are relative, we need to make sure that the current\n * location matches the document we just loaded. Otherwise any relative links\n * in the document could use the old location.\n *\n * This is the reason why we need to synchronize history events and the process\n * of fetching the document for navigation changes (except `popstate` events):\n *\n * 1. Fetch document via `XMLHTTPRequest`\n * 2. Set new location via `history.pushState`\n * 3. Parse and emit fetched document\n *\n * For `popstate` events, we must not use `history.pushState`, or the forward\n * history will be irreversibly overwritten. In case the request fails, the\n * location change is dispatched regularly.\n *\n * @param options - Options\n */\nexport function setupInstantLoading(\n { document$, location$, viewport$ }: SetupOptions\n): void {\n const config = configuration()\n if (location.protocol === \"file:\")\n return\n\n /* Disable automatic scroll restoration */\n if (\"scrollRestoration\" in history) {\n history.scrollRestoration = \"manual\"\n\n /* Hack: ensure that reloads restore viewport offset */\n fromEvent(window, \"beforeunload\")\n .subscribe(() => {\n history.scrollRestoration = \"auto\"\n })\n }\n\n /* Hack: ensure absolute favicon link to omit 404s when switching */\n const favicon = getOptionalElement(\"link[rel=icon]\")\n if (typeof favicon !== \"undefined\")\n favicon.href = favicon.href\n\n /* Intercept internal navigation */\n const push$ = fetchSitemap()\n .pipe(\n map(paths => paths.map(path => `${new URL(path, config.base)}`)),\n switchMap(urls => fromEvent(document.body, \"click\")\n .pipe(\n filter(ev => !ev.metaKey && !ev.ctrlKey),\n switchMap(ev => {\n if (ev.target instanceof Element) {\n const el = ev.target.closest(\"a\")\n if (el && !el.target) {\n const url = new URL(el.href)\n\n /* Canonicalize URL */\n url.search = \"\"\n url.hash = \"\"\n\n /* Check if URL should be intercepted */\n if (\n url.pathname !== location.pathname &&\n urls.includes(url.toString())\n ) {\n ev.preventDefault()\n return of({\n url: new URL(el.href)\n })\n }\n }\n }\n return NEVER\n })\n )\n ),\n share()\n )\n\n /* Intercept history back and forward */\n const pop$ = fromEvent(window, \"popstate\")\n .pipe(\n filter(ev => ev.state !== null),\n map(ev => ({\n url: new URL(location.href),\n offset: ev.state\n })),\n share()\n )\n\n /* Emit location change */\n merge(push$, pop$)\n .pipe(\n distinctUntilChanged((a, b) => a.url.href === b.url.href),\n map(({ url }) => url)\n )\n .subscribe(location$)\n\n /* Fetch document via `XMLHTTPRequest` */\n const response$ = location$\n .pipe(\n distinctUntilKeyChanged(\"pathname\"),\n switchMap(url => request(url.href)\n .pipe(\n catchError(() => {\n setLocation(url)\n return NEVER\n })\n )\n ),\n share()\n )\n\n /* Set new location via `history.pushState` */\n push$\n .pipe(\n sample(response$)\n )\n .subscribe(({ url }) => {\n history.pushState({}, \"\", `${url}`)\n })\n\n /* Parse and emit fetched document */\n const dom = new DOMParser()\n response$\n .pipe(\n switchMap(res => res.text()),\n map(res => dom.parseFromString(res, \"text/html\"))\n )\n .subscribe(document$)\n\n /* Replace meta tags and components */\n document$\n .pipe(\n skip(1)\n )\n .subscribe(replacement => {\n for (const selector of [\n\n /* Meta tags */\n \"title\",\n \"link[rel=canonical]\",\n \"meta[name=author]\",\n \"meta[name=description]\",\n\n /* Components */\n \"[data-md-component=announce]\",\n \"[data-md-component=container]\",\n \"[data-md-component=header-topic]\",\n \"[data-md-component=outdated]\",\n \"[data-md-component=logo]\",\n \"[data-md-component=skip]\",\n ...feature(\"navigation.tabs.sticky\")\n ? [\"[data-md-component=tabs]\"]\n : []\n ]) {\n const source = getOptionalElement(selector)\n const target = getOptionalElement(selector, replacement)\n if (\n typeof source !== \"undefined\" &&\n typeof target !== \"undefined\"\n ) {\n source.replaceWith(target)\n }\n }\n })\n\n /* Re-evaluate scripts */\n document$\n .pipe(\n skip(1),\n map(() => getComponentElement(\"container\")),\n switchMap(el => getElements(\"script\", el)),\n concatMap(el => {\n const script = h(\"script\")\n if (el.src) {\n for (const name of el.getAttributeNames())\n script.setAttribute(name, el.getAttribute(name)!)\n el.replaceWith(script)\n\n /* Complete when script is loaded */\n return new Observable(observer => {\n script.onload = () => observer.complete()\n })\n\n /* Complete immediately */\n } else {\n script.textContent = el.textContent\n el.replaceWith(script)\n return EMPTY\n }\n })\n )\n .subscribe()\n\n /* Emit history state change */\n merge(push$, pop$)\n .pipe(\n sample(document$)\n )\n .subscribe(({ url, offset }) => {\n if (url.hash && !offset) {\n setLocationHash(url.hash)\n } else {\n window.scrollTo(0, offset?.y || 0)\n }\n })\n\n /* Debounce update of viewport offset */\n viewport$\n .pipe(\n skipUntil(push$),\n debounceTime(250),\n distinctUntilKeyChanged(\"offset\")\n )\n .subscribe(({ offset }) => {\n history.replaceState(offset, \"\")\n })\n\n /* Set viewport offset from history */\n merge(push$, pop$)\n .pipe(\n bufferCount(2, 1),\n filter(([a, b]) => a.url.pathname === b.url.pathname),\n map(([, state]) => state)\n )\n .subscribe(({ offset }) => {\n window.scrollTo(0, offset?.y || 0)\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport escapeHTML from \"escape-html\"\n\nimport { SearchIndexDocument } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search document\n */\nexport interface SearchDocument extends SearchIndexDocument {\n parent?: SearchIndexDocument /* Parent article */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Search document mapping\n */\nexport type SearchDocumentMap = Map\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create a search document mapping\n *\n * @param docs - Search index documents\n *\n * @returns Search document map\n */\nexport function setupSearchDocumentMap(\n docs: SearchIndexDocument[]\n): SearchDocumentMap {\n const documents = new Map()\n const parents = new Set()\n for (const doc of docs) {\n const [path, hash] = doc.location.split(\"#\")\n\n /* Extract location, title and tags */\n const location = doc.location\n const title = doc.title\n const tags = doc.tags\n\n /* Escape and cleanup text */\n const text = escapeHTML(doc.text)\n .replace(/\\s+(?=[,.:;!?])/g, \"\")\n .replace(/\\s+/g, \" \")\n\n /* Handle section */\n if (hash) {\n const parent = documents.get(path)!\n\n /* Ignore first section, override article */\n if (!parents.has(parent)) {\n parent.title = doc.title\n parent.text = text\n\n /* Remember that we processed the article */\n parents.add(parent)\n\n /* Add subsequent section */\n } else {\n documents.set(location, {\n location,\n title,\n text,\n parent\n })\n }\n\n /* Add article */\n } else {\n documents.set(location, {\n location,\n title,\n text,\n ...tags && { tags }\n })\n }\n }\n return documents\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport escapeHTML from \"escape-html\"\n\nimport { SearchIndexConfig } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search highlight function\n *\n * @param value - Value\n *\n * @returns Highlighted value\n */\nexport type SearchHighlightFn = (value: string) => string\n\n/**\n * Search highlight factory function\n *\n * @param query - Query value\n *\n * @returns Search highlight function\n */\nexport type SearchHighlightFactoryFn = (query: string) => SearchHighlightFn\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create a search highlighter\n *\n * @param config - Search index configuration\n * @param escape - Whether to escape HTML\n *\n * @returns Search highlight factory function\n */\nexport function setupSearchHighlighter(\n config: SearchIndexConfig, escape: boolean\n): SearchHighlightFactoryFn {\n const separator = new RegExp(config.separator, \"img\")\n const highlight = (_: unknown, data: string, term: string) => {\n return `${data}${term}`\n }\n\n /* Return factory function */\n return (query: string) => {\n query = query\n .replace(/[\\s*+\\-:~^]+/g, \" \")\n .trim()\n\n /* Create search term match expression */\n const match = new RegExp(`(^|${config.separator})(${\n query\n .replace(/[|\\\\{}()[\\]^$+*?.-]/g, \"\\\\$&\")\n .replace(separator, \"|\")\n })`, \"img\")\n\n /* Highlight string value */\n return value => (\n escape\n ? escapeHTML(value)\n : value\n )\n .replace(match, highlight)\n .replace(/<\\/mark>(\\s+)]*>/img, \"$1\")\n }\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search transformation function\n *\n * @param value - Query value\n *\n * @returns Transformed query value\n */\nexport type SearchTransformFn = (value: string) => string\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Default transformation function\n *\n * 1. Search for terms in quotation marks and prepend a `+` modifier to denote\n * that the resulting document must contain all terms, converting the query\n * to an `AND` query (as opposed to the default `OR` behavior). While users\n * may expect terms enclosed in quotation marks to map to span queries, i.e.\n * for which order is important, Lunr.js doesn't support them, so the best\n * we can do is to convert the terms to an `AND` query.\n *\n * 2. Replace control characters which are not located at the beginning of the\n * query or preceded by white space, or are not followed by a non-whitespace\n * character or are at the end of the query string. Furthermore, filter\n * unmatched quotation marks.\n *\n * 3. Trim excess whitespace from left and right.\n *\n * @param query - Query value\n *\n * @returns Transformed query value\n */\nexport function defaultTransform(query: string): string {\n return query\n .split(/\"([^\"]+)\"/g) /* => 1 */\n .map((terms, index) => index & 1\n ? terms.replace(/^\\b|^(?![^\\x00-\\x7F]|$)|\\s+/g, \" +\")\n : terms\n )\n .join(\"\")\n .replace(/\"|(?:^|\\s+)[*+\\-:^~]+(?=\\s+|$)/g, \"\") /* => 2 */\n .trim() /* => 3 */\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A RTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { SearchIndex, SearchResult } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search message type\n */\nexport const enum SearchMessageType {\n SETUP, /* Search index setup */\n READY, /* Search index ready */\n QUERY, /* Search query */\n RESULT /* Search results */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Message containing the data necessary to setup the search index\n */\nexport interface SearchSetupMessage {\n type: SearchMessageType.SETUP /* Message type */\n data: SearchIndex /* Message data */\n}\n\n/**\n * Message indicating the search index is ready\n */\nexport interface SearchReadyMessage {\n type: SearchMessageType.READY /* Message type */\n}\n\n/**\n * Message containing a search query\n */\nexport interface SearchQueryMessage {\n type: SearchMessageType.QUERY /* Message type */\n data: string /* Message data */\n}\n\n/**\n * Message containing results for a search query\n */\nexport interface SearchResultMessage {\n type: SearchMessageType.RESULT /* Message type */\n data: SearchResult /* Message data */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Message exchanged with the search worker\n */\nexport type SearchMessage =\n | SearchSetupMessage\n | SearchReadyMessage\n | SearchQueryMessage\n | SearchResultMessage\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Type guard for search setup messages\n *\n * @param message - Search worker message\n *\n * @returns Test result\n */\nexport function isSearchSetupMessage(\n message: SearchMessage\n): message is SearchSetupMessage {\n return message.type === SearchMessageType.SETUP\n}\n\n/**\n * Type guard for search ready messages\n *\n * @param message - Search worker message\n *\n * @returns Test result\n */\nexport function isSearchReadyMessage(\n message: SearchMessage\n): message is SearchReadyMessage {\n return message.type === SearchMessageType.READY\n}\n\n/**\n * Type guard for search query messages\n *\n * @param message - Search worker message\n *\n * @returns Test result\n */\nexport function isSearchQueryMessage(\n message: SearchMessage\n): message is SearchQueryMessage {\n return message.type === SearchMessageType.QUERY\n}\n\n/**\n * Type guard for search result messages\n *\n * @param message - Search worker message\n *\n * @returns Test result\n */\nexport function isSearchResultMessage(\n message: SearchMessage\n): message is SearchResultMessage {\n return message.type === SearchMessageType.RESULT\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A RTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n ObservableInput,\n Subject,\n from,\n map,\n share\n} from \"rxjs\"\n\nimport { configuration, feature, translation } from \"~/_\"\nimport { WorkerHandler, watchWorker } from \"~/browser\"\n\nimport { SearchIndex } from \"../../_\"\nimport {\n SearchOptions,\n SearchPipeline\n} from \"../../options\"\nimport {\n SearchMessage,\n SearchMessageType,\n SearchSetupMessage,\n isSearchResultMessage\n} from \"../message\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search worker\n */\nexport type SearchWorker = WorkerHandler\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up search index\n *\n * @param data - Search index\n *\n * @returns Search index\n */\nfunction setupSearchIndex({ config, docs }: SearchIndex): SearchIndex {\n\n /* Override default language with value from translation */\n if (config.lang.length === 1 && config.lang[0] === \"en\")\n config.lang = [\n translation(\"search.config.lang\")\n ]\n\n /* Override default separator with value from translation */\n if (config.separator === \"[\\\\s\\\\-]+\")\n config.separator = translation(\"search.config.separator\")\n\n /* Set pipeline from translation */\n const pipeline = translation(\"search.config.pipeline\")\n .split(/\\s*,\\s*/)\n .filter(Boolean) as SearchPipeline\n\n /* Determine search options */\n const options: SearchOptions = {\n pipeline,\n suggestions: feature(\"search.suggest\")\n }\n\n /* Return search index after defaulting */\n return { config, docs, options }\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up search worker\n *\n * This function creates a web worker to set up and query the search index,\n * which is done using Lunr.js. The index must be passed as an observable to\n * enable hacks like _localsearch_ via search index embedding as JSON.\n *\n * @param url - Worker URL\n * @param index - Search index observable input\n *\n * @returns Search worker\n */\nexport function setupSearchWorker(\n url: string, index: ObservableInput\n): SearchWorker {\n const config = configuration()\n const worker = new Worker(url)\n\n /* Create communication channels and resolve relative links */\n const tx$ = new Subject()\n const rx$ = watchWorker(worker, { tx$ })\n .pipe(\n map(message => {\n if (isSearchResultMessage(message)) {\n for (const result of message.data.items)\n for (const document of result)\n document.location = `${new URL(document.location, config.base)}`\n }\n return message\n }),\n share()\n )\n\n /* Set up search index */\n from(index)\n .pipe(\n map(data => ({\n type: SearchMessageType.SETUP,\n data: setupSearchIndex(data)\n } as SearchSetupMessage))\n )\n .subscribe(tx$.next.bind(tx$))\n\n /* Return search worker */\n return { tx$, rx$ }\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Subject,\n combineLatest,\n filter,\n fromEvent,\n map,\n of,\n switchMap\n} from \"rxjs\"\n\nimport { configuration } from \"~/_\"\nimport {\n getElement,\n getLocation,\n requestJSON,\n setLocation\n} from \"~/browser\"\nimport { getComponentElements } from \"~/components\"\nimport {\n Version,\n renderVersionSelector\n} from \"~/templates\"\n\nimport { fetchSitemap } from \"../sitemap\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Setup options\n */\ninterface SetupOptions {\n document$: Subject /* Document subject */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Set up version selector\n *\n * @param options - Options\n */\nexport function setupVersionSelector(\n { document$ }: SetupOptions\n): void {\n const config = configuration()\n const versions$ = requestJSON(\n new URL(\"../versions.json\", config.base)\n )\n\n /* Determine current version */\n const current$ = versions$\n .pipe(\n map(versions => {\n const [, current] = config.base.match(/([^/]+)\\/?$/)!\n return versions.find(({ version, aliases }) => (\n version === current || aliases.includes(current)\n )) || versions[0]\n })\n )\n\n /* Intercept inter-version navigation */\n combineLatest([versions$, current$])\n .pipe(\n map(([versions, current]) => new Map(versions\n .filter(version => version !== current)\n .map(version => [\n `${new URL(`../${version.version}/`, config.base)}`,\n version\n ])\n )),\n switchMap(urls => fromEvent(document.body, \"click\")\n .pipe(\n filter(ev => !ev.metaKey && !ev.ctrlKey),\n switchMap(ev => {\n if (ev.target instanceof Element) {\n const el = ev.target.closest(\"a\")\n if (el && !el.target && urls.has(el.href)) {\n ev.preventDefault()\n return of(el.href)\n }\n }\n return EMPTY\n }),\n switchMap(url => {\n const { version } = urls.get(url)!\n return fetchSitemap(new URL(url))\n .pipe(\n map(sitemap => {\n const location = getLocation()\n const path = location.href.replace(config.base, \"\")\n return sitemap.includes(path)\n ? new URL(`../${version}/${path}`, config.base)\n : new URL(url)\n })\n )\n })\n )\n )\n )\n .subscribe(url => setLocation(url))\n\n /* Render version selector and warning */\n combineLatest([versions$, current$])\n .subscribe(([versions, current]) => {\n const topic = getElement(\".md-header__topic\")\n topic.appendChild(renderVersionSelector(versions, current))\n })\n\n /* Integrate outdated version banner with instant loading */\n document$.pipe(switchMap(() => current$))\n .subscribe(current => {\n\n /* Check if version state was already determined */\n let outdated = __md_get(\"__outdated\", sessionStorage)\n if (outdated === null) {\n const latest = config.version?.default || \"latest\"\n outdated = !current.aliases.includes(latest)\n\n /* Persist version state in session storage */\n __md_set(\"__outdated\", outdated, sessionStorage)\n }\n\n /* Unhide outdated version banner */\n if (outdated)\n for (const warning of getComponentElements(\"outdated\"))\n warning.hidden = false\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n combineLatest,\n delay,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n filter,\n finalize,\n fromEvent,\n map,\n merge,\n shareReplay,\n startWith,\n take,\n takeLast,\n takeUntil,\n tap\n} from \"rxjs\"\n\nimport { translation } from \"~/_\"\nimport {\n getLocation,\n setToggle,\n watchElementFocus,\n watchToggle\n} from \"~/browser\"\nimport {\n SearchMessageType,\n SearchQueryMessage,\n SearchWorker,\n defaultTransform,\n isSearchReadyMessage\n} from \"~/integrations\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search query\n */\nexport interface SearchQuery {\n value: string /* Query value */\n focus: boolean /* Query focus */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch search query\n *\n * Note that the focus event which triggers re-reading the current query value\n * is delayed by `1ms` so the input's empty state is allowed to propagate.\n *\n * @param el - Search query element\n * @param worker - Search worker\n *\n * @returns Search query observable\n */\nexport function watchSearchQuery(\n el: HTMLInputElement, { rx$ }: SearchWorker\n): Observable {\n const fn = __search?.transform || defaultTransform\n\n /* Immediately show search dialog */\n const { searchParams } = getLocation()\n if (searchParams.has(\"q\"))\n setToggle(\"search\", true)\n\n /* Intercept query parameter (deep link) */\n const param$ = rx$\n .pipe(\n filter(isSearchReadyMessage),\n take(1),\n map(() => searchParams.get(\"q\") || \"\")\n )\n\n /* Remove query parameter when search is closed */\n watchToggle(\"search\")\n .pipe(\n filter(active => !active),\n take(1)\n )\n .subscribe(() => {\n const url = new URL(location.href)\n url.searchParams.delete(\"q\")\n history.replaceState({}, \"\", `${url}`)\n })\n\n /* Set query from parameter */\n param$.subscribe(value => { // TODO: not ideal - find a better way\n if (value) {\n el.value = value\n el.focus()\n }\n })\n\n /* Intercept focus and input events */\n const focus$ = watchElementFocus(el)\n const value$ = merge(\n fromEvent(el, \"keyup\"),\n fromEvent(el, \"focus\").pipe(delay(1)),\n param$\n )\n .pipe(\n map(() => fn(el.value)),\n startWith(\"\"),\n distinctUntilChanged(),\n )\n\n /* Combine into single observable */\n return combineLatest([value$, focus$])\n .pipe(\n map(([value, focus]) => ({ value, focus })),\n shareReplay(1)\n )\n}\n\n/**\n * Mount search query\n *\n * @param el - Search query element\n * @param worker - Search worker\n *\n * @returns Search query component observable\n */\nexport function mountSearchQuery(\n el: HTMLInputElement, { tx$, rx$ }: SearchWorker\n): Observable> {\n const push$ = new Subject()\n\n /* Handle value changes */\n push$\n .pipe(\n distinctUntilKeyChanged(\"value\"),\n map(({ value }): SearchQueryMessage => ({\n type: SearchMessageType.QUERY,\n data: value\n }))\n )\n .subscribe(tx$.next.bind(tx$))\n\n /* Handle focus changes */\n push$\n .pipe(\n distinctUntilKeyChanged(\"focus\")\n )\n .subscribe(({ focus }) => {\n if (focus) {\n setToggle(\"search\", focus)\n el.placeholder = \"\"\n } else {\n el.placeholder = translation(\"search.placeholder\")\n }\n })\n\n /* Handle reset */\n fromEvent(el.form!, \"reset\")\n .pipe(\n takeUntil(push$.pipe(takeLast(1)))\n )\n .subscribe(() => el.focus())\n\n /* Create and return component */\n return watchSearchQuery(el, { tx$, rx$ })\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n bufferCount,\n filter,\n finalize,\n map,\n merge,\n of,\n skipUntil,\n switchMap,\n take,\n tap,\n withLatestFrom,\n zipWith\n} from \"rxjs\"\n\nimport { translation } from \"~/_\"\nimport {\n getElement,\n watchElementBoundary\n} from \"~/browser\"\nimport {\n SearchResult,\n SearchWorker,\n isSearchReadyMessage,\n isSearchResultMessage\n} from \"~/integrations\"\nimport { renderSearchResultItem } from \"~/templates\"\nimport { round } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\nimport { SearchQuery } from \"../query\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n query$: Observable /* Search query observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search result list\n *\n * This function performs a lazy rendering of the search results, depending on\n * the vertical offset of the search result container.\n *\n * @param el - Search result list element\n * @param worker - Search worker\n * @param options - Options\n *\n * @returns Search result list component observable\n */\nexport function mountSearchResult(\n el: HTMLElement, { rx$ }: SearchWorker, { query$ }: MountOptions\n): Observable> {\n const push$ = new Subject()\n const boundary$ = watchElementBoundary(el.parentElement!)\n .pipe(\n filter(Boolean)\n )\n\n /* Retrieve nested components */\n const meta = getElement(\":scope > :first-child\", el)\n const list = getElement(\":scope > :last-child\", el)\n\n /* Wait until search is ready */\n const ready$ = rx$\n .pipe(\n filter(isSearchReadyMessage),\n take(1)\n )\n\n /* Update search result metadata */\n push$\n .pipe(\n withLatestFrom(query$),\n skipUntil(ready$)\n )\n .subscribe(([{ items }, { value }]) => {\n if (value) {\n switch (items.length) {\n\n /* No results */\n case 0:\n meta.textContent = translation(\"search.result.none\")\n break\n\n /* One result */\n case 1:\n meta.textContent = translation(\"search.result.one\")\n break\n\n /* Multiple result */\n default:\n meta.textContent = translation(\n \"search.result.other\",\n round(items.length)\n )\n }\n } else {\n meta.textContent = translation(\"search.result.placeholder\")\n }\n })\n\n /* Update search result list */\n push$\n .pipe(\n tap(() => list.innerHTML = \"\"),\n switchMap(({ items }) => merge(\n of(...items.slice(0, 10)),\n of(...items.slice(10))\n .pipe(\n bufferCount(4),\n zipWith(boundary$),\n switchMap(([chunk]) => chunk)\n )\n ))\n )\n .subscribe(result => list.appendChild(\n renderSearchResultItem(result)\n ))\n\n /* Filter search result message */\n const result$ = rx$\n .pipe(\n filter(isSearchResultMessage),\n map(({ data }) => data)\n )\n\n /* Create and return component */\n return result$\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n finalize,\n fromEvent,\n map,\n tap\n} from \"rxjs\"\n\nimport { getLocation } from \"~/browser\"\n\nimport { Component } from \"../../_\"\nimport { SearchQuery } from \"../query\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search sharing\n */\nexport interface SearchShare {\n url: URL /* Deep link for sharing */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n query$: Observable /* Search query observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n query$: Observable /* Search query observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search sharing\n *\n * @param _el - Search sharing element\n * @param options - Options\n *\n * @returns Search sharing observable\n */\nexport function watchSearchShare(\n _el: HTMLElement, { query$ }: WatchOptions\n): Observable {\n return query$\n .pipe(\n map(({ value }) => {\n const url = getLocation()\n url.hash = \"\"\n url.searchParams.delete(\"h\")\n url.searchParams.set(\"q\", value)\n return { url }\n })\n )\n}\n\n/**\n * Mount search sharing\n *\n * @param el - Search sharing element\n * @param options - Options\n *\n * @returns Search sharing component observable\n */\nexport function mountSearchShare(\n el: HTMLAnchorElement, options: MountOptions\n): Observable> {\n const push$ = new Subject()\n push$.subscribe(({ url }) => {\n el.setAttribute(\"data-clipboard-text\", el.href)\n el.href = `${url}`\n })\n\n /* Prevent following of link */\n fromEvent(el, \"click\")\n .subscribe(ev => ev.preventDefault())\n\n /* Create and return component */\n return watchSearchShare(el, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n asyncScheduler,\n combineLatestWith,\n distinctUntilChanged,\n filter,\n finalize,\n fromEvent,\n map,\n merge,\n observeOn,\n tap\n} from \"rxjs\"\n\nimport { Keyboard } from \"~/browser\"\nimport {\n SearchResult,\n SearchWorker,\n isSearchResultMessage\n} from \"~/integrations\"\n\nimport { Component, getComponentElement } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search suggestions\n */\nexport interface SearchSuggest {}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n keyboard$: Observable /* Keyboard observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search suggestions\n *\n * This function will perform a lazy rendering of the search results, depending\n * on the vertical offset of the search result container.\n *\n * @param el - Search result list element\n * @param worker - Search worker\n * @param options - Options\n *\n * @returns Search result list component observable\n */\nexport function mountSearchSuggest(\n el: HTMLElement, { rx$ }: SearchWorker, { keyboard$ }: MountOptions\n): Observable> {\n const push$ = new Subject()\n\n /* Retrieve query component and track all changes */\n const query = getComponentElement(\"search-query\")\n const query$ = merge(\n fromEvent(query, \"keydown\"),\n fromEvent(query, \"focus\")\n )\n .pipe(\n observeOn(asyncScheduler),\n map(() => query.value),\n distinctUntilChanged(),\n )\n\n /* Update search suggestions */\n push$\n .pipe(\n combineLatestWith(query$),\n map(([{ suggestions }, value]) => {\n const words = value.split(/([\\s-]+)/)\n if (suggestions?.length && words[words.length - 1]) {\n const last = suggestions[suggestions.length - 1]\n if (last.startsWith(words[words.length - 1]))\n words[words.length - 1] = last\n } else {\n words.length = 0\n }\n return words\n })\n )\n .subscribe(words => el.innerHTML = words\n .join(\"\")\n .replace(/\\s/g, \" \")\n )\n\n /* Set up search keyboard handlers */\n keyboard$\n .pipe(\n filter(({ mode }) => mode === \"search\")\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Right arrow: accept current suggestion */\n case \"ArrowRight\":\n if (\n el.innerText.length &&\n query.selectionStart === query.value.length\n )\n query.value = el.innerText\n break\n }\n })\n\n /* Filter search result message */\n const result$ = rx$\n .pipe(\n filter(isSearchResultMessage),\n map(({ data }) => data)\n )\n\n /* Create and return component */\n return result$\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(() => ({ ref: el }))\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n NEVER,\n Observable,\n ObservableInput,\n filter,\n merge,\n mergeWith,\n sample,\n take\n} from \"rxjs\"\n\nimport { configuration } from \"~/_\"\nimport {\n Keyboard,\n getActiveElement,\n getElements,\n setToggle\n} from \"~/browser\"\nimport {\n SearchIndex,\n SearchResult,\n isSearchQueryMessage,\n isSearchReadyMessage,\n setupSearchWorker\n} from \"~/integrations\"\n\nimport {\n Component,\n getComponentElement,\n getComponentElements\n} from \"../../_\"\nimport {\n SearchQuery,\n mountSearchQuery\n} from \"../query\"\nimport { mountSearchResult } from \"../result\"\nimport {\n SearchShare,\n mountSearchShare\n} from \"../share\"\nimport {\n SearchSuggest,\n mountSearchSuggest\n} from \"../suggest\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search\n */\nexport type Search =\n | SearchQuery\n | SearchResult\n | SearchShare\n | SearchSuggest\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n index$: ObservableInput /* Search index observable */\n keyboard$: Observable /* Keyboard observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search\n *\n * This function sets up the search functionality, including the underlying\n * web worker and all keyboard bindings.\n *\n * @param el - Search element\n * @param options - Options\n *\n * @returns Search component observable\n */\nexport function mountSearch(\n el: HTMLElement, { index$, keyboard$ }: MountOptions\n): Observable> {\n const config = configuration()\n try {\n const url = __search?.worker || config.search\n const worker = setupSearchWorker(url, index$)\n\n /* Retrieve query and result components */\n const query = getComponentElement(\"search-query\", el)\n const result = getComponentElement(\"search-result\", el)\n\n /* Re-emit query when search is ready */\n const { tx$, rx$ } = worker\n tx$\n .pipe(\n filter(isSearchQueryMessage),\n sample(rx$.pipe(filter(isSearchReadyMessage))),\n take(1)\n )\n .subscribe(tx$.next.bind(tx$))\n\n /* Set up search keyboard handlers */\n keyboard$\n .pipe(\n filter(({ mode }) => mode === \"search\")\n )\n .subscribe(key => {\n const active = getActiveElement()\n switch (key.type) {\n\n /* Enter: go to first (best) result */\n case \"Enter\":\n if (active === query) {\n const anchors = new Map()\n for (const anchor of getElements(\n \":first-child [href]\", result\n )) {\n const article = anchor.firstElementChild!\n anchors.set(anchor, parseFloat(\n article.getAttribute(\"data-md-score\")!\n ))\n }\n\n /* Go to result with highest score, if any */\n if (anchors.size) {\n const [[best]] = [...anchors].sort(([, a], [, b]) => b - a)\n best.click()\n }\n\n /* Otherwise omit form submission */\n key.claim()\n }\n break\n\n /* Escape or Tab: close search */\n case \"Escape\":\n case \"Tab\":\n setToggle(\"search\", false)\n query.blur()\n break\n\n /* Vertical arrows: select previous or next search result */\n case \"ArrowUp\":\n case \"ArrowDown\":\n if (typeof active === \"undefined\") {\n query.focus()\n } else {\n const els = [query, ...getElements(\n \":not(details) > [href], summary, details[open] [href]\",\n result\n )]\n const i = Math.max(0, (\n Math.max(0, els.indexOf(active)) + els.length + (\n key.type === \"ArrowUp\" ? -1 : +1\n )\n ) % els.length)\n els[i].focus()\n }\n\n /* Prevent scrolling of page */\n key.claim()\n break\n\n /* All other keys: hand to search query */\n default:\n if (query !== getActiveElement())\n query.focus()\n }\n })\n\n /* Set up global keyboard handlers */\n keyboard$\n .pipe(\n filter(({ mode }) => mode === \"global\"),\n )\n .subscribe(key => {\n switch (key.type) {\n\n /* Open search and select query */\n case \"f\":\n case \"s\":\n case \"/\":\n query.focus()\n query.select()\n\n /* Prevent scrolling of page */\n key.claim()\n break\n }\n })\n\n /* Create and return component */\n const query$ = mountSearchQuery(query, worker)\n const result$ = mountSearchResult(result, worker, { query$ })\n return merge(query$, result$)\n .pipe(\n mergeWith(\n\n /* Search sharing */\n ...getComponentElements(\"search-share\", el)\n .map(child => mountSearchShare(child, { query$ })),\n\n /* Search suggestions */\n ...getComponentElements(\"search-suggest\", el)\n .map(child => mountSearchSuggest(child, worker, { keyboard$ }))\n )\n )\n\n /* Gracefully handle broken search */\n } catch (err) {\n el.hidden = true\n return NEVER\n }\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n ObservableInput,\n combineLatest,\n filter,\n map,\n startWith\n} from \"rxjs\"\n\nimport { getLocation } from \"~/browser\"\nimport {\n SearchIndex,\n setupSearchHighlighter\n} from \"~/integrations\"\nimport { h } from \"~/utilities\"\n\nimport { Component } from \"../../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search highlighting\n */\nexport interface SearchHighlight {\n nodes: Map /* Map of replacements */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount options\n */\ninterface MountOptions {\n index$: ObservableInput /* Search index observable */\n location$: Observable /* Location observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Mount search highlighting\n *\n * @param el - Content element\n * @param options - Options\n *\n * @returns Search highlighting component observable\n */\nexport function mountSearchHiglight(\n el: HTMLElement, { index$, location$ }: MountOptions\n): Observable> {\n return combineLatest([\n index$,\n location$\n .pipe(\n startWith(getLocation()),\n filter(url => !!url.searchParams.get(\"h\"))\n )\n ])\n .pipe(\n map(([index, url]) => setupSearchHighlighter(index.config, true)(\n url.searchParams.get(\"h\")!\n )),\n map(fn => {\n const nodes = new Map()\n\n /* Traverse text nodes and collect matches */\n const it = document.createNodeIterator(el, NodeFilter.SHOW_TEXT)\n for (let node = it.nextNode(); node; node = it.nextNode()) {\n if (node.parentElement?.offsetHeight) {\n const original = node.textContent!\n const replaced = fn(original)\n if (replaced.length > original.length)\n nodes.set(node as ChildNode, replaced)\n }\n }\n\n /* Replace original nodes with matches */\n for (const [node, text] of nodes) {\n const { childNodes } = h(\"span\", null, text)\n node.replaceWith(...Array.from(childNodes))\n }\n\n /* Return component */\n return { ref: el, nodes }\n })\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n animationFrameScheduler,\n auditTime,\n combineLatest,\n defer,\n distinctUntilChanged,\n finalize,\n map,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport {\n Viewport,\n getElement,\n getElementOffset\n} from \"~/browser\"\n\nimport { Component } from \"../_\"\nimport { Header } from \"../header\"\nimport { Main } from \"../main\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Sidebar\n */\nexport interface Sidebar {\n height: number /* Sidebar height */\n locked: boolean /* Sidebar is locked */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable /* Viewport observable */\n main$: Observable
    /* Main area observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable /* Viewport observable */\n header$: Observable
    /* Header observable */\n main$: Observable
    /* Main area observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch sidebar\n *\n * This function returns an observable that computes the visual parameters of\n * the sidebar which depends on the vertical viewport offset, as well as the\n * height of the main area. When the page is scrolled beyond the header, the\n * sidebar is locked and fills the remaining space.\n *\n * @param el - Sidebar element\n * @param options - Options\n *\n * @returns Sidebar observable\n */\nexport function watchSidebar(\n el: HTMLElement, { viewport$, main$ }: WatchOptions\n): Observable {\n const parent = el.parentElement!\n const adjust =\n parent.offsetTop -\n parent.parentElement!.offsetTop\n\n /* Compute the sidebar's available height and if it should be locked */\n return combineLatest([main$, viewport$])\n .pipe(\n map(([{ offset, height }, { offset: { y } }]) => {\n height = height\n + Math.min(adjust, Math.max(0, y - offset))\n - adjust\n return {\n height,\n locked: y >= offset + adjust\n }\n }),\n distinctUntilChanged((a, b) => (\n a.height === b.height &&\n a.locked === b.locked\n ))\n )\n}\n\n/**\n * Mount sidebar\n *\n * This function doesn't set the height of the actual sidebar, but of its first\n * child \u2013 the `.md-sidebar__scrollwrap` element in order to mitigiate jittery\n * sidebars when the footer is scrolled into view. At some point we switched\n * from `absolute` / `fixed` positioning to `sticky` positioning, significantly\n * reducing jitter in some browsers (respectively Firefox and Safari) when\n * scrolling from the top. However, top-aligned sticky positioning means that\n * the sidebar snaps to the bottom when the end of the container is reached.\n * This is what leads to the mentioned jitter, as the sidebar's height may be\n * updated too slowly.\n *\n * This behaviour can be mitigiated by setting the height of the sidebar to `0`\n * while preserving the padding, and the height on its first element.\n *\n * @param el - Sidebar element\n * @param options - Options\n *\n * @returns Sidebar component observable\n */\nexport function mountSidebar(\n el: HTMLElement, { header$, ...options }: MountOptions\n): Observable> {\n const inner = getElement(\".md-sidebar__scrollwrap\", el)\n const { y } = getElementOffset(inner)\n return defer(() => {\n const push$ = new Subject()\n push$\n .pipe(\n auditTime(0, animationFrameScheduler),\n withLatestFrom(header$)\n )\n .subscribe({\n\n /* Handle emission */\n next([{ height }, { height: offset }]) {\n inner.style.height = `${height - 2 * y}px`\n el.style.top = `${offset}px`\n },\n\n /* Handle complete */\n complete() {\n inner.style.height = \"\"\n el.style.top = \"\"\n }\n })\n\n /* Create and return component */\n return watchSidebar(el, options)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { Repo, User } from \"github-types\"\nimport {\n Observable,\n defaultIfEmpty,\n map,\n zip\n} from \"rxjs\"\n\nimport { requestJSON } from \"~/browser\"\n\nimport { SourceFacts } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * GitHub release (partial)\n */\ninterface Release {\n tag_name: string /* Tag name */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch GitHub repository facts\n *\n * @param user - GitHub user or organization\n * @param repo - GitHub repository\n *\n * @returns Repository facts observable\n */\nexport function fetchSourceFactsFromGitHub(\n user: string, repo?: string\n): Observable {\n if (typeof repo !== \"undefined\") {\n const url = `https://api.github.com/repos/${user}/${repo}`\n return zip(\n\n /* Fetch version */\n requestJSON(`${url}/releases/latest`)\n .pipe(\n map(release => ({\n version: release.tag_name\n })),\n defaultIfEmpty({})\n ),\n\n /* Fetch stars and forks */\n requestJSON(url)\n .pipe(\n map(info => ({\n stars: info.stargazers_count,\n forks: info.forks_count\n })),\n defaultIfEmpty({})\n )\n )\n .pipe(\n map(([release, info]) => ({ ...release, ...info }))\n )\n\n /* User or organization */\n } else {\n const url = `https://api.github.com/users/${user}`\n return requestJSON(url)\n .pipe(\n map(info => ({\n repositories: info.public_repos\n })),\n defaultIfEmpty({})\n )\n }\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { ProjectSchema } from \"gitlab\"\nimport {\n Observable,\n defaultIfEmpty,\n map\n} from \"rxjs\"\n\nimport { requestJSON } from \"~/browser\"\n\nimport { SourceFacts } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch GitLab repository facts\n *\n * @param base - GitLab base\n * @param project - GitLab project\n *\n * @returns Repository facts observable\n */\nexport function fetchSourceFactsFromGitLab(\n base: string, project: string\n): Observable {\n const url = `https://${base}/api/v4/projects/${encodeURIComponent(project)}`\n return requestJSON(url)\n .pipe(\n map(({ star_count, forks_count }) => ({\n stars: star_count,\n forks: forks_count\n })),\n defaultIfEmpty({})\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport { EMPTY, Observable } from \"rxjs\"\n\nimport { fetchSourceFactsFromGitHub } from \"../github\"\nimport { fetchSourceFactsFromGitLab } from \"../gitlab\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Repository facts for repositories\n */\nexport interface RepositoryFacts {\n stars?: number /* Number of stars */\n forks?: number /* Number of forks */\n version?: string /* Latest version */\n}\n\n/**\n * Repository facts for organizations\n */\nexport interface OrganizationFacts {\n repositories?: number /* Number of repositories */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Repository facts\n */\nexport type SourceFacts =\n | RepositoryFacts\n | OrganizationFacts\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch repository facts\n *\n * @param url - Repository URL\n *\n * @returns Repository facts observable\n */\nexport function fetchSourceFacts(\n url: string\n): Observable {\n const [type] = url.match(/(git(?:hub|lab))/i) || []\n switch (type.toLowerCase()) {\n\n /* GitHub repository */\n case \"github\":\n const [, user, repo] = url.match(/^.+github\\.com\\/([^/]+)\\/?([^/]+)?/i)!\n return fetchSourceFactsFromGitHub(user, repo)\n\n /* GitLab repository */\n case \"gitlab\":\n const [, base, slug] = url.match(/^.+?([^/]*gitlab[^/]+)\\/(.+?)\\/?$/i)!\n return fetchSourceFactsFromGitLab(base, slug)\n\n /* Everything else */\n default:\n return EMPTY\n }\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n EMPTY,\n Observable,\n Subject,\n catchError,\n defer,\n filter,\n finalize,\n map,\n of,\n shareReplay,\n tap\n} from \"rxjs\"\n\nimport { getElement } from \"~/browser\"\nimport { renderSourceFacts } from \"~/templates\"\n\nimport { Component } from \"../../_\"\nimport {\n SourceFacts,\n fetchSourceFacts\n} from \"../facts\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Repository information\n */\nexport interface Source {\n facts: SourceFacts /* Repository facts */\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Repository information observable\n */\nlet fetch$: Observable\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch repository information\n *\n * This function tries to read the repository facts from session storage, and\n * if unsuccessful, fetches them from the underlying provider.\n *\n * @param el - Repository information element\n *\n * @returns Repository information observable\n */\nexport function watchSource(\n el: HTMLAnchorElement\n): Observable {\n return fetch$ ||= defer(() => {\n const cached = __md_get(\"__source\", sessionStorage)\n if (cached)\n return of(cached)\n else\n return fetchSourceFacts(el.href)\n .pipe(\n tap(facts => __md_set(\"__source\", facts, sessionStorage))\n )\n })\n .pipe(\n catchError(() => EMPTY),\n filter(facts => Object.keys(facts).length > 0),\n map(facts => ({ facts })),\n shareReplay(1)\n )\n}\n\n/**\n * Mount repository information\n *\n * @param el - Repository information element\n *\n * @returns Repository information component observable\n */\nexport function mountSource(\n el: HTMLAnchorElement\n): Observable> {\n const inner = getElement(\":scope > :last-child\", el)\n return defer(() => {\n const push$ = new Subject()\n push$.subscribe(({ facts }) => {\n inner.appendChild(renderSourceFacts(facts))\n inner.setAttribute(\"data-md-state\", \"done\")\n })\n\n /* Create and return component */\n return watchSource(el)\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n defer,\n distinctUntilKeyChanged,\n finalize,\n map,\n of,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n watchElementSize,\n watchViewportAt\n} from \"~/browser\"\n\nimport { Component } from \"../_\"\nimport { Header } from \"../header\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Navigation tabs\n */\nexport interface Tabs {\n hidden: boolean /* Navigation tabs are hidden */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable /* Viewport observable */\n header$: Observable
    /* Header observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable /* Viewport observable */\n header$: Observable
    /* Header observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch navigation tabs\n *\n * @param el - Navigation tabs element\n * @param options - Options\n *\n * @returns Navigation tabs observable\n */\nexport function watchTabs(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable {\n return watchElementSize(document.body)\n .pipe(\n switchMap(() => watchViewportAt(el, { header$, viewport$ })),\n map(({ offset: { y } }) => {\n return {\n hidden: y >= 10\n }\n }),\n distinctUntilKeyChanged(\"hidden\")\n )\n}\n\n/**\n * Mount navigation tabs\n *\n * This function hides the navigation tabs when scrolling past the threshold\n * and makes them reappear in a nice CSS animation when scrolling back up.\n *\n * @param el - Navigation tabs element\n * @param options - Options\n *\n * @returns Navigation tabs component observable\n */\nexport function mountTabs(\n el: HTMLElement, options: MountOptions\n): Observable> {\n return defer(() => {\n const push$ = new Subject()\n push$.subscribe({\n\n /* Handle emission */\n next({ hidden }) {\n if (hidden)\n el.setAttribute(\"data-md-state\", \"hidden\")\n else\n el.removeAttribute(\"data-md-state\")\n },\n\n /* Handle complete */\n complete() {\n el.removeAttribute(\"data-md-state\")\n }\n })\n\n /* Create and return component */\n return (\n feature(\"navigation.tabs.sticky\")\n ? of({ hidden: false })\n : watchTabs(el, options)\n )\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n bufferCount,\n combineLatestWith,\n debounceTime,\n defer,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n finalize,\n map,\n of,\n repeat,\n scan,\n share,\n skip,\n startWith,\n switchMap,\n takeLast,\n takeUntil,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { feature } from \"~/_\"\nimport {\n Viewport,\n getElement,\n getElements,\n getLocation,\n getOptionalElement,\n watchElementSize\n} from \"~/browser\"\n\nimport {\n Component,\n getComponentElement\n} from \"../_\"\nimport { Header } from \"../header\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Table of contents\n */\nexport interface TableOfContents {\n prev: HTMLAnchorElement[][] /* Anchors (previous) */\n next: HTMLAnchorElement[][] /* Anchors (next) */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable /* Viewport observable */\n header$: Observable
    /* Header observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable /* Viewport observable */\n header$: Observable
    /* Header observable */\n target$: Observable /* Location target observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch table of contents\n *\n * This is effectively a scroll spy implementation which will account for the\n * fixed header and automatically re-calculate anchor offsets when the viewport\n * is resized. The returned observable will only emit if the table of contents\n * needs to be repainted.\n *\n * This implementation tracks an anchor element's entire path starting from its\n * level up to the top-most anchor element, e.g. `[h3, h2, h1]`. Although the\n * Material theme currently doesn't make use of this information, it enables\n * the styling of the entire hierarchy through customization.\n *\n * Note that the current anchor is the last item of the `prev` anchor list.\n *\n * @param el - Table of contents element\n * @param options - Options\n *\n * @returns Table of contents observable\n */\nexport function watchTableOfContents(\n el: HTMLElement, { viewport$, header$ }: WatchOptions\n): Observable {\n const table = new Map()\n\n /* Compute anchor-to-target mapping */\n const anchors = getElements(\"[href^=\\\\#]\", el)\n for (const anchor of anchors) {\n const id = decodeURIComponent(anchor.hash.substring(1))\n const target = getOptionalElement(`[id=\"${id}\"]`)\n if (typeof target !== \"undefined\")\n table.set(anchor, target)\n }\n\n /* Compute necessary adjustment for header */\n const adjust$ = header$\n .pipe(\n distinctUntilKeyChanged(\"height\"),\n map(({ height }) => {\n const main = getComponentElement(\"main\")\n const grid = getElement(\":scope > :first-child\", main)\n return height + 0.8 * (\n grid.offsetTop -\n main.offsetTop\n )\n }),\n share()\n )\n\n /* Compute partition of previous and next anchors */\n const partition$ = watchElementSize(document.body)\n .pipe(\n distinctUntilKeyChanged(\"height\"),\n\n /* Build index to map anchor paths to vertical offsets */\n switchMap(body => defer(() => {\n let path: HTMLAnchorElement[] = []\n return of([...table].reduce((index, [anchor, target]) => {\n while (path.length) {\n const last = table.get(path[path.length - 1])!\n if (last.tagName >= target.tagName) {\n path.pop()\n } else {\n break\n }\n }\n\n /* If the current anchor is hidden, continue with its parent */\n let offset = target.offsetTop\n while (!offset && target.parentElement) {\n target = target.parentElement\n offset = target.offsetTop\n }\n\n /* Map reversed anchor path to vertical offset */\n return index.set(\n [...path = [...path, anchor]].reverse(),\n offset\n )\n }, new Map()))\n })\n .pipe(\n\n /* Sort index by vertical offset (see https://bit.ly/30z6QSO) */\n map(index => new Map([...index].sort(([, a], [, b]) => a - b))),\n combineLatestWith(adjust$),\n\n /* Re-compute partition when viewport offset changes */\n switchMap(([index, adjust]) => viewport$\n .pipe(\n scan(([prev, next], { offset: { y }, size }) => {\n const last = y + size.height >= Math.floor(body.height)\n\n /* Look forward */\n while (next.length) {\n const [, offset] = next[0]\n if (offset - adjust < y || last) {\n prev = [...prev, next.shift()!]\n } else {\n break\n }\n }\n\n /* Look backward */\n while (prev.length) {\n const [, offset] = prev[prev.length - 1]\n if (offset - adjust >= y && !last) {\n next = [prev.pop()!, ...next]\n } else {\n break\n }\n }\n\n /* Return partition */\n return [prev, next]\n }, [[], [...index]]),\n distinctUntilChanged((a, b) => (\n a[0] === b[0] &&\n a[1] === b[1]\n ))\n )\n )\n )\n )\n )\n\n /* Compute and return anchor list migrations */\n return partition$\n .pipe(\n map(([prev, next]) => ({\n prev: prev.map(([path]) => path),\n next: next.map(([path]) => path)\n })),\n\n /* Extract anchor list migrations */\n startWith({ prev: [], next: [] }),\n bufferCount(2, 1),\n map(([a, b]) => {\n\n /* Moving down */\n if (a.prev.length < b.prev.length) {\n return {\n prev: b.prev.slice(Math.max(0, a.prev.length - 1), b.prev.length),\n next: []\n }\n\n /* Moving up */\n } else {\n return {\n prev: b.prev.slice(-1),\n next: b.next.slice(0, b.next.length - a.next.length)\n }\n }\n })\n )\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Mount table of contents\n *\n * @param el - Table of contents element\n * @param options - Options\n *\n * @returns Table of contents component observable\n */\nexport function mountTableOfContents(\n el: HTMLElement, { viewport$, header$, target$ }: MountOptions\n): Observable> {\n return defer(() => {\n const push$ = new Subject()\n push$.subscribe(({ prev, next }) => {\n\n /* Look forward */\n for (const [anchor] of next) {\n anchor.removeAttribute(\"data-md-state\")\n anchor.classList.remove(\n \"md-nav__link--active\"\n )\n }\n\n /* Look backward */\n for (const [index, [anchor]] of prev.entries()) {\n anchor.setAttribute(\"data-md-state\", \"blur\")\n anchor.classList.toggle(\n \"md-nav__link--active\",\n index === prev.length - 1\n )\n }\n })\n\n /* Set up anchor tracking, if enabled */\n if (feature(\"navigation.tracking\"))\n viewport$\n .pipe(\n takeUntil(push$.pipe(takeLast(1))),\n distinctUntilKeyChanged(\"offset\"),\n debounceTime(250),\n skip(1),\n takeUntil(target$.pipe(skip(1))),\n repeat({ delay: 250 }),\n withLatestFrom(push$)\n )\n .subscribe(([, { prev }]) => {\n const url = getLocation()\n\n /* Set hash fragment to active anchor */\n const anchor = prev[prev.length - 1]\n if (anchor && anchor.length) {\n const [active] = anchor\n const { hash } = new URL(active.href)\n if (url.hash !== hash) {\n url.hash = hash\n history.replaceState({}, \"\", `${url}`)\n }\n\n /* Reset anchor when at the top */\n } else {\n url.hash = \"\"\n history.replaceState({}, \"\", `${url}`)\n }\n })\n\n /* Create and return component */\n return watchTableOfContents(el, { viewport$, header$ })\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n Subject,\n bufferCount,\n combineLatest,\n distinctUntilChanged,\n distinctUntilKeyChanged,\n endWith,\n finalize,\n map,\n repeat,\n skip,\n takeLast,\n takeUntil,\n tap\n} from \"rxjs\"\n\nimport { Viewport } from \"~/browser\"\n\nimport { Component } from \"../_\"\nimport { Header } from \"../header\"\nimport { Main } from \"../main\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Back-to-top button\n */\nexport interface BackToTop {\n hidden: boolean /* Back-to-top button is hidden */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch options\n */\ninterface WatchOptions {\n viewport$: Observable /* Viewport observable */\n main$: Observable
    /* Main area observable */\n target$: Observable /* Location target observable */\n}\n\n/**\n * Mount options\n */\ninterface MountOptions {\n viewport$: Observable /* Viewport observable */\n header$: Observable
    /* Header observable */\n main$: Observable
    /* Main area observable */\n target$: Observable /* Location target observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Watch back-to-top\n *\n * @param _el - Back-to-top element\n * @param options - Options\n *\n * @returns Back-to-top observable\n */\nexport function watchBackToTop(\n _el: HTMLElement, { viewport$, main$, target$ }: WatchOptions\n): Observable {\n\n /* Compute direction */\n const direction$ = viewport$\n .pipe(\n map(({ offset: { y } }) => y),\n bufferCount(2, 1),\n map(([a, b]) => a > b && b > 0),\n distinctUntilChanged()\n )\n\n /* Compute whether main area is active */\n const active$ = main$\n .pipe(\n map(({ active }) => active)\n )\n\n /* Compute threshold for hiding */\n return combineLatest([active$, direction$])\n .pipe(\n map(([active, direction]) => !(active && direction)),\n distinctUntilChanged(),\n takeUntil(target$.pipe(skip(1))),\n endWith(true),\n repeat({ delay: 250 }),\n map(hidden => ({ hidden }))\n )\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Mount back-to-top\n *\n * @param el - Back-to-top element\n * @param options - Options\n *\n * @returns Back-to-top component observable\n */\nexport function mountBackToTop(\n el: HTMLElement, { viewport$, header$, main$, target$ }: MountOptions\n): Observable> {\n const push$ = new Subject()\n push$.subscribe({\n\n /* Handle emission */\n next({ hidden }) {\n if (hidden) {\n el.setAttribute(\"data-md-state\", \"hidden\")\n el.setAttribute(\"tabindex\", \"-1\")\n el.blur()\n } else {\n el.removeAttribute(\"data-md-state\")\n el.removeAttribute(\"tabindex\")\n }\n },\n\n /* Handle complete */\n complete() {\n el.style.top = \"\"\n el.setAttribute(\"data-md-state\", \"hidden\")\n el.removeAttribute(\"tabindex\")\n }\n })\n\n /* Watch header height */\n header$\n .pipe(\n takeUntil(push$.pipe(endWith(0), takeLast(1))),\n distinctUntilKeyChanged(\"height\")\n )\n .subscribe(({ height }) => {\n el.style.top = `${height + 16}px`\n })\n\n /* Create and return component */\n return watchBackToTop(el, { viewport$, main$, target$ })\n .pipe(\n tap(state => push$.next(state)),\n finalize(() => push$.complete()),\n map(state => ({ ref: el, ...state }))\n )\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n fromEvent,\n map,\n mergeMap,\n switchMap,\n takeWhile,\n tap,\n withLatestFrom\n} from \"rxjs\"\n\nimport { getElements } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch options\n */\ninterface PatchOptions {\n document$: Observable /* Document observable */\n tablet$: Observable /* Media tablet observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch indeterminate checkboxes\n *\n * This function replaces the indeterminate \"pseudo state\" with the actual\n * indeterminate state, which is used to keep navigation always expanded.\n *\n * @param options - Options\n */\nexport function patchIndeterminate(\n { document$, tablet$ }: PatchOptions\n): void {\n document$\n .pipe(\n switchMap(() => getElements(\n \"[data-md-state=indeterminate]\"\n )),\n tap(el => {\n el.indeterminate = true\n el.checked = false\n }),\n mergeMap(el => fromEvent(el, \"change\")\n .pipe(\n takeWhile(() => el.hasAttribute(\"data-md-state\")),\n map(() => el)\n )\n ),\n withLatestFrom(tablet$)\n )\n .subscribe(([el, tablet]) => {\n el.removeAttribute(\"data-md-state\")\n if (tablet)\n el.checked = false\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n filter,\n fromEvent,\n map,\n mergeMap,\n switchMap,\n tap\n} from \"rxjs\"\n\nimport { getElements } from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch options\n */\ninterface PatchOptions {\n document$: Observable /* Document observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Check whether the given device is an Apple device\n *\n * @returns Test result\n */\nfunction isAppleDevice(): boolean {\n return /(iPad|iPhone|iPod)/.test(navigator.userAgent)\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch all elements with `data-md-scrollfix` attributes\n *\n * This is a year-old patch which ensures that overflow scrolling works at the\n * top and bottom of containers on iOS by ensuring a `1px` scroll offset upon\n * the start of a touch event.\n *\n * @see https://bit.ly/2SCtAOO - Original source\n *\n * @param options - Options\n */\nexport function patchScrollfix(\n { document$ }: PatchOptions\n): void {\n document$\n .pipe(\n switchMap(() => getElements(\"[data-md-scrollfix]\")),\n tap(el => el.removeAttribute(\"data-md-scrollfix\")),\n filter(isAppleDevice),\n mergeMap(el => fromEvent(el, \"touchstart\")\n .pipe(\n map(() => el)\n )\n )\n )\n .subscribe(el => {\n const top = el.scrollTop\n\n /* We're at the top of the container */\n if (top === 0) {\n el.scrollTop = 1\n\n /* We're at the bottom of the container */\n } else if (top + el.offsetHeight === el.scrollHeight) {\n el.scrollTop = top - 1\n }\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n Observable,\n combineLatest,\n delay,\n map,\n of,\n switchMap,\n withLatestFrom\n} from \"rxjs\"\n\nimport {\n Viewport,\n watchToggle\n} from \"~/browser\"\n\n/* ----------------------------------------------------------------------------\n * Helper types\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch options\n */\ninterface PatchOptions {\n viewport$: Observable /* Viewport observable */\n tablet$: Observable /* Media tablet observable */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Patch the document body to lock when search is open\n *\n * For mobile and tablet viewports, the search is rendered full screen, which\n * leads to scroll leaking when at the top or bottom of the search result. This\n * function locks the body when the search is in full screen mode, and restores\n * the scroll position when leaving.\n *\n * @param options - Options\n */\nexport function patchScrolllock(\n { viewport$, tablet$ }: PatchOptions\n): void {\n combineLatest([watchToggle(\"search\"), tablet$])\n .pipe(\n map(([active, tablet]) => active && !tablet),\n switchMap(active => of(active)\n .pipe(\n delay(active ? 400 : 100)\n )\n ),\n withLatestFrom(viewport$)\n )\n .subscribe(([active, { offset: { y }}]) => {\n if (active) {\n document.body.setAttribute(\"data-md-state\", \"lock\")\n document.body.style.top = `-${y}px`\n } else {\n const value = -1 * parseInt(document.body.style.top, 10)\n document.body.removeAttribute(\"data-md-state\")\n document.body.style.top = \"\"\n if (value)\n window.scrollTo(0, value)\n }\n })\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\n/* ----------------------------------------------------------------------------\n * Polyfills\n * ------------------------------------------------------------------------- */\n\n/* Polyfill `Object.entries` */\nif (!Object.entries)\n Object.entries = function (obj: object) {\n const data: [string, string][] = []\n for (const key of Object.keys(obj))\n // @ts-expect-error - ignore property access warning\n data.push([key, obj[key]])\n\n /* Return entries */\n return data\n }\n\n/* Polyfill `Object.values` */\nif (!Object.values)\n Object.values = function (obj: object) {\n const data: string[] = []\n for (const key of Object.keys(obj))\n // @ts-expect-error - ignore property access warning\n 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+ "names": [] +} diff --git a/notes/assets/javascripts/config.js b/assets/javascripts/config.js similarity index 100% rename from notes/assets/javascripts/config.js rename to assets/javascripts/config.js diff --git a/notes/assets/javascripts/extra.js b/assets/javascripts/extra.js similarity index 100% rename from notes/assets/javascripts/extra.js rename to assets/javascripts/extra.js diff --git a/assets/javascripts/lunr/min/lunr.ar.min.js b/assets/javascripts/lunr/min/lunr.ar.min.js new file mode 100644 index 00000000..248ddc5d --- /dev/null +++ b/assets/javascripts/lunr/min/lunr.ar.min.js @@ -0,0 +1 @@ +!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===e.stemmerSupport)throw new Error("Lunr stemmer support is not present. 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nu når og også om op os over på selv sig sin sine sit skal skulle som sådan thi til ud under var vi vil ville vor være været".split(" ")),e.Pipeline.registerFunction(e.da.stopWordFilter,"stopWordFilter-da")}}); \ No newline at end of file diff --git a/assets/javascripts/lunr/min/lunr.de.min.js b/assets/javascripts/lunr/min/lunr.de.min.js new file mode 100644 index 00000000..f3b5c108 --- /dev/null +++ b/assets/javascripts/lunr/min/lunr.de.min.js @@ -0,0 +1,18 @@ +/*! + * Lunr languages, `German` language + * https://github.com/MihaiValentin/lunr-languages + * + * Copyright 2014, Mihai Valentin + * http://www.mozilla.org/MPL/ + */ +/*! + * based on + * Snowball JavaScript Library v0.3 + * http://code.google.com/p/urim/ + * http://snowball.tartarus.org/ + * + * Copyright 2010, Oleg Mazko + * http://www.mozilla.org/MPL/ + */ + +!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===e.stemmerSupport)throw new Error("Lunr stemmer support is not present. 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andere anderem anderen anderer anderes anderm andern anderr anders auch auf aus bei bin bis bist da damit dann das dasselbe dazu daß dein deine deinem deinen deiner deines dem demselben den denn denselben der derer derselbe derselben des desselben dessen dich die dies diese dieselbe dieselben diesem diesen dieser dieses dir doch dort du durch ein eine einem einen einer eines einig einige einigem einigen einiger einiges einmal er es etwas euch euer eure eurem euren eurer eures für gegen gewesen hab habe haben hat hatte hatten hier hin hinter ich ihm ihn ihnen ihr ihre ihrem ihren ihrer ihres im in indem ins ist jede jedem jeden jeder jedes jene jenem jenen jener jenes jetzt kann kein keine keinem keinen keiner keines können könnte machen man manche manchem manchen mancher manches mein meine meinem meinen meiner meines mich mir mit muss musste nach nicht nichts noch nun nur ob oder ohne sehr sein seine seinem seinen seiner seines selbst sich sie sind so solche solchem solchen solcher solches soll sollte sondern sonst um und uns unse unsem unsen unser unses unter viel vom von vor war waren warst was weg weil weiter welche welchem welchen welcher welches wenn werde werden wie wieder will wir wird wirst wo wollen wollte während würde würden zu zum zur zwar zwischen über".split(" ")),e.Pipeline.registerFunction(e.de.stopWordFilter,"stopWordFilter-de")}}); \ No newline at end of file diff --git a/assets/javascripts/lunr/min/lunr.du.min.js b/assets/javascripts/lunr/min/lunr.du.min.js new file mode 100644 index 00000000..49a0f3f0 --- /dev/null +++ b/assets/javascripts/lunr/min/lunr.du.min.js @@ -0,0 +1,18 @@ +/*! + * Lunr languages, `Dutch` language + * https://github.com/MihaiValentin/lunr-languages + * + * Copyright 2014, Mihai Valentin + * http://www.mozilla.org/MPL/ + */ +/*! + * based on + * Snowball JavaScript Library v0.3 + * http://code.google.com/p/urim/ + * http://snowball.tartarus.org/ + * + * Copyright 2010, Oleg Mazko + * http://www.mozilla.org/MPL/ + */ + 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00000000..29f5dfce --- /dev/null +++ b/assets/javascripts/lunr/min/lunr.fi.min.js @@ -0,0 +1,18 @@ +/*! + * Lunr languages, `Finnish` language + * https://github.com/MihaiValentin/lunr-languages + * + * Copyright 2014, Mihai Valentin + * http://www.mozilla.org/MPL/ + */ +/*! + * based on + * Snowball JavaScript Library v0.3 + * http://code.google.com/p/urim/ + * http://snowball.tartarus.org/ + * + * Copyright 2010, Oleg Mazko + * http://www.mozilla.org/MPL/ + */ + +!function(i,e){"function"==typeof define&&define.amd?define(e):"object"==typeof exports?module.exports=e():e()(i.lunr)}(this,function(){return function(i){if(void 0===i)throw new Error("Lunr is not present. 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i;this.setCurrent=function(r){C.setCurrent(r)},this.getCurrent=function(){return C.getCurrent()},this.stem=function(){var e=C.cursor;return r(),C.cursor=e,o(),C.limit_backward=e,C.cursor=C.limit,f(),C.cursor=C.limit_backward,s(),!0}};return function(r){return"function"==typeof r.update?r.update(function(r){return n.setCurrent(r),n.stem(),n.getCurrent()}):(n.setCurrent(r),n.stem(),n.getCurrent())}}(),r.Pipeline.registerFunction(r.nl.stemmer,"stemmer-nl"),r.nl.stopWordFilter=r.generateStopWordFilter(" aan al alles als altijd andere ben bij daar dan dat de der deze die dit doch doen door dus een eens en er ge geen geweest haar had heb hebben heeft hem het hier hij hoe hun iemand iets ik in is ja je kan kon kunnen maar me meer men met mij mijn moet na naar niet niets nog nu of om omdat onder ons ook op over reeds te tegen toch toen tot u uit uw van veel voor want waren was wat werd wezen wie wil worden wordt zal ze zelf zich zij zijn zo zonder zou".split(" ")),r.Pipeline.registerFunction(r.nl.stopWordFilter,"stopWordFilter-nl")}}); \ No newline at end of file diff --git a/assets/javascripts/lunr/min/lunr.no.min.js b/assets/javascripts/lunr/min/lunr.no.min.js new file mode 100644 index 00000000..92bc7e4e --- /dev/null +++ b/assets/javascripts/lunr/min/lunr.no.min.js @@ -0,0 +1,18 @@ +/*! + * Lunr languages, `Norwegian` language + * https://github.com/MihaiValentin/lunr-languages + * + * Copyright 2014, Mihai Valentin + * http://www.mozilla.org/MPL/ + */ +/*! + * based on + * Snowball JavaScript Library v0.3 + * http://code.google.com/p/urim/ + * http://snowball.tartarus.org/ + * + * Copyright 2010, Oleg Mazko + * http://www.mozilla.org/MPL/ + */ + +!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. 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")),e.Pipeline.registerFunction(e.ro.stopWordFilter,"stopWordFilter-ro")}}); \ No newline at end of file diff --git a/assets/javascripts/lunr/min/lunr.ru.min.js b/assets/javascripts/lunr/min/lunr.ru.min.js new file mode 100644 index 00000000..186cc485 --- /dev/null +++ b/assets/javascripts/lunr/min/lunr.ru.min.js @@ -0,0 +1,18 @@ +/*! + * Lunr languages, `Russian` language + * https://github.com/MihaiValentin/lunr-languages + * + * Copyright 2014, Mihai Valentin + * http://www.mozilla.org/MPL/ + */ +/*! + * based on + * Snowball JavaScript Library v0.3 + * http://code.google.com/p/urim/ + * http://snowball.tartarus.org/ + * + * Copyright 2010, Oleg Mazko + * http://www.mozilla.org/MPL/ + */ + +!function(e,n){"function"==typeof define&&define.amd?define(n):"object"==typeof exports?module.exports=n():n()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. 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http://snowball.tartarus.org/ + * + * Copyright 2010, Oleg Mazko + * http://www.mozilla.org/MPL/ + */ + +!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. 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n()&&Dr.find_among_b(ar,2)}function p(){return n()&&Dr.find_among_b(mr,4)}function g(){return n()&&Dr.find_among_b(dr,2)}function y(){return n()&&Dr.find_among_b(fr,4)}function z(){return n()&&Dr.find_among_b(br,2)}function v(){return n()&&Dr.find_among_b(wr,2)&&c()}function h(){return Dr.eq_s_b(2,"ki")}function q(){return n()&&Dr.find_among_b(_r,2)&&o()}function C(){return n()&&Dr.find_among_b(kr,4)&&c()}function P(){return n()&&Dr.find_among_b(pr,4)}function F(){return n()&&Dr.find_among_b(gr,4)&&c()}function S(){return Dr.find_among_b(yr,4)}function W(){return n()&&Dr.find_among_b(zr,2)}function L(){return n()&&Dr.find_among_b(vr,4)}function x(){return n()&&Dr.find_among_b(hr,8)}function A(){return Dr.find_among_b(qr,2)}function E(){return n()&&Dr.find_among_b(Cr,32)&&c()}function j(){return Dr.find_among_b(Pr,8)&&c()}function T(){return n()&&Dr.find_among_b(Fr,4)&&c()}function Z(){return Dr.eq_s_b(3,"ken")&&c()}function B(){var r=Dr.limit-Dr.cursor;return!(T()||(Dr.cursor=Dr.limit-r,E()||(Dr.cursor=Dr.limit-r,j()||(Dr.cursor=Dr.limit-r,Z()))))}function D(){if(A()){var r=Dr.limit-Dr.cursor;if(S()||(Dr.cursor=Dr.limit-r,W()||(Dr.cursor=Dr.limit-r,C()||(Dr.cursor=Dr.limit-r,P()||(Dr.cursor=Dr.limit-r,F()||(Dr.cursor=Dr.limit-r))))),T())return!1}return!0}function G(){if(W()){Dr.bra=Dr.cursor,Dr.slice_del();var r=Dr.limit-Dr.cursor;return Dr.ket=Dr.cursor,x()||(Dr.cursor=Dr.limit-r,E()||(Dr.cursor=Dr.limit-r,j()||(Dr.cursor=Dr.limit-r,T()||(Dr.cursor=Dr.limit-r)))),nr=!1,!1}return!0}function H(){if(!L())return!0;var r=Dr.limit-Dr.cursor;return!E()&&(Dr.cursor=Dr.limit-r,!j())}function I(){var r,i=Dr.limit-Dr.cursor;return!(S()||(Dr.cursor=Dr.limit-i,F()||(Dr.cursor=Dr.limit-i,P()||(Dr.cursor=Dr.limit-i,C()))))||(Dr.bra=Dr.cursor,Dr.slice_del(),r=Dr.limit-Dr.cursor,Dr.ket=Dr.cursor,T()||(Dr.cursor=Dr.limit-r),!1)}function J(){var r,i=Dr.limit-Dr.cursor;if(Dr.ket=Dr.cursor,nr=!0,B()&&(Dr.cursor=Dr.limit-i,D()&&(Dr.cursor=Dr.limit-i,G()&&(Dr.cursor=Dr.limit-i,H()&&(Dr.cursor=Dr.limit-i,I()))))){if(Dr.cursor=Dr.limit-i,!x())return;Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,r=Dr.limit-Dr.cursor,S()||(Dr.cursor=Dr.limit-r,W()||(Dr.cursor=Dr.limit-r,C()||(Dr.cursor=Dr.limit-r,P()||(Dr.cursor=Dr.limit-r,F()||(Dr.cursor=Dr.limit-r))))),T()||(Dr.cursor=Dr.limit-r)}Dr.bra=Dr.cursor,Dr.slice_del()}function K(){var r,i,e,n;if(Dr.ket=Dr.cursor,h()){if(r=Dr.limit-Dr.cursor,p())return Dr.bra=Dr.cursor,Dr.slice_del(),i=Dr.limit-Dr.cursor,Dr.ket=Dr.cursor,W()?(Dr.bra=Dr.cursor,Dr.slice_del(),K()):(Dr.cursor=Dr.limit-i,a()&&(Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,W()&&(Dr.bra=Dr.cursor,Dr.slice_del(),K()))),!0;if(Dr.cursor=Dr.limit-r,w()){if(Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,e=Dr.limit-Dr.cursor,d())Dr.bra=Dr.cursor,Dr.slice_del();else{if(Dr.cursor=Dr.limit-e,Dr.ket=Dr.cursor,!a()&&(Dr.cursor=Dr.limit-e,!m()&&(Dr.cursor=Dr.limit-e,!K())))return!0;Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,W()&&(Dr.bra=Dr.cursor,Dr.slice_del(),K())}return!0}if(Dr.cursor=Dr.limit-r,g()){if(n=Dr.limit-Dr.cursor,d())Dr.bra=Dr.cursor,Dr.slice_del();else if(Dr.cursor=Dr.limit-n,m())Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,W()&&(Dr.bra=Dr.cursor,Dr.slice_del(),K());else if(Dr.cursor=Dr.limit-n,!K())return!1;return!0}}return!1}function M(r){if(Dr.ket=Dr.cursor,!g()&&(Dr.cursor=Dr.limit-r,!k()))return!1;var i=Dr.limit-Dr.cursor;if(d())Dr.bra=Dr.cursor,Dr.slice_del();else if(Dr.cursor=Dr.limit-i,m())Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,W()&&(Dr.bra=Dr.cursor,Dr.slice_del(),K());else if(Dr.cursor=Dr.limit-i,!K())return!1;return!0}function N(r){if(Dr.ket=Dr.cursor,!z()&&(Dr.cursor=Dr.limit-r,!b()))return!1;var i=Dr.limit-Dr.cursor;return!(!m()&&(Dr.cursor=Dr.limit-i,!d()))&&(Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,W()&&(Dr.bra=Dr.cursor,Dr.slice_del(),K()),!0)}function O(){var r,i=Dr.limit-Dr.cursor;return Dr.ket=Dr.cursor,!(!w()&&(Dr.cursor=Dr.limit-i,!v()))&&(Dr.bra=Dr.cursor,Dr.slice_del(),r=Dr.limit-Dr.cursor,Dr.ket=Dr.cursor,!(!W()||(Dr.bra=Dr.cursor,Dr.slice_del(),!K()))||(Dr.cursor=Dr.limit-r,Dr.ket=Dr.cursor,!(a()||(Dr.cursor=Dr.limit-r,m()||(Dr.cursor=Dr.limit-r,K())))||(Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,W()&&(Dr.bra=Dr.cursor,Dr.slice_del(),K()),!0)))}function Q(){var r,i,e=Dr.limit-Dr.cursor;if(Dr.ket=Dr.cursor,!p()&&(Dr.cursor=Dr.limit-e,!f()&&(Dr.cursor=Dr.limit-e,!_())))return!1;if(Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,r=Dr.limit-Dr.cursor,a())Dr.bra=Dr.cursor,Dr.slice_del(),i=Dr.limit-Dr.cursor,Dr.ket=Dr.cursor,W()||(Dr.cursor=Dr.limit-i);else if(Dr.cursor=Dr.limit-r,!W())return!0;return Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,K(),!0}function R(){var r,i,e=Dr.limit-Dr.cursor;if(Dr.ket=Dr.cursor,W())return Dr.bra=Dr.cursor,Dr.slice_del(),void K();if(Dr.cursor=Dr.limit-e,Dr.ket=Dr.cursor,q())if(Dr.bra=Dr.cursor,Dr.slice_del(),r=Dr.limit-Dr.cursor,Dr.ket=Dr.cursor,d())Dr.bra=Dr.cursor,Dr.slice_del();else{if(Dr.cursor=Dr.limit-r,Dr.ket=Dr.cursor,!a()&&(Dr.cursor=Dr.limit-r,!m())){if(Dr.cursor=Dr.limit-r,Dr.ket=Dr.cursor,!W())return;if(Dr.bra=Dr.cursor,Dr.slice_del(),!K())return}Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,W()&&(Dr.bra=Dr.cursor,Dr.slice_del(),K())}else if(Dr.cursor=Dr.limit-e,!M(e)&&(Dr.cursor=Dr.limit-e,!N(e))){if(Dr.cursor=Dr.limit-e,Dr.ket=Dr.cursor,y())return Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,i=Dr.limit-Dr.cursor,void(a()?(Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,W()&&(Dr.bra=Dr.cursor,Dr.slice_del(),K())):(Dr.cursor=Dr.limit-i,W()?(Dr.bra=Dr.cursor,Dr.slice_del(),K()):(Dr.cursor=Dr.limit-i,K())));if(Dr.cursor=Dr.limit-e,!O()){if(Dr.cursor=Dr.limit-e,d())return Dr.bra=Dr.cursor,void Dr.slice_del();Dr.cursor=Dr.limit-e,K()||(Dr.cursor=Dr.limit-e,Q()||(Dr.cursor=Dr.limit-e,Dr.ket=Dr.cursor,(a()||(Dr.cursor=Dr.limit-e,m()))&&(Dr.bra=Dr.cursor,Dr.slice_del(),Dr.ket=Dr.cursor,W()&&(Dr.bra=Dr.cursor,Dr.slice_del(),K()))))}}}function U(){var r;if(Dr.ket=Dr.cursor,r=Dr.find_among_b(Sr,4))switch(Dr.bra=Dr.cursor,r){case 1:Dr.slice_from("p");break;case 2:Dr.slice_from("ç");break;case 3:Dr.slice_from("t");break;case 4:Dr.slice_from("k")}}function V(){for(;;){var r=Dr.limit-Dr.cursor;if(Dr.in_grouping_b(Wr,97,305)){Dr.cursor=Dr.limit-r;break}if(Dr.cursor=Dr.limit-r,Dr.cursor<=Dr.limit_backward)return!1;Dr.cursor--}return!0}function X(r,i,e){if(Dr.cursor=Dr.limit-r,V()){var n=Dr.limit-Dr.cursor;if(!Dr.eq_s_b(1,i)&&(Dr.cursor=Dr.limit-n,!Dr.eq_s_b(1,e)))return!0;Dr.cursor=Dr.limit-r;var t=Dr.cursor;return Dr.insert(Dr.cursor,Dr.cursor,e),Dr.cursor=t,!1}return!0}function Y(){var r=Dr.limit-Dr.cursor;(Dr.eq_s_b(1,"d")||(Dr.cursor=Dr.limit-r,Dr.eq_s_b(1,"g")))&&X(r,"a","ı")&&X(r,"e","i")&&X(r,"o","u")&&X(r,"ö","ü")}function $(){for(var r,i=Dr.cursor,e=2;;){for(r=Dr.cursor;!Dr.in_grouping(Wr,97,305);){if(Dr.cursor>=Dr.limit)return Dr.cursor=r,!(e>0)&&(Dr.cursor=i,!0);Dr.cursor++}e--}}function rr(r,i,e){for(;!Dr.eq_s(i,e);){if(Dr.cursor>=Dr.limit)return!0;Dr.cursor++}return(tr=i)!=Dr.limit||(Dr.cursor=r,!1)}function ir(){var r=Dr.cursor;return!rr(r,2,"ad")||(Dr.cursor=r,!rr(r,5,"soyad"))}function er(){var r=Dr.cursor;return!ir()&&(Dr.limit_backward=r,Dr.cursor=Dr.limit,Y(),Dr.cursor=Dr.limit,U(),!0)}var nr,tr,ur=[new i("m",-1,-1),new i("n",-1,-1),new i("miz",-1,-1),new i("niz",-1,-1),new i("muz",-1,-1),new i("nuz",-1,-1),new i("müz",-1,-1),new i("nüz",-1,-1),new i("mız",-1,-1),new i("nız",-1,-1)],or=[new i("leri",-1,-1),new i("ları",-1,-1)],sr=[new i("ni",-1,-1),new i("nu",-1,-1),new i("nü",-1,-1),new i("nı",-1,-1)],cr=[new i("in",-1,-1),new i("un",-1,-1),new i("ün",-1,-1),new i("ın",-1,-1)],lr=[new i("a",-1,-1),new i("e",-1,-1)],ar=[new i("na",-1,-1),new i("ne",-1,-1)],mr=[new i("da",-1,-1),new i("ta",-1,-1),new i("de",-1,-1),new i("te",-1,-1)],dr=[new i("nda",-1,-1),new i("nde",-1,-1)],fr=[new i("dan",-1,-1),new i("tan",-1,-1),new i("den",-1,-1),new i("ten",-1,-1)],br=[new i("ndan",-1,-1),new i("nden",-1,-1)],wr=[new i("la",-1,-1),new i("le",-1,-1)],_r=[new i("ca",-1,-1),new i("ce",-1,-1)],kr=[new i("im",-1,-1),new i("um",-1,-1),new i("üm",-1,-1),new i("ım",-1,-1)],pr=[new 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i("dün",-1,-1),new i("tün",-1,-1),new i("dın",-1,-1),new i("tın",-1,-1),new i("du",-1,-1),new i("tu",-1,-1),new i("dü",-1,-1),new i("tü",-1,-1),new i("dı",-1,-1),new i("tı",-1,-1)],Pr=[new i("sa",-1,-1),new i("se",-1,-1),new i("sak",-1,-1),new i("sek",-1,-1),new i("sam",-1,-1),new i("sem",-1,-1),new i("san",-1,-1),new i("sen",-1,-1)],Fr=[new i("miş",-1,-1),new i("muş",-1,-1),new i("müş",-1,-1),new i("mış",-1,-1)],Sr=[new i("b",-1,1),new i("c",-1,2),new i("d",-1,3),new i("ğ",-1,4)],Wr=[17,65,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,32,8,0,0,0,0,0,0,1],Lr=[1,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,8,0,0,0,0,0,0,1],xr=[1,64,16,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1],Ar=[17,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,130],Er=[1,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,1],jr=[17],Tr=[65],Zr=[65],Br=[["a",xr,97,305],["e",Ar,101,252],["ı",Er,97,305],["i",jr,101,105],["o",Tr,111,117],["ö",Zr,246,252],["u",Tr,111,117]],Dr=new e;this.setCurrent=function(r){Dr.setCurrent(r)},this.getCurrent=function(){return Dr.getCurrent()},this.stem=function(){return!!($()&&(Dr.limit_backward=Dr.cursor,Dr.cursor=Dr.limit,J(),Dr.cursor=Dr.limit,nr&&(R(),Dr.cursor=Dr.limit_backward,er())))}};return function(r){return"function"==typeof r.update?r.update(function(r){return n.setCurrent(r),n.stem(),n.getCurrent()}):(n.setCurrent(r),n.stem(),n.getCurrent())}}(),r.Pipeline.registerFunction(r.tr.stemmer,"stemmer-tr"),r.tr.stopWordFilter=r.generateStopWordFilter("acaba altmış altı ama ancak arada aslında ayrıca bana bazı belki ben benden beni benim beri beş bile bin bir biri birkaç birkez birçok birşey birşeyi biz bizden bize bizi bizim bu buna bunda bundan bunlar bunları bunların bunu bunun burada böyle böylece da daha dahi de defa değil diye diğer doksan dokuz dolayı dolayısıyla dört edecek eden ederek edilecek ediliyor edilmesi ediyor elli en etmesi etti ettiği ettiğini eğer gibi göre halen hangi hatta hem henüz hep hepsi her herhangi herkesin hiç hiçbir iki ile ilgili ise itibaren itibariyle için işte kadar karşın katrilyon kendi kendilerine kendini kendisi kendisine kendisini kez ki kim kimden kime kimi kimse kırk milyar milyon mu mü mı nasıl ne neden nedenle nerde nerede nereye niye niçin o olan olarak oldu olduklarını olduğu olduğunu olmadı olmadığı olmak olması olmayan olmaz olsa olsun olup olur olursa oluyor on ona ondan onlar onlardan onları onların onu onun otuz oysa pek rağmen sadece sanki sekiz seksen sen senden seni senin siz sizden sizi sizin tarafından trilyon tüm var vardı ve veya ya yani yapacak yapmak yaptı yaptıkları yaptığı yaptığını yapılan yapılması yapıyor yedi yerine yetmiş yine yirmi yoksa yüz zaten çok çünkü öyle üzere üç şey şeyden şeyi şeyler şu şuna şunda şundan şunları şunu şöyle".split(" ")),r.Pipeline.registerFunction(r.tr.stopWordFilter,"stopWordFilter-tr")}}); \ No newline at end of file diff --git a/assets/javascripts/lunr/min/lunr.vi.min.js b/assets/javascripts/lunr/min/lunr.vi.min.js new file mode 100644 index 00000000..22aed28c --- /dev/null +++ b/assets/javascripts/lunr/min/lunr.vi.min.js @@ -0,0 +1 @@ +!function(e,r){"function"==typeof define&&define.amd?define(r):"object"==typeof exports?module.exports=r():r()(e.lunr)}(this,function(){return function(e){if(void 0===e)throw new Error("Lunr is not present. Please include / require Lunr before this script.");if(void 0===e.stemmerSupport)throw new Error("Lunr stemmer support is not present. 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+ + return this; + } + TinySegmenter.prototype.ctype_ = function(str) { + for (var i in this.chartype_) { + if (str.match(this.chartype_[i][0])) { + return this.chartype_[i][1]; + } + } + return "O"; + } + + TinySegmenter.prototype.ts_ = function(v) { + if (v) { return v; } + return 0; + } + + TinySegmenter.prototype.segment = function(input) { + if (input == null || input == undefined || input == "") { + return []; + } + var result = []; + var seg = ["B3","B2","B1"]; + var ctype = ["O","O","O"]; + var o = input.split(""); + for (i = 0; i < o.length; ++i) { + seg.push(o[i]); + ctype.push(this.ctype_(o[i])) + } + seg.push("E1"); + seg.push("E2"); + seg.push("E3"); + ctype.push("O"); + ctype.push("O"); + ctype.push("O"); + var word = seg[3]; + var p1 = "U"; + var p2 = "U"; + var p3 = "U"; + for (var i = 4; i < seg.length - 3; ++i) { + var score = this.BIAS__; + var w1 = seg[i-3]; + var w2 = seg[i-2]; + var w3 = seg[i-1]; + var w4 = seg[i]; + var w5 = seg[i+1]; + var w6 = seg[i+2]; + var c1 = ctype[i-3]; + var c2 = ctype[i-2]; + var c3 = ctype[i-1]; + var c4 = ctype[i]; + var c5 = ctype[i+1]; + var c6 = ctype[i+2]; + score += this.ts_(this.UP1__[p1]); + score += this.ts_(this.UP2__[p2]); + score += this.ts_(this.UP3__[p3]); + score += this.ts_(this.BP1__[p1 + p2]); + score += this.ts_(this.BP2__[p2 + p3]); + score += this.ts_(this.UW1__[w1]); + score += this.ts_(this.UW2__[w2]); + score += this.ts_(this.UW3__[w3]); + score += this.ts_(this.UW4__[w4]); + score += this.ts_(this.UW5__[w5]); + score += this.ts_(this.UW6__[w6]); + score += this.ts_(this.BW1__[w2 + w3]); + score += this.ts_(this.BW2__[w3 + w4]); + score += this.ts_(this.BW3__[w4 + w5]); + score += this.ts_(this.TW1__[w1 + w2 + w3]); + score += this.ts_(this.TW2__[w2 + w3 + w4]); + score += this.ts_(this.TW3__[w3 + w4 + w5]); + score += this.ts_(this.TW4__[w4 + w5 + w6]); + score += this.ts_(this.UC1__[c1]); + score += this.ts_(this.UC2__[c2]); + score += this.ts_(this.UC3__[c3]); + score += this.ts_(this.UC4__[c4]); + score += this.ts_(this.UC5__[c5]); + score += this.ts_(this.UC6__[c6]); + score += this.ts_(this.BC1__[c2 + c3]); + score += this.ts_(this.BC2__[c3 + c4]); + score += this.ts_(this.BC3__[c4 + c5]); + score += this.ts_(this.TC1__[c1 + c2 + c3]); + score += this.ts_(this.TC2__[c2 + c3 + c4]); + score += this.ts_(this.TC3__[c3 + c4 + c5]); + score += this.ts_(this.TC4__[c4 + c5 + c6]); + // score += this.ts_(this.TC5__[c4 + c5 + c6]); + score += this.ts_(this.UQ1__[p1 + c1]); + score += this.ts_(this.UQ2__[p2 + c2]); + score += this.ts_(this.UQ3__[p3 + c3]); + score += this.ts_(this.BQ1__[p2 + c2 + c3]); + score += this.ts_(this.BQ2__[p2 + c3 + c4]); + score += this.ts_(this.BQ3__[p3 + c2 + c3]); + score += this.ts_(this.BQ4__[p3 + c3 + c4]); + score += this.ts_(this.TQ1__[p2 + c1 + c2 + c3]); + score += this.ts_(this.TQ2__[p2 + c2 + c3 + c4]); + score += this.ts_(this.TQ3__[p3 + c1 + c2 + c3]); + score += this.ts_(this.TQ4__[p3 + c2 + c3 + c4]); + var p = "O"; + if (score > 0) { + result.push(word); + word = ""; + p = "B"; + } + p1 = p2; + p2 = p3; + p3 = p; + word += seg[i]; + } + result.push(word); + + return result; + } + + lunr.TinySegmenter = TinySegmenter; + }; + +})); \ No newline at end of file diff --git a/assets/javascripts/lunr/wordcut.js b/assets/javascripts/lunr/wordcut.js new file mode 100644 index 00000000..146f4b44 --- /dev/null +++ b/assets/javascripts/lunr/wordcut.js @@ -0,0 +1,6708 @@ +(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}(g.lunr || (g.lunr = {})).wordcut = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o 1; + }) + this.addWords(words, false) + } + if(finalize){ + this.finalizeDict(); + } + }, + + dictSeek: function (l, r, ch, strOffset, pos) { + var ans = null; + while (l <= r) { + var m = Math.floor((l + r) / 2), + dict_item = this.dict[m], + len = dict_item.length; + if (len <= strOffset) { + l = m + 1; + } else { + var ch_ = dict_item[strOffset]; + if (ch_ < ch) { + l = m + 1; + } else if (ch_ > ch) { + r = m - 1; + } else { + ans = m; + if (pos == LEFT) { + r = m - 1; + } else { + l = m + 1; + } + } + } + } + return ans; + }, + + isFinal: function (acceptor) { + return this.dict[acceptor.l].length == acceptor.strOffset; + }, + + createAcceptor: function () { + return { + l: 0, + r: this.dict.length - 1, + strOffset: 0, + isFinal: false, + dict: this, + transit: function (ch) { + return this.dict.transit(this, ch); + }, + isError: false, + tag: "DICT", + w: 1, + type: "DICT" + }; + }, + + transit: function (acceptor, ch) { + var l = this.dictSeek(acceptor.l, + acceptor.r, + ch, + acceptor.strOffset, + LEFT); + if (l !== null) { + var r = this.dictSeek(l, + acceptor.r, + ch, + acceptor.strOffset, + RIGHT); + acceptor.l = l; + acceptor.r = r; + acceptor.strOffset++; + acceptor.isFinal = this.isFinal(acceptor); + } else { + acceptor.isError = true; + } + return acceptor; + }, + + sortuniq: function(a){ + return a.sort().filter(function(item, pos, arr){ + return !pos || item != arr[pos - 1]; + }) + }, + + flatten: function(a){ + //[[1,2],[3]] -> [1,2,3] + return [].concat.apply([], a); + } +}; +module.exports = WordcutDict; + +}).call(this,"/dist/tmp") +},{"glob":16,"path":22}],3:[function(require,module,exports){ +var WordRule = { + createAcceptor: function(tag) { + if (tag["WORD_RULE"]) + return null; + + return {strOffset: 0, + isFinal: false, + transit: function(ch) { + var lch = ch.toLowerCase(); + if (lch >= "a" && lch <= "z") { + this.isFinal = true; + this.strOffset++; + } else { + this.isError = true; + } + return this; + }, + isError: false, + tag: "WORD_RULE", + type: "WORD_RULE", + w: 1}; + } +}; + +var NumberRule = { + createAcceptor: function(tag) { + if (tag["NUMBER_RULE"]) + return null; + + return {strOffset: 0, + isFinal: false, + transit: function(ch) { + if (ch >= "0" && ch <= "9") { + this.isFinal = true; + this.strOffset++; + } else { + this.isError = true; + } + return this; + }, + isError: false, + tag: "NUMBER_RULE", + type: "NUMBER_RULE", + w: 1}; + } +}; + +var SpaceRule = { + tag: "SPACE_RULE", + createAcceptor: function(tag) { + + if (tag["SPACE_RULE"]) + return null; + + return {strOffset: 0, + isFinal: false, + transit: function(ch) { + if (ch == " " || ch == "\t" || ch == "\r" || ch == "\n" || + ch == "\u00A0" || ch=="\u2003"//nbsp and emsp + ) { + this.isFinal = true; + this.strOffset++; + } else { + this.isError = true; + } + return this; + }, + isError: false, + tag: SpaceRule.tag, + w: 1, + type: "SPACE_RULE"}; + } +} + +var SingleSymbolRule = { + tag: "SINSYM", + createAcceptor: function(tag) { + return {strOffset: 0, + isFinal: false, + transit: function(ch) { + if (this.strOffset == 0 && ch.match(/^[\@\(\)\/\,\-\."`]$/)) { + this.isFinal = true; + this.strOffset++; + } else { + this.isError = true; + } + return this; + }, + isError: false, + tag: "SINSYM", + w: 1, + type: "SINSYM"}; + } +} + + +var LatinRules = [WordRule, SpaceRule, SingleSymbolRule, NumberRule]; + +module.exports = LatinRules; + +},{}],4:[function(require,module,exports){ +var _ = require("underscore") + , WordcutCore = require("./wordcut_core"); +var PathInfoBuilder = { + + /* + buildByPartAcceptors: function(path, acceptors, i) { + var + var genInfos = partAcceptors.reduce(function(genInfos, acceptor) { + + }, []); + + return genInfos; + } + */ + + buildByAcceptors: function(path, finalAcceptors, i) { + var self = this; + var infos = finalAcceptors.map(function(acceptor) { + var p = i - acceptor.strOffset + 1 + , _info = path[p]; + + var info = {p: p, + mw: _info.mw + (acceptor.mw === undefined ? 0 : acceptor.mw), + w: acceptor.w + _info.w, + unk: (acceptor.unk ? acceptor.unk : 0) + _info.unk, + type: acceptor.type}; + + if (acceptor.type == "PART") { + for(var j = p + 1; j <= i; j++) { + path[j].merge = p; + } + info.merge = p; + } + + return info; + }); + return infos.filter(function(info) { return info; }); + }, + + fallback: function(path, leftBoundary, text, i) { + var _info = path[leftBoundary]; + if (text[i].match(/[\u0E48-\u0E4E]/)) { + if (leftBoundary != 0) + leftBoundary = path[leftBoundary].p; + return {p: leftBoundary, + mw: 0, + w: 1 + _info.w, + unk: 1 + _info.unk, + type: "UNK"}; +/* } else if(leftBoundary > 0 && path[leftBoundary].type !== "UNK") { + leftBoundary = path[leftBoundary].p; + return {p: leftBoundary, + w: 1 + _info.w, + unk: 1 + _info.unk, + type: "UNK"}; */ + } else { + return {p: leftBoundary, + mw: _info.mw, + w: 1 + _info.w, + unk: 1 + _info.unk, + type: "UNK"}; + } + }, + + build: function(path, finalAcceptors, i, leftBoundary, text) { + var basicPathInfos = this.buildByAcceptors(path, finalAcceptors, i); + if (basicPathInfos.length > 0) { + return basicPathInfos; + } else { + return [this.fallback(path, leftBoundary, text, i)]; + } + } +}; + +module.exports = function() { + return _.clone(PathInfoBuilder); +} + +},{"./wordcut_core":8,"underscore":25}],5:[function(require,module,exports){ +var _ = require("underscore"); + + +var PathSelector = { + selectPath: function(paths) { + var path = paths.reduce(function(selectedPath, path) { + if (selectedPath == null) { + return path; + } else { + if (path.unk < selectedPath.unk) + return path; + if (path.unk == selectedPath.unk) { + if (path.mw < selectedPath.mw) + return path + if (path.mw == selectedPath.mw) { + if (path.w < selectedPath.w) + return path; + } + } + return selectedPath; + } + }, null); + return path; + }, + + createPath: function() { + return [{p:null, w:0, unk:0, type: "INIT", mw:0}]; + } +}; + +module.exports = function() { + return _.clone(PathSelector); +}; + +},{"underscore":25}],6:[function(require,module,exports){ +function isMatch(pat, offset, ch) { + if (pat.length <= offset) + return false; + var _ch = pat[offset]; + return _ch == ch || + (_ch.match(/[กข]/) && ch.match(/[ก-ฮ]/)) || + (_ch.match(/[มบ]/) && ch.match(/[ก-ฮ]/)) || + (_ch.match(/\u0E49/) && ch.match(/[\u0E48-\u0E4B]/)); +} + +var Rule0 = { + pat: "เหก็ม", + createAcceptor: function(tag) { + return {strOffset: 0, + isFinal: false, + transit: function(ch) { + if (isMatch(Rule0.pat, this.strOffset,ch)) { + this.isFinal = (this.strOffset + 1 == Rule0.pat.length); + this.strOffset++; + } else { + this.isError = true; + } + return this; + }, + isError: false, + tag: "THAI_RULE", + type: "THAI_RULE", + w: 1}; + } +}; + +var PartRule = { + createAcceptor: function(tag) { + return {strOffset: 0, + patterns: [ + "แก", "เก", "ก้", "กก์", "กา", "กี", "กิ", "กืก" + ], + isFinal: false, + transit: function(ch) { + var offset = this.strOffset; + this.patterns = this.patterns.filter(function(pat) { + return isMatch(pat, offset, ch); + }); + + if (this.patterns.length > 0) { + var len = 1 + offset; + this.isFinal = this.patterns.some(function(pat) { + return pat.length == len; + }); + this.strOffset++; + } else { + this.isError = true; + } + return this; + }, + isError: false, + tag: "PART", + type: "PART", + unk: 1, + w: 1}; + } +}; + +var ThaiRules = [Rule0, PartRule]; + +module.exports = ThaiRules; + +},{}],7:[function(require,module,exports){ +var sys = require("sys") + , WordcutDict = require("./dict") + , WordcutCore = require("./wordcut_core") + , PathInfoBuilder = require("./path_info_builder") + , PathSelector = require("./path_selector") + , Acceptors = require("./acceptors") + , latinRules = require("./latin_rules") + , thaiRules = require("./thai_rules") + , _ = require("underscore"); + + +var Wordcut = Object.create(WordcutCore); +Wordcut.defaultPathInfoBuilder = PathInfoBuilder; +Wordcut.defaultPathSelector = PathSelector; +Wordcut.defaultAcceptors = Acceptors; +Wordcut.defaultLatinRules = latinRules; +Wordcut.defaultThaiRules = thaiRules; +Wordcut.defaultDict = WordcutDict; + + +Wordcut.initNoDict = function(dict_path) { + var self = this; + self.pathInfoBuilder = new self.defaultPathInfoBuilder; + self.pathSelector = new self.defaultPathSelector; + self.acceptors = new self.defaultAcceptors; + self.defaultLatinRules.forEach(function(rule) { + self.acceptors.creators.push(rule); + }); + self.defaultThaiRules.forEach(function(rule) { + self.acceptors.creators.push(rule); + }); +}; + +Wordcut.init = function(dict_path, withDefault, additionalWords) { + withDefault = withDefault || false; + this.initNoDict(); + var dict = _.clone(this.defaultDict); + dict.init(dict_path, withDefault, additionalWords); + this.acceptors.creators.push(dict); +}; + +module.exports = Wordcut; + +},{"./acceptors":1,"./dict":2,"./latin_rules":3,"./path_info_builder":4,"./path_selector":5,"./thai_rules":6,"./wordcut_core":8,"sys":28,"underscore":25}],8:[function(require,module,exports){ +var WordcutCore = { + + buildPath: function(text) { + var self = this + , path = self.pathSelector.createPath() + , leftBoundary = 0; + self.acceptors.reset(); + for (var i = 0; i < text.length; i++) { + var ch = text[i]; + self.acceptors.transit(ch); + + var possiblePathInfos = self + .pathInfoBuilder + .build(path, + self.acceptors.getFinalAcceptors(), + i, + leftBoundary, + text); + var selectedPath = self.pathSelector.selectPath(possiblePathInfos) + + path.push(selectedPath); + if (selectedPath.type !== "UNK") { + leftBoundary = i; + } + } + return path; + }, + + pathToRanges: function(path) { + var e = path.length - 1 + , ranges = []; + + while (e > 0) { + var info = path[e] + , s = info.p; + + if (info.merge !== undefined && ranges.length > 0) { + var r = ranges[ranges.length - 1]; + r.s = info.merge; + s = r.s; + } else { + ranges.push({s:s, e:e}); + } + e = s; + } + return ranges.reverse(); + }, + + rangesToText: function(text, ranges, delimiter) { + return ranges.map(function(r) { + return text.substring(r.s, r.e); + }).join(delimiter); + }, + + cut: function(text, delimiter) { + var path = this.buildPath(text) + , ranges = this.pathToRanges(path); + return this + .rangesToText(text, ranges, + (delimiter === undefined ? "|" : delimiter)); + }, + + cutIntoRanges: function(text, noText) { + var path = this.buildPath(text) + , ranges = this.pathToRanges(path); + + if (!noText) { + ranges.forEach(function(r) { + r.text = text.substring(r.s, r.e); + }); + } + return ranges; + }, + + cutIntoArray: function(text) { + var path = this.buildPath(text) + , ranges = this.pathToRanges(path); + + return ranges.map(function(r) { + return text.substring(r.s, r.e) + }); + } +}; + +module.exports = WordcutCore; + +},{}],9:[function(require,module,exports){ +// http://wiki.commonjs.org/wiki/Unit_Testing/1.0 +// +// THIS IS NOT TESTED NOR LIKELY TO WORK OUTSIDE V8! +// +// Originally from narwhal.js (http://narwhaljs.org) +// Copyright (c) 2009 Thomas Robinson <280north.com> +// +// Permission is hereby granted, free of charge, to any person obtaining a copy +// of this software and associated documentation files (the 'Software'), to +// deal in the Software without restriction, including without limitation the +// rights to use, copy, modify, merge, publish, distribute, sublicense, and/or +// sell copies of the Software, and to permit persons to whom the Software is +// furnished to do so, subject to the following conditions: +// +// The above copyright notice and this permission notice shall be included in +// all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR +// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, +// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE +// AUTHORS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN +// ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION +// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + +// when used in node, this will actually load the util module we depend on +// versus loading the builtin util module as happens otherwise +// this is a bug in node module loading as far as I am concerned +var util = require('util/'); + +var pSlice = Array.prototype.slice; +var hasOwn = Object.prototype.hasOwnProperty; + +// 1. The assert module provides functions that throw +// AssertionError's when particular conditions are not met. The +// assert module must conform to the following interface. + +var assert = module.exports = ok; + +// 2. The AssertionError is defined in assert. +// new assert.AssertionError({ message: message, +// actual: actual, +// expected: expected }) + +assert.AssertionError = function AssertionError(options) { + this.name = 'AssertionError'; + this.actual = options.actual; + this.expected = options.expected; + this.operator = options.operator; + if (options.message) { + this.message = options.message; + this.generatedMessage = false; + } else { + this.message = getMessage(this); + this.generatedMessage = true; + } + var stackStartFunction = options.stackStartFunction || fail; + + if (Error.captureStackTrace) { + Error.captureStackTrace(this, stackStartFunction); + } + else { + // non v8 browsers so we can have a stacktrace + var err = new Error(); + if (err.stack) { + var out = err.stack; + + // try to strip useless frames + var fn_name = stackStartFunction.name; + var idx = out.indexOf('\n' + fn_name); + if (idx >= 0) { + // once we have located the function frame + // we need to strip out everything before it (and its line) + var next_line = out.indexOf('\n', idx + 1); + out = out.substring(next_line + 1); + } + + this.stack = out; + } + } +}; + +// assert.AssertionError instanceof Error +util.inherits(assert.AssertionError, Error); + +function replacer(key, value) { + if (util.isUndefined(value)) { + return '' + value; + } + if (util.isNumber(value) && !isFinite(value)) { + return value.toString(); + } + if (util.isFunction(value) || util.isRegExp(value)) { + return value.toString(); + } + return value; +} + +function truncate(s, n) { + if (util.isString(s)) { + return s.length < n ? s : s.slice(0, n); + } else { + return s; + } +} + +function getMessage(self) { + return truncate(JSON.stringify(self.actual, replacer), 128) + ' ' + + self.operator + ' ' + + truncate(JSON.stringify(self.expected, replacer), 128); +} + +// At present only the three keys mentioned above are used and +// understood by the spec. Implementations or sub modules can pass +// other keys to the AssertionError's constructor - they will be +// ignored. + +// 3. All of the following functions must throw an AssertionError +// when a corresponding condition is not met, with a message that +// may be undefined if not provided. All assertion methods provide +// both the actual and expected values to the assertion error for +// display purposes. + +function fail(actual, expected, message, operator, stackStartFunction) { + throw new assert.AssertionError({ + message: message, + actual: actual, + expected: expected, + operator: operator, + stackStartFunction: stackStartFunction + }); +} + +// EXTENSION! allows for well behaved errors defined elsewhere. +assert.fail = fail; + +// 4. Pure assertion tests whether a value is truthy, as determined +// by !!guard. +// assert.ok(guard, message_opt); +// This statement is equivalent to assert.equal(true, !!guard, +// message_opt);. To test strictly for the value true, use +// assert.strictEqual(true, guard, message_opt);. + +function ok(value, message) { + if (!value) fail(value, true, message, '==', assert.ok); +} +assert.ok = ok; + +// 5. The equality assertion tests shallow, coercive equality with +// ==. +// assert.equal(actual, expected, message_opt); + +assert.equal = function equal(actual, expected, message) { + if (actual != expected) fail(actual, expected, message, '==', assert.equal); +}; + +// 6. The non-equality assertion tests for whether two objects are not equal +// with != assert.notEqual(actual, expected, message_opt); + +assert.notEqual = function notEqual(actual, expected, message) { + if (actual == expected) { + fail(actual, expected, message, '!=', assert.notEqual); + } +}; + +// 7. The equivalence assertion tests a deep equality relation. +// assert.deepEqual(actual, expected, message_opt); + +assert.deepEqual = function deepEqual(actual, expected, message) { + if (!_deepEqual(actual, expected)) { + fail(actual, expected, message, 'deepEqual', assert.deepEqual); + } +}; + +function _deepEqual(actual, expected) { + // 7.1. All identical values are equivalent, as determined by ===. + if (actual === expected) { + return true; + + } else if (util.isBuffer(actual) && util.isBuffer(expected)) { + if (actual.length != expected.length) return false; + + for (var i = 0; i < actual.length; i++) { + if (actual[i] !== expected[i]) return false; + } + + return true; + + // 7.2. If the expected value is a Date object, the actual value is + // equivalent if it is also a Date object that refers to the same time. + } else if (util.isDate(actual) && util.isDate(expected)) { + return actual.getTime() === expected.getTime(); + + // 7.3 If the expected value is a RegExp object, the actual value is + // equivalent if it is also a RegExp object with the same source and + // properties (`global`, `multiline`, `lastIndex`, `ignoreCase`). + } else if (util.isRegExp(actual) && util.isRegExp(expected)) { + return actual.source === expected.source && + actual.global === expected.global && + actual.multiline === expected.multiline && + actual.lastIndex === expected.lastIndex && + actual.ignoreCase === expected.ignoreCase; + + // 7.4. Other pairs that do not both pass typeof value == 'object', + // equivalence is determined by ==. + } else if (!util.isObject(actual) && !util.isObject(expected)) { + return actual == expected; + + // 7.5 For all other Object pairs, including Array objects, equivalence is + // determined by having the same number of owned properties (as verified + // with Object.prototype.hasOwnProperty.call), the same set of keys + // (although not necessarily the same order), equivalent values for every + // corresponding key, and an identical 'prototype' property. Note: this + // accounts for both named and indexed properties on Arrays. + } else { + return objEquiv(actual, expected); + } +} + +function isArguments(object) { + return Object.prototype.toString.call(object) == '[object Arguments]'; +} + +function objEquiv(a, b) { + if (util.isNullOrUndefined(a) || util.isNullOrUndefined(b)) + return false; + // an identical 'prototype' property. + if (a.prototype !== b.prototype) return false; + // if one is a primitive, the other must be same + if (util.isPrimitive(a) || util.isPrimitive(b)) { + return a === b; + } + var aIsArgs = isArguments(a), + bIsArgs = isArguments(b); + if ((aIsArgs && !bIsArgs) || (!aIsArgs && bIsArgs)) + return false; + if (aIsArgs) { + a = pSlice.call(a); + b = pSlice.call(b); + return _deepEqual(a, b); + } + var ka = objectKeys(a), + kb = objectKeys(b), + key, i; + // having the same number of owned properties (keys incorporates + // hasOwnProperty) + if (ka.length != kb.length) + return false; + //the same set of keys (although not necessarily the same order), + ka.sort(); + kb.sort(); + //~~~cheap key test + for (i = ka.length - 1; i >= 0; i--) { + if (ka[i] != kb[i]) + return false; + } + //equivalent values for every corresponding key, and + //~~~possibly expensive deep test + for (i = ka.length - 1; i >= 0; i--) { + key = ka[i]; + if (!_deepEqual(a[key], b[key])) return false; + } + return true; +} + +// 8. The non-equivalence assertion tests for any deep inequality. +// assert.notDeepEqual(actual, expected, message_opt); + +assert.notDeepEqual = function notDeepEqual(actual, expected, message) { + if (_deepEqual(actual, expected)) { + fail(actual, expected, message, 'notDeepEqual', assert.notDeepEqual); + } +}; + +// 9. The strict equality assertion tests strict equality, as determined by ===. +// assert.strictEqual(actual, expected, message_opt); + +assert.strictEqual = function strictEqual(actual, expected, message) { + if (actual !== expected) { + fail(actual, expected, message, '===', assert.strictEqual); + } +}; + +// 10. The strict non-equality assertion tests for strict inequality, as +// determined by !==. assert.notStrictEqual(actual, expected, message_opt); + +assert.notStrictEqual = function notStrictEqual(actual, expected, message) { + if (actual === expected) { + fail(actual, expected, message, '!==', assert.notStrictEqual); + } +}; + +function expectedException(actual, expected) { + if (!actual || !expected) { + return false; + } + + if (Object.prototype.toString.call(expected) == '[object RegExp]') { + return expected.test(actual); + } else if (actual instanceof expected) { + return true; + } else if (expected.call({}, actual) === true) { + return true; + } + + return false; +} + +function _throws(shouldThrow, block, expected, message) { + var actual; + + if (util.isString(expected)) { + message = expected; + expected = null; + } + + try { + block(); + } catch (e) { + actual = e; + } + + message = (expected && expected.name ? ' (' + expected.name + ').' : '.') + + (message ? ' ' + message : '.'); + + if (shouldThrow && !actual) { + fail(actual, expected, 'Missing expected exception' + message); + } + + if (!shouldThrow && expectedException(actual, expected)) { + fail(actual, expected, 'Got unwanted exception' + message); + } + + if ((shouldThrow && actual && expected && + !expectedException(actual, expected)) || (!shouldThrow && actual)) { + throw actual; + } +} + +// 11. Expected to throw an error: +// assert.throws(block, Error_opt, message_opt); + +assert.throws = function(block, /*optional*/error, /*optional*/message) { + _throws.apply(this, [true].concat(pSlice.call(arguments))); +}; + +// EXTENSION! This is annoying to write outside this module. +assert.doesNotThrow = function(block, /*optional*/message) { + _throws.apply(this, [false].concat(pSlice.call(arguments))); +}; + +assert.ifError = function(err) { if (err) {throw err;}}; + +var objectKeys = Object.keys || function (obj) { + var keys = []; + for (var key in obj) { + if (hasOwn.call(obj, key)) keys.push(key); + } + return keys; +}; + +},{"util/":28}],10:[function(require,module,exports){ +'use strict'; +module.exports = balanced; +function balanced(a, b, str) { + if (a instanceof RegExp) a = maybeMatch(a, str); + if (b instanceof RegExp) b = maybeMatch(b, str); + + var r = range(a, b, str); + + return r && { + start: r[0], + end: r[1], + pre: str.slice(0, r[0]), + body: str.slice(r[0] + a.length, r[1]), + post: str.slice(r[1] + b.length) + }; +} + +function maybeMatch(reg, str) { + var m = str.match(reg); + return m ? m[0] : null; +} + +balanced.range = range; +function range(a, b, str) { + var begs, beg, left, right, result; + var ai = str.indexOf(a); + var bi = str.indexOf(b, ai + 1); + var i = ai; + + if (ai >= 0 && bi > 0) { + begs = []; + left = str.length; + + while (i >= 0 && !result) { + if (i == ai) { + begs.push(i); + ai = str.indexOf(a, i + 1); + } else if (begs.length == 1) { + result = [ begs.pop(), bi ]; + } else { + beg = begs.pop(); + if (beg < left) { + left = beg; + right = bi; + } + + bi = str.indexOf(b, i + 1); + } + + i = ai < bi && ai >= 0 ? ai : bi; + } + + if (begs.length) { + result = [ left, right ]; + } + } + + return result; +} + +},{}],11:[function(require,module,exports){ +var concatMap = require('concat-map'); +var balanced = require('balanced-match'); + +module.exports = expandTop; + +var escSlash = '\0SLASH'+Math.random()+'\0'; +var escOpen = '\0OPEN'+Math.random()+'\0'; +var escClose = '\0CLOSE'+Math.random()+'\0'; +var escComma = '\0COMMA'+Math.random()+'\0'; +var escPeriod = '\0PERIOD'+Math.random()+'\0'; + +function numeric(str) { + return parseInt(str, 10) == str + ? parseInt(str, 10) + : str.charCodeAt(0); +} + +function escapeBraces(str) { + return str.split('\\\\').join(escSlash) + .split('\\{').join(escOpen) + .split('\\}').join(escClose) + .split('\\,').join(escComma) + .split('\\.').join(escPeriod); +} + +function unescapeBraces(str) { + return str.split(escSlash).join('\\') + .split(escOpen).join('{') + .split(escClose).join('}') + .split(escComma).join(',') + .split(escPeriod).join('.'); +} + + +// Basically just str.split(","), but handling cases +// where we have nested braced sections, which should be +// treated as individual members, like {a,{b,c},d} +function parseCommaParts(str) { + if (!str) + return ['']; + + var parts = []; + var m = balanced('{', '}', str); + + if (!m) + return str.split(','); + + var pre = m.pre; + var body = m.body; + var post = m.post; + var p = pre.split(','); + + p[p.length-1] += '{' + body + '}'; + var postParts = parseCommaParts(post); + if (post.length) { + p[p.length-1] += postParts.shift(); + p.push.apply(p, postParts); + } + + parts.push.apply(parts, p); + + return parts; +} + +function expandTop(str) { + if (!str) + return []; + + // I don't know why Bash 4.3 does this, but it does. + // Anything starting with {} will have the first two bytes preserved + // but *only* at the top level, so {},a}b will not expand to anything, + // but a{},b}c will be expanded to [a}c,abc]. + // One could argue that this is a bug in Bash, but since the goal of + // this module is to match Bash's rules, we escape a leading {} + if (str.substr(0, 2) === '{}') { + str = '\\{\\}' + str.substr(2); + } + + return expand(escapeBraces(str), true).map(unescapeBraces); +} + +function identity(e) { + return e; +} + +function embrace(str) { + return '{' + str + '}'; +} +function isPadded(el) { + return /^-?0\d/.test(el); +} + +function lte(i, y) { + return i <= y; +} +function gte(i, y) { + return i >= y; +} + +function expand(str, isTop) { + var expansions = []; + + var m = balanced('{', '}', str); + if (!m || /\$$/.test(m.pre)) return [str]; + + var isNumericSequence = /^-?\d+\.\.-?\d+(?:\.\.-?\d+)?$/.test(m.body); + var isAlphaSequence = /^[a-zA-Z]\.\.[a-zA-Z](?:\.\.-?\d+)?$/.test(m.body); + var isSequence = isNumericSequence || isAlphaSequence; + var isOptions = m.body.indexOf(',') >= 0; + if (!isSequence && !isOptions) { + // {a},b} + if (m.post.match(/,.*\}/)) { + str = m.pre + '{' + m.body + escClose + m.post; + return expand(str); + } + return [str]; + } + + var n; + if (isSequence) { + n = m.body.split(/\.\./); + } else { + n = parseCommaParts(m.body); + if (n.length === 1) { + // x{{a,b}}y ==> x{a}y x{b}y + n = expand(n[0], false).map(embrace); + if (n.length === 1) { + var post = m.post.length + ? expand(m.post, false) + : ['']; + return post.map(function(p) { + return m.pre + n[0] + p; + }); + } + } + } + + // at this point, n is the parts, and we know it's not a comma set + // with a single entry. + + // no need to expand pre, since it is guaranteed to be free of brace-sets + var pre = m.pre; + var post = m.post.length + ? expand(m.post, false) + : ['']; + + var N; + + if (isSequence) { + var x = numeric(n[0]); + var y = numeric(n[1]); + var width = Math.max(n[0].length, n[1].length) + var incr = n.length == 3 + ? Math.abs(numeric(n[2])) + : 1; + var test = lte; + var reverse = y < x; + if (reverse) { + incr *= -1; + test = gte; + } + var pad = n.some(isPadded); + + N = []; + + for (var i = x; test(i, y); i += incr) { + var c; + if (isAlphaSequence) { + c = String.fromCharCode(i); + if (c === '\\') + c = ''; + } else { + c = String(i); + if (pad) { + var need = width - c.length; + if (need > 0) { + var z = new Array(need + 1).join('0'); + if (i < 0) + c = '-' + z + c.slice(1); + else + c = z + c; + } + } + } + N.push(c); + } + } else { + N = concatMap(n, function(el) { return expand(el, false) }); + } + + for (var j = 0; j < N.length; j++) { + for (var k = 0; k < post.length; k++) { + var expansion = pre + N[j] + post[k]; + if (!isTop || isSequence || expansion) + expansions.push(expansion); + } + } + + return expansions; +} + + +},{"balanced-match":10,"concat-map":13}],12:[function(require,module,exports){ + +},{}],13:[function(require,module,exports){ +module.exports = function (xs, fn) { + var res = []; + for (var i = 0; i < xs.length; i++) { + var x = fn(xs[i], i); + if (isArray(x)) res.push.apply(res, x); + else res.push(x); + } + return res; +}; + +var isArray = Array.isArray || function (xs) { + return Object.prototype.toString.call(xs) === '[object Array]'; +}; + +},{}],14:[function(require,module,exports){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +function EventEmitter() { + this._events = this._events || {}; + this._maxListeners = this._maxListeners || undefined; +} +module.exports = EventEmitter; + +// Backwards-compat with node 0.10.x +EventEmitter.EventEmitter = EventEmitter; + +EventEmitter.prototype._events = undefined; +EventEmitter.prototype._maxListeners = undefined; + +// By default EventEmitters will print a warning if more than 10 listeners are +// added to it. This is a useful default which helps finding memory leaks. +EventEmitter.defaultMaxListeners = 10; + +// Obviously not all Emitters should be limited to 10. This function allows +// that to be increased. Set to zero for unlimited. +EventEmitter.prototype.setMaxListeners = function(n) { + if (!isNumber(n) || n < 0 || isNaN(n)) + throw TypeError('n must be a positive number'); + this._maxListeners = n; + return this; +}; + +EventEmitter.prototype.emit = function(type) { + var er, handler, len, args, i, listeners; + + if (!this._events) + this._events = {}; + + // If there is no 'error' event listener then throw. + if (type === 'error') { + if (!this._events.error || + (isObject(this._events.error) && !this._events.error.length)) { + er = arguments[1]; + if (er instanceof Error) { + throw er; // Unhandled 'error' event + } + throw TypeError('Uncaught, unspecified "error" event.'); + } + } + + handler = this._events[type]; + + if (isUndefined(handler)) + return false; + + if (isFunction(handler)) { + switch (arguments.length) { + // fast cases + case 1: + handler.call(this); + break; + case 2: + handler.call(this, arguments[1]); + break; + case 3: + handler.call(this, arguments[1], arguments[2]); + break; + // slower + default: + len = arguments.length; + args = new Array(len - 1); + for (i = 1; i < len; i++) + args[i - 1] = arguments[i]; + handler.apply(this, args); + } + } else if (isObject(handler)) { + len = arguments.length; + args = new Array(len - 1); + for (i = 1; i < len; i++) + args[i - 1] = arguments[i]; + + listeners = handler.slice(); + len = listeners.length; + for (i = 0; i < len; i++) + listeners[i].apply(this, args); + } + + return true; +}; + +EventEmitter.prototype.addListener = function(type, listener) { + var m; + + if (!isFunction(listener)) + throw TypeError('listener must be a function'); + + if (!this._events) + this._events = {}; + + // To avoid recursion in the case that type === "newListener"! Before + // adding it to the listeners, first emit "newListener". + if (this._events.newListener) + this.emit('newListener', type, + isFunction(listener.listener) ? + listener.listener : listener); + + if (!this._events[type]) + // Optimize the case of one listener. Don't need the extra array object. + this._events[type] = listener; + else if (isObject(this._events[type])) + // If we've already got an array, just append. + this._events[type].push(listener); + else + // Adding the second element, need to change to array. + this._events[type] = [this._events[type], listener]; + + // Check for listener leak + if (isObject(this._events[type]) && !this._events[type].warned) { + var m; + if (!isUndefined(this._maxListeners)) { + m = this._maxListeners; + } else { + m = EventEmitter.defaultMaxListeners; + } + + if (m && m > 0 && this._events[type].length > m) { + this._events[type].warned = true; + console.error('(node) warning: possible EventEmitter memory ' + + 'leak detected. %d listeners added. ' + + 'Use emitter.setMaxListeners() to increase limit.', + this._events[type].length); + if (typeof console.trace === 'function') { + // not supported in IE 10 + console.trace(); + } + } + } + + return this; +}; + +EventEmitter.prototype.on = EventEmitter.prototype.addListener; + +EventEmitter.prototype.once = function(type, listener) { + if (!isFunction(listener)) + throw TypeError('listener must be a function'); + + var fired = false; + + function g() { + this.removeListener(type, g); + + if (!fired) { + fired = true; + listener.apply(this, arguments); + } + } + + g.listener = listener; + this.on(type, g); + + return this; +}; + +// emits a 'removeListener' event iff the listener was removed +EventEmitter.prototype.removeListener = function(type, listener) { + var list, position, length, i; + + if (!isFunction(listener)) + throw TypeError('listener must be a function'); + + if (!this._events || !this._events[type]) + return this; + + list = this._events[type]; + length = list.length; + position = -1; + + if (list === listener || + (isFunction(list.listener) && list.listener === listener)) { + delete this._events[type]; + if (this._events.removeListener) + this.emit('removeListener', type, listener); + + } else if (isObject(list)) { + for (i = length; i-- > 0;) { + if (list[i] === listener || + (list[i].listener && list[i].listener === listener)) { + position = i; + break; + } + } + + if (position < 0) + return this; + + if (list.length === 1) { + list.length = 0; + delete this._events[type]; + } else { + list.splice(position, 1); + } + + if (this._events.removeListener) + this.emit('removeListener', type, listener); + } + + return this; +}; + +EventEmitter.prototype.removeAllListeners = function(type) { + var key, listeners; + + if (!this._events) + return this; + + // not listening for removeListener, no need to emit + if (!this._events.removeListener) { + if (arguments.length === 0) + this._events = {}; + else if (this._events[type]) + delete this._events[type]; + return this; + } + + // emit removeListener for all listeners on all events + if (arguments.length === 0) { + for (key in this._events) { + if (key === 'removeListener') continue; + this.removeAllListeners(key); + } + this.removeAllListeners('removeListener'); + this._events = {}; + return this; + } + + listeners = this._events[type]; + + if (isFunction(listeners)) { + this.removeListener(type, listeners); + } else { + // LIFO order + while (listeners.length) + this.removeListener(type, listeners[listeners.length - 1]); + } + delete this._events[type]; + + return this; +}; + +EventEmitter.prototype.listeners = function(type) { + var ret; + if (!this._events || !this._events[type]) + ret = []; + else if (isFunction(this._events[type])) + ret = [this._events[type]]; + else + ret = this._events[type].slice(); + return ret; +}; + +EventEmitter.listenerCount = function(emitter, type) { + var ret; + if (!emitter._events || !emitter._events[type]) + ret = 0; + else if (isFunction(emitter._events[type])) + ret = 1; + else + ret = emitter._events[type].length; + return ret; +}; + +function isFunction(arg) { + return typeof arg === 'function'; +} + +function isNumber(arg) { + return typeof arg === 'number'; +} + +function isObject(arg) { + return typeof arg === 'object' && arg !== null; +} + +function isUndefined(arg) { + return arg === void 0; +} + +},{}],15:[function(require,module,exports){ +(function (process){ +exports.alphasort = alphasort +exports.alphasorti = alphasorti +exports.setopts = setopts +exports.ownProp = ownProp +exports.makeAbs = makeAbs +exports.finish = finish +exports.mark = mark +exports.isIgnored = isIgnored +exports.childrenIgnored = childrenIgnored + +function ownProp (obj, field) { + return Object.prototype.hasOwnProperty.call(obj, field) +} + +var path = require("path") +var minimatch = require("minimatch") +var isAbsolute = require("path-is-absolute") +var Minimatch = minimatch.Minimatch + +function alphasorti (a, b) { + return a.toLowerCase().localeCompare(b.toLowerCase()) +} + +function alphasort (a, b) { + return a.localeCompare(b) +} + +function setupIgnores (self, options) { + self.ignore = options.ignore || [] + + if (!Array.isArray(self.ignore)) + self.ignore = [self.ignore] + + if (self.ignore.length) { + self.ignore = self.ignore.map(ignoreMap) + } +} + +function ignoreMap (pattern) { + var gmatcher = null + if (pattern.slice(-3) === '/**') { + var gpattern = pattern.replace(/(\/\*\*)+$/, '') + gmatcher = new Minimatch(gpattern) + } + + return { + matcher: new Minimatch(pattern), + gmatcher: gmatcher + } +} + +function setopts (self, pattern, options) { + if (!options) + options = {} + + // base-matching: just use globstar for that. + if (options.matchBase && -1 === pattern.indexOf("/")) { + if (options.noglobstar) { + throw new Error("base matching requires globstar") + } + pattern = "**/" + pattern + } + + self.silent = !!options.silent + self.pattern = pattern + self.strict = options.strict !== false + self.realpath = !!options.realpath + self.realpathCache = options.realpathCache || Object.create(null) + self.follow = !!options.follow + self.dot = !!options.dot + self.mark = !!options.mark + self.nodir = !!options.nodir + if (self.nodir) + self.mark = true + self.sync = !!options.sync + self.nounique = !!options.nounique + self.nonull = !!options.nonull + self.nosort = !!options.nosort + self.nocase = !!options.nocase + self.stat = !!options.stat + self.noprocess = !!options.noprocess + + self.maxLength = options.maxLength || Infinity + self.cache = options.cache || Object.create(null) + self.statCache = options.statCache || Object.create(null) + self.symlinks = options.symlinks || Object.create(null) + + setupIgnores(self, options) + + self.changedCwd = false + var cwd = process.cwd() + if (!ownProp(options, "cwd")) + self.cwd = cwd + else { + self.cwd = options.cwd + self.changedCwd = path.resolve(options.cwd) !== cwd + } + + self.root = options.root || path.resolve(self.cwd, "/") + self.root = path.resolve(self.root) + if (process.platform === "win32") + self.root = self.root.replace(/\\/g, "/") + + self.nomount = !!options.nomount + + // disable comments and negation unless the user explicitly + // passes in false as the option. + options.nonegate = options.nonegate === false ? false : true + options.nocomment = options.nocomment === false ? false : true + deprecationWarning(options) + + self.minimatch = new Minimatch(pattern, options) + self.options = self.minimatch.options +} + +// TODO(isaacs): remove entirely in v6 +// exported to reset in tests +exports.deprecationWarned +function deprecationWarning(options) { + if (!options.nonegate || !options.nocomment) { + if (process.noDeprecation !== true && !exports.deprecationWarned) { + var msg = 'glob WARNING: comments and negation will be disabled in v6' + if (process.throwDeprecation) + throw new Error(msg) + else if (process.traceDeprecation) + console.trace(msg) + else + console.error(msg) + + exports.deprecationWarned = true + } + } +} + +function finish (self) { + var nou = self.nounique + var all = nou ? [] : Object.create(null) + + for (var i = 0, l = self.matches.length; i < l; i ++) { + var matches = self.matches[i] + if (!matches || Object.keys(matches).length === 0) { + if (self.nonull) { + // do like the shell, and spit out the literal glob + var literal = self.minimatch.globSet[i] + if (nou) + all.push(literal) + else + all[literal] = true + } + } else { + // had matches + var m = Object.keys(matches) + if (nou) + all.push.apply(all, m) + else + m.forEach(function (m) { + all[m] = true + }) + } + } + + if (!nou) + all = Object.keys(all) + + if (!self.nosort) + all = all.sort(self.nocase ? alphasorti : alphasort) + + // at *some* point we statted all of these + if (self.mark) { + for (var i = 0; i < all.length; i++) { + all[i] = self._mark(all[i]) + } + if (self.nodir) { + all = all.filter(function (e) { + return !(/\/$/.test(e)) + }) + } + } + + if (self.ignore.length) + all = all.filter(function(m) { + return !isIgnored(self, m) + }) + + self.found = all +} + +function mark (self, p) { + var abs = makeAbs(self, p) + var c = self.cache[abs] + var m = p + if (c) { + var isDir = c === 'DIR' || Array.isArray(c) + var slash = p.slice(-1) === '/' + + if (isDir && !slash) + m += '/' + else if (!isDir && slash) + m = m.slice(0, -1) + + if (m !== p) { + var mabs = makeAbs(self, m) + self.statCache[mabs] = self.statCache[abs] + self.cache[mabs] = self.cache[abs] + } + } + + return m +} + +// lotta situps... +function makeAbs (self, f) { + var abs = f + if (f.charAt(0) === '/') { + abs = path.join(self.root, f) + } else if (isAbsolute(f) || f === '') { + abs = f + } else if (self.changedCwd) { + abs = path.resolve(self.cwd, f) + } else { + abs = path.resolve(f) + } + return abs +} + + +// Return true, if pattern ends with globstar '**', for the accompanying parent directory. +// Ex:- If node_modules/** is the pattern, add 'node_modules' to ignore list along with it's contents +function isIgnored (self, path) { + if (!self.ignore.length) + return false + + return self.ignore.some(function(item) { + return item.matcher.match(path) || !!(item.gmatcher && item.gmatcher.match(path)) + }) +} + +function childrenIgnored (self, path) { + if (!self.ignore.length) + return false + + return self.ignore.some(function(item) { + return !!(item.gmatcher && item.gmatcher.match(path)) + }) +} + +}).call(this,require('_process')) +},{"_process":24,"minimatch":20,"path":22,"path-is-absolute":23}],16:[function(require,module,exports){ +(function (process){ +// Approach: +// +// 1. Get the minimatch set +// 2. For each pattern in the set, PROCESS(pattern, false) +// 3. Store matches per-set, then uniq them +// +// PROCESS(pattern, inGlobStar) +// Get the first [n] items from pattern that are all strings +// Join these together. This is PREFIX. +// If there is no more remaining, then stat(PREFIX) and +// add to matches if it succeeds. END. +// +// If inGlobStar and PREFIX is symlink and points to dir +// set ENTRIES = [] +// else readdir(PREFIX) as ENTRIES +// If fail, END +// +// with ENTRIES +// If pattern[n] is GLOBSTAR +// // handle the case where the globstar match is empty +// // by pruning it out, and testing the resulting pattern +// PROCESS(pattern[0..n] + pattern[n+1 .. $], false) +// // handle other cases. +// for ENTRY in ENTRIES (not dotfiles) +// // attach globstar + tail onto the entry +// // Mark that this entry is a globstar match +// PROCESS(pattern[0..n] + ENTRY + pattern[n .. $], true) +// +// else // not globstar +// for ENTRY in ENTRIES (not dotfiles, unless pattern[n] is dot) +// Test ENTRY against pattern[n] +// If fails, continue +// If passes, PROCESS(pattern[0..n] + item + pattern[n+1 .. $]) +// +// Caveat: +// Cache all stats and readdirs results to minimize syscall. Since all +// we ever care about is existence and directory-ness, we can just keep +// `true` for files, and [children,...] for directories, or `false` for +// things that don't exist. + +module.exports = glob + +var fs = require('fs') +var minimatch = require('minimatch') +var Minimatch = minimatch.Minimatch +var inherits = require('inherits') +var EE = require('events').EventEmitter +var path = require('path') +var assert = require('assert') +var isAbsolute = require('path-is-absolute') +var globSync = require('./sync.js') +var common = require('./common.js') +var alphasort = common.alphasort +var alphasorti = common.alphasorti +var setopts = common.setopts +var ownProp = common.ownProp +var inflight = require('inflight') +var util = require('util') +var childrenIgnored = common.childrenIgnored +var isIgnored = common.isIgnored + +var once = require('once') + +function glob (pattern, options, cb) { + if (typeof options === 'function') cb = options, options = {} + if (!options) options = {} + + if (options.sync) { + if (cb) + throw new TypeError('callback provided to sync glob') + return globSync(pattern, options) + } + + return new Glob(pattern, options, cb) +} + +glob.sync = globSync +var GlobSync = glob.GlobSync = globSync.GlobSync + +// old api surface +glob.glob = glob + +glob.hasMagic = function (pattern, options_) { + var options = util._extend({}, options_) + options.noprocess = true + + var g = new Glob(pattern, options) + var set = g.minimatch.set + if (set.length > 1) + return true + + for (var j = 0; j < set[0].length; j++) { + if (typeof set[0][j] !== 'string') + return true + } + + return false +} + +glob.Glob = Glob +inherits(Glob, EE) +function Glob (pattern, options, cb) { + if (typeof options === 'function') { + cb = options + options = null + } + + if (options && options.sync) { + if (cb) + throw new TypeError('callback provided to sync glob') + return new GlobSync(pattern, options) + } + + if (!(this instanceof Glob)) + return new Glob(pattern, options, cb) + + setopts(this, pattern, options) + this._didRealPath = false + + // process each pattern in the minimatch set + var n = this.minimatch.set.length + + // The matches are stored as {: true,...} so that + // duplicates are automagically pruned. + // Later, we do an Object.keys() on these. + // Keep them as a list so we can fill in when nonull is set. + this.matches = new Array(n) + + if (typeof cb === 'function') { + cb = once(cb) + this.on('error', cb) + this.on('end', function (matches) { + cb(null, matches) + }) + } + + var self = this + var n = this.minimatch.set.length + this._processing = 0 + this.matches = new Array(n) + + this._emitQueue = [] + this._processQueue = [] + this.paused = false + + if (this.noprocess) + return this + + if (n === 0) + return done() + + for (var i = 0; i < n; i ++) { + this._process(this.minimatch.set[i], i, false, done) + } + + function done () { + --self._processing + if (self._processing <= 0) + self._finish() + } +} + +Glob.prototype._finish = function () { + assert(this instanceof Glob) + if (this.aborted) + return + + if (this.realpath && !this._didRealpath) + return this._realpath() + + common.finish(this) + this.emit('end', this.found) +} + +Glob.prototype._realpath = function () { + if (this._didRealpath) + return + + this._didRealpath = true + + var n = this.matches.length + if (n === 0) + return this._finish() + + var self = this + for (var i = 0; i < this.matches.length; i++) + this._realpathSet(i, next) + + function next () { + if (--n === 0) + self._finish() + } +} + +Glob.prototype._realpathSet = function (index, cb) { + var matchset = this.matches[index] + if (!matchset) + return cb() + + var found = Object.keys(matchset) + var self = this + var n = found.length + + if (n === 0) + return cb() + + var set = this.matches[index] = Object.create(null) + found.forEach(function (p, i) { + // If there's a problem with the stat, then it means that + // one or more of the links in the realpath couldn't be + // resolved. just return the abs value in that case. + p = self._makeAbs(p) + fs.realpath(p, self.realpathCache, function (er, real) { + if (!er) + set[real] = true + else if (er.syscall === 'stat') + set[p] = true + else + self.emit('error', er) // srsly wtf right here + + if (--n === 0) { + self.matches[index] = set + cb() + } + }) + }) +} + +Glob.prototype._mark = function (p) { + return common.mark(this, p) +} + +Glob.prototype._makeAbs = function (f) { + return common.makeAbs(this, f) +} + +Glob.prototype.abort = function () { + this.aborted = true + this.emit('abort') +} + +Glob.prototype.pause = function () { + if (!this.paused) { + this.paused = true + this.emit('pause') + } +} + +Glob.prototype.resume = function () { + if (this.paused) { + this.emit('resume') + this.paused = false + if (this._emitQueue.length) { + var eq = this._emitQueue.slice(0) + this._emitQueue.length = 0 + for (var i = 0; i < eq.length; i ++) { + var e = eq[i] + this._emitMatch(e[0], e[1]) + } + } + if (this._processQueue.length) { + var pq = this._processQueue.slice(0) + this._processQueue.length = 0 + for (var i = 0; i < pq.length; i ++) { + var p = pq[i] + this._processing-- + this._process(p[0], p[1], p[2], p[3]) + } + } + } +} + +Glob.prototype._process = function (pattern, index, inGlobStar, cb) { + assert(this instanceof Glob) + assert(typeof cb === 'function') + + if (this.aborted) + return + + this._processing++ + if (this.paused) { + this._processQueue.push([pattern, index, inGlobStar, cb]) + return + } + + //console.error('PROCESS %d', this._processing, pattern) + + // Get the first [n] parts of pattern that are all strings. + var n = 0 + while (typeof pattern[n] === 'string') { + n ++ + } + // now n is the index of the first one that is *not* a string. + + // see if there's anything else + var prefix + switch (n) { + // if not, then this is rather simple + case pattern.length: + this._processSimple(pattern.join('/'), index, cb) + return + + case 0: + // pattern *starts* with some non-trivial item. + // going to readdir(cwd), but not include the prefix in matches. + prefix = null + break + + default: + // pattern has some string bits in the front. + // whatever it starts with, whether that's 'absolute' like /foo/bar, + // or 'relative' like '../baz' + prefix = pattern.slice(0, n).join('/') + break + } + + var remain = pattern.slice(n) + + // get the list of entries. + var read + if (prefix === null) + read = '.' + else if (isAbsolute(prefix) || isAbsolute(pattern.join('/'))) { + if (!prefix || !isAbsolute(prefix)) + prefix = '/' + prefix + read = prefix + } else + read = prefix + + var abs = this._makeAbs(read) + + //if ignored, skip _processing + if (childrenIgnored(this, read)) + return cb() + + var isGlobStar = remain[0] === minimatch.GLOBSTAR + if (isGlobStar) + this._processGlobStar(prefix, read, abs, remain, index, inGlobStar, cb) + else + this._processReaddir(prefix, read, abs, remain, index, inGlobStar, cb) +} + +Glob.prototype._processReaddir = function (prefix, read, abs, remain, index, inGlobStar, cb) { + var self = this + this._readdir(abs, inGlobStar, function (er, entries) { + return self._processReaddir2(prefix, read, abs, remain, index, inGlobStar, entries, cb) + }) +} + +Glob.prototype._processReaddir2 = function (prefix, read, abs, remain, index, inGlobStar, entries, cb) { + + // if the abs isn't a dir, then nothing can match! + if (!entries) + return cb() + + // It will only match dot entries if it starts with a dot, or if + // dot is set. Stuff like @(.foo|.bar) isn't allowed. + var pn = remain[0] + var negate = !!this.minimatch.negate + var rawGlob = pn._glob + var dotOk = this.dot || rawGlob.charAt(0) === '.' + + var matchedEntries = [] + for (var i = 0; i < entries.length; i++) { + var e = entries[i] + if (e.charAt(0) !== '.' || dotOk) { + var m + if (negate && !prefix) { + m = !e.match(pn) + } else { + m = e.match(pn) + } + if (m) + matchedEntries.push(e) + } + } + + //console.error('prd2', prefix, entries, remain[0]._glob, matchedEntries) + + var len = matchedEntries.length + // If there are no matched entries, then nothing matches. + if (len === 0) + return cb() + + // if this is the last remaining pattern bit, then no need for + // an additional stat *unless* the user has specified mark or + // stat explicitly. We know they exist, since readdir returned + // them. + + if (remain.length === 1 && !this.mark && !this.stat) { + if (!this.matches[index]) + this.matches[index] = Object.create(null) + + for (var i = 0; i < len; i ++) { + var e = matchedEntries[i] + if (prefix) { + if (prefix !== '/') + e = prefix + '/' + e + else + e = prefix + e + } + + if (e.charAt(0) === '/' && !this.nomount) { + e = path.join(this.root, e) + } + this._emitMatch(index, e) + } + // This was the last one, and no stats were needed + return cb() + } + + // now test all matched entries as stand-ins for that part + // of the pattern. + remain.shift() + for (var i = 0; i < len; i ++) { + var e = matchedEntries[i] + var newPattern + if (prefix) { + if (prefix !== '/') + e = prefix + '/' + e + else + e = prefix + e + } + this._process([e].concat(remain), index, inGlobStar, cb) + } + cb() +} + +Glob.prototype._emitMatch = function (index, e) { + if (this.aborted) + return + + if (this.matches[index][e]) + return + + if (isIgnored(this, e)) + return + + if (this.paused) { + this._emitQueue.push([index, e]) + return + } + + var abs = this._makeAbs(e) + + if (this.nodir) { + var c = this.cache[abs] + if (c === 'DIR' || Array.isArray(c)) + return + } + + if (this.mark) + e = this._mark(e) + + this.matches[index][e] = true + + var st = this.statCache[abs] + if (st) + this.emit('stat', e, st) + + this.emit('match', e) +} + +Glob.prototype._readdirInGlobStar = function (abs, cb) { + if (this.aborted) + return + + // follow all symlinked directories forever + // just proceed as if this is a non-globstar situation + if (this.follow) + return this._readdir(abs, false, cb) + + var lstatkey = 'lstat\0' + abs + var self = this + var lstatcb = inflight(lstatkey, lstatcb_) + + if (lstatcb) + fs.lstat(abs, lstatcb) + + function lstatcb_ (er, lstat) { + if (er) + return cb() + + var isSym = lstat.isSymbolicLink() + self.symlinks[abs] = isSym + + // If it's not a symlink or a dir, then it's definitely a regular file. + // don't bother doing a readdir in that case. + if (!isSym && !lstat.isDirectory()) { + self.cache[abs] = 'FILE' + cb() + } else + self._readdir(abs, false, cb) + } +} + +Glob.prototype._readdir = function (abs, inGlobStar, cb) { + if (this.aborted) + return + + cb = inflight('readdir\0'+abs+'\0'+inGlobStar, cb) + if (!cb) + return + + //console.error('RD %j %j', +inGlobStar, abs) + if (inGlobStar && !ownProp(this.symlinks, abs)) + return this._readdirInGlobStar(abs, cb) + + if (ownProp(this.cache, abs)) { + var c = this.cache[abs] + if (!c || c === 'FILE') + return cb() + + if (Array.isArray(c)) + return cb(null, c) + } + + var self = this + fs.readdir(abs, readdirCb(this, abs, cb)) +} + +function readdirCb (self, abs, cb) { + return function (er, entries) { + if (er) + self._readdirError(abs, er, cb) + else + self._readdirEntries(abs, entries, cb) + } +} + +Glob.prototype._readdirEntries = function (abs, entries, cb) { + if (this.aborted) + return + + // if we haven't asked to stat everything, then just + // assume that everything in there exists, so we can avoid + // having to stat it a second time. + if (!this.mark && !this.stat) { + for (var i = 0; i < entries.length; i ++) { + var e = entries[i] + if (abs === '/') + e = abs + e + else + e = abs + '/' + e + this.cache[e] = true + } + } + + this.cache[abs] = entries + return cb(null, entries) +} + +Glob.prototype._readdirError = function (f, er, cb) { + if (this.aborted) + return + + // handle errors, and cache the information + switch (er.code) { + case 'ENOTSUP': // https://github.com/isaacs/node-glob/issues/205 + case 'ENOTDIR': // totally normal. means it *does* exist. + this.cache[this._makeAbs(f)] = 'FILE' + break + + case 'ENOENT': // not terribly unusual + case 'ELOOP': + case 'ENAMETOOLONG': + case 'UNKNOWN': + this.cache[this._makeAbs(f)] = false + break + + default: // some unusual error. Treat as failure. + this.cache[this._makeAbs(f)] = false + if (this.strict) { + this.emit('error', er) + // If the error is handled, then we abort + // if not, we threw out of here + this.abort() + } + if (!this.silent) + console.error('glob error', er) + break + } + + return cb() +} + +Glob.prototype._processGlobStar = function (prefix, read, abs, remain, index, inGlobStar, cb) { + var self = this + this._readdir(abs, inGlobStar, function (er, entries) { + self._processGlobStar2(prefix, read, abs, remain, index, inGlobStar, entries, cb) + }) +} + + +Glob.prototype._processGlobStar2 = function (prefix, read, abs, remain, index, inGlobStar, entries, cb) { + //console.error('pgs2', prefix, remain[0], entries) + + // no entries means not a dir, so it can never have matches + // foo.txt/** doesn't match foo.txt + if (!entries) + return cb() + + // test without the globstar, and with every child both below + // and replacing the globstar. + var remainWithoutGlobStar = remain.slice(1) + var gspref = prefix ? [ prefix ] : [] + var noGlobStar = gspref.concat(remainWithoutGlobStar) + + // the noGlobStar pattern exits the inGlobStar state + this._process(noGlobStar, index, false, cb) + + var isSym = this.symlinks[abs] + var len = entries.length + + // If it's a symlink, and we're in a globstar, then stop + if (isSym && inGlobStar) + return cb() + + for (var i = 0; i < len; i++) { + var e = entries[i] + if (e.charAt(0) === '.' && !this.dot) + continue + + // these two cases enter the inGlobStar state + var instead = gspref.concat(entries[i], remainWithoutGlobStar) + this._process(instead, index, true, cb) + + var below = gspref.concat(entries[i], remain) + this._process(below, index, true, cb) + } + + cb() +} + +Glob.prototype._processSimple = function (prefix, index, cb) { + // XXX review this. Shouldn't it be doing the mounting etc + // before doing stat? kinda weird? + var self = this + this._stat(prefix, function (er, exists) { + self._processSimple2(prefix, index, er, exists, cb) + }) +} +Glob.prototype._processSimple2 = function (prefix, index, er, exists, cb) { + + //console.error('ps2', prefix, exists) + + if (!this.matches[index]) + this.matches[index] = Object.create(null) + + // If it doesn't exist, then just mark the lack of results + if (!exists) + return cb() + + if (prefix && isAbsolute(prefix) && !this.nomount) { + var trail = /[\/\\]$/.test(prefix) + if (prefix.charAt(0) === '/') { + prefix = path.join(this.root, prefix) + } else { + prefix = path.resolve(this.root, prefix) + if (trail) + prefix += '/' + } + } + + if (process.platform === 'win32') + prefix = prefix.replace(/\\/g, '/') + + // Mark this as a match + this._emitMatch(index, prefix) + cb() +} + +// Returns either 'DIR', 'FILE', or false +Glob.prototype._stat = function (f, cb) { + var abs = this._makeAbs(f) + var needDir = f.slice(-1) === '/' + + if (f.length > this.maxLength) + return cb() + + if (!this.stat && ownProp(this.cache, abs)) { + var c = this.cache[abs] + + if (Array.isArray(c)) + c = 'DIR' + + // It exists, but maybe not how we need it + if (!needDir || c === 'DIR') + return cb(null, c) + + if (needDir && c === 'FILE') + return cb() + + // otherwise we have to stat, because maybe c=true + // if we know it exists, but not what it is. + } + + var exists + var stat = this.statCache[abs] + if (stat !== undefined) { + if (stat === false) + return cb(null, stat) + else { + var type = stat.isDirectory() ? 'DIR' : 'FILE' + if (needDir && type === 'FILE') + return cb() + else + return cb(null, type, stat) + } + } + + var self = this + var statcb = inflight('stat\0' + abs, lstatcb_) + if (statcb) + fs.lstat(abs, statcb) + + function lstatcb_ (er, lstat) { + if (lstat && lstat.isSymbolicLink()) { + // If it's a symlink, then treat it as the target, unless + // the target does not exist, then treat it as a file. + return fs.stat(abs, function (er, stat) { + if (er) + self._stat2(f, abs, null, lstat, cb) + else + self._stat2(f, abs, er, stat, cb) + }) + } else { + self._stat2(f, abs, er, lstat, cb) + } + } +} + +Glob.prototype._stat2 = function (f, abs, er, stat, cb) { + if (er) { + this.statCache[abs] = false + return cb() + } + + var needDir = f.slice(-1) === '/' + this.statCache[abs] = stat + + if (abs.slice(-1) === '/' && !stat.isDirectory()) + return cb(null, false, stat) + + var c = stat.isDirectory() ? 'DIR' : 'FILE' + this.cache[abs] = this.cache[abs] || c + + if (needDir && c !== 'DIR') + return cb() + + return cb(null, c, stat) +} + +}).call(this,require('_process')) +},{"./common.js":15,"./sync.js":17,"_process":24,"assert":9,"events":14,"fs":12,"inflight":18,"inherits":19,"minimatch":20,"once":21,"path":22,"path-is-absolute":23,"util":28}],17:[function(require,module,exports){ +(function (process){ +module.exports = globSync +globSync.GlobSync = GlobSync + +var fs = require('fs') +var minimatch = require('minimatch') +var Minimatch = minimatch.Minimatch +var Glob = require('./glob.js').Glob +var util = require('util') +var path = require('path') +var assert = require('assert') +var isAbsolute = require('path-is-absolute') +var common = require('./common.js') +var alphasort = common.alphasort +var alphasorti = common.alphasorti +var setopts = common.setopts +var ownProp = common.ownProp +var childrenIgnored = common.childrenIgnored + +function globSync (pattern, options) { + if (typeof options === 'function' || arguments.length === 3) + throw new TypeError('callback provided to sync glob\n'+ + 'See: https://github.com/isaacs/node-glob/issues/167') + + return new GlobSync(pattern, options).found +} + +function GlobSync (pattern, options) { + if (!pattern) + throw new Error('must provide pattern') + + if (typeof options === 'function' || arguments.length === 3) + throw new TypeError('callback provided to sync glob\n'+ + 'See: https://github.com/isaacs/node-glob/issues/167') + + if (!(this instanceof GlobSync)) + return new GlobSync(pattern, options) + + setopts(this, pattern, options) + + if (this.noprocess) + return this + + var n = this.minimatch.set.length + this.matches = new Array(n) + for (var i = 0; i < n; i ++) { + this._process(this.minimatch.set[i], i, false) + } + this._finish() +} + +GlobSync.prototype._finish = function () { + assert(this instanceof GlobSync) + if (this.realpath) { + var self = this + this.matches.forEach(function (matchset, index) { + var set = self.matches[index] = Object.create(null) + for (var p in matchset) { + try { + p = self._makeAbs(p) + var real = fs.realpathSync(p, self.realpathCache) + set[real] = true + } catch (er) { + if (er.syscall === 'stat') + set[self._makeAbs(p)] = true + else + throw er + } + } + }) + } + common.finish(this) +} + + +GlobSync.prototype._process = function (pattern, index, inGlobStar) { + assert(this instanceof GlobSync) + + // Get the first [n] parts of pattern that are all strings. + var n = 0 + while (typeof pattern[n] === 'string') { + n ++ + } + // now n is the index of the first one that is *not* a string. + + // See if there's anything else + var prefix + switch (n) { + // if not, then this is rather simple + case pattern.length: + this._processSimple(pattern.join('/'), index) + return + + case 0: + // pattern *starts* with some non-trivial item. + // going to readdir(cwd), but not include the prefix in matches. + prefix = null + break + + default: + // pattern has some string bits in the front. + // whatever it starts with, whether that's 'absolute' like /foo/bar, + // or 'relative' like '../baz' + prefix = pattern.slice(0, n).join('/') + break + } + + var remain = pattern.slice(n) + + // get the list of entries. + var read + if (prefix === null) + read = '.' + else if (isAbsolute(prefix) || isAbsolute(pattern.join('/'))) { + if (!prefix || !isAbsolute(prefix)) + prefix = '/' + prefix + read = prefix + } else + read = prefix + + var abs = this._makeAbs(read) + + //if ignored, skip processing + if (childrenIgnored(this, read)) + return + + var isGlobStar = remain[0] === minimatch.GLOBSTAR + if (isGlobStar) + this._processGlobStar(prefix, read, abs, remain, index, inGlobStar) + else + this._processReaddir(prefix, read, abs, remain, index, inGlobStar) +} + + +GlobSync.prototype._processReaddir = function (prefix, read, abs, remain, index, inGlobStar) { + var entries = this._readdir(abs, inGlobStar) + + // if the abs isn't a dir, then nothing can match! + if (!entries) + return + + // It will only match dot entries if it starts with a dot, or if + // dot is set. Stuff like @(.foo|.bar) isn't allowed. + var pn = remain[0] + var negate = !!this.minimatch.negate + var rawGlob = pn._glob + var dotOk = this.dot || rawGlob.charAt(0) === '.' + + var matchedEntries = [] + for (var i = 0; i < entries.length; i++) { + var e = entries[i] + if (e.charAt(0) !== '.' || dotOk) { + var m + if (negate && !prefix) { + m = !e.match(pn) + } else { + m = e.match(pn) + } + if (m) + matchedEntries.push(e) + } + } + + var len = matchedEntries.length + // If there are no matched entries, then nothing matches. + if (len === 0) + return + + // if this is the last remaining pattern bit, then no need for + // an additional stat *unless* the user has specified mark or + // stat explicitly. We know they exist, since readdir returned + // them. + + if (remain.length === 1 && !this.mark && !this.stat) { + if (!this.matches[index]) + this.matches[index] = Object.create(null) + + for (var i = 0; i < len; i ++) { + var e = matchedEntries[i] + if (prefix) { + if (prefix.slice(-1) !== '/') + e = prefix + '/' + e + else + e = prefix + e + } + + if (e.charAt(0) === '/' && !this.nomount) { + e = path.join(this.root, e) + } + this.matches[index][e] = true + } + // This was the last one, and no stats were needed + return + } + + // now test all matched entries as stand-ins for that part + // of the pattern. + remain.shift() + for (var i = 0; i < len; i ++) { + var e = matchedEntries[i] + var newPattern + if (prefix) + newPattern = [prefix, e] + else + newPattern = [e] + this._process(newPattern.concat(remain), index, inGlobStar) + } +} + + +GlobSync.prototype._emitMatch = function (index, e) { + var abs = this._makeAbs(e) + if (this.mark) + e = this._mark(e) + + if (this.matches[index][e]) + return + + if (this.nodir) { + var c = this.cache[this._makeAbs(e)] + if (c === 'DIR' || Array.isArray(c)) + return + } + + this.matches[index][e] = true + if (this.stat) + this._stat(e) +} + + +GlobSync.prototype._readdirInGlobStar = function (abs) { + // follow all symlinked directories forever + // just proceed as if this is a non-globstar situation + if (this.follow) + return this._readdir(abs, false) + + var entries + var lstat + var stat + try { + lstat = fs.lstatSync(abs) + } catch (er) { + // lstat failed, doesn't exist + return null + } + + var isSym = lstat.isSymbolicLink() + this.symlinks[abs] = isSym + + // If it's not a symlink or a dir, then it's definitely a regular file. + // don't bother doing a readdir in that case. + if (!isSym && !lstat.isDirectory()) + this.cache[abs] = 'FILE' + else + entries = this._readdir(abs, false) + + return entries +} + +GlobSync.prototype._readdir = function (abs, inGlobStar) { + var entries + + if (inGlobStar && !ownProp(this.symlinks, abs)) + return this._readdirInGlobStar(abs) + + if (ownProp(this.cache, abs)) { + var c = this.cache[abs] + if (!c || c === 'FILE') + return null + + if (Array.isArray(c)) + return c + } + + try { + return this._readdirEntries(abs, fs.readdirSync(abs)) + } catch (er) { + this._readdirError(abs, er) + return null + } +} + +GlobSync.prototype._readdirEntries = function (abs, entries) { + // if we haven't asked to stat everything, then just + // assume that everything in there exists, so we can avoid + // having to stat it a second time. + if (!this.mark && !this.stat) { + for (var i = 0; i < entries.length; i ++) { + var e = entries[i] + if (abs === '/') + e = abs + e + else + e = abs + '/' + e + this.cache[e] = true + } + } + + this.cache[abs] = entries + + // mark and cache dir-ness + return entries +} + +GlobSync.prototype._readdirError = function (f, er) { + // handle errors, and cache the information + switch (er.code) { + case 'ENOTSUP': // https://github.com/isaacs/node-glob/issues/205 + case 'ENOTDIR': // totally normal. means it *does* exist. + this.cache[this._makeAbs(f)] = 'FILE' + break + + case 'ENOENT': // not terribly unusual + case 'ELOOP': + case 'ENAMETOOLONG': + case 'UNKNOWN': + this.cache[this._makeAbs(f)] = false + break + + default: // some unusual error. Treat as failure. + this.cache[this._makeAbs(f)] = false + if (this.strict) + throw er + if (!this.silent) + console.error('glob error', er) + break + } +} + +GlobSync.prototype._processGlobStar = function (prefix, read, abs, remain, index, inGlobStar) { + + var entries = this._readdir(abs, inGlobStar) + + // no entries means not a dir, so it can never have matches + // foo.txt/** doesn't match foo.txt + if (!entries) + return + + // test without the globstar, and with every child both below + // and replacing the globstar. + var remainWithoutGlobStar = remain.slice(1) + var gspref = prefix ? [ prefix ] : [] + var noGlobStar = gspref.concat(remainWithoutGlobStar) + + // the noGlobStar pattern exits the inGlobStar state + this._process(noGlobStar, index, false) + + var len = entries.length + var isSym = this.symlinks[abs] + + // If it's a symlink, and we're in a globstar, then stop + if (isSym && inGlobStar) + return + + for (var i = 0; i < len; i++) { + var e = entries[i] + if (e.charAt(0) === '.' && !this.dot) + continue + + // these two cases enter the inGlobStar state + var instead = gspref.concat(entries[i], remainWithoutGlobStar) + this._process(instead, index, true) + + var below = gspref.concat(entries[i], remain) + this._process(below, index, true) + } +} + +GlobSync.prototype._processSimple = function (prefix, index) { + // XXX review this. Shouldn't it be doing the mounting etc + // before doing stat? kinda weird? + var exists = this._stat(prefix) + + if (!this.matches[index]) + this.matches[index] = Object.create(null) + + // If it doesn't exist, then just mark the lack of results + if (!exists) + return + + if (prefix && isAbsolute(prefix) && !this.nomount) { + var trail = /[\/\\]$/.test(prefix) + if (prefix.charAt(0) === '/') { + prefix = path.join(this.root, prefix) + } else { + prefix = path.resolve(this.root, prefix) + if (trail) + prefix += '/' + } + } + + if (process.platform === 'win32') + prefix = prefix.replace(/\\/g, '/') + + // Mark this as a match + this.matches[index][prefix] = true +} + +// Returns either 'DIR', 'FILE', or false +GlobSync.prototype._stat = function (f) { + var abs = this._makeAbs(f) + var needDir = f.slice(-1) === '/' + + if (f.length > this.maxLength) + return false + + if (!this.stat && ownProp(this.cache, abs)) { + var c = this.cache[abs] + + if (Array.isArray(c)) + c = 'DIR' + + // It exists, but maybe not how we need it + if (!needDir || c === 'DIR') + return c + + if (needDir && c === 'FILE') + return false + + // otherwise we have to stat, because maybe c=true + // if we know it exists, but not what it is. + } + + var exists + var stat = this.statCache[abs] + if (!stat) { + var lstat + try { + lstat = fs.lstatSync(abs) + } catch (er) { + return false + } + + if (lstat.isSymbolicLink()) { + try { + stat = fs.statSync(abs) + } catch (er) { + stat = lstat + } + } else { + stat = lstat + } + } + + this.statCache[abs] = stat + + var c = stat.isDirectory() ? 'DIR' : 'FILE' + this.cache[abs] = this.cache[abs] || c + + if (needDir && c !== 'DIR') + return false + + return c +} + +GlobSync.prototype._mark = function (p) { + return common.mark(this, p) +} + +GlobSync.prototype._makeAbs = function (f) { + return common.makeAbs(this, f) +} + +}).call(this,require('_process')) +},{"./common.js":15,"./glob.js":16,"_process":24,"assert":9,"fs":12,"minimatch":20,"path":22,"path-is-absolute":23,"util":28}],18:[function(require,module,exports){ +(function (process){ +var wrappy = require('wrappy') +var reqs = Object.create(null) +var once = require('once') + +module.exports = wrappy(inflight) + +function inflight (key, cb) { + if (reqs[key]) { + reqs[key].push(cb) + return null + } else { + reqs[key] = [cb] + return makeres(key) + } +} + +function makeres (key) { + return once(function RES () { + var cbs = reqs[key] + var len = cbs.length + var args = slice(arguments) + + // XXX It's somewhat ambiguous whether a new callback added in this + // pass should be queued for later execution if something in the + // list of callbacks throws, or if it should just be discarded. + // However, it's such an edge case that it hardly matters, and either + // choice is likely as surprising as the other. + // As it happens, we do go ahead and schedule it for later execution. + try { + for (var i = 0; i < len; i++) { + cbs[i].apply(null, args) + } + } finally { + if (cbs.length > len) { + // added more in the interim. + // de-zalgo, just in case, but don't call again. + cbs.splice(0, len) + process.nextTick(function () { + RES.apply(null, args) + }) + } else { + delete reqs[key] + } + } + }) +} + +function slice (args) { + var length = args.length + var array = [] + + for (var i = 0; i < length; i++) array[i] = args[i] + return array +} + +}).call(this,require('_process')) +},{"_process":24,"once":21,"wrappy":29}],19:[function(require,module,exports){ +if (typeof Object.create === 'function') { + // implementation from standard node.js 'util' module + module.exports = function inherits(ctor, superCtor) { + ctor.super_ = superCtor + ctor.prototype = Object.create(superCtor.prototype, { + constructor: { + value: ctor, + enumerable: false, + writable: true, + configurable: true + } + }); + }; +} else { + // old school shim for old browsers + module.exports = function inherits(ctor, superCtor) { + ctor.super_ = superCtor + var TempCtor = function () {} + TempCtor.prototype = superCtor.prototype + ctor.prototype = new TempCtor() + ctor.prototype.constructor = ctor + } +} + +},{}],20:[function(require,module,exports){ +module.exports = minimatch +minimatch.Minimatch = Minimatch + +var path = { sep: '/' } +try { + path = require('path') +} catch (er) {} + +var GLOBSTAR = minimatch.GLOBSTAR = Minimatch.GLOBSTAR = {} +var expand = require('brace-expansion') + +var plTypes = { + '!': { open: '(?:(?!(?:', close: '))[^/]*?)'}, + '?': { open: '(?:', close: ')?' }, + '+': { open: '(?:', close: ')+' }, + '*': { open: '(?:', close: ')*' }, + '@': { open: '(?:', close: ')' } +} + +// any single thing other than / +// don't need to escape / when using new RegExp() +var qmark = '[^/]' + +// * => any number of characters +var star = qmark + '*?' + +// ** when dots are allowed. Anything goes, except .. and . +// not (^ or / followed by one or two dots followed by $ or /), +// followed by anything, any number of times. +var twoStarDot = '(?:(?!(?:\\\/|^)(?:\\.{1,2})($|\\\/)).)*?' + +// not a ^ or / followed by a dot, +// followed by anything, any number of times. +var twoStarNoDot = '(?:(?!(?:\\\/|^)\\.).)*?' + +// characters that need to be escaped in RegExp. +var reSpecials = charSet('().*{}+?[]^$\\!') + +// "abc" -> { a:true, b:true, c:true } +function charSet (s) { + return s.split('').reduce(function (set, c) { + set[c] = true + return set + }, {}) +} + +// normalizes slashes. +var slashSplit = /\/+/ + +minimatch.filter = filter +function filter (pattern, options) { + options = options || {} + return function (p, i, list) { + return minimatch(p, pattern, options) + } +} + +function ext (a, b) { + a = a || {} + b = b || {} + var t = {} + Object.keys(b).forEach(function (k) { + t[k] = b[k] + }) + Object.keys(a).forEach(function (k) { + t[k] = a[k] + }) + return t +} + +minimatch.defaults = function (def) { + if (!def || !Object.keys(def).length) return minimatch + + var orig = minimatch + + var m = function minimatch (p, pattern, options) { + return orig.minimatch(p, pattern, ext(def, options)) + } + + m.Minimatch = function Minimatch (pattern, options) { + return new orig.Minimatch(pattern, ext(def, options)) + } + + return m +} + +Minimatch.defaults = function (def) { + if (!def || !Object.keys(def).length) return Minimatch + return minimatch.defaults(def).Minimatch +} + +function minimatch (p, pattern, options) { + if (typeof pattern !== 'string') { + throw new TypeError('glob pattern string required') + } + + if (!options) options = {} + + // shortcut: comments match nothing. + if (!options.nocomment && pattern.charAt(0) === '#') { + return false + } + + // "" only matches "" + if (pattern.trim() === '') return p === '' + + return new Minimatch(pattern, options).match(p) +} + +function Minimatch (pattern, options) { + if (!(this instanceof Minimatch)) { + return new Minimatch(pattern, options) + } + + if (typeof pattern !== 'string') { + throw new TypeError('glob pattern string required') + } + + if (!options) options = {} + pattern = pattern.trim() + + // windows support: need to use /, not \ + if (path.sep !== '/') { + pattern = pattern.split(path.sep).join('/') + } + + this.options = options + this.set = [] + this.pattern = pattern + this.regexp = null + this.negate = false + this.comment = false + this.empty = false + + // make the set of regexps etc. + this.make() +} + +Minimatch.prototype.debug = function () {} + +Minimatch.prototype.make = make +function make () { + // don't do it more than once. + if (this._made) return + + var pattern = this.pattern + var options = this.options + + // empty patterns and comments match nothing. + if (!options.nocomment && pattern.charAt(0) === '#') { + this.comment = true + return + } + if (!pattern) { + this.empty = true + return + } + + // step 1: figure out negation, etc. + this.parseNegate() + + // step 2: expand braces + var set = this.globSet = this.braceExpand() + + if (options.debug) this.debug = console.error + + this.debug(this.pattern, set) + + // step 3: now we have a set, so turn each one into a series of path-portion + // matching patterns. + // These will be regexps, except in the case of "**", which is + // set to the GLOBSTAR object for globstar behavior, + // and will not contain any / characters + set = this.globParts = set.map(function (s) { + return s.split(slashSplit) + }) + + this.debug(this.pattern, set) + + // glob --> regexps + set = set.map(function (s, si, set) { + return s.map(this.parse, this) + }, this) + + this.debug(this.pattern, set) + + // filter out everything that didn't compile properly. + set = set.filter(function (s) { + return s.indexOf(false) === -1 + }) + + this.debug(this.pattern, set) + + this.set = set +} + +Minimatch.prototype.parseNegate = parseNegate +function parseNegate () { + var pattern = this.pattern + var negate = false + var options = this.options + var negateOffset = 0 + + if (options.nonegate) return + + for (var i = 0, l = pattern.length + ; i < l && pattern.charAt(i) === '!' + ; i++) { + negate = !negate + negateOffset++ + } + + if (negateOffset) this.pattern = pattern.substr(negateOffset) + this.negate = negate +} + +// Brace expansion: +// a{b,c}d -> abd acd +// a{b,}c -> abc ac +// a{0..3}d -> a0d a1d a2d a3d +// a{b,c{d,e}f}g -> abg acdfg acefg +// a{b,c}d{e,f}g -> abdeg acdeg abdeg abdfg +// +// Invalid sets are not expanded. +// a{2..}b -> a{2..}b +// a{b}c -> a{b}c +minimatch.braceExpand = function (pattern, options) { + return braceExpand(pattern, options) +} + +Minimatch.prototype.braceExpand = braceExpand + +function braceExpand (pattern, options) { + if (!options) { + if (this instanceof Minimatch) { + options = this.options + } else { + options = {} + } + } + + pattern = typeof pattern === 'undefined' + ? this.pattern : pattern + + if (typeof pattern === 'undefined') { + throw new TypeError('undefined pattern') + } + + if (options.nobrace || + !pattern.match(/\{.*\}/)) { + // shortcut. no need to expand. + return [pattern] + } + + return expand(pattern) +} + +// parse a component of the expanded set. +// At this point, no pattern may contain "/" in it +// so we're going to return a 2d array, where each entry is the full +// pattern, split on '/', and then turned into a regular expression. +// A regexp is made at the end which joins each array with an +// escaped /, and another full one which joins each regexp with |. +// +// Following the lead of Bash 4.1, note that "**" only has special meaning +// when it is the *only* thing in a path portion. Otherwise, any series +// of * is equivalent to a single *. Globstar behavior is enabled by +// default, and can be disabled by setting options.noglobstar. +Minimatch.prototype.parse = parse +var SUBPARSE = {} +function parse (pattern, isSub) { + if (pattern.length > 1024 * 64) { + throw new TypeError('pattern is too long') + } + + var options = this.options + + // shortcuts + if (!options.noglobstar && pattern === '**') return GLOBSTAR + if (pattern === '') return '' + + var re = '' + var hasMagic = !!options.nocase + var escaping = false + // ? => one single character + var patternListStack = [] + var negativeLists = [] + var stateChar + var inClass = false + var reClassStart = -1 + var classStart = -1 + // . and .. never match anything that doesn't start with ., + // even when options.dot is set. + var patternStart = pattern.charAt(0) === '.' ? '' // anything + // not (start or / followed by . or .. followed by / or end) + : options.dot ? '(?!(?:^|\\\/)\\.{1,2}(?:$|\\\/))' + : '(?!\\.)' + var self = this + + function clearStateChar () { + if (stateChar) { + // we had some state-tracking character + // that wasn't consumed by this pass. + switch (stateChar) { + case '*': + re += star + hasMagic = true + break + case '?': + re += qmark + hasMagic = true + break + default: + re += '\\' + stateChar + break + } + self.debug('clearStateChar %j %j', stateChar, re) + stateChar = false + } + } + + for (var i = 0, len = pattern.length, c + ; (i < len) && (c = pattern.charAt(i)) + ; i++) { + this.debug('%s\t%s %s %j', pattern, i, re, c) + + // skip over any that are escaped. + if (escaping && reSpecials[c]) { + re += '\\' + c + escaping = false + continue + } + + switch (c) { + case '/': + // completely not allowed, even escaped. + // Should already be path-split by now. + return false + + case '\\': + clearStateChar() + escaping = true + continue + + // the various stateChar values + // for the "extglob" stuff. + case '?': + case '*': + case '+': + case '@': + case '!': + this.debug('%s\t%s %s %j <-- stateChar', pattern, i, re, c) + + // all of those are literals inside a class, except that + // the glob [!a] means [^a] in regexp + if (inClass) { + this.debug(' in class') + if (c === '!' && i === classStart + 1) c = '^' + re += c + continue + } + + // if we already have a stateChar, then it means + // that there was something like ** or +? in there. + // Handle the stateChar, then proceed with this one. + self.debug('call clearStateChar %j', stateChar) + clearStateChar() + stateChar = c + // if extglob is disabled, then +(asdf|foo) isn't a thing. + // just clear the statechar *now*, rather than even diving into + // the patternList stuff. + if (options.noext) clearStateChar() + continue + + case '(': + if (inClass) { + re += '(' + continue + } + + if (!stateChar) { + re += '\\(' + continue + } + + patternListStack.push({ + type: stateChar, + start: i - 1, + reStart: re.length, + open: plTypes[stateChar].open, + close: plTypes[stateChar].close + }) + // negation is (?:(?!js)[^/]*) + re += stateChar === '!' ? '(?:(?!(?:' : '(?:' + this.debug('plType %j %j', stateChar, re) + stateChar = false + continue + + case ')': + if (inClass || !patternListStack.length) { + re += '\\)' + continue + } + + clearStateChar() + hasMagic = true + var pl = patternListStack.pop() + // negation is (?:(?!js)[^/]*) + // The others are (?:) + re += pl.close + if (pl.type === '!') { + negativeLists.push(pl) + } + pl.reEnd = re.length + continue + + case '|': + if (inClass || !patternListStack.length || escaping) { + re += '\\|' + escaping = false + continue + } + + clearStateChar() + re += '|' + continue + + // these are mostly the same in regexp and glob + case '[': + // swallow any state-tracking char before the [ + clearStateChar() + + if (inClass) { + re += '\\' + c + continue + } + + inClass = true + classStart = i + reClassStart = re.length + re += c + continue + + case ']': + // a right bracket shall lose its special + // meaning and represent itself in + // a bracket expression if it occurs + // first in the list. -- POSIX.2 2.8.3.2 + if (i === classStart + 1 || !inClass) { + re += '\\' + c + escaping = false + continue + } + + // handle the case where we left a class open. + // "[z-a]" is valid, equivalent to "\[z-a\]" + if (inClass) { + // split where the last [ was, make sure we don't have + // an invalid re. if so, re-walk the contents of the + // would-be class to re-translate any characters that + // were passed through as-is + // TODO: It would probably be faster to determine this + // without a try/catch and a new RegExp, but it's tricky + // to do safely. For now, this is safe and works. + var cs = pattern.substring(classStart + 1, i) + try { + RegExp('[' + cs + ']') + } catch (er) { + // not a valid class! + var sp = this.parse(cs, SUBPARSE) + re = re.substr(0, reClassStart) + '\\[' + sp[0] + '\\]' + hasMagic = hasMagic || sp[1] + inClass = false + continue + } + } + + // finish up the class. + hasMagic = true + inClass = false + re += c + continue + + default: + // swallow any state char that wasn't consumed + clearStateChar() + + if (escaping) { + // no need + escaping = false + } else if (reSpecials[c] + && !(c === '^' && inClass)) { + re += '\\' + } + + re += c + + } // switch + } // for + + // handle the case where we left a class open. + // "[abc" is valid, equivalent to "\[abc" + if (inClass) { + // split where the last [ was, and escape it + // this is a huge pita. We now have to re-walk + // the contents of the would-be class to re-translate + // any characters that were passed through as-is + cs = pattern.substr(classStart + 1) + sp = this.parse(cs, SUBPARSE) + re = re.substr(0, reClassStart) + '\\[' + sp[0] + hasMagic = hasMagic || sp[1] + } + + // handle the case where we had a +( thing at the *end* + // of the pattern. + // each pattern list stack adds 3 chars, and we need to go through + // and escape any | chars that were passed through as-is for the regexp. + // Go through and escape them, taking care not to double-escape any + // | chars that were already escaped. + for (pl = patternListStack.pop(); pl; pl = patternListStack.pop()) { + var tail = re.slice(pl.reStart + pl.open.length) + this.debug('setting tail', re, pl) + // maybe some even number of \, then maybe 1 \, followed by a | + tail = tail.replace(/((?:\\{2}){0,64})(\\?)\|/g, function (_, $1, $2) { + if (!$2) { + // the | isn't already escaped, so escape it. + $2 = '\\' + } + + // need to escape all those slashes *again*, without escaping the + // one that we need for escaping the | character. As it works out, + // escaping an even number of slashes can be done by simply repeating + // it exactly after itself. That's why this trick works. + // + // I am sorry that you have to see this. + return $1 + $1 + $2 + '|' + }) + + this.debug('tail=%j\n %s', tail, tail, pl, re) + var t = pl.type === '*' ? star + : pl.type === '?' ? qmark + : '\\' + pl.type + + hasMagic = true + re = re.slice(0, pl.reStart) + t + '\\(' + tail + } + + // handle trailing things that only matter at the very end. + clearStateChar() + if (escaping) { + // trailing \\ + re += '\\\\' + } + + // only need to apply the nodot start if the re starts with + // something that could conceivably capture a dot + var addPatternStart = false + switch (re.charAt(0)) { + case '.': + case '[': + case '(': addPatternStart = true + } + + // Hack to work around lack of negative lookbehind in JS + // A pattern like: *.!(x).!(y|z) needs to ensure that a name + // like 'a.xyz.yz' doesn't match. So, the first negative + // lookahead, has to look ALL the way ahead, to the end of + // the pattern. + for (var n = negativeLists.length - 1; n > -1; n--) { + var nl = negativeLists[n] + + var nlBefore = re.slice(0, nl.reStart) + var nlFirst = re.slice(nl.reStart, nl.reEnd - 8) + var nlLast = re.slice(nl.reEnd - 8, nl.reEnd) + var nlAfter = re.slice(nl.reEnd) + + nlLast += nlAfter + + // Handle nested stuff like *(*.js|!(*.json)), where open parens + // mean that we should *not* include the ) in the bit that is considered + // "after" the negated section. + var openParensBefore = nlBefore.split('(').length - 1 + var cleanAfter = nlAfter + for (i = 0; i < openParensBefore; i++) { + cleanAfter = cleanAfter.replace(/\)[+*?]?/, '') + } + nlAfter = cleanAfter + + var dollar = '' + if (nlAfter === '' && isSub !== SUBPARSE) { + dollar = '$' + } + var newRe = nlBefore + nlFirst + nlAfter + dollar + nlLast + re = newRe + } + + // if the re is not "" at this point, then we need to make sure + // it doesn't match against an empty path part. + // Otherwise a/* will match a/, which it should not. + if (re !== '' && hasMagic) { + re = '(?=.)' + re + } + + if (addPatternStart) { + re = patternStart + re + } + + // parsing just a piece of a larger pattern. + if (isSub === SUBPARSE) { + return [re, hasMagic] + } + + // skip the regexp for non-magical patterns + // unescape anything in it, though, so that it'll be + // an exact match against a file etc. + if (!hasMagic) { + return globUnescape(pattern) + } + + var flags = options.nocase ? 'i' : '' + try { + var regExp = new RegExp('^' + re + '$', flags) + } catch (er) { + // If it was an invalid regular expression, then it can't match + // anything. This trick looks for a character after the end of + // the string, which is of course impossible, except in multi-line + // mode, but it's not a /m regex. + return new RegExp('$.') + } + + regExp._glob = pattern + regExp._src = re + + return regExp +} + +minimatch.makeRe = function (pattern, options) { + return new Minimatch(pattern, options || {}).makeRe() +} + +Minimatch.prototype.makeRe = makeRe +function makeRe () { + if (this.regexp || this.regexp === false) return this.regexp + + // at this point, this.set is a 2d array of partial + // pattern strings, or "**". + // + // It's better to use .match(). This function shouldn't + // be used, really, but it's pretty convenient sometimes, + // when you just want to work with a regex. + var set = this.set + + if (!set.length) { + this.regexp = false + return this.regexp + } + var options = this.options + + var twoStar = options.noglobstar ? star + : options.dot ? twoStarDot + : twoStarNoDot + var flags = options.nocase ? 'i' : '' + + var re = set.map(function (pattern) { + return pattern.map(function (p) { + return (p === GLOBSTAR) ? twoStar + : (typeof p === 'string') ? regExpEscape(p) + : p._src + }).join('\\\/') + }).join('|') + + // must match entire pattern + // ending in a * or ** will make it less strict. + re = '^(?:' + re + ')$' + + // can match anything, as long as it's not this. + if (this.negate) re = '^(?!' + re + ').*$' + + try { + this.regexp = new RegExp(re, flags) + } catch (ex) { + this.regexp = false + } + return this.regexp +} + +minimatch.match = function (list, pattern, options) { + options = options || {} + var mm = new Minimatch(pattern, options) + list = list.filter(function (f) { + return mm.match(f) + }) + if (mm.options.nonull && !list.length) { + list.push(pattern) + } + return list +} + +Minimatch.prototype.match = match +function match (f, partial) { + this.debug('match', f, this.pattern) + // short-circuit in the case of busted things. + // comments, etc. + if (this.comment) return false + if (this.empty) return f === '' + + if (f === '/' && partial) return true + + var options = this.options + + // windows: need to use /, not \ + if (path.sep !== '/') { + f = f.split(path.sep).join('/') + } + + // treat the test path as a set of pathparts. + f = f.split(slashSplit) + this.debug(this.pattern, 'split', f) + + // just ONE of the pattern sets in this.set needs to match + // in order for it to be valid. If negating, then just one + // match means that we have failed. + // Either way, return on the first hit. + + var set = this.set + this.debug(this.pattern, 'set', set) + + // Find the basename of the path by looking for the last non-empty segment + var filename + var i + for (i = f.length - 1; i >= 0; i--) { + filename = f[i] + if (filename) break + } + + for (i = 0; i < set.length; i++) { + var pattern = set[i] + var file = f + if (options.matchBase && pattern.length === 1) { + file = [filename] + } + var hit = this.matchOne(file, pattern, partial) + if (hit) { + if (options.flipNegate) return true + return !this.negate + } + } + + // didn't get any hits. this is success if it's a negative + // pattern, failure otherwise. + if (options.flipNegate) return false + return this.negate +} + +// set partial to true to test if, for example, +// "/a/b" matches the start of "/*/b/*/d" +// Partial means, if you run out of file before you run +// out of pattern, then that's fine, as long as all +// the parts match. +Minimatch.prototype.matchOne = function (file, pattern, partial) { + var options = this.options + + this.debug('matchOne', + { 'this': this, file: file, pattern: pattern }) + + this.debug('matchOne', file.length, pattern.length) + + for (var fi = 0, + pi = 0, + fl = file.length, + pl = pattern.length + ; (fi < fl) && (pi < pl) + ; fi++, pi++) { + this.debug('matchOne loop') + var p = pattern[pi] + var f = file[fi] + + this.debug(pattern, p, f) + + // should be impossible. + // some invalid regexp stuff in the set. + if (p === false) return false + + if (p === GLOBSTAR) { + this.debug('GLOBSTAR', [pattern, p, f]) + + // "**" + // a/**/b/**/c would match the following: + // a/b/x/y/z/c + // a/x/y/z/b/c + // a/b/x/b/x/c + // a/b/c + // To do this, take the rest of the pattern after + // the **, and see if it would match the file remainder. + // If so, return success. + // If not, the ** "swallows" a segment, and try again. + // This is recursively awful. + // + // a/**/b/**/c matching a/b/x/y/z/c + // - a matches a + // - doublestar + // - matchOne(b/x/y/z/c, b/**/c) + // - b matches b + // - doublestar + // - matchOne(x/y/z/c, c) -> no + // - matchOne(y/z/c, c) -> no + // - matchOne(z/c, c) -> no + // - matchOne(c, c) yes, hit + var fr = fi + var pr = pi + 1 + if (pr === pl) { + this.debug('** at the end') + // a ** at the end will just swallow the rest. + // We have found a match. + // however, it will not swallow /.x, unless + // options.dot is set. + // . and .. are *never* matched by **, for explosively + // exponential reasons. + for (; fi < fl; fi++) { + if (file[fi] === '.' || file[fi] === '..' || + (!options.dot && file[fi].charAt(0) === '.')) return false + } + return true + } + + // ok, let's see if we can swallow whatever we can. + while (fr < fl) { + var swallowee = file[fr] + + this.debug('\nglobstar while', file, fr, pattern, pr, swallowee) + + // XXX remove this slice. Just pass the start index. + if (this.matchOne(file.slice(fr), pattern.slice(pr), partial)) { + this.debug('globstar found match!', fr, fl, swallowee) + // found a match. + return true + } else { + // can't swallow "." or ".." ever. + // can only swallow ".foo" when explicitly asked. + if (swallowee === '.' || swallowee === '..' || + (!options.dot && swallowee.charAt(0) === '.')) { + this.debug('dot detected!', file, fr, pattern, pr) + break + } + + // ** swallows a segment, and continue. + this.debug('globstar swallow a segment, and continue') + fr++ + } + } + + // no match was found. + // However, in partial mode, we can't say this is necessarily over. + // If there's more *pattern* left, then + if (partial) { + // ran out of file + this.debug('\n>>> no match, partial?', file, fr, pattern, pr) + if (fr === fl) return true + } + return false + } + + // something other than ** + // non-magic patterns just have to match exactly + // patterns with magic have been turned into regexps. + var hit + if (typeof p === 'string') { + if (options.nocase) { + hit = f.toLowerCase() === p.toLowerCase() + } else { + hit = f === p + } + this.debug('string match', p, f, hit) + } else { + hit = f.match(p) + this.debug('pattern match', p, f, hit) + } + + if (!hit) return false + } + + // Note: ending in / means that we'll get a final "" + // at the end of the pattern. This can only match a + // corresponding "" at the end of the file. + // If the file ends in /, then it can only match a + // a pattern that ends in /, unless the pattern just + // doesn't have any more for it. But, a/b/ should *not* + // match "a/b/*", even though "" matches against the + // [^/]*? pattern, except in partial mode, where it might + // simply not be reached yet. + // However, a/b/ should still satisfy a/* + + // now either we fell off the end of the pattern, or we're done. + if (fi === fl && pi === pl) { + // ran out of pattern and filename at the same time. + // an exact hit! + return true + } else if (fi === fl) { + // ran out of file, but still had pattern left. + // this is ok if we're doing the match as part of + // a glob fs traversal. + return partial + } else if (pi === pl) { + // ran out of pattern, still have file left. + // this is only acceptable if we're on the very last + // empty segment of a file with a trailing slash. + // a/* should match a/b/ + var emptyFileEnd = (fi === fl - 1) && (file[fi] === '') + return emptyFileEnd + } + + // should be unreachable. + throw new Error('wtf?') +} + +// replace stuff like \* with * +function globUnescape (s) { + return s.replace(/\\(.)/g, '$1') +} + +function regExpEscape (s) { + return s.replace(/[-[\]{}()*+?.,\\^$|#\s]/g, '\\$&') +} + +},{"brace-expansion":11,"path":22}],21:[function(require,module,exports){ +var wrappy = require('wrappy') +module.exports = wrappy(once) +module.exports.strict = wrappy(onceStrict) + +once.proto = once(function () { + Object.defineProperty(Function.prototype, 'once', { + value: function () { + return once(this) + }, + configurable: true + }) + + Object.defineProperty(Function.prototype, 'onceStrict', { + value: function () { + return onceStrict(this) + }, + configurable: true + }) +}) + +function once (fn) { + var f = function () { + if (f.called) return f.value + f.called = true + return f.value = fn.apply(this, arguments) + } + f.called = false + return f +} + +function onceStrict (fn) { + var f = function () { + if (f.called) + throw new Error(f.onceError) + f.called = true + return f.value = fn.apply(this, arguments) + } + var name = fn.name || 'Function wrapped with `once`' + f.onceError = name + " shouldn't be called more than once" + f.called = false + return f +} + +},{"wrappy":29}],22:[function(require,module,exports){ +(function (process){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +// resolves . and .. elements in a path array with directory names there +// must be no slashes, empty elements, or device names (c:\) in the array +// (so also no leading and trailing slashes - it does not distinguish +// relative and absolute paths) +function normalizeArray(parts, allowAboveRoot) { + // if the path tries to go above the root, `up` ends up > 0 + var up = 0; + for (var i = parts.length - 1; i >= 0; i--) { + var last = parts[i]; + if (last === '.') { + parts.splice(i, 1); + } else if (last === '..') { + parts.splice(i, 1); + up++; + } else if (up) { + parts.splice(i, 1); + up--; + } + } + + // if the path is allowed to go above the root, restore leading ..s + if (allowAboveRoot) { + for (; up--; up) { + parts.unshift('..'); + } + } + + return parts; +} + +// Split a filename into [root, dir, basename, ext], unix version +// 'root' is just a slash, or nothing. +var splitPathRe = + /^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/; +var splitPath = function(filename) { + return splitPathRe.exec(filename).slice(1); +}; + +// path.resolve([from ...], to) +// posix version +exports.resolve = function() { + var resolvedPath = '', + resolvedAbsolute = false; + + for (var i = arguments.length - 1; i >= -1 && !resolvedAbsolute; i--) { + var path = (i >= 0) ? arguments[i] : process.cwd(); + + // Skip empty and invalid entries + if (typeof path !== 'string') { + throw new TypeError('Arguments to path.resolve must be strings'); + } else if (!path) { + continue; + } + + resolvedPath = path + '/' + resolvedPath; + resolvedAbsolute = path.charAt(0) === '/'; + } + + // At this point the path should be resolved to a full absolute path, but + // handle relative paths to be safe (might happen when process.cwd() fails) + + // Normalize the path + resolvedPath = normalizeArray(filter(resolvedPath.split('/'), function(p) { + return !!p; + }), !resolvedAbsolute).join('/'); + + return ((resolvedAbsolute ? '/' : '') + resolvedPath) || '.'; +}; + +// path.normalize(path) +// posix version +exports.normalize = function(path) { + var isAbsolute = exports.isAbsolute(path), + trailingSlash = substr(path, -1) === '/'; + + // Normalize the path + path = normalizeArray(filter(path.split('/'), function(p) { + return !!p; + }), !isAbsolute).join('/'); + + if (!path && !isAbsolute) { + path = '.'; + } + if (path && trailingSlash) { + path += '/'; + } + + return (isAbsolute ? '/' : '') + path; +}; + +// posix version +exports.isAbsolute = function(path) { + return path.charAt(0) === '/'; +}; + +// posix version +exports.join = function() { + var paths = Array.prototype.slice.call(arguments, 0); + return exports.normalize(filter(paths, function(p, index) { + if (typeof p !== 'string') { + throw new TypeError('Arguments to path.join must be strings'); + } + return p; + }).join('/')); +}; + + +// path.relative(from, to) +// posix version +exports.relative = function(from, to) { + from = exports.resolve(from).substr(1); + to = exports.resolve(to).substr(1); + + function trim(arr) { + var start = 0; + for (; start < arr.length; start++) { + if (arr[start] !== '') break; + } + + var end = arr.length - 1; + for (; end >= 0; end--) { + if (arr[end] !== '') break; + } + + if (start > end) return []; + return arr.slice(start, end - start + 1); + } + + var fromParts = trim(from.split('/')); + var toParts = trim(to.split('/')); + + var length = Math.min(fromParts.length, toParts.length); + var samePartsLength = length; + for (var i = 0; i < length; i++) { + if (fromParts[i] !== toParts[i]) { + samePartsLength = i; + break; + } + } + + var outputParts = []; + for (var i = samePartsLength; i < fromParts.length; i++) { + outputParts.push('..'); + } + + outputParts = outputParts.concat(toParts.slice(samePartsLength)); + + return outputParts.join('/'); +}; + +exports.sep = '/'; +exports.delimiter = ':'; + +exports.dirname = function(path) { + var result = splitPath(path), + root = result[0], + dir = result[1]; + + if (!root && !dir) { + // No dirname whatsoever + return '.'; + } + + if (dir) { + // It has a dirname, strip trailing slash + dir = dir.substr(0, dir.length - 1); + } + + return root + dir; +}; + + +exports.basename = function(path, ext) { + var f = splitPath(path)[2]; + // TODO: make this comparison case-insensitive on windows? + if (ext && f.substr(-1 * ext.length) === ext) { + f = f.substr(0, f.length - ext.length); + } + return f; +}; + + +exports.extname = function(path) { + return splitPath(path)[3]; +}; + +function filter (xs, f) { + if (xs.filter) return xs.filter(f); + var res = []; + for (var i = 0; i < xs.length; i++) { + if (f(xs[i], i, xs)) res.push(xs[i]); + } + return res; +} + +// String.prototype.substr - negative index don't work in IE8 +var substr = 'ab'.substr(-1) === 'b' + ? function (str, start, len) { return str.substr(start, len) } + : function (str, start, len) { + if (start < 0) start = str.length + start; + return str.substr(start, len); + } +; + +}).call(this,require('_process')) +},{"_process":24}],23:[function(require,module,exports){ +(function (process){ +'use strict'; + +function posix(path) { + return path.charAt(0) === '/'; +} + +function win32(path) { + // https://github.com/nodejs/node/blob/b3fcc245fb25539909ef1d5eaa01dbf92e168633/lib/path.js#L56 + var splitDeviceRe = /^([a-zA-Z]:|[\\\/]{2}[^\\\/]+[\\\/]+[^\\\/]+)?([\\\/])?([\s\S]*?)$/; + var result = splitDeviceRe.exec(path); + var device = result[1] || ''; + var isUnc = Boolean(device && device.charAt(1) !== ':'); + + // UNC paths are always absolute + return Boolean(result[2] || isUnc); +} + +module.exports = process.platform === 'win32' ? win32 : posix; +module.exports.posix = posix; +module.exports.win32 = win32; + +}).call(this,require('_process')) +},{"_process":24}],24:[function(require,module,exports){ +// shim for using process in browser +var process = module.exports = {}; + +// cached from whatever global is present so that test runners that stub it +// don't break things. But we need to wrap it in a try catch in case it is +// wrapped in strict mode code which doesn't define any globals. It's inside a +// function because try/catches deoptimize in certain engines. + +var cachedSetTimeout; +var cachedClearTimeout; + +function defaultSetTimout() { + throw new Error('setTimeout has not been defined'); +} +function defaultClearTimeout () { + throw new Error('clearTimeout has not been defined'); +} +(function () { + try { + if (typeof setTimeout === 'function') { + cachedSetTimeout = setTimeout; + } else { + cachedSetTimeout = defaultSetTimout; + } + } catch (e) { + cachedSetTimeout = defaultSetTimout; + } + try { + if (typeof clearTimeout === 'function') { + cachedClearTimeout = clearTimeout; + } else { + cachedClearTimeout = defaultClearTimeout; + } + } catch (e) { + cachedClearTimeout = defaultClearTimeout; + } +} ()) +function runTimeout(fun) { + if (cachedSetTimeout === setTimeout) { + //normal enviroments in sane situations + return setTimeout(fun, 0); + } + // if setTimeout wasn't available but was latter defined + if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) { + cachedSetTimeout = setTimeout; + return setTimeout(fun, 0); + } + try { + // when when somebody has screwed with setTimeout but no I.E. maddness + return cachedSetTimeout(fun, 0); + } catch(e){ + try { + // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally + return cachedSetTimeout.call(null, fun, 0); + } catch(e){ + // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error + return cachedSetTimeout.call(this, fun, 0); + } + } + + +} +function runClearTimeout(marker) { + if (cachedClearTimeout === clearTimeout) { + //normal enviroments in sane situations + return clearTimeout(marker); + } + // if clearTimeout wasn't available but was latter defined + if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) { + cachedClearTimeout = clearTimeout; + return clearTimeout(marker); + } + try { + // when when somebody has screwed with setTimeout but no I.E. maddness + return cachedClearTimeout(marker); + } catch (e){ + try { + // When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally + return cachedClearTimeout.call(null, marker); + } catch (e){ + // same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error. + // Some versions of I.E. have different rules for clearTimeout vs setTimeout + return cachedClearTimeout.call(this, marker); + } + } + + + +} +var queue = []; +var draining = false; +var currentQueue; +var queueIndex = -1; + +function cleanUpNextTick() { + if (!draining || !currentQueue) { + return; + } + draining = false; + if (currentQueue.length) { + queue = currentQueue.concat(queue); + } else { + queueIndex = -1; + } + if (queue.length) { + drainQueue(); + } +} + +function drainQueue() { + if (draining) { + return; + } + var timeout = runTimeout(cleanUpNextTick); + draining = true; + + var len = queue.length; + while(len) { + currentQueue = queue; + queue = []; + while (++queueIndex < len) { + if (currentQueue) { + currentQueue[queueIndex].run(); + } + } + queueIndex = -1; + len = queue.length; + } + currentQueue = null; + draining = false; + runClearTimeout(timeout); +} + +process.nextTick = function (fun) { + var args = new Array(arguments.length - 1); + if (arguments.length > 1) { + for (var i = 1; i < arguments.length; i++) { + args[i - 1] = arguments[i]; + } + } + queue.push(new Item(fun, args)); + if (queue.length === 1 && !draining) { + runTimeout(drainQueue); + } +}; + +// v8 likes predictible objects +function Item(fun, array) { + this.fun = fun; + this.array = array; +} +Item.prototype.run = function () { + this.fun.apply(null, this.array); +}; +process.title = 'browser'; +process.browser = true; +process.env = {}; +process.argv = []; +process.version = ''; // empty string to avoid regexp issues +process.versions = {}; + +function noop() {} + +process.on = noop; +process.addListener = noop; +process.once = noop; +process.off = noop; +process.removeListener = noop; +process.removeAllListeners = noop; +process.emit = noop; +process.prependListener = noop; +process.prependOnceListener = noop; + +process.listeners = function (name) { return [] } + +process.binding = function (name) { + throw new Error('process.binding is not supported'); +}; + +process.cwd = function () { return '/' }; +process.chdir = function (dir) { + throw new Error('process.chdir is not supported'); +}; +process.umask = function() { return 0; }; + +},{}],25:[function(require,module,exports){ +// Underscore.js 1.8.3 +// http://underscorejs.org +// (c) 2009-2015 Jeremy Ashkenas, DocumentCloud and Investigative Reporters & Editors +// Underscore may be freely distributed under the MIT license. + +(function() { + + // Baseline setup + // -------------- + + // Establish the root object, `window` in the browser, or `exports` on the server. + var root = this; + + // Save the previous value of the `_` variable. + var previousUnderscore = root._; + + // Save bytes in the minified (but not gzipped) version: + var ArrayProto = Array.prototype, ObjProto = Object.prototype, FuncProto = Function.prototype; + + // Create quick reference variables for speed access to core prototypes. + var + push = ArrayProto.push, + slice = ArrayProto.slice, + toString = ObjProto.toString, + hasOwnProperty = ObjProto.hasOwnProperty; + + // All **ECMAScript 5** native function implementations that we hope to use + // are declared here. + var + nativeIsArray = Array.isArray, + nativeKeys = Object.keys, + nativeBind = FuncProto.bind, + nativeCreate = Object.create; + + // Naked function reference for surrogate-prototype-swapping. + var Ctor = function(){}; + + // Create a safe reference to the Underscore object for use below. + var _ = function(obj) { + if (obj instanceof _) return obj; + if (!(this instanceof _)) return new _(obj); + this._wrapped = obj; + }; + + // Export the Underscore object for **Node.js**, with + // backwards-compatibility for the old `require()` API. If we're in + // the browser, add `_` as a global object. + if (typeof exports !== 'undefined') { + if (typeof module !== 'undefined' && module.exports) { + exports = module.exports = _; + } + exports._ = _; + } else { + root._ = _; + } + + // Current version. + _.VERSION = '1.8.3'; + + // Internal function that returns an efficient (for current engines) version + // of the passed-in callback, to be repeatedly applied in other Underscore + // functions. + var optimizeCb = function(func, context, argCount) { + if (context === void 0) return func; + switch (argCount == null ? 3 : argCount) { + case 1: return function(value) { + return func.call(context, value); + }; + case 2: return function(value, other) { + return func.call(context, value, other); + }; + case 3: return function(value, index, collection) { + return func.call(context, value, index, collection); + }; + case 4: return function(accumulator, value, index, collection) { + return func.call(context, accumulator, value, index, collection); + }; + } + return function() { + return func.apply(context, arguments); + }; + }; + + // A mostly-internal function to generate callbacks that can be applied + // to each element in a collection, returning the desired result — either + // identity, an arbitrary callback, a property matcher, or a property accessor. + var cb = function(value, context, argCount) { + if (value == null) return _.identity; + if (_.isFunction(value)) return optimizeCb(value, context, argCount); + if (_.isObject(value)) return _.matcher(value); + return _.property(value); + }; + _.iteratee = function(value, context) { + return cb(value, context, Infinity); + }; + + // An internal function for creating assigner functions. + var createAssigner = function(keysFunc, undefinedOnly) { + return function(obj) { + var length = arguments.length; + if (length < 2 || obj == null) return obj; + for (var index = 1; index < length; index++) { + var source = arguments[index], + keys = keysFunc(source), + l = keys.length; + for (var i = 0; i < l; i++) { + var key = keys[i]; + if (!undefinedOnly || obj[key] === void 0) obj[key] = source[key]; + } + } + return obj; + }; + }; + + // An internal function for creating a new object that inherits from another. + var baseCreate = function(prototype) { + if (!_.isObject(prototype)) return {}; + if (nativeCreate) return nativeCreate(prototype); + Ctor.prototype = prototype; + var result = new Ctor; + Ctor.prototype = null; + return result; + }; + + var property = function(key) { + return function(obj) { + return obj == null ? void 0 : obj[key]; + }; + }; + + // Helper for collection methods to determine whether a collection + // should be iterated as an array or as an object + // Related: http://people.mozilla.org/~jorendorff/es6-draft.html#sec-tolength + // Avoids a very nasty iOS 8 JIT bug on ARM-64. #2094 + var MAX_ARRAY_INDEX = Math.pow(2, 53) - 1; + var getLength = property('length'); + var isArrayLike = function(collection) { + var length = getLength(collection); + return typeof length == 'number' && length >= 0 && length <= MAX_ARRAY_INDEX; + }; + + // Collection Functions + // -------------------- + + // The cornerstone, an `each` implementation, aka `forEach`. + // Handles raw objects in addition to array-likes. Treats all + // sparse array-likes as if they were dense. + _.each = _.forEach = function(obj, iteratee, context) { + iteratee = optimizeCb(iteratee, context); + var i, length; + if (isArrayLike(obj)) { + for (i = 0, length = obj.length; i < length; i++) { + iteratee(obj[i], i, obj); + } + } else { + var keys = _.keys(obj); + for (i = 0, length = keys.length; i < length; i++) { + iteratee(obj[keys[i]], keys[i], obj); + } + } + return obj; + }; + + // Return the results of applying the iteratee to each element. + _.map = _.collect = function(obj, iteratee, context) { + iteratee = cb(iteratee, context); + var keys = !isArrayLike(obj) && _.keys(obj), + length = (keys || obj).length, + results = Array(length); + for (var index = 0; index < length; index++) { + var currentKey = keys ? keys[index] : index; + results[index] = iteratee(obj[currentKey], currentKey, obj); + } + return results; + }; + + // Create a reducing function iterating left or right. + function createReduce(dir) { + // Optimized iterator function as using arguments.length + // in the main function will deoptimize the, see #1991. + function iterator(obj, iteratee, memo, keys, index, length) { + for (; index >= 0 && index < length; index += dir) { + var currentKey = keys ? keys[index] : index; + memo = iteratee(memo, obj[currentKey], currentKey, obj); + } + return memo; + } + + return function(obj, iteratee, memo, context) { + iteratee = optimizeCb(iteratee, context, 4); + var keys = !isArrayLike(obj) && _.keys(obj), + length = (keys || obj).length, + index = dir > 0 ? 0 : length - 1; + // Determine the initial value if none is provided. + if (arguments.length < 3) { + memo = obj[keys ? keys[index] : index]; + index += dir; + } + return iterator(obj, iteratee, memo, keys, index, length); + }; + } + + // **Reduce** builds up a single result from a list of values, aka `inject`, + // or `foldl`. + _.reduce = _.foldl = _.inject = createReduce(1); + + // The right-associative version of reduce, also known as `foldr`. + _.reduceRight = _.foldr = createReduce(-1); + + // Return the first value which passes a truth test. Aliased as `detect`. + _.find = _.detect = function(obj, predicate, context) { + var key; + if (isArrayLike(obj)) { + key = _.findIndex(obj, predicate, context); + } else { + key = _.findKey(obj, predicate, context); + } + if (key !== void 0 && key !== -1) return obj[key]; + }; + + // Return all the elements that pass a truth test. + // Aliased as `select`. + _.filter = _.select = function(obj, predicate, context) { + var results = []; + predicate = cb(predicate, context); + _.each(obj, function(value, index, list) { + if (predicate(value, index, list)) results.push(value); + }); + return results; + }; + + // Return all the elements for which a truth test fails. + _.reject = function(obj, predicate, context) { + return _.filter(obj, _.negate(cb(predicate)), context); + }; + + // Determine whether all of the elements match a truth test. + // Aliased as `all`. + _.every = _.all = function(obj, predicate, context) { + predicate = cb(predicate, context); + var keys = !isArrayLike(obj) && _.keys(obj), + length = (keys || obj).length; + for (var index = 0; index < length; index++) { + var currentKey = keys ? keys[index] : index; + if (!predicate(obj[currentKey], currentKey, obj)) return false; + } + return true; + }; + + // Determine if at least one element in the object matches a truth test. + // Aliased as `any`. + _.some = _.any = function(obj, predicate, context) { + predicate = cb(predicate, context); + var keys = !isArrayLike(obj) && _.keys(obj), + length = (keys || obj).length; + for (var index = 0; index < length; index++) { + var currentKey = keys ? keys[index] : index; + if (predicate(obj[currentKey], currentKey, obj)) return true; + } + return false; + }; + + // Determine if the array or object contains a given item (using `===`). + // Aliased as `includes` and `include`. + _.contains = _.includes = _.include = function(obj, item, fromIndex, guard) { + if (!isArrayLike(obj)) obj = _.values(obj); + if (typeof fromIndex != 'number' || guard) fromIndex = 0; + return _.indexOf(obj, item, fromIndex) >= 0; + }; + + // Invoke a method (with arguments) on every item in a collection. + _.invoke = function(obj, method) { + var args = slice.call(arguments, 2); + var isFunc = _.isFunction(method); + return _.map(obj, function(value) { + var func = isFunc ? method : value[method]; + return func == null ? func : func.apply(value, args); + }); + }; + + // Convenience version of a common use case of `map`: fetching a property. + _.pluck = function(obj, key) { + return _.map(obj, _.property(key)); + }; + + // Convenience version of a common use case of `filter`: selecting only objects + // containing specific `key:value` pairs. + _.where = function(obj, attrs) { + return _.filter(obj, _.matcher(attrs)); + }; + + // Convenience version of a common use case of `find`: getting the first object + // containing specific `key:value` pairs. + _.findWhere = function(obj, attrs) { + return _.find(obj, _.matcher(attrs)); + }; + + // Return the maximum element (or element-based computation). + _.max = function(obj, iteratee, context) { + var result = -Infinity, lastComputed = -Infinity, + value, computed; + if (iteratee == null && obj != null) { + obj = isArrayLike(obj) ? obj : _.values(obj); + for (var i = 0, length = obj.length; i < length; i++) { + value = obj[i]; + if (value > result) { + result = value; + } + } + } else { + iteratee = cb(iteratee, context); + _.each(obj, function(value, index, list) { + computed = iteratee(value, index, list); + if (computed > lastComputed || computed === -Infinity && result === -Infinity) { + result = value; + lastComputed = computed; + } + }); + } + return result; + }; + + // Return the minimum element (or element-based computation). + _.min = function(obj, iteratee, context) { + var result = Infinity, lastComputed = Infinity, + value, computed; + if (iteratee == null && obj != null) { + obj = isArrayLike(obj) ? obj : _.values(obj); + for (var i = 0, length = obj.length; i < length; i++) { + value = obj[i]; + if (value < result) { + result = value; + } + } + } else { + iteratee = cb(iteratee, context); + _.each(obj, function(value, index, list) { + computed = iteratee(value, index, list); + if (computed < lastComputed || computed === Infinity && result === Infinity) { + result = value; + lastComputed = computed; + } + }); + } + return result; + }; + + // Shuffle a collection, using the modern version of the + // [Fisher-Yates shuffle](http://en.wikipedia.org/wiki/Fisher–Yates_shuffle). + _.shuffle = function(obj) { + var set = isArrayLike(obj) ? obj : _.values(obj); + var length = set.length; + var shuffled = Array(length); + for (var index = 0, rand; index < length; index++) { + rand = _.random(0, index); + if (rand !== index) shuffled[index] = shuffled[rand]; + shuffled[rand] = set[index]; + } + return shuffled; + }; + + // Sample **n** random values from a collection. + // If **n** is not specified, returns a single random element. + // The internal `guard` argument allows it to work with `map`. + _.sample = function(obj, n, guard) { + if (n == null || guard) { + if (!isArrayLike(obj)) obj = _.values(obj); + return obj[_.random(obj.length - 1)]; + } + return _.shuffle(obj).slice(0, Math.max(0, n)); + }; + + // Sort the object's values by a criterion produced by an iteratee. + _.sortBy = function(obj, iteratee, context) { + iteratee = cb(iteratee, context); + return _.pluck(_.map(obj, function(value, index, list) { + return { + value: value, + index: index, + criteria: iteratee(value, index, list) + }; + }).sort(function(left, right) { + var a = left.criteria; + var b = right.criteria; + if (a !== b) { + if (a > b || a === void 0) return 1; + if (a < b || b === void 0) return -1; + } + return left.index - right.index; + }), 'value'); + }; + + // An internal function used for aggregate "group by" operations. + var group = function(behavior) { + return function(obj, iteratee, context) { + var result = {}; + iteratee = cb(iteratee, context); + _.each(obj, function(value, index) { + var key = iteratee(value, index, obj); + behavior(result, value, key); + }); + return result; + }; + }; + + // Groups the object's values by a criterion. Pass either a string attribute + // to group by, or a function that returns the criterion. + _.groupBy = group(function(result, value, key) { + if (_.has(result, key)) result[key].push(value); else result[key] = [value]; + }); + + // Indexes the object's values by a criterion, similar to `groupBy`, but for + // when you know that your index values will be unique. + _.indexBy = group(function(result, value, key) { + result[key] = value; + }); + + // Counts instances of an object that group by a certain criterion. Pass + // either a string attribute to count by, or a function that returns the + // criterion. + _.countBy = group(function(result, value, key) { + if (_.has(result, key)) result[key]++; else result[key] = 1; + }); + + // Safely create a real, live array from anything iterable. + _.toArray = function(obj) { + if (!obj) return []; + if (_.isArray(obj)) return slice.call(obj); + if (isArrayLike(obj)) return _.map(obj, _.identity); + return _.values(obj); + }; + + // Return the number of elements in an object. + _.size = function(obj) { + if (obj == null) return 0; + return isArrayLike(obj) ? obj.length : _.keys(obj).length; + }; + + // Split a collection into two arrays: one whose elements all satisfy the given + // predicate, and one whose elements all do not satisfy the predicate. + _.partition = function(obj, predicate, context) { + predicate = cb(predicate, context); + var pass = [], fail = []; + _.each(obj, function(value, key, obj) { + (predicate(value, key, obj) ? pass : fail).push(value); + }); + return [pass, fail]; + }; + + // Array Functions + // --------------- + + // Get the first element of an array. Passing **n** will return the first N + // values in the array. Aliased as `head` and `take`. The **guard** check + // allows it to work with `_.map`. + _.first = _.head = _.take = function(array, n, guard) { + if (array == null) return void 0; + if (n == null || guard) return array[0]; + return _.initial(array, array.length - n); + }; + + // Returns everything but the last entry of the array. Especially useful on + // the arguments object. Passing **n** will return all the values in + // the array, excluding the last N. + _.initial = function(array, n, guard) { + return slice.call(array, 0, Math.max(0, array.length - (n == null || guard ? 1 : n))); + }; + + // Get the last element of an array. Passing **n** will return the last N + // values in the array. + _.last = function(array, n, guard) { + if (array == null) return void 0; + if (n == null || guard) return array[array.length - 1]; + return _.rest(array, Math.max(0, array.length - n)); + }; + + // Returns everything but the first entry of the array. Aliased as `tail` and `drop`. + // Especially useful on the arguments object. Passing an **n** will return + // the rest N values in the array. + _.rest = _.tail = _.drop = function(array, n, guard) { + return slice.call(array, n == null || guard ? 1 : n); + }; + + // Trim out all falsy values from an array. + _.compact = function(array) { + return _.filter(array, _.identity); + }; + + // Internal implementation of a recursive `flatten` function. + var flatten = function(input, shallow, strict, startIndex) { + var output = [], idx = 0; + for (var i = startIndex || 0, length = getLength(input); i < length; i++) { + var value = input[i]; + if (isArrayLike(value) && (_.isArray(value) || _.isArguments(value))) { + //flatten current level of array or arguments object + if (!shallow) value = flatten(value, shallow, strict); + var j = 0, len = value.length; + output.length += len; + while (j < len) { + output[idx++] = value[j++]; + } + } else if (!strict) { + output[idx++] = value; + } + } + return output; + }; + + // Flatten out an array, either recursively (by default), or just one level. + _.flatten = function(array, shallow) { + return flatten(array, shallow, false); + }; + + // Return a version of the array that does not contain the specified value(s). + _.without = function(array) { + return _.difference(array, slice.call(arguments, 1)); + }; + + // Produce a duplicate-free version of the array. If the array has already + // been sorted, you have the option of using a faster algorithm. + // Aliased as `unique`. + _.uniq = _.unique = function(array, isSorted, iteratee, context) { + if (!_.isBoolean(isSorted)) { + context = iteratee; + iteratee = isSorted; + isSorted = false; + } + if (iteratee != null) iteratee = cb(iteratee, context); + var result = []; + var seen = []; + for (var i = 0, length = getLength(array); i < length; i++) { + var value = array[i], + computed = iteratee ? iteratee(value, i, array) : value; + if (isSorted) { + if (!i || seen !== computed) result.push(value); + seen = computed; + } else if (iteratee) { + if (!_.contains(seen, computed)) { + seen.push(computed); + result.push(value); + } + } else if (!_.contains(result, value)) { + result.push(value); + } + } + return result; + }; + + // Produce an array that contains the union: each distinct element from all of + // the passed-in arrays. + _.union = function() { + return _.uniq(flatten(arguments, true, true)); + }; + + // Produce an array that contains every item shared between all the + // passed-in arrays. + _.intersection = function(array) { + var result = []; + var argsLength = arguments.length; + for (var i = 0, length = getLength(array); i < length; i++) { + var item = array[i]; + if (_.contains(result, item)) continue; + for (var j = 1; j < argsLength; j++) { + if (!_.contains(arguments[j], item)) break; + } + if (j === argsLength) result.push(item); + } + return result; + }; + + // Take the difference between one array and a number of other arrays. + // Only the elements present in just the first array will remain. + _.difference = function(array) { + var rest = flatten(arguments, true, true, 1); + return _.filter(array, function(value){ + return !_.contains(rest, value); + }); + }; + + // Zip together multiple lists into a single array -- elements that share + // an index go together. + _.zip = function() { + return _.unzip(arguments); + }; + + // Complement of _.zip. Unzip accepts an array of arrays and groups + // each array's elements on shared indices + _.unzip = function(array) { + var length = array && _.max(array, getLength).length || 0; + var result = Array(length); + + for (var index = 0; index < length; index++) { + result[index] = _.pluck(array, index); + } + return result; + }; + + // Converts lists into objects. Pass either a single array of `[key, value]` + // pairs, or two parallel arrays of the same length -- one of keys, and one of + // the corresponding values. + _.object = function(list, values) { + var result = {}; + for (var i = 0, length = getLength(list); i < length; i++) { + if (values) { + result[list[i]] = values[i]; + } else { + result[list[i][0]] = list[i][1]; + } + } + return result; + }; + + // Generator function to create the findIndex and findLastIndex functions + function createPredicateIndexFinder(dir) { + return function(array, predicate, context) { + predicate = cb(predicate, context); + var length = getLength(array); + var index = dir > 0 ? 0 : length - 1; + for (; index >= 0 && index < length; index += dir) { + if (predicate(array[index], index, array)) return index; + } + return -1; + }; + } + + // Returns the first index on an array-like that passes a predicate test + _.findIndex = createPredicateIndexFinder(1); + _.findLastIndex = createPredicateIndexFinder(-1); + + // Use a comparator function to figure out the smallest index at which + // an object should be inserted so as to maintain order. Uses binary search. + _.sortedIndex = function(array, obj, iteratee, context) { + iteratee = cb(iteratee, context, 1); + var value = iteratee(obj); + var low = 0, high = getLength(array); + while (low < high) { + var mid = Math.floor((low + high) / 2); + if (iteratee(array[mid]) < value) low = mid + 1; else high = mid; + } + return low; + }; + + // Generator function to create the indexOf and lastIndexOf functions + function createIndexFinder(dir, predicateFind, sortedIndex) { + return function(array, item, idx) { + var i = 0, length = getLength(array); + if (typeof idx == 'number') { + if (dir > 0) { + i = idx >= 0 ? idx : Math.max(idx + length, i); + } else { + length = idx >= 0 ? Math.min(idx + 1, length) : idx + length + 1; + } + } else if (sortedIndex && idx && length) { + idx = sortedIndex(array, item); + return array[idx] === item ? idx : -1; + } + if (item !== item) { + idx = predicateFind(slice.call(array, i, length), _.isNaN); + return idx >= 0 ? idx + i : -1; + } + for (idx = dir > 0 ? i : length - 1; idx >= 0 && idx < length; idx += dir) { + if (array[idx] === item) return idx; + } + return -1; + }; + } + + // Return the position of the first occurrence of an item in an array, + // or -1 if the item is not included in the array. + // If the array is large and already in sort order, pass `true` + // for **isSorted** to use binary search. + _.indexOf = createIndexFinder(1, _.findIndex, _.sortedIndex); + _.lastIndexOf = createIndexFinder(-1, _.findLastIndex); + + // Generate an integer Array containing an arithmetic progression. A port of + // the native Python `range()` function. See + // [the Python documentation](http://docs.python.org/library/functions.html#range). + _.range = function(start, stop, step) { + if (stop == null) { + stop = start || 0; + start = 0; + } + step = step || 1; + + var length = Math.max(Math.ceil((stop - start) / step), 0); + var range = Array(length); + + for (var idx = 0; idx < length; idx++, start += step) { + range[idx] = start; + } + + return range; + }; + + // Function (ahem) Functions + // ------------------ + + // Determines whether to execute a function as a constructor + // or a normal function with the provided arguments + var executeBound = function(sourceFunc, boundFunc, context, callingContext, args) { + if (!(callingContext instanceof boundFunc)) return sourceFunc.apply(context, args); + var self = baseCreate(sourceFunc.prototype); + var result = sourceFunc.apply(self, args); + if (_.isObject(result)) return result; + return self; + }; + + // Create a function bound to a given object (assigning `this`, and arguments, + // optionally). Delegates to **ECMAScript 5**'s native `Function.bind` if + // available. + _.bind = function(func, context) { + if (nativeBind && func.bind === nativeBind) return nativeBind.apply(func, slice.call(arguments, 1)); + if (!_.isFunction(func)) throw new TypeError('Bind must be called on a function'); + var args = slice.call(arguments, 2); + var bound = function() { + return executeBound(func, bound, context, this, args.concat(slice.call(arguments))); + }; + return bound; + }; + + // Partially apply a function by creating a version that has had some of its + // arguments pre-filled, without changing its dynamic `this` context. _ acts + // as a placeholder, allowing any combination of arguments to be pre-filled. + _.partial = function(func) { + var boundArgs = slice.call(arguments, 1); + var bound = function() { + var position = 0, length = boundArgs.length; + var args = Array(length); + for (var i = 0; i < length; i++) { + args[i] = boundArgs[i] === _ ? arguments[position++] : boundArgs[i]; + } + while (position < arguments.length) args.push(arguments[position++]); + return executeBound(func, bound, this, this, args); + }; + return bound; + }; + + // Bind a number of an object's methods to that object. Remaining arguments + // are the method names to be bound. Useful for ensuring that all callbacks + // defined on an object belong to it. + _.bindAll = function(obj) { + var i, length = arguments.length, key; + if (length <= 1) throw new Error('bindAll must be passed function names'); + for (i = 1; i < length; i++) { + key = arguments[i]; + obj[key] = _.bind(obj[key], obj); + } + return obj; + }; + + // Memoize an expensive function by storing its results. + _.memoize = function(func, hasher) { + var memoize = function(key) { + var cache = memoize.cache; + var address = '' + (hasher ? hasher.apply(this, arguments) : key); + if (!_.has(cache, address)) cache[address] = func.apply(this, arguments); + return cache[address]; + }; + memoize.cache = {}; + return memoize; + }; + + // Delays a function for the given number of milliseconds, and then calls + // it with the arguments supplied. + _.delay = function(func, wait) { + var args = slice.call(arguments, 2); + return setTimeout(function(){ + return func.apply(null, args); + }, wait); + }; + + // Defers a function, scheduling it to run after the current call stack has + // cleared. + _.defer = _.partial(_.delay, _, 1); + + // Returns a function, that, when invoked, will only be triggered at most once + // during a given window of time. Normally, the throttled function will run + // as much as it can, without ever going more than once per `wait` duration; + // but if you'd like to disable the execution on the leading edge, pass + // `{leading: false}`. To disable execution on the trailing edge, ditto. + _.throttle = function(func, wait, options) { + var context, args, result; + var timeout = null; + var previous = 0; + if (!options) options = {}; + var later = function() { + previous = options.leading === false ? 0 : _.now(); + timeout = null; + result = func.apply(context, args); + if (!timeout) context = args = null; + }; + return function() { + var now = _.now(); + if (!previous && options.leading === false) previous = now; + var remaining = wait - (now - previous); + context = this; + args = arguments; + if (remaining <= 0 || remaining > wait) { + if (timeout) { + clearTimeout(timeout); + timeout = null; + } + previous = now; + result = func.apply(context, args); + if (!timeout) context = args = null; + } else if (!timeout && options.trailing !== false) { + timeout = setTimeout(later, remaining); + } + return result; + }; + }; + + // Returns a function, that, as long as it continues to be invoked, will not + // be triggered. The function will be called after it stops being called for + // N milliseconds. If `immediate` is passed, trigger the function on the + // leading edge, instead of the trailing. + _.debounce = function(func, wait, immediate) { + var timeout, args, context, timestamp, result; + + var later = function() { + var last = _.now() - timestamp; + + if (last < wait && last >= 0) { + timeout = setTimeout(later, wait - last); + } else { + timeout = null; + if (!immediate) { + result = func.apply(context, args); + if (!timeout) context = args = null; + } + } + }; + + return function() { + context = this; + args = arguments; + timestamp = _.now(); + var callNow = immediate && !timeout; + if (!timeout) timeout = setTimeout(later, wait); + if (callNow) { + result = func.apply(context, args); + context = args = null; + } + + return result; + }; + }; + + // Returns the first function passed as an argument to the second, + // allowing you to adjust arguments, run code before and after, and + // conditionally execute the original function. + _.wrap = function(func, wrapper) { + return _.partial(wrapper, func); + }; + + // Returns a negated version of the passed-in predicate. + _.negate = function(predicate) { + return function() { + return !predicate.apply(this, arguments); + }; + }; + + // Returns a function that is the composition of a list of functions, each + // consuming the return value of the function that follows. + _.compose = function() { + var args = arguments; + var start = args.length - 1; + return function() { + var i = start; + var result = args[start].apply(this, arguments); + while (i--) result = args[i].call(this, result); + return result; + }; + }; + + // Returns a function that will only be executed on and after the Nth call. + _.after = function(times, func) { + return function() { + if (--times < 1) { + return func.apply(this, arguments); + } + }; + }; + + // Returns a function that will only be executed up to (but not including) the Nth call. + _.before = function(times, func) { + var memo; + return function() { + if (--times > 0) { + memo = func.apply(this, arguments); + } + if (times <= 1) func = null; + return memo; + }; + }; + + // Returns a function that will be executed at most one time, no matter how + // often you call it. Useful for lazy initialization. + _.once = _.partial(_.before, 2); + + // Object Functions + // ---------------- + + // Keys in IE < 9 that won't be iterated by `for key in ...` and thus missed. + var hasEnumBug = !{toString: null}.propertyIsEnumerable('toString'); + var nonEnumerableProps = ['valueOf', 'isPrototypeOf', 'toString', + 'propertyIsEnumerable', 'hasOwnProperty', 'toLocaleString']; + + function collectNonEnumProps(obj, keys) { + var nonEnumIdx = nonEnumerableProps.length; + var constructor = obj.constructor; + var proto = (_.isFunction(constructor) && constructor.prototype) || ObjProto; + + // Constructor is a special case. + var prop = 'constructor'; + if (_.has(obj, prop) && !_.contains(keys, prop)) keys.push(prop); + + while (nonEnumIdx--) { + prop = nonEnumerableProps[nonEnumIdx]; + if (prop in obj && obj[prop] !== proto[prop] && !_.contains(keys, prop)) { + keys.push(prop); + } + } + } + + // Retrieve the names of an object's own properties. + // Delegates to **ECMAScript 5**'s native `Object.keys` + _.keys = function(obj) { + if (!_.isObject(obj)) return []; + if (nativeKeys) return nativeKeys(obj); + var keys = []; + for (var key in obj) if (_.has(obj, key)) keys.push(key); + // Ahem, IE < 9. + if (hasEnumBug) collectNonEnumProps(obj, keys); + return keys; + }; + + // Retrieve all the property names of an object. + _.allKeys = function(obj) { + if (!_.isObject(obj)) return []; + var keys = []; + for (var key in obj) keys.push(key); + // Ahem, IE < 9. + if (hasEnumBug) collectNonEnumProps(obj, keys); + return keys; + }; + + // Retrieve the values of an object's properties. + _.values = function(obj) { + var keys = _.keys(obj); + var length = keys.length; + var values = Array(length); + for (var i = 0; i < length; i++) { + values[i] = obj[keys[i]]; + } + return values; + }; + + // Returns the results of applying the iteratee to each element of the object + // In contrast to _.map it returns an object + _.mapObject = function(obj, iteratee, context) { + iteratee = cb(iteratee, context); + var keys = _.keys(obj), + length = keys.length, + results = {}, + currentKey; + for (var index = 0; index < length; index++) { + currentKey = keys[index]; + results[currentKey] = iteratee(obj[currentKey], currentKey, obj); + } + return results; + }; + + // Convert an object into a list of `[key, value]` pairs. + _.pairs = function(obj) { + var keys = _.keys(obj); + var length = keys.length; + var pairs = Array(length); + for (var i = 0; i < length; i++) { + pairs[i] = [keys[i], obj[keys[i]]]; + } + return pairs; + }; + + // Invert the keys and values of an object. The values must be serializable. + _.invert = function(obj) { + var result = {}; + var keys = _.keys(obj); + for (var i = 0, length = keys.length; i < length; i++) { + result[obj[keys[i]]] = keys[i]; + } + return result; + }; + + // Return a sorted list of the function names available on the object. + // Aliased as `methods` + _.functions = _.methods = function(obj) { + var names = []; + for (var key in obj) { + if (_.isFunction(obj[key])) names.push(key); + } + return names.sort(); + }; + + // Extend a given object with all the properties in passed-in object(s). + _.extend = createAssigner(_.allKeys); + + // Assigns a given object with all the own properties in the passed-in object(s) + // (https://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Object/assign) + _.extendOwn = _.assign = createAssigner(_.keys); + + // Returns the first key on an object that passes a predicate test + _.findKey = function(obj, predicate, context) { + predicate = cb(predicate, context); + var keys = _.keys(obj), key; + for (var i = 0, length = keys.length; i < length; i++) { + key = keys[i]; + if (predicate(obj[key], key, obj)) return key; + } + }; + + // Return a copy of the object only containing the whitelisted properties. + _.pick = function(object, oiteratee, context) { + var result = {}, obj = object, iteratee, keys; + if (obj == null) return result; + if (_.isFunction(oiteratee)) { + keys = _.allKeys(obj); + iteratee = optimizeCb(oiteratee, context); + } else { + keys = flatten(arguments, false, false, 1); + iteratee = function(value, key, obj) { return key in obj; }; + obj = Object(obj); + } + for (var i = 0, length = keys.length; i < length; i++) { + var key = keys[i]; + var value = obj[key]; + if (iteratee(value, key, obj)) result[key] = value; + } + return result; + }; + + // Return a copy of the object without the blacklisted properties. + _.omit = function(obj, iteratee, context) { + if (_.isFunction(iteratee)) { + iteratee = _.negate(iteratee); + } else { + var keys = _.map(flatten(arguments, false, false, 1), String); + iteratee = function(value, key) { + return !_.contains(keys, key); + }; + } + return _.pick(obj, iteratee, context); + }; + + // Fill in a given object with default properties. + _.defaults = createAssigner(_.allKeys, true); + + // Creates an object that inherits from the given prototype object. + // If additional properties are provided then they will be added to the + // created object. + _.create = function(prototype, props) { + var result = baseCreate(prototype); + if (props) _.extendOwn(result, props); + return result; + }; + + // Create a (shallow-cloned) duplicate of an object. + _.clone = function(obj) { + if (!_.isObject(obj)) return obj; + return _.isArray(obj) ? obj.slice() : _.extend({}, obj); + }; + + // Invokes interceptor with the obj, and then returns obj. + // The primary purpose of this method is to "tap into" a method chain, in + // order to perform operations on intermediate results within the chain. + _.tap = function(obj, interceptor) { + interceptor(obj); + return obj; + }; + + // Returns whether an object has a given set of `key:value` pairs. + _.isMatch = function(object, attrs) { + var keys = _.keys(attrs), length = keys.length; + if (object == null) return !length; + var obj = Object(object); + for (var i = 0; i < length; i++) { + var key = keys[i]; + if (attrs[key] !== obj[key] || !(key in obj)) return false; + } + return true; + }; + + + // Internal recursive comparison function for `isEqual`. + var eq = function(a, b, aStack, bStack) { + // Identical objects are equal. `0 === -0`, but they aren't identical. + // See the [Harmony `egal` proposal](http://wiki.ecmascript.org/doku.php?id=harmony:egal). + if (a === b) return a !== 0 || 1 / a === 1 / b; + // A strict comparison is necessary because `null == undefined`. + if (a == null || b == null) return a === b; + // Unwrap any wrapped objects. + if (a instanceof _) a = a._wrapped; + if (b instanceof _) b = b._wrapped; + // Compare `[[Class]]` names. + var className = toString.call(a); + if (className !== toString.call(b)) return false; + switch (className) { + // Strings, numbers, regular expressions, dates, and booleans are compared by value. + case '[object RegExp]': + // RegExps are coerced to strings for comparison (Note: '' + /a/i === '/a/i') + case '[object String]': + // Primitives and their corresponding object wrappers are equivalent; thus, `"5"` is + // equivalent to `new String("5")`. + return '' + a === '' + b; + case '[object Number]': + // `NaN`s are equivalent, but non-reflexive. + // Object(NaN) is equivalent to NaN + if (+a !== +a) return +b !== +b; + // An `egal` comparison is performed for other numeric values. + return +a === 0 ? 1 / +a === 1 / b : +a === +b; + case '[object Date]': + case '[object Boolean]': + // Coerce dates and booleans to numeric primitive values. Dates are compared by their + // millisecond representations. Note that invalid dates with millisecond representations + // of `NaN` are not equivalent. + return +a === +b; + } + + var areArrays = className === '[object Array]'; + if (!areArrays) { + if (typeof a != 'object' || typeof b != 'object') return false; + + // Objects with different constructors are not equivalent, but `Object`s or `Array`s + // from different frames are. + var aCtor = a.constructor, bCtor = b.constructor; + if (aCtor !== bCtor && !(_.isFunction(aCtor) && aCtor instanceof aCtor && + _.isFunction(bCtor) && bCtor instanceof bCtor) + && ('constructor' in a && 'constructor' in b)) { + return false; + } + } + // Assume equality for cyclic structures. The algorithm for detecting cyclic + // structures is adapted from ES 5.1 section 15.12.3, abstract operation `JO`. + + // Initializing stack of traversed objects. + // It's done here since we only need them for objects and arrays comparison. + aStack = aStack || []; + bStack = bStack || []; + var length = aStack.length; + while (length--) { + // Linear search. Performance is inversely proportional to the number of + // unique nested structures. + if (aStack[length] === a) return bStack[length] === b; + } + + // Add the first object to the stack of traversed objects. + aStack.push(a); + bStack.push(b); + + // Recursively compare objects and arrays. + if (areArrays) { + // Compare array lengths to determine if a deep comparison is necessary. + length = a.length; + if (length !== b.length) return false; + // Deep compare the contents, ignoring non-numeric properties. + while (length--) { + if (!eq(a[length], b[length], aStack, bStack)) return false; + } + } else { + // Deep compare objects. + var keys = _.keys(a), key; + length = keys.length; + // Ensure that both objects contain the same number of properties before comparing deep equality. + if (_.keys(b).length !== length) return false; + while (length--) { + // Deep compare each member + key = keys[length]; + if (!(_.has(b, key) && eq(a[key], b[key], aStack, bStack))) return false; + } + } + // Remove the first object from the stack of traversed objects. + aStack.pop(); + bStack.pop(); + return true; + }; + + // Perform a deep comparison to check if two objects are equal. + _.isEqual = function(a, b) { + return eq(a, b); + }; + + // Is a given array, string, or object empty? + // An "empty" object has no enumerable own-properties. + _.isEmpty = function(obj) { + if (obj == null) return true; + if (isArrayLike(obj) && (_.isArray(obj) || _.isString(obj) || _.isArguments(obj))) return obj.length === 0; + return _.keys(obj).length === 0; + }; + + // Is a given value a DOM element? + _.isElement = function(obj) { + return !!(obj && obj.nodeType === 1); + }; + + // Is a given value an array? + // Delegates to ECMA5's native Array.isArray + _.isArray = nativeIsArray || function(obj) { + return toString.call(obj) === '[object Array]'; + }; + + // Is a given variable an object? + _.isObject = function(obj) { + var type = typeof obj; + return type === 'function' || type === 'object' && !!obj; + }; + + // Add some isType methods: isArguments, isFunction, isString, isNumber, isDate, isRegExp, isError. + _.each(['Arguments', 'Function', 'String', 'Number', 'Date', 'RegExp', 'Error'], function(name) { + _['is' + name] = function(obj) { + return toString.call(obj) === '[object ' + name + ']'; + }; + }); + + // Define a fallback version of the method in browsers (ahem, IE < 9), where + // there isn't any inspectable "Arguments" type. + if (!_.isArguments(arguments)) { + _.isArguments = function(obj) { + return _.has(obj, 'callee'); + }; + } + + // Optimize `isFunction` if appropriate. Work around some typeof bugs in old v8, + // IE 11 (#1621), and in Safari 8 (#1929). + if (typeof /./ != 'function' && typeof Int8Array != 'object') { + _.isFunction = function(obj) { + return typeof obj == 'function' || false; + }; + } + + // Is a given object a finite number? + _.isFinite = function(obj) { + return isFinite(obj) && !isNaN(parseFloat(obj)); + }; + + // Is the given value `NaN`? (NaN is the only number which does not equal itself). + _.isNaN = function(obj) { + return _.isNumber(obj) && obj !== +obj; + }; + + // Is a given value a boolean? + _.isBoolean = function(obj) { + return obj === true || obj === false || toString.call(obj) === '[object Boolean]'; + }; + + // Is a given value equal to null? + _.isNull = function(obj) { + return obj === null; + }; + + // Is a given variable undefined? + _.isUndefined = function(obj) { + return obj === void 0; + }; + + // Shortcut function for checking if an object has a given property directly + // on itself (in other words, not on a prototype). + _.has = function(obj, key) { + return obj != null && hasOwnProperty.call(obj, key); + }; + + // Utility Functions + // ----------------- + + // Run Underscore.js in *noConflict* mode, returning the `_` variable to its + // previous owner. Returns a reference to the Underscore object. + _.noConflict = function() { + root._ = previousUnderscore; + return this; + }; + + // Keep the identity function around for default iteratees. + _.identity = function(value) { + return value; + }; + + // Predicate-generating functions. Often useful outside of Underscore. + _.constant = function(value) { + return function() { + return value; + }; + }; + + _.noop = function(){}; + + _.property = property; + + // Generates a function for a given object that returns a given property. + _.propertyOf = function(obj) { + return obj == null ? function(){} : function(key) { + return obj[key]; + }; + }; + + // Returns a predicate for checking whether an object has a given set of + // `key:value` pairs. + _.matcher = _.matches = function(attrs) { + attrs = _.extendOwn({}, attrs); + return function(obj) { + return _.isMatch(obj, attrs); + }; + }; + + // Run a function **n** times. + _.times = function(n, iteratee, context) { + var accum = Array(Math.max(0, n)); + iteratee = optimizeCb(iteratee, context, 1); + for (var i = 0; i < n; i++) accum[i] = iteratee(i); + return accum; + }; + + // Return a random integer between min and max (inclusive). + _.random = function(min, max) { + if (max == null) { + max = min; + min = 0; + } + return min + Math.floor(Math.random() * (max - min + 1)); + }; + + // A (possibly faster) way to get the current timestamp as an integer. + _.now = Date.now || function() { + return new Date().getTime(); + }; + + // List of HTML entities for escaping. + var escapeMap = { + '&': '&', + '<': '<', + '>': '>', + '"': '"', + "'": ''', + '`': '`' + }; + var unescapeMap = _.invert(escapeMap); + + // Functions for escaping and unescaping strings to/from HTML interpolation. + var createEscaper = function(map) { + var escaper = function(match) { + return map[match]; + }; + // Regexes for identifying a key that needs to be escaped + var source = '(?:' + _.keys(map).join('|') + ')'; + var testRegexp = RegExp(source); + var replaceRegexp = RegExp(source, 'g'); + return function(string) { + string = string == null ? '' : '' + string; + return testRegexp.test(string) ? string.replace(replaceRegexp, escaper) : string; + }; + }; + _.escape = createEscaper(escapeMap); + _.unescape = createEscaper(unescapeMap); + + // If the value of the named `property` is a function then invoke it with the + // `object` as context; otherwise, return it. + _.result = function(object, property, fallback) { + var value = object == null ? void 0 : object[property]; + if (value === void 0) { + value = fallback; + } + return _.isFunction(value) ? value.call(object) : value; + }; + + // Generate a unique integer id (unique within the entire client session). + // Useful for temporary DOM ids. + var idCounter = 0; + _.uniqueId = function(prefix) { + var id = ++idCounter + ''; + return prefix ? prefix + id : id; + }; + + // By default, Underscore uses ERB-style template delimiters, change the + // following template settings to use alternative delimiters. + _.templateSettings = { + evaluate : /<%([\s\S]+?)%>/g, + interpolate : /<%=([\s\S]+?)%>/g, + escape : /<%-([\s\S]+?)%>/g + }; + + // When customizing `templateSettings`, if you don't want to define an + // interpolation, evaluation or escaping regex, we need one that is + // guaranteed not to match. + var noMatch = /(.)^/; + + // Certain characters need to be escaped so that they can be put into a + // string literal. + var escapes = { + "'": "'", + '\\': '\\', + '\r': 'r', + '\n': 'n', + '\u2028': 'u2028', + '\u2029': 'u2029' + }; + + var escaper = /\\|'|\r|\n|\u2028|\u2029/g; + + var escapeChar = function(match) { + return '\\' + escapes[match]; + }; + + // JavaScript micro-templating, similar to John Resig's implementation. + // Underscore templating handles arbitrary delimiters, preserves whitespace, + // and correctly escapes quotes within interpolated code. + // NB: `oldSettings` only exists for backwards compatibility. + _.template = function(text, settings, oldSettings) { + if (!settings && oldSettings) settings = oldSettings; + settings = _.defaults({}, settings, _.templateSettings); + + // Combine delimiters into one regular expression via alternation. + var matcher = RegExp([ + (settings.escape || noMatch).source, + (settings.interpolate || noMatch).source, + (settings.evaluate || noMatch).source + ].join('|') + '|$', 'g'); + + // Compile the template source, escaping string literals appropriately. + var index = 0; + var source = "__p+='"; + text.replace(matcher, function(match, escape, interpolate, evaluate, offset) { + source += text.slice(index, offset).replace(escaper, escapeChar); + index = offset + match.length; + + if (escape) { + source += "'+\n((__t=(" + escape + "))==null?'':_.escape(__t))+\n'"; + } else if (interpolate) { + source += "'+\n((__t=(" + interpolate + "))==null?'':__t)+\n'"; + } else if (evaluate) { + source += "';\n" + evaluate + "\n__p+='"; + } + + // Adobe VMs need the match returned to produce the correct offest. + return match; + }); + source += "';\n"; + + // If a variable is not specified, place data values in local scope. + if (!settings.variable) source = 'with(obj||{}){\n' + source + '}\n'; + + source = "var __t,__p='',__j=Array.prototype.join," + + "print=function(){__p+=__j.call(arguments,'');};\n" + + source + 'return __p;\n'; + + try { + var render = new Function(settings.variable || 'obj', '_', source); + } catch (e) { + e.source = source; + throw e; + } + + var template = function(data) { + return render.call(this, data, _); + }; + + // Provide the compiled source as a convenience for precompilation. + var argument = settings.variable || 'obj'; + template.source = 'function(' + argument + '){\n' + source + '}'; + + return template; + }; + + // Add a "chain" function. Start chaining a wrapped Underscore object. + _.chain = function(obj) { + var instance = _(obj); + instance._chain = true; + return instance; + }; + + // OOP + // --------------- + // If Underscore is called as a function, it returns a wrapped object that + // can be used OO-style. This wrapper holds altered versions of all the + // underscore functions. Wrapped objects may be chained. + + // Helper function to continue chaining intermediate results. + var result = function(instance, obj) { + return instance._chain ? _(obj).chain() : obj; + }; + + // Add your own custom functions to the Underscore object. + _.mixin = function(obj) { + _.each(_.functions(obj), function(name) { + var func = _[name] = obj[name]; + _.prototype[name] = function() { + var args = [this._wrapped]; + push.apply(args, arguments); + return result(this, func.apply(_, args)); + }; + }); + }; + + // Add all of the Underscore functions to the wrapper object. + _.mixin(_); + + // Add all mutator Array functions to the wrapper. + _.each(['pop', 'push', 'reverse', 'shift', 'sort', 'splice', 'unshift'], function(name) { + var method = ArrayProto[name]; + _.prototype[name] = function() { + var obj = this._wrapped; + method.apply(obj, arguments); + if ((name === 'shift' || name === 'splice') && obj.length === 0) delete obj[0]; + return result(this, obj); + }; + }); + + // Add all accessor Array functions to the wrapper. + _.each(['concat', 'join', 'slice'], function(name) { + var method = ArrayProto[name]; + _.prototype[name] = function() { + return result(this, method.apply(this._wrapped, arguments)); + }; + }); + + // Extracts the result from a wrapped and chained object. + _.prototype.value = function() { + return this._wrapped; + }; + + // Provide unwrapping proxy for some methods used in engine operations + // such as arithmetic and JSON stringification. + _.prototype.valueOf = _.prototype.toJSON = _.prototype.value; + + _.prototype.toString = function() { + return '' + this._wrapped; + }; + + // AMD registration happens at the end for compatibility with AMD loaders + // that may not enforce next-turn semantics on modules. Even though general + // practice for AMD registration is to be anonymous, underscore registers + // as a named module because, like jQuery, it is a base library that is + // popular enough to be bundled in a third party lib, but not be part of + // an AMD load request. Those cases could generate an error when an + // anonymous define() is called outside of a loader request. + if (typeof define === 'function' && define.amd) { + define('underscore', [], function() { + return _; + }); + } +}.call(this)); + +},{}],26:[function(require,module,exports){ +arguments[4][19][0].apply(exports,arguments) +},{"dup":19}],27:[function(require,module,exports){ +module.exports = function isBuffer(arg) { + return arg && typeof arg === 'object' + && typeof arg.copy === 'function' + && typeof arg.fill === 'function' + && typeof arg.readUInt8 === 'function'; +} +},{}],28:[function(require,module,exports){ +(function (process,global){ +// Copyright Joyent, Inc. and other Node contributors. +// +// Permission is hereby granted, free of charge, to any person obtaining a +// copy of this software and associated documentation files (the +// "Software"), to deal in the Software without restriction, including +// without limitation the rights to use, copy, modify, merge, publish, +// distribute, sublicense, and/or sell copies of the Software, and to permit +// persons to whom the Software is furnished to do so, subject to the +// following conditions: +// +// The above copyright notice and this permission notice shall be included +// in all copies or substantial portions of the Software. +// +// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS +// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF +// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN +// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, +// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR +// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE +// USE OR OTHER DEALINGS IN THE SOFTWARE. + +var formatRegExp = /%[sdj%]/g; +exports.format = function(f) { + if (!isString(f)) { + var objects = []; + for (var i = 0; i < arguments.length; i++) { + objects.push(inspect(arguments[i])); + } + return objects.join(' '); + } + + var i = 1; + var args = arguments; + var len = args.length; + var str = String(f).replace(formatRegExp, function(x) { + if (x === '%%') return '%'; + if (i >= len) return x; + switch (x) { + case '%s': return String(args[i++]); + case '%d': return Number(args[i++]); + case '%j': + try { + return JSON.stringify(args[i++]); + } catch (_) { + return '[Circular]'; + } + default: + return x; + } + }); + for (var x = args[i]; i < len; x = args[++i]) { + if (isNull(x) || !isObject(x)) { + str += ' ' + x; + } else { + str += ' ' + inspect(x); + } + } + return str; +}; + + +// Mark that a method should not be used. +// Returns a modified function which warns once by default. +// If --no-deprecation is set, then it is a no-op. +exports.deprecate = function(fn, msg) { + // Allow for deprecating things in the process of starting up. + if (isUndefined(global.process)) { + return function() { + return exports.deprecate(fn, msg).apply(this, arguments); + }; + } + + if (process.noDeprecation === true) { + return fn; + } + + var warned = false; + function deprecated() { + if (!warned) { + if (process.throwDeprecation) { + throw new Error(msg); + } else if (process.traceDeprecation) { + console.trace(msg); + } else { + console.error(msg); + } + warned = true; + } + return fn.apply(this, arguments); + } + + return deprecated; +}; + + +var debugs = {}; +var debugEnviron; +exports.debuglog = function(set) { + if (isUndefined(debugEnviron)) + debugEnviron = process.env.NODE_DEBUG || ''; + set = set.toUpperCase(); + if (!debugs[set]) { + if (new RegExp('\\b' + set + '\\b', 'i').test(debugEnviron)) { + var pid = process.pid; + debugs[set] = function() { + var msg = exports.format.apply(exports, arguments); + console.error('%s %d: %s', set, pid, msg); + }; + } else { + debugs[set] = function() {}; + } + } + return debugs[set]; +}; + + +/** + * Echos the value of a value. Trys to print the value out + * in the best way possible given the different types. + * + * @param {Object} obj The object to print out. + * @param {Object} opts Optional options object that alters the output. + */ +/* legacy: obj, showHidden, depth, colors*/ +function inspect(obj, opts) { + // default options + var ctx = { + seen: [], + stylize: stylizeNoColor + }; + // legacy... + if (arguments.length >= 3) ctx.depth = arguments[2]; + if (arguments.length >= 4) ctx.colors = arguments[3]; + if (isBoolean(opts)) { + // legacy... + ctx.showHidden = opts; + } else if (opts) { + // got an "options" object + exports._extend(ctx, opts); + } + // set default options + if (isUndefined(ctx.showHidden)) ctx.showHidden = false; + if (isUndefined(ctx.depth)) ctx.depth = 2; + if (isUndefined(ctx.colors)) ctx.colors = false; + if (isUndefined(ctx.customInspect)) ctx.customInspect = true; + if (ctx.colors) ctx.stylize = stylizeWithColor; + return formatValue(ctx, obj, ctx.depth); +} +exports.inspect = inspect; + + +// http://en.wikipedia.org/wiki/ANSI_escape_code#graphics +inspect.colors = { + 'bold' : [1, 22], + 'italic' : [3, 23], + 'underline' : [4, 24], + 'inverse' : [7, 27], + 'white' : [37, 39], + 'grey' : [90, 39], + 'black' : [30, 39], + 'blue' : [34, 39], + 'cyan' : [36, 39], + 'green' : [32, 39], + 'magenta' : [35, 39], + 'red' : [31, 39], + 'yellow' : [33, 39] +}; + +// Don't use 'blue' not visible on cmd.exe +inspect.styles = { + 'special': 'cyan', + 'number': 'yellow', + 'boolean': 'yellow', + 'undefined': 'grey', + 'null': 'bold', + 'string': 'green', + 'date': 'magenta', + // "name": intentionally not styling + 'regexp': 'red' +}; + + +function stylizeWithColor(str, styleType) { + var style = inspect.styles[styleType]; + + if (style) { + return '\u001b[' + inspect.colors[style][0] + 'm' + str + + '\u001b[' + inspect.colors[style][1] + 'm'; + } else { + return str; + } +} + + +function stylizeNoColor(str, styleType) { + return str; +} + + +function arrayToHash(array) { + var hash = {}; + + array.forEach(function(val, idx) { + hash[val] = true; + }); + + return hash; +} + + +function formatValue(ctx, value, recurseTimes) { + // Provide a hook for user-specified inspect functions. + // Check that value is an object with an inspect function on it + if (ctx.customInspect && + value && + isFunction(value.inspect) && + // Filter out the util module, it's inspect function is special + value.inspect !== exports.inspect && + // Also filter out any prototype objects using the circular check. + !(value.constructor && value.constructor.prototype === value)) { + var ret = value.inspect(recurseTimes, ctx); + if (!isString(ret)) { + ret = formatValue(ctx, ret, recurseTimes); + } + return ret; + } + + // Primitive types cannot have properties + var primitive = formatPrimitive(ctx, value); + if (primitive) { + return primitive; + } + + // Look up the keys of the object. + var keys = Object.keys(value); + var visibleKeys = arrayToHash(keys); + + if (ctx.showHidden) { + keys = Object.getOwnPropertyNames(value); + } + + // IE doesn't make error fields non-enumerable + // http://msdn.microsoft.com/en-us/library/ie/dww52sbt(v=vs.94).aspx + if (isError(value) + && (keys.indexOf('message') >= 0 || keys.indexOf('description') >= 0)) { + return formatError(value); + } + + // Some type of object without properties can be shortcutted. + if (keys.length === 0) { + if (isFunction(value)) { + var name = value.name ? ': ' + value.name : ''; + return ctx.stylize('[Function' + name + ']', 'special'); + } + if (isRegExp(value)) { + return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); + } + if (isDate(value)) { + return ctx.stylize(Date.prototype.toString.call(value), 'date'); + } + if (isError(value)) { + return formatError(value); + } + } + + var base = '', array = false, braces = ['{', '}']; + + // Make Array say that they are Array + if (isArray(value)) { + array = true; + braces = ['[', ']']; + } + + // Make functions say that they are functions + if (isFunction(value)) { + var n = value.name ? ': ' + value.name : ''; + base = ' [Function' + n + ']'; + } + + // Make RegExps say that they are RegExps + if (isRegExp(value)) { + base = ' ' + RegExp.prototype.toString.call(value); + } + + // Make dates with properties first say the date + if (isDate(value)) { + base = ' ' + Date.prototype.toUTCString.call(value); + } + + // Make error with message first say the error + if (isError(value)) { + base = ' ' + formatError(value); + } + + if (keys.length === 0 && (!array || value.length == 0)) { + return braces[0] + base + braces[1]; + } + + if (recurseTimes < 0) { + if (isRegExp(value)) { + return ctx.stylize(RegExp.prototype.toString.call(value), 'regexp'); + } else { + return ctx.stylize('[Object]', 'special'); + } + } + + ctx.seen.push(value); + + var output; + if (array) { + output = formatArray(ctx, value, recurseTimes, visibleKeys, keys); + } else { + output = keys.map(function(key) { + return formatProperty(ctx, value, recurseTimes, visibleKeys, key, array); + }); + } + + ctx.seen.pop(); + + return reduceToSingleString(output, base, braces); +} + + +function formatPrimitive(ctx, value) { + if (isUndefined(value)) + return ctx.stylize('undefined', 'undefined'); + if (isString(value)) { + var simple = '\'' + JSON.stringify(value).replace(/^"|"$/g, '') + .replace(/'/g, "\\'") + .replace(/\\"/g, '"') + '\''; + return ctx.stylize(simple, 'string'); + } + if (isNumber(value)) + return ctx.stylize('' + value, 'number'); + if (isBoolean(value)) + return ctx.stylize('' + value, 'boolean'); + // For some reason typeof null is "object", so special case here. + if (isNull(value)) + return ctx.stylize('null', 'null'); +} + + +function formatError(value) { + return '[' + Error.prototype.toString.call(value) + ']'; +} + + +function formatArray(ctx, value, recurseTimes, visibleKeys, keys) { + var output = []; + for (var i = 0, l = value.length; i < l; ++i) { + if (hasOwnProperty(value, String(i))) { + output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, + String(i), true)); + } else { + output.push(''); + } + } + keys.forEach(function(key) { + if (!key.match(/^\d+$/)) { + output.push(formatProperty(ctx, value, recurseTimes, visibleKeys, + key, true)); + } + }); + return output; +} + + +function formatProperty(ctx, value, recurseTimes, visibleKeys, key, array) { + var name, str, desc; + desc = Object.getOwnPropertyDescriptor(value, key) || { value: value[key] }; + if (desc.get) { + if (desc.set) { + str = ctx.stylize('[Getter/Setter]', 'special'); + } else { + str = ctx.stylize('[Getter]', 'special'); + } + } else { + if (desc.set) { + str = ctx.stylize('[Setter]', 'special'); + } + } + if (!hasOwnProperty(visibleKeys, key)) { + name = '[' + key + ']'; + } + if (!str) { + if (ctx.seen.indexOf(desc.value) < 0) { + if (isNull(recurseTimes)) { + str = formatValue(ctx, desc.value, null); + } else { + str = formatValue(ctx, desc.value, recurseTimes - 1); + } + if (str.indexOf('\n') > -1) { + if (array) { + str = str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n').substr(2); + } else { + str = '\n' + str.split('\n').map(function(line) { + return ' ' + line; + }).join('\n'); + } + } + } else { + str = ctx.stylize('[Circular]', 'special'); + } + } + if (isUndefined(name)) { + if (array && key.match(/^\d+$/)) { + return str; + } + name = JSON.stringify('' + key); + if (name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)) { + name = name.substr(1, name.length - 2); + name = ctx.stylize(name, 'name'); + } else { + name = name.replace(/'/g, "\\'") + .replace(/\\"/g, '"') + .replace(/(^"|"$)/g, "'"); + name = ctx.stylize(name, 'string'); + } + } + + return name + ': ' + str; +} + + +function reduceToSingleString(output, base, braces) { + var numLinesEst = 0; + var length = output.reduce(function(prev, cur) { + numLinesEst++; + if (cur.indexOf('\n') >= 0) numLinesEst++; + return prev + cur.replace(/\u001b\[\d\d?m/g, '').length + 1; + }, 0); + + if (length > 60) { + return braces[0] + + (base === '' ? '' : base + '\n ') + + ' ' + + output.join(',\n ') + + ' ' + + braces[1]; + } + + return braces[0] + base + ' ' + output.join(', ') + ' ' + braces[1]; +} + + +// NOTE: These type checking functions intentionally don't use `instanceof` +// because it is fragile and can be easily faked with `Object.create()`. +function isArray(ar) { + return Array.isArray(ar); +} +exports.isArray = isArray; + +function isBoolean(arg) { + return typeof arg === 'boolean'; +} +exports.isBoolean = isBoolean; + +function isNull(arg) { + return arg === null; +} +exports.isNull = isNull; + +function isNullOrUndefined(arg) { + return arg == null; +} +exports.isNullOrUndefined = isNullOrUndefined; + +function isNumber(arg) { + return typeof arg === 'number'; +} +exports.isNumber = isNumber; + +function isString(arg) { + return typeof arg === 'string'; +} +exports.isString = isString; + +function isSymbol(arg) { + return typeof arg === 'symbol'; +} +exports.isSymbol = isSymbol; + +function isUndefined(arg) { + return arg === void 0; +} +exports.isUndefined = isUndefined; + +function isRegExp(re) { + return isObject(re) && objectToString(re) === '[object RegExp]'; +} +exports.isRegExp = isRegExp; + +function isObject(arg) { + return typeof arg === 'object' && arg !== null; +} +exports.isObject = isObject; + +function isDate(d) { + return isObject(d) && objectToString(d) === '[object Date]'; +} +exports.isDate = isDate; + +function isError(e) { + return isObject(e) && + (objectToString(e) === '[object Error]' || e instanceof Error); +} +exports.isError = isError; + +function isFunction(arg) { + return typeof arg === 'function'; +} +exports.isFunction = isFunction; + +function isPrimitive(arg) { + return arg === null || + typeof arg === 'boolean' || + typeof arg === 'number' || + typeof arg === 'string' || + typeof arg === 'symbol' || // ES6 symbol + typeof arg === 'undefined'; +} +exports.isPrimitive = isPrimitive; + +exports.isBuffer = require('./support/isBuffer'); + +function objectToString(o) { + return Object.prototype.toString.call(o); +} + + +function pad(n) { + return n < 10 ? '0' + n.toString(10) : n.toString(10); +} + + +var months = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', + 'Oct', 'Nov', 'Dec']; + +// 26 Feb 16:19:34 +function timestamp() { + var d = new Date(); + var time = [pad(d.getHours()), + pad(d.getMinutes()), + pad(d.getSeconds())].join(':'); + return [d.getDate(), months[d.getMonth()], time].join(' '); +} + + +// log is just a thin wrapper to console.log that prepends a timestamp +exports.log = function() { + console.log('%s - %s', timestamp(), exports.format.apply(exports, arguments)); +}; + + +/** + * Inherit the prototype methods from one constructor into another. + * + * The Function.prototype.inherits from lang.js rewritten as a standalone + * function (not on Function.prototype). NOTE: If this file is to be loaded + * during bootstrapping this function needs to be rewritten using some native + * functions as prototype setup using normal JavaScript does not work as + * expected during bootstrapping (see mirror.js in r114903). + * + * @param {function} ctor Constructor function which needs to inherit the + * prototype. + * @param {function} superCtor Constructor function to inherit prototype from. + */ +exports.inherits = require('inherits'); + +exports._extend = function(origin, add) { + // Don't do anything if add isn't an object + if (!add || !isObject(add)) return origin; + + var keys = Object.keys(add); + var i = keys.length; + while (i--) { + origin[keys[i]] = add[keys[i]]; + } + return origin; +}; + +function hasOwnProperty(obj, prop) { + return Object.prototype.hasOwnProperty.call(obj, prop); +} + +}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) +},{"./support/isBuffer":27,"_process":24,"inherits":26}],29:[function(require,module,exports){ +// Returns a wrapper function that returns a wrapped callback +// The wrapper function should do some stuff, and return a +// presumably different callback function. +// This makes sure that own properties are retained, so that +// decorations and such are not lost along the way. +module.exports = wrappy +function wrappy (fn, cb) { + if (fn && cb) return wrappy(fn)(cb) + + if (typeof fn !== 'function') + throw new TypeError('need wrapper function') + + Object.keys(fn).forEach(function (k) { + wrapper[k] = fn[k] + }) + + return wrapper + + function wrapper() { + var args = new Array(arguments.length) + for (var i = 0; i < args.length; i++) { + args[i] = arguments[i] + } + var ret = fn.apply(this, args) + var cb = args[args.length-1] + if (typeof ret === 'function' && ret !== cb) { + Object.keys(cb).forEach(function (k) { + ret[k] = cb[k] + }) + } + return ret + } +} + +},{}]},{},[7])(7) +}); \ No newline at end of file diff --git a/assets/javascripts/workers/search.2a1c317c.min.js b/assets/javascripts/workers/search.2a1c317c.min.js new file mode 100644 index 00000000..59bf8384 --- /dev/null +++ b/assets/javascripts/workers/search.2a1c317c.min.js @@ -0,0 +1,48 @@ +(()=>{var ge=Object.create;var W=Object.defineProperty,ye=Object.defineProperties,me=Object.getOwnPropertyDescriptor,ve=Object.getOwnPropertyDescriptors,xe=Object.getOwnPropertyNames,G=Object.getOwnPropertySymbols,Se=Object.getPrototypeOf,X=Object.prototype.hasOwnProperty,Qe=Object.prototype.propertyIsEnumerable;var J=(t,e,r)=>e in t?W(t,e,{enumerable:!0,configurable:!0,writable:!0,value:r}):t[e]=r,M=(t,e)=>{for(var r in e||(e={}))X.call(e,r)&&J(t,r,e[r]);if(G)for(var r of G(e))Qe.call(e,r)&&J(t,r,e[r]);return t},Z=(t,e)=>ye(t,ve(e));var K=(t,e)=>()=>(e||t((e={exports:{}}).exports,e),e.exports);var be=(t,e,r,n)=>{if(e&&typeof e=="object"||typeof e=="function")for(let i of xe(e))!X.call(t,i)&&i!==r&&W(t,i,{get:()=>e[i],enumerable:!(n=me(e,i))||n.enumerable});return t};var H=(t,e,r)=>(r=t!=null?ge(Se(t)):{},be(e||!t||!t.__esModule?W(r,"default",{value:t,enumerable:!0}):r,t));var z=(t,e,r)=>new Promise((n,i)=>{var s=u=>{try{a(r.next(u))}catch(c){i(c)}},o=u=>{try{a(r.throw(u))}catch(c){i(c)}},a=u=>u.done?n(u.value):Promise.resolve(u.value).then(s,o);a((r=r.apply(t,e)).next())});var re=K((ee,te)=>{/** + * lunr - http://lunrjs.com - A bit like Solr, but much smaller and not as bright - 2.3.9 + * Copyright (C) 2020 Oliver Nightingale + * @license MIT + */(function(){var t=function(e){var r=new t.Builder;return r.pipeline.add(t.trimmer,t.stopWordFilter,t.stemmer),r.searchPipeline.add(t.stemmer),e.call(r,r),r.build()};t.version="2.3.9";/*! + * lunr.utils + * Copyright (C) 2020 Oliver Nightingale + */t.utils={},t.utils.warn=function(e){return function(r){e.console&&console.warn&&console.warn(r)}}(this),t.utils.asString=function(e){return e==null?"":e.toString()},t.utils.clone=function(e){if(e==null)return e;for(var r=Object.create(null),n=Object.keys(e),i=0;i0){var h=t.utils.clone(r)||{};h.position=[a,c],h.index=s.length,s.push(new t.Token(n.slice(a,o),h))}a=o+1}}return s},t.tokenizer.separator=/[\s\-]+/;/*! + * lunr.Pipeline + * Copyright (C) 2020 Oliver Nightingale + */t.Pipeline=function(){this._stack=[]},t.Pipeline.registeredFunctions=Object.create(null),t.Pipeline.registerFunction=function(e,r){r in this.registeredFunctions&&t.utils.warn("Overwriting existing registered function: "+r),e.label=r,t.Pipeline.registeredFunctions[e.label]=e},t.Pipeline.warnIfFunctionNotRegistered=function(e){var r=e.label&&e.label in this.registeredFunctions;r||t.utils.warn(`Function is not registered with pipeline. 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this.pos1&&(e.backup(),e.emit(t.QueryLexer.TERM)),e.ignore(),e.more())return t.QueryLexer.lexText},t.QueryLexer.lexEditDistance=function(e){return e.ignore(),e.acceptDigitRun(),e.emit(t.QueryLexer.EDIT_DISTANCE),t.QueryLexer.lexText},t.QueryLexer.lexBoost=function(e){return e.ignore(),e.acceptDigitRun(),e.emit(t.QueryLexer.BOOST),t.QueryLexer.lexText},t.QueryLexer.lexEOS=function(e){e.width()>0&&e.emit(t.QueryLexer.TERM)},t.QueryLexer.termSeparator=t.tokenizer.separator,t.QueryLexer.lexText=function(e){for(;;){var r=e.next();if(r==t.QueryLexer.EOS)return t.QueryLexer.lexEOS;if(r.charCodeAt(0)==92){e.escapeCharacter();continue}if(r==":")return t.QueryLexer.lexField;if(r=="~")return e.backup(),e.width()>0&&e.emit(t.QueryLexer.TERM),t.QueryLexer.lexEditDistance;if(r=="^")return e.backup(),e.width()>0&&e.emit(t.QueryLexer.TERM),t.QueryLexer.lexBoost;if(r=="+"&&e.width()===1||r=="-"&&e.width()===1)return e.emit(t.QueryLexer.PRESENCE),t.QueryLexer.lexText;if(r.match(t.QueryLexer.termSeparator))return t.QueryLexer.lexTerm}},t.QueryParser=function(e,r){this.lexer=new t.QueryLexer(e),this.query=r,this.currentClause={},this.lexemeIdx=0},t.QueryParser.prototype.parse=function(){this.lexer.run(),this.lexemes=this.lexer.lexemes;for(var e=t.QueryParser.parseClause;e;)e=e(this);return this.query},t.QueryParser.prototype.peekLexeme=function(){return this.lexemes[this.lexemeIdx]},t.QueryParser.prototype.consumeLexeme=function(){var e=this.peekLexeme();return this.lexemeIdx+=1,e},t.QueryParser.prototype.nextClause=function(){var e=this.currentClause;this.query.clause(e),this.currentClause={}},t.QueryParser.parseClause=function(e){var r=e.peekLexeme();if(r!=null)switch(r.type){case t.QueryLexer.PRESENCE:return t.QueryParser.parsePresence;case t.QueryLexer.FIELD:return t.QueryParser.parseField;case t.QueryLexer.TERM:return t.QueryParser.parseTerm;default:var n="expected either a field or a term, found "+r.type;throw r.str.length>=1&&(n+=" with value '"+r.str+"'"),new t.QueryParseError(n,r.start,r.end)}},t.QueryParser.parsePresence=function(e){var r=e.consumeLexeme();if(r!=null){switch(r.str){case"-":e.currentClause.presence=t.Query.presence.PROHIBITED;break;case"+":e.currentClause.presence=t.Query.presence.REQUIRED;break;default:var n="unrecognised presence operator'"+r.str+"'";throw new t.QueryParseError(n,r.start,r.end)}var i=e.peekLexeme();if(i==null){var n="expecting term or field, found nothing";throw new t.QueryParseError(n,r.start,r.end)}switch(i.type){case t.QueryLexer.FIELD:return t.QueryParser.parseField;case t.QueryLexer.TERM:return t.QueryParser.parseTerm;default:var n="expecting term or field, found '"+i.type+"'";throw new t.QueryParseError(n,i.start,i.end)}}},t.QueryParser.parseField=function(e){var r=e.consumeLexeme();if(r!=null){if(e.query.allFields.indexOf(r.str)==-1){var n=e.query.allFields.map(function(o){return"'"+o+"'"}).join(", "),i="unrecognised field '"+r.str+"', possible fields: "+n;throw new t.QueryParseError(i,r.start,r.end)}e.currentClause.fields=[r.str];var s=e.peekLexeme();if(s==null){var i="expecting term, found nothing";throw new t.QueryParseError(i,r.start,r.end)}switch(s.type){case t.QueryLexer.TERM:return t.QueryParser.parseTerm;default:var i="expecting term, found '"+s.type+"'";throw new t.QueryParseError(i,s.start,s.end)}}},t.QueryParser.parseTerm=function(e){var r=e.consumeLexeme();if(r!=null){e.currentClause.term=r.str.toLowerCase(),r.str.indexOf("*")!=-1&&(e.currentClause.usePipeline=!1);var n=e.peekLexeme();if(n==null){e.nextClause();return}switch(n.type){case t.QueryLexer.TERM:return e.nextClause(),t.QueryParser.parseTerm;case t.QueryLexer.FIELD:return e.nextClause(),t.QueryParser.parseField;case t.QueryLexer.EDIT_DISTANCE:return t.QueryParser.parseEditDistance;case t.QueryLexer.BOOST:return t.QueryParser.parseBoost;case t.QueryLexer.PRESENCE:return e.nextClause(),t.QueryParser.parsePresence;default:var i="Unexpected lexeme type '"+n.type+"'";throw new t.QueryParseError(i,n.start,n.end)}}},t.QueryParser.parseEditDistance=function(e){var r=e.consumeLexeme();if(r!=null){var n=parseInt(r.str,10);if(isNaN(n)){var i="edit distance must be numeric";throw new t.QueryParseError(i,r.start,r.end)}e.currentClause.editDistance=n;var s=e.peekLexeme();if(s==null){e.nextClause();return}switch(s.type){case t.QueryLexer.TERM:return e.nextClause(),t.QueryParser.parseTerm;case t.QueryLexer.FIELD:return e.nextClause(),t.QueryParser.parseField;case t.QueryLexer.EDIT_DISTANCE:return t.QueryParser.parseEditDistance;case t.QueryLexer.BOOST:return t.QueryParser.parseBoost;case t.QueryLexer.PRESENCE:return e.nextClause(),t.QueryParser.parsePresence;default:var i="Unexpected lexeme type '"+s.type+"'";throw new t.QueryParseError(i,s.start,s.end)}}},t.QueryParser.parseBoost=function(e){var r=e.consumeLexeme();if(r!=null){var n=parseInt(r.str,10);if(isNaN(n)){var i="boost must be numeric";throw new t.QueryParseError(i,r.start,r.end)}e.currentClause.boost=n;var s=e.peekLexeme();if(s==null){e.nextClause();return}switch(s.type){case t.QueryLexer.TERM:return e.nextClause(),t.QueryParser.parseTerm;case t.QueryLexer.FIELD:return e.nextClause(),t.QueryParser.parseField;case t.QueryLexer.EDIT_DISTANCE:return t.QueryParser.parseEditDistance;case t.QueryLexer.BOOST:return t.QueryParser.parseBoost;case t.QueryLexer.PRESENCE:return e.nextClause(),t.QueryParser.parsePresence;default:var i="Unexpected lexeme type '"+s.type+"'";throw new t.QueryParseError(i,s.start,s.end)}}},function(e,r){typeof define=="function"&&define.amd?define(r):typeof ee=="object"?te.exports=r():e.lunr=r()}(this,function(){return t})})()});var q=K((Re,ne)=>{"use strict";/*! + * escape-html + * Copyright(c) 2012-2013 TJ Holowaychuk + * Copyright(c) 2015 Andreas Lubbe + * Copyright(c) 2015 Tiancheng "Timothy" Gu + * MIT Licensed + */var Le=/["'&<>]/;ne.exports=we;function we(t){var e=""+t,r=Le.exec(e);if(!r)return e;var n,i="",s=0,o=0;for(s=r.index;s=0;r--){let n=t[r];typeof n!="object"?n=document.createTextNode(n):n.parentNode&&n.parentNode.removeChild(n),r?e.insertBefore(this.previousSibling,n):e.replaceChild(n,this)}}}));var ie=H(q());function se(t){let e=new Map,r=new Set;for(let n of t){let[i,s]=n.location.split("#"),o=n.location,a=n.title,u=n.tags,c=(0,ie.default)(n.text).replace(/\s+(?=[,.:;!?])/g,"").replace(/\s+/g," ");if(s){let h=e.get(i);r.has(h)?e.set(o,{location:o,title:a,text:c,parent:h}):(h.title=n.title,h.text=c,r.add(h))}else e.set(o,M({location:o,title:a,text:c},u&&{tags:u}))}return e}var oe=H(q());function ae(t,e){let r=new RegExp(t.separator,"img"),n=(i,s,o)=>`${s}${o}`;return i=>{i=i.replace(/[\s*+\-:~^]+/g," ").trim();let s=new RegExp(`(^|${t.separator})(${i.replace(/[|\\{}()[\]^$+*?.-]/g,"\\$&").replace(r,"|")})`,"img");return o=>(e?(0,oe.default)(o):o).replace(s,n).replace(/<\/mark>(\s+)]*>/img,"$1")}}function ue(t){let e=new lunr.Query(["title","text"]);return new lunr.QueryParser(t,e).parse(),e.clauses}function ce(t,e){var i;let r=new Set(t),n={};for(let s=0;s!n.has(i)))]}var U=class{constructor({config:e,docs:r,options:n}){this.options=n,this.documents=se(r),this.highlight=ae(e,!1),lunr.tokenizer.separator=new RegExp(e.separator),this.index=lunr(function(){e.lang.length===1&&e.lang[0]!=="en"?this.use(lunr[e.lang[0]]):e.lang.length>1&&this.use(lunr.multiLanguage(...e.lang));let i=Ee(["trimmer","stopWordFilter","stemmer"],n.pipeline);for(let s of e.lang.map(o=>o==="en"?lunr:lunr[o]))for(let o of i)this.pipeline.remove(s[o]),this.searchPipeline.remove(s[o]);this.ref("location"),this.field("title",{boost:1e3}),this.field("text"),this.field("tags",{boost:1e6});for(let s of r)this.add(s)})}search(e){if(e)try{let r=this.highlight(e),n=ue(e).filter(o=>o.presence!==lunr.Query.presence.PROHIBITED),i=this.index.search(`${e}*`).reduce((o,{ref:a,score:u,matchData:c})=>{let h=this.documents.get(a);if(typeof h!="undefined"){let{location:y,title:g,text:b,tags:m,parent:Q}=h,p=ce(n,Object.keys(c.metadata)),d=+!Q+ +Object.values(p).every(w=>w);o.push(Z(M({location:y,title:r(g),text:r(b)},m&&{tags:m.map(r)}),{score:u*(1+d),terms:p}))}return o},[]).sort((o,a)=>a.score-o.score).reduce((o,a)=>{let u=this.documents.get(a.location);if(typeof u!="undefined"){let c="parent"in u?u.parent.location:u.location;o.set(c,[...o.get(c)||[],a])}return o},new Map),s;if(this.options.suggestions){let o=this.index.query(a=>{for(let u of n)a.term(u.term,{fields:["title"],presence:lunr.Query.presence.REQUIRED,wildcard:lunr.Query.wildcard.TRAILING})});s=o.length?Object.keys(o[0].matchData.metadata):[]}return M({items:[...i.values()]},typeof s!="undefined"&&{suggestions:s})}catch(r){console.warn(`Invalid query: ${e} \u2013 see https://bit.ly/2s3ChXG`)}return{items:[]}}};var Y;function ke(t){return z(this,null,function*(){let e="../lunr";if(typeof parent!="undefined"&&"IFrameWorker"in parent){let n=document.querySelector("script[src]"),[i]=n.src.split("/worker");e=e.replace("..",i)}let r=[];for(let n of t.lang){switch(n){case"ja":r.push(`${e}/tinyseg.js`);break;case"hi":case"th":r.push(`${e}/wordcut.js`);break}n!=="en"&&r.push(`${e}/min/lunr.${n}.min.js`)}t.lang.length>1&&r.push(`${e}/min/lunr.multi.min.js`),r.length&&(yield importScripts(`${e}/min/lunr.stemmer.support.min.js`,...r))})}function Te(t){return z(this,null,function*(){switch(t.type){case 0:return yield ke(t.data.config),Y=new U(t.data),{type:1};case 2:return{type:3,data:Y?Y.search(t.data):{items:[]}};default:throw new TypeError("Invalid message type")}})}self.lunr=le.default;addEventListener("message",t=>z(void 0,null,function*(){postMessage(yield Te(t.data))}));})(); +//# sourceMappingURL=search.2a1c317c.min.js.map + diff --git a/assets/javascripts/workers/search.2a1c317c.min.js.map b/assets/javascripts/workers/search.2a1c317c.min.js.map new file mode 100644 index 00000000..06d43304 --- /dev/null +++ b/assets/javascripts/workers/search.2a1c317c.min.js.map @@ -0,0 +1,8 @@ +{ + "version": 3, + "sources": ["node_modules/lunr/lunr.js", "node_modules/escape-html/index.js", "src/assets/javascripts/integrations/search/worker/main/index.ts", "src/assets/javascripts/polyfills/index.ts", "src/assets/javascripts/integrations/search/document/index.ts", "src/assets/javascripts/integrations/search/highlighter/index.ts", "src/assets/javascripts/integrations/search/query/_/index.ts", "src/assets/javascripts/integrations/search/_/index.ts"], + "sourceRoot": "../../../..", + "sourcesContent": ["/**\n * lunr - http://lunrjs.com - A bit like Solr, but much smaller and not as bright - 2.3.9\n * Copyright (C) 2020 Oliver Nightingale\n * @license MIT\n */\n\n;(function(){\n\n/**\n * A convenience function for configuring and constructing\n * a new lunr Index.\n *\n * A lunr.Builder instance is created and the pipeline setup\n * with a trimmer, stop word filter and stemmer.\n *\n * This builder object is yielded to the configuration function\n * that is passed as a parameter, allowing the list of fields\n * and other builder parameters to be customised.\n *\n * All documents _must_ be added within the passed config function.\n *\n * @example\n * var idx = lunr(function () {\n * this.field('title')\n * this.field('body')\n * this.ref('id')\n *\n * documents.forEach(function (doc) {\n * this.add(doc)\n * }, this)\n * })\n *\n * @see {@link lunr.Builder}\n * @see {@link lunr.Pipeline}\n * @see {@link lunr.trimmer}\n * @see {@link lunr.stopWordFilter}\n * @see {@link lunr.stemmer}\n * @namespace {function} lunr\n */\nvar lunr = function (config) {\n var builder = new lunr.Builder\n\n builder.pipeline.add(\n lunr.trimmer,\n lunr.stopWordFilter,\n lunr.stemmer\n )\n\n builder.searchPipeline.add(\n lunr.stemmer\n )\n\n config.call(builder, builder)\n return builder.build()\n}\n\nlunr.version = \"2.3.9\"\n/*!\n * lunr.utils\n * Copyright (C) 2020 Oliver Nightingale\n */\n\n/**\n * A namespace containing utils for the rest of the lunr library\n * @namespace lunr.utils\n */\nlunr.utils = {}\n\n/**\n * Print a warning message to the console.\n *\n * @param {String} message The message to be printed.\n * @memberOf lunr.utils\n * @function\n */\nlunr.utils.warn = (function (global) {\n /* eslint-disable no-console */\n return function (message) {\n if (global.console && console.warn) {\n console.warn(message)\n }\n }\n /* eslint-enable no-console */\n})(this)\n\n/**\n * Convert an object to a string.\n *\n * In the case of `null` and `undefined` the function returns\n * the empty string, in all other cases the result of calling\n * `toString` on the passed object is returned.\n *\n * @param {Any} obj The object to convert to a string.\n * @return {String} string representation of the passed object.\n * @memberOf lunr.utils\n */\nlunr.utils.asString = function (obj) {\n if (obj === void 0 || obj === null) {\n return \"\"\n } else {\n return obj.toString()\n }\n}\n\n/**\n * Clones an object.\n *\n * Will create a copy of an existing object such that any mutations\n * on the copy cannot affect the original.\n *\n * Only shallow objects are supported, passing a nested object to this\n * function will cause a TypeError.\n *\n * Objects with primitives, and arrays of primitives are supported.\n *\n * @param {Object} obj The object to clone.\n * @return {Object} a clone of the passed object.\n * @throws {TypeError} when a nested object is passed.\n * @memberOf Utils\n */\nlunr.utils.clone = function (obj) {\n if (obj === null || obj === undefined) {\n return obj\n }\n\n var clone = Object.create(null),\n keys = Object.keys(obj)\n\n for (var i = 0; i < keys.length; i++) {\n var key = keys[i],\n val = obj[key]\n\n if (Array.isArray(val)) {\n clone[key] = val.slice()\n continue\n }\n\n if (typeof val === 'string' ||\n typeof val === 'number' ||\n typeof val === 'boolean') {\n clone[key] = val\n continue\n }\n\n throw new TypeError(\"clone is not deep and does not support nested objects\")\n }\n\n return clone\n}\nlunr.FieldRef = function (docRef, fieldName, stringValue) {\n this.docRef = docRef\n this.fieldName = fieldName\n this._stringValue = stringValue\n}\n\nlunr.FieldRef.joiner = \"/\"\n\nlunr.FieldRef.fromString = function (s) {\n var n = s.indexOf(lunr.FieldRef.joiner)\n\n if (n === -1) {\n throw \"malformed field ref string\"\n }\n\n var fieldRef = s.slice(0, n),\n docRef = s.slice(n + 1)\n\n return new lunr.FieldRef (docRef, fieldRef, s)\n}\n\nlunr.FieldRef.prototype.toString = function () {\n if (this._stringValue == undefined) {\n this._stringValue = this.fieldName + lunr.FieldRef.joiner + this.docRef\n }\n\n return this._stringValue\n}\n/*!\n * lunr.Set\n * Copyright (C) 2020 Oliver Nightingale\n */\n\n/**\n * A lunr set.\n *\n * @constructor\n */\nlunr.Set = function (elements) {\n this.elements = Object.create(null)\n\n if (elements) {\n this.length = elements.length\n\n for (var i = 0; i < this.length; i++) {\n this.elements[elements[i]] = true\n }\n } else {\n this.length = 0\n }\n}\n\n/**\n * A complete set that contains all elements.\n *\n * @static\n * @readonly\n * @type {lunr.Set}\n */\nlunr.Set.complete = {\n intersect: function (other) {\n return other\n },\n\n union: function () {\n return this\n },\n\n contains: function () {\n return true\n }\n}\n\n/**\n * An empty set that contains no elements.\n *\n * @static\n * @readonly\n * @type {lunr.Set}\n */\nlunr.Set.empty = {\n intersect: function () {\n return this\n },\n\n union: function (other) {\n return other\n },\n\n contains: function () {\n return false\n }\n}\n\n/**\n * Returns true if this set contains the specified object.\n *\n * @param {object} object - Object whose presence in this set is to be tested.\n * @returns {boolean} - True if this set contains the specified object.\n */\nlunr.Set.prototype.contains = function (object) {\n return !!this.elements[object]\n}\n\n/**\n * Returns a new set containing only the elements that are present in both\n * this set and the specified set.\n *\n * @param {lunr.Set} other - set to intersect with this set.\n * @returns {lunr.Set} a new set that is the intersection of this and the specified set.\n */\n\nlunr.Set.prototype.intersect = function (other) {\n var a, b, elements, intersection = []\n\n if (other === lunr.Set.complete) {\n return this\n }\n\n if (other === lunr.Set.empty) {\n return other\n }\n\n if (this.length < other.length) {\n a = this\n b = other\n } else {\n a = other\n b = this\n }\n\n elements = Object.keys(a.elements)\n\n for (var i = 0; i < elements.length; i++) {\n var element = elements[i]\n if (element in b.elements) {\n intersection.push(element)\n }\n }\n\n return new lunr.Set (intersection)\n}\n\n/**\n * Returns a new set combining the elements of this and the specified set.\n *\n * @param {lunr.Set} other - set to union with this set.\n * @return {lunr.Set} a new set that is the union of this and the specified set.\n */\n\nlunr.Set.prototype.union = function (other) {\n if (other === lunr.Set.complete) {\n return lunr.Set.complete\n }\n\n if (other === lunr.Set.empty) {\n return this\n }\n\n return new lunr.Set(Object.keys(this.elements).concat(Object.keys(other.elements)))\n}\n/**\n * A function to calculate the inverse document frequency for\n * a posting. This is shared between the builder and the index\n *\n * @private\n * @param {object} posting - The posting for a given term\n * @param {number} documentCount - The total number of documents.\n */\nlunr.idf = function (posting, documentCount) {\n var documentsWithTerm = 0\n\n for (var fieldName in posting) {\n if (fieldName == '_index') continue // Ignore the term index, its not a field\n documentsWithTerm += Object.keys(posting[fieldName]).length\n }\n\n var x = (documentCount - documentsWithTerm + 0.5) / (documentsWithTerm + 0.5)\n\n return Math.log(1 + Math.abs(x))\n}\n\n/**\n * A token wraps a string representation of a token\n * as it is passed through the text processing pipeline.\n *\n * @constructor\n * @param {string} [str=''] - The string token being wrapped.\n * @param {object} [metadata={}] - Metadata associated with this token.\n */\nlunr.Token = function (str, metadata) {\n this.str = str || \"\"\n this.metadata = metadata || {}\n}\n\n/**\n * Returns the token string that is being wrapped by this object.\n *\n * @returns {string}\n */\nlunr.Token.prototype.toString = function () {\n return this.str\n}\n\n/**\n * A token update function is used when updating or optionally\n * when cloning a token.\n *\n * @callback lunr.Token~updateFunction\n * @param {string} str - The string representation of the token.\n * @param {Object} metadata - All metadata associated with this token.\n */\n\n/**\n * Applies the given function to the wrapped string token.\n *\n * @example\n * token.update(function (str, metadata) {\n * return str.toUpperCase()\n * })\n *\n * @param {lunr.Token~updateFunction} fn - A function to apply to the token string.\n * @returns {lunr.Token}\n */\nlunr.Token.prototype.update = function (fn) {\n this.str = fn(this.str, this.metadata)\n return this\n}\n\n/**\n * Creates a clone of this token. Optionally a function can be\n * applied to the cloned token.\n *\n * @param {lunr.Token~updateFunction} [fn] - An optional function to apply to the cloned token.\n * @returns {lunr.Token}\n */\nlunr.Token.prototype.clone = function (fn) {\n fn = fn || function (s) { return s }\n return new lunr.Token (fn(this.str, this.metadata), this.metadata)\n}\n/*!\n * lunr.tokenizer\n * Copyright (C) 2020 Oliver Nightingale\n */\n\n/**\n * A function for splitting a string into tokens ready to be inserted into\n * the search index. Uses `lunr.tokenizer.separator` to split strings, change\n * the value of this property to change how strings are split into tokens.\n *\n * This tokenizer will convert its parameter to a string by calling `toString` and\n * then will split this string on the character in `lunr.tokenizer.separator`.\n * Arrays will have their elements converted to strings and wrapped in a lunr.Token.\n *\n * Optional metadata can be passed to the tokenizer, this metadata will be cloned and\n * added as metadata to every token that is created from the object to be tokenized.\n *\n * @static\n * @param {?(string|object|object[])} obj - The object to convert into tokens\n * @param {?object} metadata - Optional metadata to associate with every token\n * @returns {lunr.Token[]}\n * @see {@link lunr.Pipeline}\n */\nlunr.tokenizer = function (obj, metadata) {\n if (obj == null || obj == undefined) {\n return []\n }\n\n if (Array.isArray(obj)) {\n return obj.map(function (t) {\n return new lunr.Token(\n lunr.utils.asString(t).toLowerCase(),\n lunr.utils.clone(metadata)\n )\n })\n }\n\n var str = obj.toString().toLowerCase(),\n len = str.length,\n tokens = []\n\n for (var sliceEnd = 0, sliceStart = 0; sliceEnd <= len; sliceEnd++) {\n var char = str.charAt(sliceEnd),\n sliceLength = sliceEnd - sliceStart\n\n if ((char.match(lunr.tokenizer.separator) || sliceEnd == len)) {\n\n if (sliceLength > 0) {\n var tokenMetadata = lunr.utils.clone(metadata) || {}\n tokenMetadata[\"position\"] = [sliceStart, sliceLength]\n tokenMetadata[\"index\"] = tokens.length\n\n tokens.push(\n new lunr.Token (\n str.slice(sliceStart, sliceEnd),\n tokenMetadata\n )\n )\n }\n\n sliceStart = sliceEnd + 1\n }\n\n }\n\n return tokens\n}\n\n/**\n * The separator used to split a string into tokens. Override this property to change the behaviour of\n * `lunr.tokenizer` behaviour when tokenizing strings. By default this splits on whitespace and hyphens.\n *\n * @static\n * @see lunr.tokenizer\n */\nlunr.tokenizer.separator = /[\\s\\-]+/\n/*!\n * lunr.Pipeline\n * Copyright (C) 2020 Oliver Nightingale\n */\n\n/**\n * lunr.Pipelines maintain an ordered list of functions to be applied to all\n * tokens in documents entering the search index and queries being ran against\n * the index.\n *\n * An instance of lunr.Index created with the lunr shortcut will contain a\n * pipeline with a stop word filter and an English language stemmer. Extra\n * functions can be added before or after either of these functions or these\n * default functions can be removed.\n *\n * When run the pipeline will call each function in turn, passing a token, the\n * index of that token in the original list of all tokens and finally a list of\n * all the original tokens.\n *\n * The output of functions in the pipeline will be passed to the next function\n * in the pipeline. To exclude a token from entering the index the function\n * should return undefined, the rest of the pipeline will not be called with\n * this token.\n *\n * For serialisation of pipelines to work, all functions used in an instance of\n * a pipeline should be registered with lunr.Pipeline. Registered functions can\n * then be loaded. If trying to load a serialised pipeline that uses functions\n * that are not registered an error will be thrown.\n *\n * If not planning on serialising the pipeline then registering pipeline functions\n * is not necessary.\n *\n * @constructor\n */\nlunr.Pipeline = function () {\n this._stack = []\n}\n\nlunr.Pipeline.registeredFunctions = Object.create(null)\n\n/**\n * A pipeline function maps lunr.Token to lunr.Token. A lunr.Token contains the token\n * string as well as all known metadata. A pipeline function can mutate the token string\n * or mutate (or add) metadata for a given token.\n *\n * A pipeline function can indicate that the passed token should be discarded by returning\n * null, undefined or an empty string. This token will not be passed to any downstream pipeline\n * functions and will not be added to the index.\n *\n * Multiple tokens can be returned by returning an array of tokens. Each token will be passed\n * to any downstream pipeline functions and all will returned tokens will be added to the index.\n *\n * Any number of pipeline functions may be chained together using a lunr.Pipeline.\n *\n * @interface lunr.PipelineFunction\n * @param {lunr.Token} token - A token from the document being processed.\n * @param {number} i - The index of this token in the complete list of tokens for this document/field.\n * @param {lunr.Token[]} tokens - All tokens for this document/field.\n * @returns {(?lunr.Token|lunr.Token[])}\n */\n\n/**\n * Register a function with the pipeline.\n *\n * Functions that are used in the pipeline should be registered if the pipeline\n * needs to be serialised, or a serialised pipeline needs to be loaded.\n *\n * Registering a function does not add it to a pipeline, functions must still be\n * added to instances of the pipeline for them to be used when running a pipeline.\n *\n * @param {lunr.PipelineFunction} fn - The function to check for.\n * @param {String} label - The label to register this function with\n */\nlunr.Pipeline.registerFunction = function (fn, label) {\n if (label in this.registeredFunctions) {\n lunr.utils.warn('Overwriting existing registered function: ' + label)\n }\n\n fn.label = label\n lunr.Pipeline.registeredFunctions[fn.label] = fn\n}\n\n/**\n * Warns if the function is not registered as a Pipeline function.\n *\n * @param {lunr.PipelineFunction} fn - The function to check for.\n * @private\n */\nlunr.Pipeline.warnIfFunctionNotRegistered = function (fn) {\n var isRegistered = fn.label && (fn.label in this.registeredFunctions)\n\n if (!isRegistered) {\n lunr.utils.warn('Function is not registered with pipeline. This may cause problems when serialising the index.\\n', fn)\n }\n}\n\n/**\n * Loads a previously serialised pipeline.\n *\n * All functions to be loaded must already be registered with lunr.Pipeline.\n * If any function from the serialised data has not been registered then an\n * error will be thrown.\n *\n * @param {Object} serialised - The serialised pipeline to load.\n * @returns {lunr.Pipeline}\n */\nlunr.Pipeline.load = function (serialised) {\n var pipeline = new lunr.Pipeline\n\n serialised.forEach(function (fnName) {\n var fn = lunr.Pipeline.registeredFunctions[fnName]\n\n if (fn) {\n pipeline.add(fn)\n } else {\n throw new Error('Cannot load unregistered function: ' + fnName)\n }\n })\n\n return pipeline\n}\n\n/**\n * Adds new functions to the end of the pipeline.\n *\n * Logs a warning if the function has not been registered.\n *\n * @param {lunr.PipelineFunction[]} functions - Any number of functions to add to the pipeline.\n */\nlunr.Pipeline.prototype.add = function () {\n var fns = Array.prototype.slice.call(arguments)\n\n fns.forEach(function (fn) {\n lunr.Pipeline.warnIfFunctionNotRegistered(fn)\n this._stack.push(fn)\n }, this)\n}\n\n/**\n * Adds a single function after a function that already exists in the\n * pipeline.\n *\n * Logs a warning if the function has not been registered.\n *\n * @param {lunr.PipelineFunction} existingFn - A function that already exists in the pipeline.\n * @param {lunr.PipelineFunction} newFn - The new function to add to the pipeline.\n */\nlunr.Pipeline.prototype.after = function (existingFn, newFn) {\n lunr.Pipeline.warnIfFunctionNotRegistered(newFn)\n\n var pos = this._stack.indexOf(existingFn)\n if (pos == -1) {\n throw new Error('Cannot find existingFn')\n }\n\n pos = pos + 1\n this._stack.splice(pos, 0, newFn)\n}\n\n/**\n * Adds a single function before a function that already exists in the\n * pipeline.\n *\n * Logs a warning if the function has not been registered.\n *\n * @param {lunr.PipelineFunction} existingFn - A function that already exists in the pipeline.\n * @param {lunr.PipelineFunction} newFn - The new function to add to the pipeline.\n */\nlunr.Pipeline.prototype.before = function (existingFn, newFn) {\n lunr.Pipeline.warnIfFunctionNotRegistered(newFn)\n\n var pos = this._stack.indexOf(existingFn)\n if (pos == -1) {\n throw new Error('Cannot find existingFn')\n }\n\n this._stack.splice(pos, 0, newFn)\n}\n\n/**\n * Removes a function from the pipeline.\n *\n * @param {lunr.PipelineFunction} fn The function to remove from the pipeline.\n */\nlunr.Pipeline.prototype.remove = function (fn) {\n var pos = this._stack.indexOf(fn)\n if (pos == -1) {\n return\n }\n\n this._stack.splice(pos, 1)\n}\n\n/**\n * Runs the current list of functions that make up the pipeline against the\n * passed tokens.\n *\n * @param {Array} tokens The tokens to run through the pipeline.\n * @returns {Array}\n */\nlunr.Pipeline.prototype.run = function (tokens) {\n var stackLength = this._stack.length\n\n for (var i = 0; i < stackLength; i++) {\n var fn = this._stack[i]\n var memo = []\n\n for (var j = 0; j < tokens.length; j++) {\n var result = fn(tokens[j], j, tokens)\n\n if (result === null || result === void 0 || result === '') continue\n\n if (Array.isArray(result)) {\n for (var k = 0; k < result.length; k++) {\n memo.push(result[k])\n }\n } else {\n memo.push(result)\n }\n }\n\n tokens = memo\n }\n\n return tokens\n}\n\n/**\n * Convenience method for passing a string through a pipeline and getting\n * strings out. This method takes care of wrapping the passed string in a\n * token and mapping the resulting tokens back to strings.\n *\n * @param {string} str - The string to pass through the pipeline.\n * @param {?object} metadata - Optional metadata to associate with the token\n * passed to the pipeline.\n * @returns {string[]}\n */\nlunr.Pipeline.prototype.runString = function (str, metadata) {\n var token = new lunr.Token (str, metadata)\n\n return this.run([token]).map(function (t) {\n return t.toString()\n })\n}\n\n/**\n * Resets the pipeline by removing any existing processors.\n *\n */\nlunr.Pipeline.prototype.reset = function () {\n this._stack = []\n}\n\n/**\n * Returns a representation of the pipeline ready for serialisation.\n *\n * Logs a warning if the function has not been registered.\n *\n * @returns {Array}\n */\nlunr.Pipeline.prototype.toJSON = function () {\n return this._stack.map(function (fn) {\n lunr.Pipeline.warnIfFunctionNotRegistered(fn)\n\n return fn.label\n })\n}\n/*!\n * lunr.Vector\n * Copyright (C) 2020 Oliver Nightingale\n */\n\n/**\n * A vector is used to construct the vector space of documents and queries. These\n * vectors support operations to determine the similarity between two documents or\n * a document and a query.\n *\n * Normally no parameters are required for initializing a vector, but in the case of\n * loading a previously dumped vector the raw elements can be provided to the constructor.\n *\n * For performance reasons vectors are implemented with a flat array, where an elements\n * index is immediately followed by its value. E.g. [index, value, index, value]. This\n * allows the underlying array to be as sparse as possible and still offer decent\n * performance when being used for vector calculations.\n *\n * @constructor\n * @param {Number[]} [elements] - The flat list of element index and element value pairs.\n */\nlunr.Vector = function (elements) {\n this._magnitude = 0\n this.elements = elements || []\n}\n\n\n/**\n * Calculates the position within the vector to insert a given index.\n *\n * This is used internally by insert and upsert. If there are duplicate indexes then\n * the position is returned as if the value for that index were to be updated, but it\n * is the callers responsibility to check whether there is a duplicate at that index\n *\n * @param {Number} insertIdx - The index at which the element should be inserted.\n * @returns {Number}\n */\nlunr.Vector.prototype.positionForIndex = function (index) {\n // For an empty vector the tuple can be inserted at the beginning\n if (this.elements.length == 0) {\n return 0\n }\n\n var start = 0,\n end = this.elements.length / 2,\n sliceLength = end - start,\n pivotPoint = Math.floor(sliceLength / 2),\n pivotIndex = this.elements[pivotPoint * 2]\n\n while (sliceLength > 1) {\n if (pivotIndex < index) {\n start = pivotPoint\n }\n\n if (pivotIndex > index) {\n end = pivotPoint\n }\n\n if (pivotIndex == index) {\n break\n }\n\n sliceLength = end - start\n pivotPoint = start + Math.floor(sliceLength / 2)\n pivotIndex = this.elements[pivotPoint * 2]\n }\n\n if (pivotIndex == index) {\n return pivotPoint * 2\n }\n\n if (pivotIndex > index) {\n return pivotPoint * 2\n }\n\n if (pivotIndex < index) {\n return (pivotPoint + 1) * 2\n }\n}\n\n/**\n * Inserts an element at an index within the vector.\n *\n * Does not allow duplicates, will throw an error if there is already an entry\n * for this index.\n *\n * @param {Number} insertIdx - The index at which the element should be inserted.\n * @param {Number} val - The value to be inserted into the vector.\n */\nlunr.Vector.prototype.insert = function (insertIdx, val) {\n this.upsert(insertIdx, val, function () {\n throw \"duplicate index\"\n })\n}\n\n/**\n * Inserts or updates an existing index within the vector.\n *\n * @param {Number} insertIdx - The index at which the element should be inserted.\n * @param {Number} val - The value to be inserted into the vector.\n * @param {function} fn - A function that is called for updates, the existing value and the\n * requested value are passed as arguments\n */\nlunr.Vector.prototype.upsert = function (insertIdx, val, fn) {\n this._magnitude = 0\n var position = this.positionForIndex(insertIdx)\n\n if (this.elements[position] == insertIdx) {\n this.elements[position + 1] = fn(this.elements[position + 1], val)\n } else {\n this.elements.splice(position, 0, insertIdx, val)\n }\n}\n\n/**\n * Calculates the magnitude of this vector.\n *\n * @returns {Number}\n */\nlunr.Vector.prototype.magnitude = function () {\n if (this._magnitude) return this._magnitude\n\n var sumOfSquares = 0,\n elementsLength = this.elements.length\n\n for (var i = 1; i < elementsLength; i += 2) {\n var val = this.elements[i]\n sumOfSquares += val * val\n }\n\n return this._magnitude = Math.sqrt(sumOfSquares)\n}\n\n/**\n * Calculates the dot product of this vector and another vector.\n *\n * @param {lunr.Vector} otherVector - The vector to compute the dot product with.\n * @returns {Number}\n */\nlunr.Vector.prototype.dot = function (otherVector) {\n var dotProduct = 0,\n a = this.elements, b = otherVector.elements,\n aLen = a.length, bLen = b.length,\n aVal = 0, bVal = 0,\n i = 0, j = 0\n\n while (i < aLen && j < bLen) {\n aVal = a[i], bVal = b[j]\n if (aVal < bVal) {\n i += 2\n } else if (aVal > bVal) {\n j += 2\n } else if (aVal == bVal) {\n dotProduct += a[i + 1] * b[j + 1]\n i += 2\n j += 2\n }\n }\n\n return dotProduct\n}\n\n/**\n * Calculates the similarity between this vector and another vector.\n *\n * @param {lunr.Vector} otherVector - The other vector to calculate the\n * similarity with.\n * @returns {Number}\n */\nlunr.Vector.prototype.similarity = function (otherVector) {\n return this.dot(otherVector) / this.magnitude() || 0\n}\n\n/**\n * Converts the vector to an array of the elements within the vector.\n *\n * @returns {Number[]}\n */\nlunr.Vector.prototype.toArray = function () {\n var output = new Array (this.elements.length / 2)\n\n for (var i = 1, j = 0; i < this.elements.length; i += 2, j++) {\n output[j] = this.elements[i]\n }\n\n return output\n}\n\n/**\n * A JSON serializable representation of the vector.\n *\n * @returns {Number[]}\n */\nlunr.Vector.prototype.toJSON = function () {\n return this.elements\n}\n/* eslint-disable */\n/*!\n * lunr.stemmer\n * Copyright (C) 2020 Oliver Nightingale\n * Includes code from - http://tartarus.org/~martin/PorterStemmer/js.txt\n */\n\n/**\n * lunr.stemmer is an english language stemmer, this is a JavaScript\n * implementation of the PorterStemmer taken from http://tartarus.org/~martin\n *\n * @static\n * @implements {lunr.PipelineFunction}\n * @param {lunr.Token} token - The string to stem\n * @returns {lunr.Token}\n * @see {@link lunr.Pipeline}\n * @function\n */\nlunr.stemmer = (function(){\n var step2list = {\n \"ational\" : \"ate\",\n \"tional\" : \"tion\",\n \"enci\" : \"ence\",\n \"anci\" : \"ance\",\n \"izer\" : \"ize\",\n \"bli\" : \"ble\",\n \"alli\" : \"al\",\n \"entli\" : \"ent\",\n \"eli\" : \"e\",\n \"ousli\" : \"ous\",\n \"ization\" : \"ize\",\n \"ation\" : \"ate\",\n \"ator\" : \"ate\",\n \"alism\" : \"al\",\n \"iveness\" : \"ive\",\n \"fulness\" : \"ful\",\n \"ousness\" : \"ous\",\n \"aliti\" : \"al\",\n \"iviti\" : \"ive\",\n \"biliti\" : \"ble\",\n \"logi\" : \"log\"\n },\n\n step3list = {\n \"icate\" : \"ic\",\n \"ative\" : \"\",\n \"alize\" : \"al\",\n \"iciti\" : \"ic\",\n \"ical\" : \"ic\",\n \"ful\" : \"\",\n \"ness\" : \"\"\n },\n\n c = \"[^aeiou]\", // consonant\n v = \"[aeiouy]\", // vowel\n C = c + \"[^aeiouy]*\", // consonant sequence\n V = v + \"[aeiou]*\", // vowel sequence\n\n mgr0 = \"^(\" + C + \")?\" + V + C, // [C]VC... is m>0\n meq1 = \"^(\" + C + \")?\" + V + C + \"(\" + V + \")?$\", // [C]VC[V] is m=1\n mgr1 = \"^(\" + C + \")?\" + V + C + V + C, // [C]VCVC... is m>1\n s_v = \"^(\" + C + \")?\" + v; // vowel in stem\n\n var re_mgr0 = new RegExp(mgr0);\n var re_mgr1 = new RegExp(mgr1);\n var re_meq1 = new RegExp(meq1);\n var re_s_v = new RegExp(s_v);\n\n var re_1a = /^(.+?)(ss|i)es$/;\n var re2_1a = /^(.+?)([^s])s$/;\n var re_1b = /^(.+?)eed$/;\n var re2_1b = /^(.+?)(ed|ing)$/;\n var re_1b_2 = /.$/;\n var re2_1b_2 = /(at|bl|iz)$/;\n var re3_1b_2 = new RegExp(\"([^aeiouylsz])\\\\1$\");\n var re4_1b_2 = new RegExp(\"^\" + C + v + \"[^aeiouwxy]$\");\n\n var re_1c = /^(.+?[^aeiou])y$/;\n var re_2 = /^(.+?)(ational|tional|enci|anci|izer|bli|alli|entli|eli|ousli|ization|ation|ator|alism|iveness|fulness|ousness|aliti|iviti|biliti|logi)$/;\n\n var re_3 = /^(.+?)(icate|ative|alize|iciti|ical|ful|ness)$/;\n\n var re_4 = /^(.+?)(al|ance|ence|er|ic|able|ible|ant|ement|ment|ent|ou|ism|ate|iti|ous|ive|ize)$/;\n var re2_4 = /^(.+?)(s|t)(ion)$/;\n\n var re_5 = /^(.+?)e$/;\n var re_5_1 = /ll$/;\n var re3_5 = new RegExp(\"^\" + C + v + \"[^aeiouwxy]$\");\n\n var porterStemmer = function porterStemmer(w) {\n var stem,\n suffix,\n firstch,\n re,\n re2,\n re3,\n re4;\n\n if (w.length < 3) { return w; }\n\n firstch = w.substr(0,1);\n if (firstch == \"y\") {\n w = firstch.toUpperCase() + w.substr(1);\n }\n\n // Step 1a\n re = re_1a\n re2 = re2_1a;\n\n if (re.test(w)) { w = w.replace(re,\"$1$2\"); }\n else if (re2.test(w)) { w = w.replace(re2,\"$1$2\"); }\n\n // Step 1b\n re = re_1b;\n re2 = re2_1b;\n if (re.test(w)) {\n var fp = re.exec(w);\n re = re_mgr0;\n if (re.test(fp[1])) {\n re = re_1b_2;\n w = w.replace(re,\"\");\n }\n } else if (re2.test(w)) {\n var fp = re2.exec(w);\n stem = fp[1];\n re2 = re_s_v;\n if (re2.test(stem)) {\n w = stem;\n re2 = re2_1b_2;\n re3 = re3_1b_2;\n re4 = re4_1b_2;\n if (re2.test(w)) { w = w + \"e\"; }\n else if (re3.test(w)) { re = re_1b_2; w = w.replace(re,\"\"); }\n else if (re4.test(w)) { w = w + \"e\"; }\n }\n }\n\n // Step 1c - replace suffix y or Y by i if preceded by a non-vowel which is not the first letter of the word (so cry -> cri, by -> by, say -> say)\n re = re_1c;\n if (re.test(w)) {\n var fp = re.exec(w);\n stem = fp[1];\n w = stem + \"i\";\n }\n\n // Step 2\n re = re_2;\n if (re.test(w)) {\n var fp = re.exec(w);\n stem = fp[1];\n suffix = fp[2];\n re = re_mgr0;\n if (re.test(stem)) {\n w = stem + step2list[suffix];\n }\n }\n\n // Step 3\n re = re_3;\n if (re.test(w)) {\n var fp = re.exec(w);\n stem = fp[1];\n suffix = fp[2];\n re = re_mgr0;\n if (re.test(stem)) {\n w = stem + step3list[suffix];\n }\n }\n\n // Step 4\n re = re_4;\n re2 = re2_4;\n if (re.test(w)) {\n var fp = re.exec(w);\n stem = fp[1];\n re = re_mgr1;\n if (re.test(stem)) {\n w = stem;\n }\n } else if (re2.test(w)) {\n var fp = re2.exec(w);\n stem = fp[1] + fp[2];\n re2 = re_mgr1;\n if (re2.test(stem)) {\n w = stem;\n }\n }\n\n // Step 5\n re = re_5;\n if (re.test(w)) {\n var fp = re.exec(w);\n stem = fp[1];\n re = re_mgr1;\n re2 = re_meq1;\n re3 = re3_5;\n if (re.test(stem) || (re2.test(stem) && !(re3.test(stem)))) {\n w = stem;\n }\n }\n\n re = re_5_1;\n re2 = re_mgr1;\n if (re.test(w) && re2.test(w)) {\n re = re_1b_2;\n w = w.replace(re,\"\");\n }\n\n // and turn initial Y back to y\n\n if (firstch == \"y\") {\n w = firstch.toLowerCase() + w.substr(1);\n }\n\n return w;\n };\n\n return function (token) {\n return token.update(porterStemmer);\n }\n})();\n\nlunr.Pipeline.registerFunction(lunr.stemmer, 'stemmer')\n/*!\n * lunr.stopWordFilter\n * Copyright (C) 2020 Oliver Nightingale\n */\n\n/**\n * lunr.generateStopWordFilter builds a stopWordFilter function from the provided\n * list of stop words.\n *\n * The built in lunr.stopWordFilter is built using this generator and can be used\n * to generate custom stopWordFilters for applications or non English languages.\n *\n * @function\n * @param {Array} token The token to pass through the filter\n * @returns {lunr.PipelineFunction}\n * @see lunr.Pipeline\n * @see lunr.stopWordFilter\n */\nlunr.generateStopWordFilter = function (stopWords) {\n var words = stopWords.reduce(function (memo, stopWord) {\n memo[stopWord] = stopWord\n return memo\n }, {})\n\n return function (token) {\n if (token && words[token.toString()] !== token.toString()) return token\n }\n}\n\n/**\n * lunr.stopWordFilter is an English language stop word list filter, any words\n * contained in the list will not be passed through the filter.\n *\n * This is intended to be used in the Pipeline. If the token does not pass the\n * filter then undefined will be returned.\n *\n * @function\n * @implements {lunr.PipelineFunction}\n * @params {lunr.Token} token - A token to check for being a stop word.\n * @returns {lunr.Token}\n * @see {@link lunr.Pipeline}\n */\nlunr.stopWordFilter = lunr.generateStopWordFilter([\n 'a',\n 'able',\n 'about',\n 'across',\n 'after',\n 'all',\n 'almost',\n 'also',\n 'am',\n 'among',\n 'an',\n 'and',\n 'any',\n 'are',\n 'as',\n 'at',\n 'be',\n 'because',\n 'been',\n 'but',\n 'by',\n 'can',\n 'cannot',\n 'could',\n 'dear',\n 'did',\n 'do',\n 'does',\n 'either',\n 'else',\n 'ever',\n 'every',\n 'for',\n 'from',\n 'get',\n 'got',\n 'had',\n 'has',\n 'have',\n 'he',\n 'her',\n 'hers',\n 'him',\n 'his',\n 'how',\n 'however',\n 'i',\n 'if',\n 'in',\n 'into',\n 'is',\n 'it',\n 'its',\n 'just',\n 'least',\n 'let',\n 'like',\n 'likely',\n 'may',\n 'me',\n 'might',\n 'most',\n 'must',\n 'my',\n 'neither',\n 'no',\n 'nor',\n 'not',\n 'of',\n 'off',\n 'often',\n 'on',\n 'only',\n 'or',\n 'other',\n 'our',\n 'own',\n 'rather',\n 'said',\n 'say',\n 'says',\n 'she',\n 'should',\n 'since',\n 'so',\n 'some',\n 'than',\n 'that',\n 'the',\n 'their',\n 'them',\n 'then',\n 'there',\n 'these',\n 'they',\n 'this',\n 'tis',\n 'to',\n 'too',\n 'twas',\n 'us',\n 'wants',\n 'was',\n 'we',\n 'were',\n 'what',\n 'when',\n 'where',\n 'which',\n 'while',\n 'who',\n 'whom',\n 'why',\n 'will',\n 'with',\n 'would',\n 'yet',\n 'you',\n 'your'\n])\n\nlunr.Pipeline.registerFunction(lunr.stopWordFilter, 'stopWordFilter')\n/*!\n * lunr.trimmer\n * Copyright (C) 2020 Oliver Nightingale\n */\n\n/**\n * lunr.trimmer is a pipeline function for trimming non word\n * characters from the beginning and end of tokens before they\n * enter the index.\n *\n * This implementation may not work correctly for non latin\n * characters and should either be removed or adapted for use\n * with languages with non-latin characters.\n *\n * @static\n * @implements {lunr.PipelineFunction}\n * @param {lunr.Token} token The token to pass through the filter\n * @returns {lunr.Token}\n * @see lunr.Pipeline\n */\nlunr.trimmer = function (token) {\n return token.update(function (s) {\n return s.replace(/^\\W+/, '').replace(/\\W+$/, '')\n })\n}\n\nlunr.Pipeline.registerFunction(lunr.trimmer, 'trimmer')\n/*!\n * lunr.TokenSet\n * Copyright (C) 2020 Oliver Nightingale\n */\n\n/**\n * A token set is used to store the unique list of all tokens\n * within an index. Token sets are also used to represent an\n * incoming query to the index, this query token set and index\n * token set are then intersected to find which tokens to look\n * up in the inverted index.\n *\n * A token set can hold multiple tokens, as in the case of the\n * index token set, or it can hold a single token as in the\n * case of a simple query token set.\n *\n * Additionally token sets are used to perform wildcard matching.\n * Leading, contained and trailing wildcards are supported, and\n * from this edit distance matching can also be provided.\n *\n * Token sets are implemented as a minimal finite state automata,\n * where both common prefixes and suffixes are shared between tokens.\n * This helps to reduce the space used for storing the token set.\n *\n * @constructor\n */\nlunr.TokenSet = function () {\n this.final = false\n this.edges = {}\n this.id = lunr.TokenSet._nextId\n lunr.TokenSet._nextId += 1\n}\n\n/**\n * Keeps track of the next, auto increment, identifier to assign\n * to a new tokenSet.\n *\n * TokenSets require a unique identifier to be correctly minimised.\n *\n * @private\n */\nlunr.TokenSet._nextId = 1\n\n/**\n * Creates a TokenSet instance from the given sorted array of words.\n *\n * @param {String[]} arr - A sorted array of strings to create the set from.\n * @returns {lunr.TokenSet}\n * @throws Will throw an error if the input array is not sorted.\n */\nlunr.TokenSet.fromArray = function (arr) {\n var builder = new lunr.TokenSet.Builder\n\n for (var i = 0, len = arr.length; i < len; i++) {\n builder.insert(arr[i])\n }\n\n builder.finish()\n return builder.root\n}\n\n/**\n * Creates a token set from a query clause.\n *\n * @private\n * @param {Object} clause - A single clause from lunr.Query.\n * @param {string} clause.term - The query clause term.\n * @param {number} [clause.editDistance] - The optional edit distance for the term.\n * @returns {lunr.TokenSet}\n */\nlunr.TokenSet.fromClause = function (clause) {\n if ('editDistance' in clause) {\n return lunr.TokenSet.fromFuzzyString(clause.term, clause.editDistance)\n } else {\n return lunr.TokenSet.fromString(clause.term)\n }\n}\n\n/**\n * Creates a token set representing a single string with a specified\n * edit distance.\n *\n * Insertions, deletions, substitutions and transpositions are each\n * treated as an edit distance of 1.\n *\n * Increasing the allowed edit distance will have a dramatic impact\n * on the performance of both creating and intersecting these TokenSets.\n * It is advised to keep the edit distance less than 3.\n *\n * @param {string} str - The string to create the token set from.\n * @param {number} editDistance - The allowed edit distance to match.\n * @returns {lunr.Vector}\n */\nlunr.TokenSet.fromFuzzyString = function (str, editDistance) {\n var root = new lunr.TokenSet\n\n var stack = [{\n node: root,\n editsRemaining: editDistance,\n str: str\n }]\n\n while (stack.length) {\n var frame = stack.pop()\n\n // no edit\n if (frame.str.length > 0) {\n var char = frame.str.charAt(0),\n noEditNode\n\n if (char in frame.node.edges) {\n noEditNode = frame.node.edges[char]\n } else {\n noEditNode = new lunr.TokenSet\n frame.node.edges[char] = noEditNode\n }\n\n if (frame.str.length == 1) {\n noEditNode.final = true\n }\n\n stack.push({\n node: noEditNode,\n editsRemaining: frame.editsRemaining,\n str: frame.str.slice(1)\n })\n }\n\n if (frame.editsRemaining == 0) {\n continue\n }\n\n // insertion\n if (\"*\" in frame.node.edges) {\n var insertionNode = frame.node.edges[\"*\"]\n } else {\n var insertionNode = new lunr.TokenSet\n frame.node.edges[\"*\"] = insertionNode\n }\n\n if (frame.str.length == 0) {\n insertionNode.final = true\n }\n\n stack.push({\n node: insertionNode,\n editsRemaining: frame.editsRemaining - 1,\n str: frame.str\n })\n\n // deletion\n // can only do a deletion if we have enough edits remaining\n // and if there are characters left to delete in the string\n if (frame.str.length > 1) {\n stack.push({\n node: frame.node,\n editsRemaining: frame.editsRemaining - 1,\n str: frame.str.slice(1)\n })\n }\n\n // deletion\n // just removing the last character from the str\n if (frame.str.length == 1) {\n frame.node.final = true\n }\n\n // substitution\n // can only do a substitution if we have enough edits remaining\n // and if there are characters left to substitute\n if (frame.str.length >= 1) {\n if (\"*\" in frame.node.edges) {\n var substitutionNode = frame.node.edges[\"*\"]\n } else {\n var substitutionNode = new lunr.TokenSet\n frame.node.edges[\"*\"] = substitutionNode\n }\n\n if (frame.str.length == 1) {\n substitutionNode.final = true\n }\n\n stack.push({\n node: substitutionNode,\n editsRemaining: frame.editsRemaining - 1,\n str: frame.str.slice(1)\n })\n }\n\n // transposition\n // can only do a transposition if there are edits remaining\n // and there are enough characters to transpose\n if (frame.str.length > 1) {\n var charA = frame.str.charAt(0),\n charB = frame.str.charAt(1),\n transposeNode\n\n if (charB in frame.node.edges) {\n transposeNode = frame.node.edges[charB]\n } else {\n transposeNode = new lunr.TokenSet\n frame.node.edges[charB] = transposeNode\n }\n\n if (frame.str.length == 1) {\n transposeNode.final = true\n }\n\n stack.push({\n node: transposeNode,\n editsRemaining: frame.editsRemaining - 1,\n str: charA + frame.str.slice(2)\n })\n }\n }\n\n return root\n}\n\n/**\n * Creates a TokenSet from a string.\n *\n * The string may contain one or more wildcard characters (*)\n * that will allow wildcard matching when intersecting with\n * another TokenSet.\n *\n * @param {string} str - The string to create a TokenSet from.\n * @returns {lunr.TokenSet}\n */\nlunr.TokenSet.fromString = function (str) {\n var node = new lunr.TokenSet,\n root = node\n\n /*\n * Iterates through all characters within the passed string\n * appending a node for each character.\n *\n * When a wildcard character is found then a self\n * referencing edge is introduced to continually match\n * any number of any characters.\n */\n for (var i = 0, len = str.length; i < len; i++) {\n var char = str[i],\n final = (i == len - 1)\n\n if (char == \"*\") {\n node.edges[char] = node\n node.final = final\n\n } else {\n var next = new lunr.TokenSet\n next.final = final\n\n node.edges[char] = next\n node = next\n }\n }\n\n return root\n}\n\n/**\n * Converts this TokenSet into an array of strings\n * contained within the TokenSet.\n *\n * This is not intended to be used on a TokenSet that\n * contains wildcards, in these cases the results are\n * undefined and are likely to cause an infinite loop.\n *\n * @returns {string[]}\n */\nlunr.TokenSet.prototype.toArray = function () {\n var words = []\n\n var stack = [{\n prefix: \"\",\n node: this\n }]\n\n while (stack.length) {\n var frame = stack.pop(),\n edges = Object.keys(frame.node.edges),\n len = edges.length\n\n if (frame.node.final) {\n /* In Safari, at this point the prefix is sometimes corrupted, see:\n * https://github.com/olivernn/lunr.js/issues/279 Calling any\n * String.prototype method forces Safari to \"cast\" this string to what\n * it's supposed to be, fixing the bug. */\n frame.prefix.charAt(0)\n words.push(frame.prefix)\n }\n\n for (var i = 0; i < len; i++) {\n var edge = edges[i]\n\n stack.push({\n prefix: frame.prefix.concat(edge),\n node: frame.node.edges[edge]\n })\n }\n }\n\n return words\n}\n\n/**\n * Generates a string representation of a TokenSet.\n *\n * This is intended to allow TokenSets to be used as keys\n * in objects, largely to aid the construction and minimisation\n * of a TokenSet. As such it is not designed to be a human\n * friendly representation of the TokenSet.\n *\n * @returns {string}\n */\nlunr.TokenSet.prototype.toString = function () {\n // NOTE: Using Object.keys here as this.edges is very likely\n // to enter 'hash-mode' with many keys being added\n //\n // avoiding a for-in loop here as it leads to the function\n // being de-optimised (at least in V8). From some simple\n // benchmarks the performance is comparable, but allowing\n // V8 to optimize may mean easy performance wins in the future.\n\n if (this._str) {\n return this._str\n }\n\n var str = this.final ? '1' : '0',\n labels = Object.keys(this.edges).sort(),\n len = labels.length\n\n for (var i = 0; i < len; i++) {\n var label = labels[i],\n node = this.edges[label]\n\n str = str + label + node.id\n }\n\n return str\n}\n\n/**\n * Returns a new TokenSet that is the intersection of\n * this TokenSet and the passed TokenSet.\n *\n * This intersection will take into account any wildcards\n * contained within the TokenSet.\n *\n * @param {lunr.TokenSet} b - An other TokenSet to intersect with.\n * @returns {lunr.TokenSet}\n */\nlunr.TokenSet.prototype.intersect = function (b) {\n var output = new lunr.TokenSet,\n frame = undefined\n\n var stack = [{\n qNode: b,\n output: output,\n node: this\n }]\n\n while (stack.length) {\n frame = stack.pop()\n\n // NOTE: As with the #toString method, we are using\n // Object.keys and a for loop instead of a for-in loop\n // as both of these objects enter 'hash' mode, causing\n // the function to be de-optimised in V8\n var qEdges = Object.keys(frame.qNode.edges),\n qLen = qEdges.length,\n nEdges = Object.keys(frame.node.edges),\n nLen = nEdges.length\n\n for (var q = 0; q < qLen; q++) {\n var qEdge = qEdges[q]\n\n for (var n = 0; n < nLen; n++) {\n var nEdge = nEdges[n]\n\n if (nEdge == qEdge || qEdge == '*') {\n var node = frame.node.edges[nEdge],\n qNode = frame.qNode.edges[qEdge],\n final = node.final && qNode.final,\n next = undefined\n\n if (nEdge in frame.output.edges) {\n // an edge already exists for this character\n // no need to create a new node, just set the finality\n // bit unless this node is already final\n next = frame.output.edges[nEdge]\n next.final = next.final || final\n\n } else {\n // no edge exists yet, must create one\n // set the finality bit and insert it\n // into the output\n next = new lunr.TokenSet\n next.final = final\n frame.output.edges[nEdge] = next\n }\n\n stack.push({\n qNode: qNode,\n output: next,\n node: node\n })\n }\n }\n }\n }\n\n return output\n}\nlunr.TokenSet.Builder = function () {\n this.previousWord = \"\"\n this.root = new lunr.TokenSet\n this.uncheckedNodes = []\n this.minimizedNodes = {}\n}\n\nlunr.TokenSet.Builder.prototype.insert = function (word) {\n var node,\n commonPrefix = 0\n\n if (word < this.previousWord) {\n throw new Error (\"Out of order word insertion\")\n }\n\n for (var i = 0; i < word.length && i < this.previousWord.length; i++) {\n if (word[i] != this.previousWord[i]) break\n commonPrefix++\n }\n\n this.minimize(commonPrefix)\n\n if (this.uncheckedNodes.length == 0) {\n node = this.root\n } else {\n node = this.uncheckedNodes[this.uncheckedNodes.length - 1].child\n }\n\n for (var i = commonPrefix; i < word.length; i++) {\n var nextNode = new lunr.TokenSet,\n char = word[i]\n\n node.edges[char] = nextNode\n\n this.uncheckedNodes.push({\n parent: node,\n char: char,\n child: nextNode\n })\n\n node = nextNode\n }\n\n node.final = true\n this.previousWord = word\n}\n\nlunr.TokenSet.Builder.prototype.finish = function () {\n this.minimize(0)\n}\n\nlunr.TokenSet.Builder.prototype.minimize = function (downTo) {\n for (var i = this.uncheckedNodes.length - 1; i >= downTo; i--) {\n var node = this.uncheckedNodes[i],\n childKey = node.child.toString()\n\n if (childKey in this.minimizedNodes) {\n node.parent.edges[node.char] = this.minimizedNodes[childKey]\n } else {\n // Cache the key for this node since\n // we know it can't change anymore\n node.child._str = childKey\n\n this.minimizedNodes[childKey] = node.child\n }\n\n this.uncheckedNodes.pop()\n }\n}\n/*!\n * lunr.Index\n * Copyright (C) 2020 Oliver Nightingale\n */\n\n/**\n * An index contains the built index of all documents and provides a query interface\n * to the index.\n *\n * Usually instances of lunr.Index will not be created using this constructor, instead\n * lunr.Builder should be used to construct new indexes, or lunr.Index.load should be\n * used to load previously built and serialized indexes.\n *\n * @constructor\n * @param {Object} attrs - The attributes of the built search index.\n * @param {Object} attrs.invertedIndex - An index of term/field to document reference.\n * @param {Object} attrs.fieldVectors - Field vectors\n * @param {lunr.TokenSet} attrs.tokenSet - An set of all corpus tokens.\n * @param {string[]} attrs.fields - The names of indexed document fields.\n * @param {lunr.Pipeline} attrs.pipeline - The pipeline to use for search terms.\n */\nlunr.Index = function (attrs) {\n this.invertedIndex = attrs.invertedIndex\n this.fieldVectors = attrs.fieldVectors\n this.tokenSet = attrs.tokenSet\n this.fields = attrs.fields\n this.pipeline = attrs.pipeline\n}\n\n/**\n * A result contains details of a document matching a search query.\n * @typedef {Object} lunr.Index~Result\n * @property {string} ref - The reference of the document this result represents.\n * @property {number} score - A number between 0 and 1 representing how similar this document is to the query.\n * @property {lunr.MatchData} matchData - Contains metadata about this match including which term(s) caused the match.\n */\n\n/**\n * Although lunr provides the ability to create queries using lunr.Query, it also provides a simple\n * query language which itself is parsed into an instance of lunr.Query.\n *\n * For programmatically building queries it is advised to directly use lunr.Query, the query language\n * is best used for human entered text rather than program generated text.\n *\n * At its simplest queries can just be a single term, e.g. `hello`, multiple terms are also supported\n * and will be combined with OR, e.g `hello world` will match documents that contain either 'hello'\n * or 'world', though those that contain both will rank higher in the results.\n *\n * Wildcards can be included in terms to match one or more unspecified characters, these wildcards can\n * be inserted anywhere within the term, and more than one wildcard can exist in a single term. Adding\n * wildcards will increase the number of documents that will be found but can also have a negative\n * impact on query performance, especially with wildcards at the beginning of a term.\n *\n * Terms can be restricted to specific fields, e.g. `title:hello`, only documents with the term\n * hello in the title field will match this query. Using a field not present in the index will lead\n * to an error being thrown.\n *\n * Modifiers can also be added to terms, lunr supports edit distance and boost modifiers on terms. A term\n * boost will make documents matching that term score higher, e.g. `foo^5`. Edit distance is also supported\n * to provide fuzzy matching, e.g. 'hello~2' will match documents with hello with an edit distance of 2.\n * Avoid large values for edit distance to improve query performance.\n *\n * Each term also supports a presence modifier. By default a term's presence in document is optional, however\n * this can be changed to either required or prohibited. For a term's presence to be required in a document the\n * term should be prefixed with a '+', e.g. `+foo bar` is a search for documents that must contain 'foo' and\n * optionally contain 'bar'. Conversely a leading '-' sets the terms presence to prohibited, i.e. it must not\n * appear in a document, e.g. `-foo bar` is a search for documents that do not contain 'foo' but may contain 'bar'.\n *\n * To escape special characters the backslash character '\\' can be used, this allows searches to include\n * characters that would normally be considered modifiers, e.g. `foo\\~2` will search for a term \"foo~2\" instead\n * of attempting to apply a boost of 2 to the search term \"foo\".\n *\n * @typedef {string} lunr.Index~QueryString\n * @example Simple single term query\n * hello\n * @example Multiple term query\n * hello world\n * @example term scoped to a field\n * title:hello\n * @example term with a boost of 10\n * hello^10\n * @example term with an edit distance of 2\n * hello~2\n * @example terms with presence modifiers\n * -foo +bar baz\n */\n\n/**\n * Performs a search against the index using lunr query syntax.\n *\n * Results will be returned sorted by their score, the most relevant results\n * will be returned first. For details on how the score is calculated, please see\n * the {@link https://lunrjs.com/guides/searching.html#scoring|guide}.\n *\n * For more programmatic querying use lunr.Index#query.\n *\n * @param {lunr.Index~QueryString} queryString - A string containing a lunr query.\n * @throws {lunr.QueryParseError} If the passed query string cannot be parsed.\n * @returns {lunr.Index~Result[]}\n */\nlunr.Index.prototype.search = function (queryString) {\n return this.query(function (query) {\n var parser = new lunr.QueryParser(queryString, query)\n parser.parse()\n })\n}\n\n/**\n * A query builder callback provides a query object to be used to express\n * the query to perform on the index.\n *\n * @callback lunr.Index~queryBuilder\n * @param {lunr.Query} query - The query object to build up.\n * @this lunr.Query\n */\n\n/**\n * Performs a query against the index using the yielded lunr.Query object.\n *\n * If performing programmatic queries against the index, this method is preferred\n * over lunr.Index#search so as to avoid the additional query parsing overhead.\n *\n * A query object is yielded to the supplied function which should be used to\n * express the query to be run against the index.\n *\n * Note that although this function takes a callback parameter it is _not_ an\n * asynchronous operation, the callback is just yielded a query object to be\n * customized.\n *\n * @param {lunr.Index~queryBuilder} fn - A function that is used to build the query.\n * @returns {lunr.Index~Result[]}\n */\nlunr.Index.prototype.query = function (fn) {\n // for each query clause\n // * process terms\n // * expand terms from token set\n // * find matching documents and metadata\n // * get document vectors\n // * score documents\n\n var query = new lunr.Query(this.fields),\n matchingFields = Object.create(null),\n queryVectors = Object.create(null),\n termFieldCache = Object.create(null),\n requiredMatches = Object.create(null),\n prohibitedMatches = Object.create(null)\n\n /*\n * To support field level boosts a query vector is created per\n * field. An empty vector is eagerly created to support negated\n * queries.\n */\n for (var i = 0; i < this.fields.length; i++) {\n queryVectors[this.fields[i]] = new lunr.Vector\n }\n\n fn.call(query, query)\n\n for (var i = 0; i < query.clauses.length; i++) {\n /*\n * Unless the pipeline has been disabled for this term, which is\n * the case for terms with wildcards, we need to pass the clause\n * term through the search pipeline. A pipeline returns an array\n * of processed terms. Pipeline functions may expand the passed\n * term, which means we may end up performing multiple index lookups\n * for a single query term.\n */\n var clause = query.clauses[i],\n terms = null,\n clauseMatches = lunr.Set.empty\n\n if (clause.usePipeline) {\n terms = this.pipeline.runString(clause.term, {\n fields: clause.fields\n })\n } else {\n terms = [clause.term]\n }\n\n for (var m = 0; m < terms.length; m++) {\n var term = terms[m]\n\n /*\n * Each term returned from the pipeline needs to use the same query\n * clause object, e.g. the same boost and or edit distance. The\n * simplest way to do this is to re-use the clause object but mutate\n * its term property.\n */\n clause.term = term\n\n /*\n * From the term in the clause we create a token set which will then\n * be used to intersect the indexes token set to get a list of terms\n * to lookup in the inverted index\n */\n var termTokenSet = lunr.TokenSet.fromClause(clause),\n expandedTerms = this.tokenSet.intersect(termTokenSet).toArray()\n\n /*\n * If a term marked as required does not exist in the tokenSet it is\n * impossible for the search to return any matches. We set all the field\n * scoped required matches set to empty and stop examining any further\n * clauses.\n */\n if (expandedTerms.length === 0 && clause.presence === lunr.Query.presence.REQUIRED) {\n for (var k = 0; k < clause.fields.length; k++) {\n var field = clause.fields[k]\n requiredMatches[field] = lunr.Set.empty\n }\n\n break\n }\n\n for (var j = 0; j < expandedTerms.length; j++) {\n /*\n * For each term get the posting and termIndex, this is required for\n * building the query vector.\n */\n var expandedTerm = expandedTerms[j],\n posting = this.invertedIndex[expandedTerm],\n termIndex = posting._index\n\n for (var k = 0; k < clause.fields.length; k++) {\n /*\n * For each field that this query term is scoped by (by default\n * all fields are in scope) we need to get all the document refs\n * that have this term in that field.\n *\n * The posting is the entry in the invertedIndex for the matching\n * term from above.\n */\n var field = clause.fields[k],\n fieldPosting = posting[field],\n matchingDocumentRefs = Object.keys(fieldPosting),\n termField = expandedTerm + \"/\" + field,\n matchingDocumentsSet = new lunr.Set(matchingDocumentRefs)\n\n /*\n * if the presence of this term is required ensure that the matching\n * documents are added to the set of required matches for this clause.\n *\n */\n if (clause.presence == lunr.Query.presence.REQUIRED) {\n clauseMatches = clauseMatches.union(matchingDocumentsSet)\n\n if (requiredMatches[field] === undefined) {\n requiredMatches[field] = lunr.Set.complete\n }\n }\n\n /*\n * if the presence of this term is prohibited ensure that the matching\n * documents are added to the set of prohibited matches for this field,\n * creating that set if it does not yet exist.\n */\n if (clause.presence == lunr.Query.presence.PROHIBITED) {\n if (prohibitedMatches[field] === undefined) {\n prohibitedMatches[field] = lunr.Set.empty\n }\n\n prohibitedMatches[field] = prohibitedMatches[field].union(matchingDocumentsSet)\n\n /*\n * Prohibited matches should not be part of the query vector used for\n * similarity scoring and no metadata should be extracted so we continue\n * to the next field\n */\n continue\n }\n\n /*\n * The query field vector is populated using the termIndex found for\n * the term and a unit value with the appropriate boost applied.\n * Using upsert because there could already be an entry in the vector\n * for the term we are working with. In that case we just add the scores\n * together.\n */\n queryVectors[field].upsert(termIndex, clause.boost, function (a, b) { return a + b })\n\n /**\n * If we've already seen this term, field combo then we've already collected\n * the matching documents and metadata, no need to go through all that again\n */\n if (termFieldCache[termField]) {\n continue\n }\n\n for (var l = 0; l < matchingDocumentRefs.length; l++) {\n /*\n * All metadata for this term/field/document triple\n * are then extracted and collected into an instance\n * of lunr.MatchData ready to be returned in the query\n * results\n */\n var matchingDocumentRef = matchingDocumentRefs[l],\n matchingFieldRef = new lunr.FieldRef (matchingDocumentRef, field),\n metadata = fieldPosting[matchingDocumentRef],\n fieldMatch\n\n if ((fieldMatch = matchingFields[matchingFieldRef]) === undefined) {\n matchingFields[matchingFieldRef] = new lunr.MatchData (expandedTerm, field, metadata)\n } else {\n fieldMatch.add(expandedTerm, field, metadata)\n }\n\n }\n\n termFieldCache[termField] = true\n }\n }\n }\n\n /**\n * If the presence was required we need to update the requiredMatches field sets.\n * We do this after all fields for the term have collected their matches because\n * the clause terms presence is required in _any_ of the fields not _all_ of the\n * fields.\n */\n if (clause.presence === lunr.Query.presence.REQUIRED) {\n for (var k = 0; k < clause.fields.length; k++) {\n var field = clause.fields[k]\n requiredMatches[field] = requiredMatches[field].intersect(clauseMatches)\n }\n }\n }\n\n /**\n * Need to combine the field scoped required and prohibited\n * matching documents into a global set of required and prohibited\n * matches\n */\n var allRequiredMatches = lunr.Set.complete,\n allProhibitedMatches = lunr.Set.empty\n\n for (var i = 0; i < this.fields.length; i++) {\n var field = this.fields[i]\n\n if (requiredMatches[field]) {\n allRequiredMatches = allRequiredMatches.intersect(requiredMatches[field])\n }\n\n if (prohibitedMatches[field]) {\n allProhibitedMatches = allProhibitedMatches.union(prohibitedMatches[field])\n }\n }\n\n var matchingFieldRefs = Object.keys(matchingFields),\n results = [],\n matches = Object.create(null)\n\n /*\n * If the query is negated (contains only prohibited terms)\n * we need to get _all_ fieldRefs currently existing in the\n * index. This is only done when we know that the query is\n * entirely prohibited terms to avoid any cost of getting all\n * fieldRefs unnecessarily.\n *\n * Additionally, blank MatchData must be created to correctly\n * populate the results.\n */\n if (query.isNegated()) {\n matchingFieldRefs = Object.keys(this.fieldVectors)\n\n for (var i = 0; i < matchingFieldRefs.length; i++) {\n var matchingFieldRef = matchingFieldRefs[i]\n var fieldRef = lunr.FieldRef.fromString(matchingFieldRef)\n matchingFields[matchingFieldRef] = new lunr.MatchData\n }\n }\n\n for (var i = 0; i < matchingFieldRefs.length; i++) {\n /*\n * Currently we have document fields that match the query, but we\n * need to return documents. The matchData and scores are combined\n * from multiple fields belonging to the same document.\n *\n * Scores are calculated by field, using the query vectors created\n * above, and combined into a final document score using addition.\n */\n var fieldRef = lunr.FieldRef.fromString(matchingFieldRefs[i]),\n docRef = fieldRef.docRef\n\n if (!allRequiredMatches.contains(docRef)) {\n continue\n }\n\n if (allProhibitedMatches.contains(docRef)) {\n continue\n }\n\n var fieldVector = this.fieldVectors[fieldRef],\n score = queryVectors[fieldRef.fieldName].similarity(fieldVector),\n docMatch\n\n if ((docMatch = matches[docRef]) !== undefined) {\n docMatch.score += score\n docMatch.matchData.combine(matchingFields[fieldRef])\n } else {\n var match = {\n ref: docRef,\n score: score,\n matchData: matchingFields[fieldRef]\n }\n matches[docRef] = match\n results.push(match)\n }\n }\n\n /*\n * Sort the results objects by score, highest first.\n */\n return results.sort(function (a, b) {\n return b.score - a.score\n })\n}\n\n/**\n * Prepares the index for JSON serialization.\n *\n * The schema for this JSON blob will be described in a\n * separate JSON schema file.\n *\n * @returns {Object}\n */\nlunr.Index.prototype.toJSON = function () {\n var invertedIndex = Object.keys(this.invertedIndex)\n .sort()\n .map(function (term) {\n return [term, this.invertedIndex[term]]\n }, this)\n\n var fieldVectors = Object.keys(this.fieldVectors)\n .map(function (ref) {\n return [ref, this.fieldVectors[ref].toJSON()]\n }, this)\n\n return {\n version: lunr.version,\n fields: this.fields,\n fieldVectors: fieldVectors,\n invertedIndex: invertedIndex,\n pipeline: this.pipeline.toJSON()\n }\n}\n\n/**\n * Loads a previously serialized lunr.Index\n *\n * @param {Object} serializedIndex - A previously serialized lunr.Index\n * @returns {lunr.Index}\n */\nlunr.Index.load = function (serializedIndex) {\n var attrs = {},\n fieldVectors = {},\n serializedVectors = serializedIndex.fieldVectors,\n invertedIndex = Object.create(null),\n serializedInvertedIndex = serializedIndex.invertedIndex,\n tokenSetBuilder = new lunr.TokenSet.Builder,\n pipeline = lunr.Pipeline.load(serializedIndex.pipeline)\n\n if (serializedIndex.version != lunr.version) {\n lunr.utils.warn(\"Version mismatch when loading serialised index. Current version of lunr '\" + lunr.version + \"' does not match serialized index '\" + serializedIndex.version + \"'\")\n }\n\n for (var i = 0; i < serializedVectors.length; i++) {\n var tuple = serializedVectors[i],\n ref = tuple[0],\n elements = tuple[1]\n\n fieldVectors[ref] = new lunr.Vector(elements)\n }\n\n for (var i = 0; i < serializedInvertedIndex.length; i++) {\n var tuple = serializedInvertedIndex[i],\n term = tuple[0],\n posting = tuple[1]\n\n tokenSetBuilder.insert(term)\n invertedIndex[term] = posting\n }\n\n tokenSetBuilder.finish()\n\n attrs.fields = serializedIndex.fields\n\n attrs.fieldVectors = fieldVectors\n attrs.invertedIndex = invertedIndex\n attrs.tokenSet = tokenSetBuilder.root\n attrs.pipeline = pipeline\n\n return new lunr.Index(attrs)\n}\n/*!\n * lunr.Builder\n * Copyright (C) 2020 Oliver Nightingale\n */\n\n/**\n * lunr.Builder performs indexing on a set of documents and\n * returns instances of lunr.Index ready for querying.\n *\n * All configuration of the index is done via the builder, the\n * fields to index, the document reference, the text processing\n * pipeline and document scoring parameters are all set on the\n * builder before indexing.\n *\n * @constructor\n * @property {string} _ref - Internal reference to the document reference field.\n * @property {string[]} _fields - Internal reference to the document fields to index.\n * @property {object} invertedIndex - The inverted index maps terms to document fields.\n * @property {object} documentTermFrequencies - Keeps track of document term frequencies.\n * @property {object} documentLengths - Keeps track of the length of documents added to the index.\n * @property {lunr.tokenizer} tokenizer - Function for splitting strings into tokens for indexing.\n * @property {lunr.Pipeline} pipeline - The pipeline performs text processing on tokens before indexing.\n * @property {lunr.Pipeline} searchPipeline - A pipeline for processing search terms before querying the index.\n * @property {number} documentCount - Keeps track of the total number of documents indexed.\n * @property {number} _b - A parameter to control field length normalization, setting this to 0 disabled normalization, 1 fully normalizes field lengths, the default value is 0.75.\n * @property {number} _k1 - A parameter to control how quickly an increase in term frequency results in term frequency saturation, the default value is 1.2.\n * @property {number} termIndex - A counter incremented for each unique term, used to identify a terms position in the vector space.\n * @property {array} metadataWhitelist - A list of metadata keys that have been whitelisted for entry in the index.\n */\nlunr.Builder = function () {\n this._ref = \"id\"\n this._fields = Object.create(null)\n this._documents = Object.create(null)\n this.invertedIndex = Object.create(null)\n this.fieldTermFrequencies = {}\n this.fieldLengths = {}\n this.tokenizer = lunr.tokenizer\n this.pipeline = new lunr.Pipeline\n this.searchPipeline = new lunr.Pipeline\n this.documentCount = 0\n this._b = 0.75\n this._k1 = 1.2\n this.termIndex = 0\n this.metadataWhitelist = []\n}\n\n/**\n * Sets the document field used as the document reference. Every document must have this field.\n * The type of this field in the document should be a string, if it is not a string it will be\n * coerced into a string by calling toString.\n *\n * The default ref is 'id'.\n *\n * The ref should _not_ be changed during indexing, it should be set before any documents are\n * added to the index. Changing it during indexing can lead to inconsistent results.\n *\n * @param {string} ref - The name of the reference field in the document.\n */\nlunr.Builder.prototype.ref = function (ref) {\n this._ref = ref\n}\n\n/**\n * A function that is used to extract a field from a document.\n *\n * Lunr expects a field to be at the top level of a document, if however the field\n * is deeply nested within a document an extractor function can be used to extract\n * the right field for indexing.\n *\n * @callback fieldExtractor\n * @param {object} doc - The document being added to the index.\n * @returns {?(string|object|object[])} obj - The object that will be indexed for this field.\n * @example Extracting a nested field\n * function (doc) { return doc.nested.field }\n */\n\n/**\n * Adds a field to the list of document fields that will be indexed. Every document being\n * indexed should have this field. Null values for this field in indexed documents will\n * not cause errors but will limit the chance of that document being retrieved by searches.\n *\n * All fields should be added before adding documents to the index. Adding fields after\n * a document has been indexed will have no effect on already indexed documents.\n *\n * Fields can be boosted at build time. This allows terms within that field to have more\n * importance when ranking search results. Use a field boost to specify that matches within\n * one field are more important than other fields.\n *\n * @param {string} fieldName - The name of a field to index in all documents.\n * @param {object} attributes - Optional attributes associated with this field.\n * @param {number} [attributes.boost=1] - Boost applied to all terms within this field.\n * @param {fieldExtractor} [attributes.extractor] - Function to extract a field from a document.\n * @throws {RangeError} fieldName cannot contain unsupported characters '/'\n */\nlunr.Builder.prototype.field = function (fieldName, attributes) {\n if (/\\//.test(fieldName)) {\n throw new RangeError (\"Field '\" + fieldName + \"' contains illegal character '/'\")\n }\n\n this._fields[fieldName] = attributes || {}\n}\n\n/**\n * A parameter to tune the amount of field length normalisation that is applied when\n * calculating relevance scores. A value of 0 will completely disable any normalisation\n * and a value of 1 will fully normalise field lengths. The default is 0.75. Values of b\n * will be clamped to the range 0 - 1.\n *\n * @param {number} number - The value to set for this tuning parameter.\n */\nlunr.Builder.prototype.b = function (number) {\n if (number < 0) {\n this._b = 0\n } else if (number > 1) {\n this._b = 1\n } else {\n this._b = number\n }\n}\n\n/**\n * A parameter that controls the speed at which a rise in term frequency results in term\n * frequency saturation. The default value is 1.2. Setting this to a higher value will give\n * slower saturation levels, a lower value will result in quicker saturation.\n *\n * @param {number} number - The value to set for this tuning parameter.\n */\nlunr.Builder.prototype.k1 = function (number) {\n this._k1 = number\n}\n\n/**\n * Adds a document to the index.\n *\n * Before adding fields to the index the index should have been fully setup, with the document\n * ref and all fields to index already having been specified.\n *\n * The document must have a field name as specified by the ref (by default this is 'id') and\n * it should have all fields defined for indexing, though null or undefined values will not\n * cause errors.\n *\n * Entire documents can be boosted at build time. Applying a boost to a document indicates that\n * this document should rank higher in search results than other documents.\n *\n * @param {object} doc - The document to add to the index.\n * @param {object} attributes - Optional attributes associated with this document.\n * @param {number} [attributes.boost=1] - Boost applied to all terms within this document.\n */\nlunr.Builder.prototype.add = function (doc, attributes) {\n var docRef = doc[this._ref],\n fields = Object.keys(this._fields)\n\n this._documents[docRef] = attributes || {}\n this.documentCount += 1\n\n for (var i = 0; i < fields.length; i++) {\n var fieldName = fields[i],\n extractor = this._fields[fieldName].extractor,\n field = extractor ? extractor(doc) : doc[fieldName],\n tokens = this.tokenizer(field, {\n fields: [fieldName]\n }),\n terms = this.pipeline.run(tokens),\n fieldRef = new lunr.FieldRef (docRef, fieldName),\n fieldTerms = Object.create(null)\n\n this.fieldTermFrequencies[fieldRef] = fieldTerms\n this.fieldLengths[fieldRef] = 0\n\n // store the length of this field for this document\n this.fieldLengths[fieldRef] += terms.length\n\n // calculate term frequencies for this field\n for (var j = 0; j < terms.length; j++) {\n var term = terms[j]\n\n if (fieldTerms[term] == undefined) {\n fieldTerms[term] = 0\n }\n\n fieldTerms[term] += 1\n\n // add to inverted index\n // create an initial posting if one doesn't exist\n if (this.invertedIndex[term] == undefined) {\n var posting = Object.create(null)\n posting[\"_index\"] = this.termIndex\n this.termIndex += 1\n\n for (var k = 0; k < fields.length; k++) {\n posting[fields[k]] = Object.create(null)\n }\n\n this.invertedIndex[term] = posting\n }\n\n // add an entry for this term/fieldName/docRef to the invertedIndex\n if (this.invertedIndex[term][fieldName][docRef] == undefined) {\n this.invertedIndex[term][fieldName][docRef] = Object.create(null)\n }\n\n // store all whitelisted metadata about this token in the\n // inverted index\n for (var l = 0; l < this.metadataWhitelist.length; l++) {\n var metadataKey = this.metadataWhitelist[l],\n metadata = term.metadata[metadataKey]\n\n if (this.invertedIndex[term][fieldName][docRef][metadataKey] == undefined) {\n this.invertedIndex[term][fieldName][docRef][metadataKey] = []\n }\n\n this.invertedIndex[term][fieldName][docRef][metadataKey].push(metadata)\n }\n }\n\n }\n}\n\n/**\n * Calculates the average document length for this index\n *\n * @private\n */\nlunr.Builder.prototype.calculateAverageFieldLengths = function () {\n\n var fieldRefs = Object.keys(this.fieldLengths),\n numberOfFields = fieldRefs.length,\n accumulator = {},\n documentsWithField = {}\n\n for (var i = 0; i < numberOfFields; i++) {\n var fieldRef = lunr.FieldRef.fromString(fieldRefs[i]),\n field = fieldRef.fieldName\n\n documentsWithField[field] || (documentsWithField[field] = 0)\n documentsWithField[field] += 1\n\n accumulator[field] || (accumulator[field] = 0)\n accumulator[field] += this.fieldLengths[fieldRef]\n }\n\n var fields = Object.keys(this._fields)\n\n for (var i = 0; i < fields.length; i++) {\n var fieldName = fields[i]\n accumulator[fieldName] = accumulator[fieldName] / documentsWithField[fieldName]\n }\n\n this.averageFieldLength = accumulator\n}\n\n/**\n * Builds a vector space model of every document using lunr.Vector\n *\n * @private\n */\nlunr.Builder.prototype.createFieldVectors = function () {\n var fieldVectors = {},\n fieldRefs = Object.keys(this.fieldTermFrequencies),\n fieldRefsLength = fieldRefs.length,\n termIdfCache = Object.create(null)\n\n for (var i = 0; i < fieldRefsLength; i++) {\n var fieldRef = lunr.FieldRef.fromString(fieldRefs[i]),\n fieldName = fieldRef.fieldName,\n fieldLength = this.fieldLengths[fieldRef],\n fieldVector = new lunr.Vector,\n termFrequencies = this.fieldTermFrequencies[fieldRef],\n terms = Object.keys(termFrequencies),\n termsLength = terms.length\n\n\n var fieldBoost = this._fields[fieldName].boost || 1,\n docBoost = this._documents[fieldRef.docRef].boost || 1\n\n for (var j = 0; j < termsLength; j++) {\n var term = terms[j],\n tf = termFrequencies[term],\n termIndex = this.invertedIndex[term]._index,\n idf, score, scoreWithPrecision\n\n if (termIdfCache[term] === undefined) {\n idf = lunr.idf(this.invertedIndex[term], this.documentCount)\n termIdfCache[term] = idf\n } else {\n idf = termIdfCache[term]\n }\n\n score = idf * ((this._k1 + 1) * tf) / (this._k1 * (1 - this._b + this._b * (fieldLength / this.averageFieldLength[fieldName])) + tf)\n score *= fieldBoost\n score *= docBoost\n scoreWithPrecision = Math.round(score * 1000) / 1000\n // Converts 1.23456789 to 1.234.\n // Reducing the precision so that the vectors take up less\n // space when serialised. Doing it now so that they behave\n // the same before and after serialisation. Also, this is\n // the fastest approach to reducing a number's precision in\n // JavaScript.\n\n fieldVector.insert(termIndex, scoreWithPrecision)\n }\n\n fieldVectors[fieldRef] = fieldVector\n }\n\n this.fieldVectors = fieldVectors\n}\n\n/**\n * Creates a token set of all tokens in the index using lunr.TokenSet\n *\n * @private\n */\nlunr.Builder.prototype.createTokenSet = function () {\n this.tokenSet = lunr.TokenSet.fromArray(\n Object.keys(this.invertedIndex).sort()\n )\n}\n\n/**\n * Builds the index, creating an instance of lunr.Index.\n *\n * This completes the indexing process and should only be called\n * once all documents have been added to the index.\n *\n * @returns {lunr.Index}\n */\nlunr.Builder.prototype.build = function () {\n this.calculateAverageFieldLengths()\n this.createFieldVectors()\n this.createTokenSet()\n\n return new lunr.Index({\n invertedIndex: this.invertedIndex,\n fieldVectors: this.fieldVectors,\n tokenSet: this.tokenSet,\n fields: Object.keys(this._fields),\n pipeline: this.searchPipeline\n })\n}\n\n/**\n * Applies a plugin to the index builder.\n *\n * A plugin is a function that is called with the index builder as its context.\n * Plugins can be used to customise or extend the behaviour of the index\n * in some way. A plugin is just a function, that encapsulated the custom\n * behaviour that should be applied when building the index.\n *\n * The plugin function will be called with the index builder as its argument, additional\n * arguments can also be passed when calling use. The function will be called\n * with the index builder as its context.\n *\n * @param {Function} plugin The plugin to apply.\n */\nlunr.Builder.prototype.use = function (fn) {\n var args = Array.prototype.slice.call(arguments, 1)\n args.unshift(this)\n fn.apply(this, args)\n}\n/**\n * Contains and collects metadata about a matching document.\n * A single instance of lunr.MatchData is returned as part of every\n * lunr.Index~Result.\n *\n * @constructor\n * @param {string} term - The term this match data is associated with\n * @param {string} field - The field in which the term was found\n * @param {object} metadata - The metadata recorded about this term in this field\n * @property {object} metadata - A cloned collection of metadata associated with this document.\n * @see {@link lunr.Index~Result}\n */\nlunr.MatchData = function (term, field, metadata) {\n var clonedMetadata = Object.create(null),\n metadataKeys = Object.keys(metadata || {})\n\n // Cloning the metadata to prevent the original\n // being mutated during match data combination.\n // Metadata is kept in an array within the inverted\n // index so cloning the data can be done with\n // Array#slice\n for (var i = 0; i < metadataKeys.length; i++) {\n var key = metadataKeys[i]\n clonedMetadata[key] = metadata[key].slice()\n }\n\n this.metadata = Object.create(null)\n\n if (term !== undefined) {\n this.metadata[term] = Object.create(null)\n this.metadata[term][field] = clonedMetadata\n }\n}\n\n/**\n * An instance of lunr.MatchData will be created for every term that matches a\n * document. However only one instance is required in a lunr.Index~Result. This\n * method combines metadata from another instance of lunr.MatchData with this\n * objects metadata.\n *\n * @param {lunr.MatchData} otherMatchData - Another instance of match data to merge with this one.\n * @see {@link lunr.Index~Result}\n */\nlunr.MatchData.prototype.combine = function (otherMatchData) {\n var terms = Object.keys(otherMatchData.metadata)\n\n for (var i = 0; i < terms.length; i++) {\n var term = terms[i],\n fields = Object.keys(otherMatchData.metadata[term])\n\n if (this.metadata[term] == undefined) {\n this.metadata[term] = Object.create(null)\n }\n\n for (var j = 0; j < fields.length; j++) {\n var field = fields[j],\n keys = Object.keys(otherMatchData.metadata[term][field])\n\n if (this.metadata[term][field] == undefined) {\n this.metadata[term][field] = Object.create(null)\n }\n\n for (var k = 0; k < keys.length; k++) {\n var key = keys[k]\n\n if (this.metadata[term][field][key] == undefined) {\n this.metadata[term][field][key] = otherMatchData.metadata[term][field][key]\n } else {\n this.metadata[term][field][key] = this.metadata[term][field][key].concat(otherMatchData.metadata[term][field][key])\n }\n\n }\n }\n }\n}\n\n/**\n * Add metadata for a term/field pair to this instance of match data.\n *\n * @param {string} term - The term this match data is associated with\n * @param {string} field - The field in which the term was found\n * @param {object} metadata - The metadata recorded about this term in this field\n */\nlunr.MatchData.prototype.add = function (term, field, metadata) {\n if (!(term in this.metadata)) {\n this.metadata[term] = Object.create(null)\n this.metadata[term][field] = metadata\n return\n }\n\n if (!(field in this.metadata[term])) {\n this.metadata[term][field] = metadata\n return\n }\n\n var metadataKeys = Object.keys(metadata)\n\n for (var i = 0; i < metadataKeys.length; i++) {\n var key = metadataKeys[i]\n\n if (key in this.metadata[term][field]) {\n this.metadata[term][field][key] = this.metadata[term][field][key].concat(metadata[key])\n } else {\n this.metadata[term][field][key] = metadata[key]\n }\n }\n}\n/**\n * A lunr.Query provides a programmatic way of defining queries to be performed\n * against a {@link lunr.Index}.\n *\n * Prefer constructing a lunr.Query using the {@link lunr.Index#query} method\n * so the query object is pre-initialized with the right index fields.\n *\n * @constructor\n * @property {lunr.Query~Clause[]} clauses - An array of query clauses.\n * @property {string[]} allFields - An array of all available fields in a lunr.Index.\n */\nlunr.Query = function (allFields) {\n this.clauses = []\n this.allFields = allFields\n}\n\n/**\n * Constants for indicating what kind of automatic wildcard insertion will be used when constructing a query clause.\n *\n * This allows wildcards to be added to the beginning and end of a term without having to manually do any string\n * concatenation.\n *\n * The wildcard constants can be bitwise combined to select both leading and trailing wildcards.\n *\n * @constant\n * @default\n * @property {number} wildcard.NONE - The term will have no wildcards inserted, this is the default behaviour\n * @property {number} wildcard.LEADING - Prepend the term with a wildcard, unless a leading wildcard already exists\n * @property {number} wildcard.TRAILING - Append a wildcard to the term, unless a trailing wildcard already exists\n * @see lunr.Query~Clause\n * @see lunr.Query#clause\n * @see lunr.Query#term\n * @example query term with trailing wildcard\n * query.term('foo', { wildcard: lunr.Query.wildcard.TRAILING })\n * @example query term with leading and trailing wildcard\n * query.term('foo', {\n * wildcard: lunr.Query.wildcard.LEADING | lunr.Query.wildcard.TRAILING\n * })\n */\n\nlunr.Query.wildcard = new String (\"*\")\nlunr.Query.wildcard.NONE = 0\nlunr.Query.wildcard.LEADING = 1\nlunr.Query.wildcard.TRAILING = 2\n\n/**\n * Constants for indicating what kind of presence a term must have in matching documents.\n *\n * @constant\n * @enum {number}\n * @see lunr.Query~Clause\n * @see lunr.Query#clause\n * @see lunr.Query#term\n * @example query term with required presence\n * query.term('foo', { presence: lunr.Query.presence.REQUIRED })\n */\nlunr.Query.presence = {\n /**\n * Term's presence in a document is optional, this is the default value.\n */\n OPTIONAL: 1,\n\n /**\n * Term's presence in a document is required, documents that do not contain\n * this term will not be returned.\n */\n REQUIRED: 2,\n\n /**\n * Term's presence in a document is prohibited, documents that do contain\n * this term will not be returned.\n */\n PROHIBITED: 3\n}\n\n/**\n * A single clause in a {@link lunr.Query} contains a term and details on how to\n * match that term against a {@link lunr.Index}.\n *\n * @typedef {Object} lunr.Query~Clause\n * @property {string[]} fields - The fields in an index this clause should be matched against.\n * @property {number} [boost=1] - Any boost that should be applied when matching this clause.\n * @property {number} [editDistance] - Whether the term should have fuzzy matching applied, and how fuzzy the match should be.\n * @property {boolean} [usePipeline] - Whether the term should be passed through the search pipeline.\n * @property {number} [wildcard=lunr.Query.wildcard.NONE] - Whether the term should have wildcards appended or prepended.\n * @property {number} [presence=lunr.Query.presence.OPTIONAL] - The terms presence in any matching documents.\n */\n\n/**\n * Adds a {@link lunr.Query~Clause} to this query.\n *\n * Unless the clause contains the fields to be matched all fields will be matched. In addition\n * a default boost of 1 is applied to the clause.\n *\n * @param {lunr.Query~Clause} clause - The clause to add to this query.\n * @see lunr.Query~Clause\n * @returns {lunr.Query}\n */\nlunr.Query.prototype.clause = function (clause) {\n if (!('fields' in clause)) {\n clause.fields = this.allFields\n }\n\n if (!('boost' in clause)) {\n clause.boost = 1\n }\n\n if (!('usePipeline' in clause)) {\n clause.usePipeline = true\n }\n\n if (!('wildcard' in clause)) {\n clause.wildcard = lunr.Query.wildcard.NONE\n }\n\n if ((clause.wildcard & lunr.Query.wildcard.LEADING) && (clause.term.charAt(0) != lunr.Query.wildcard)) {\n clause.term = \"*\" + clause.term\n }\n\n if ((clause.wildcard & lunr.Query.wildcard.TRAILING) && (clause.term.slice(-1) != lunr.Query.wildcard)) {\n clause.term = \"\" + clause.term + \"*\"\n }\n\n if (!('presence' in clause)) {\n clause.presence = lunr.Query.presence.OPTIONAL\n }\n\n this.clauses.push(clause)\n\n return this\n}\n\n/**\n * A negated query is one in which every clause has a presence of\n * prohibited. These queries require some special processing to return\n * the expected results.\n *\n * @returns boolean\n */\nlunr.Query.prototype.isNegated = function () {\n for (var i = 0; i < this.clauses.length; i++) {\n if (this.clauses[i].presence != lunr.Query.presence.PROHIBITED) {\n return false\n }\n }\n\n return true\n}\n\n/**\n * Adds a term to the current query, under the covers this will create a {@link lunr.Query~Clause}\n * to the list of clauses that make up this query.\n *\n * The term is used as is, i.e. no tokenization will be performed by this method. Instead conversion\n * to a token or token-like string should be done before calling this method.\n *\n * The term will be converted to a string by calling `toString`. Multiple terms can be passed as an\n * array, each term in the array will share the same options.\n *\n * @param {object|object[]} term - The term(s) to add to the query.\n * @param {object} [options] - Any additional properties to add to the query clause.\n * @returns {lunr.Query}\n * @see lunr.Query#clause\n * @see lunr.Query~Clause\n * @example adding a single term to a query\n * query.term(\"foo\")\n * @example adding a single term to a query and specifying search fields, term boost and automatic trailing wildcard\n * query.term(\"foo\", {\n * fields: [\"title\"],\n * boost: 10,\n * wildcard: lunr.Query.wildcard.TRAILING\n * })\n * @example using lunr.tokenizer to convert a string to tokens before using them as terms\n * query.term(lunr.tokenizer(\"foo bar\"))\n */\nlunr.Query.prototype.term = function (term, options) {\n if (Array.isArray(term)) {\n term.forEach(function (t) { this.term(t, lunr.utils.clone(options)) }, this)\n return this\n }\n\n var clause = options || {}\n clause.term = term.toString()\n\n this.clause(clause)\n\n return this\n}\nlunr.QueryParseError = function (message, start, end) {\n this.name = \"QueryParseError\"\n this.message = message\n this.start = start\n this.end = end\n}\n\nlunr.QueryParseError.prototype = new Error\nlunr.QueryLexer = function (str) {\n this.lexemes = []\n this.str = str\n this.length = str.length\n this.pos = 0\n this.start = 0\n this.escapeCharPositions = []\n}\n\nlunr.QueryLexer.prototype.run = function () {\n var state = lunr.QueryLexer.lexText\n\n while (state) {\n state = state(this)\n }\n}\n\nlunr.QueryLexer.prototype.sliceString = function () {\n var subSlices = [],\n sliceStart = this.start,\n sliceEnd = this.pos\n\n for (var i = 0; i < this.escapeCharPositions.length; i++) {\n sliceEnd = this.escapeCharPositions[i]\n subSlices.push(this.str.slice(sliceStart, sliceEnd))\n sliceStart = sliceEnd + 1\n }\n\n subSlices.push(this.str.slice(sliceStart, this.pos))\n this.escapeCharPositions.length = 0\n\n return subSlices.join('')\n}\n\nlunr.QueryLexer.prototype.emit = function (type) {\n this.lexemes.push({\n type: type,\n str: this.sliceString(),\n start: this.start,\n end: this.pos\n })\n\n this.start = this.pos\n}\n\nlunr.QueryLexer.prototype.escapeCharacter = function () {\n this.escapeCharPositions.push(this.pos - 1)\n this.pos += 1\n}\n\nlunr.QueryLexer.prototype.next = function () {\n if (this.pos >= this.length) {\n return lunr.QueryLexer.EOS\n }\n\n var char = this.str.charAt(this.pos)\n this.pos += 1\n return char\n}\n\nlunr.QueryLexer.prototype.width = function () {\n return this.pos - this.start\n}\n\nlunr.QueryLexer.prototype.ignore = function () {\n if (this.start == this.pos) {\n this.pos += 1\n }\n\n this.start = this.pos\n}\n\nlunr.QueryLexer.prototype.backup = function () {\n this.pos -= 1\n}\n\nlunr.QueryLexer.prototype.acceptDigitRun = function () {\n var char, charCode\n\n do {\n char = this.next()\n charCode = char.charCodeAt(0)\n } while (charCode > 47 && charCode < 58)\n\n if (char != lunr.QueryLexer.EOS) {\n this.backup()\n }\n}\n\nlunr.QueryLexer.prototype.more = function () {\n return this.pos < this.length\n}\n\nlunr.QueryLexer.EOS = 'EOS'\nlunr.QueryLexer.FIELD = 'FIELD'\nlunr.QueryLexer.TERM = 'TERM'\nlunr.QueryLexer.EDIT_DISTANCE = 'EDIT_DISTANCE'\nlunr.QueryLexer.BOOST = 'BOOST'\nlunr.QueryLexer.PRESENCE = 'PRESENCE'\n\nlunr.QueryLexer.lexField = function (lexer) {\n lexer.backup()\n lexer.emit(lunr.QueryLexer.FIELD)\n lexer.ignore()\n return lunr.QueryLexer.lexText\n}\n\nlunr.QueryLexer.lexTerm = function (lexer) {\n if (lexer.width() > 1) {\n lexer.backup()\n lexer.emit(lunr.QueryLexer.TERM)\n }\n\n lexer.ignore()\n\n if (lexer.more()) {\n return lunr.QueryLexer.lexText\n }\n}\n\nlunr.QueryLexer.lexEditDistance = function (lexer) {\n lexer.ignore()\n lexer.acceptDigitRun()\n lexer.emit(lunr.QueryLexer.EDIT_DISTANCE)\n return lunr.QueryLexer.lexText\n}\n\nlunr.QueryLexer.lexBoost = function (lexer) {\n lexer.ignore()\n lexer.acceptDigitRun()\n lexer.emit(lunr.QueryLexer.BOOST)\n return lunr.QueryLexer.lexText\n}\n\nlunr.QueryLexer.lexEOS = function (lexer) {\n if (lexer.width() > 0) {\n lexer.emit(lunr.QueryLexer.TERM)\n }\n}\n\n// This matches the separator used when tokenising fields\n// within a document. These should match otherwise it is\n// not possible to search for some tokens within a document.\n//\n// It is possible for the user to change the separator on the\n// tokenizer so it _might_ clash with any other of the special\n// characters already used within the search string, e.g. :.\n//\n// This means that it is possible to change the separator in\n// such a way that makes some words unsearchable using a search\n// string.\nlunr.QueryLexer.termSeparator = lunr.tokenizer.separator\n\nlunr.QueryLexer.lexText = function (lexer) {\n while (true) {\n var char = lexer.next()\n\n if (char == lunr.QueryLexer.EOS) {\n return lunr.QueryLexer.lexEOS\n }\n\n // Escape character is '\\'\n if (char.charCodeAt(0) == 92) {\n lexer.escapeCharacter()\n continue\n }\n\n if (char == \":\") {\n return lunr.QueryLexer.lexField\n }\n\n if (char == \"~\") {\n lexer.backup()\n if (lexer.width() > 0) {\n lexer.emit(lunr.QueryLexer.TERM)\n }\n return lunr.QueryLexer.lexEditDistance\n }\n\n if (char == \"^\") {\n lexer.backup()\n if (lexer.width() > 0) {\n lexer.emit(lunr.QueryLexer.TERM)\n }\n return lunr.QueryLexer.lexBoost\n }\n\n // \"+\" indicates term presence is required\n // checking for length to ensure that only\n // leading \"+\" are considered\n if (char == \"+\" && lexer.width() === 1) {\n lexer.emit(lunr.QueryLexer.PRESENCE)\n return lunr.QueryLexer.lexText\n }\n\n // \"-\" indicates term presence is prohibited\n // checking for length to ensure that only\n // leading \"-\" are considered\n if (char == \"-\" && lexer.width() === 1) {\n lexer.emit(lunr.QueryLexer.PRESENCE)\n return lunr.QueryLexer.lexText\n }\n\n if (char.match(lunr.QueryLexer.termSeparator)) {\n return lunr.QueryLexer.lexTerm\n }\n }\n}\n\nlunr.QueryParser = function (str, query) {\n this.lexer = new lunr.QueryLexer (str)\n this.query = query\n this.currentClause = {}\n this.lexemeIdx = 0\n}\n\nlunr.QueryParser.prototype.parse = function () {\n this.lexer.run()\n this.lexemes = this.lexer.lexemes\n\n var state = lunr.QueryParser.parseClause\n\n while (state) {\n state = state(this)\n }\n\n return this.query\n}\n\nlunr.QueryParser.prototype.peekLexeme = function () {\n return this.lexemes[this.lexemeIdx]\n}\n\nlunr.QueryParser.prototype.consumeLexeme = function () {\n var lexeme = this.peekLexeme()\n this.lexemeIdx += 1\n return lexeme\n}\n\nlunr.QueryParser.prototype.nextClause = function () {\n var completedClause = this.currentClause\n this.query.clause(completedClause)\n this.currentClause = {}\n}\n\nlunr.QueryParser.parseClause = function (parser) {\n var lexeme = parser.peekLexeme()\n\n if (lexeme == undefined) {\n return\n }\n\n switch (lexeme.type) {\n case lunr.QueryLexer.PRESENCE:\n return lunr.QueryParser.parsePresence\n case lunr.QueryLexer.FIELD:\n return lunr.QueryParser.parseField\n case lunr.QueryLexer.TERM:\n return lunr.QueryParser.parseTerm\n default:\n var errorMessage = \"expected either a field or a term, found \" + lexeme.type\n\n if (lexeme.str.length >= 1) {\n errorMessage += \" with value '\" + lexeme.str + \"'\"\n }\n\n throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)\n }\n}\n\nlunr.QueryParser.parsePresence = function (parser) {\n var lexeme = parser.consumeLexeme()\n\n if (lexeme == undefined) {\n return\n }\n\n switch (lexeme.str) {\n case \"-\":\n parser.currentClause.presence = lunr.Query.presence.PROHIBITED\n break\n case \"+\":\n parser.currentClause.presence = lunr.Query.presence.REQUIRED\n break\n default:\n var errorMessage = \"unrecognised presence operator'\" + lexeme.str + \"'\"\n throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)\n }\n\n var nextLexeme = parser.peekLexeme()\n\n if (nextLexeme == undefined) {\n var errorMessage = \"expecting term or field, found nothing\"\n throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)\n }\n\n switch (nextLexeme.type) {\n case lunr.QueryLexer.FIELD:\n return lunr.QueryParser.parseField\n case lunr.QueryLexer.TERM:\n return lunr.QueryParser.parseTerm\n default:\n var errorMessage = \"expecting term or field, found '\" + nextLexeme.type + \"'\"\n throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)\n }\n}\n\nlunr.QueryParser.parseField = function (parser) {\n var lexeme = parser.consumeLexeme()\n\n if (lexeme == undefined) {\n return\n }\n\n if (parser.query.allFields.indexOf(lexeme.str) == -1) {\n var possibleFields = parser.query.allFields.map(function (f) { return \"'\" + f + \"'\" }).join(', '),\n errorMessage = \"unrecognised field '\" + lexeme.str + \"', possible fields: \" + possibleFields\n\n throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)\n }\n\n parser.currentClause.fields = [lexeme.str]\n\n var nextLexeme = parser.peekLexeme()\n\n if (nextLexeme == undefined) {\n var errorMessage = \"expecting term, found nothing\"\n throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)\n }\n\n switch (nextLexeme.type) {\n case lunr.QueryLexer.TERM:\n return lunr.QueryParser.parseTerm\n default:\n var errorMessage = \"expecting term, found '\" + nextLexeme.type + \"'\"\n throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)\n }\n}\n\nlunr.QueryParser.parseTerm = function (parser) {\n var lexeme = parser.consumeLexeme()\n\n if (lexeme == undefined) {\n return\n }\n\n parser.currentClause.term = lexeme.str.toLowerCase()\n\n if (lexeme.str.indexOf(\"*\") != -1) {\n parser.currentClause.usePipeline = false\n }\n\n var nextLexeme = parser.peekLexeme()\n\n if (nextLexeme == undefined) {\n parser.nextClause()\n return\n }\n\n switch (nextLexeme.type) {\n case lunr.QueryLexer.TERM:\n parser.nextClause()\n return lunr.QueryParser.parseTerm\n case lunr.QueryLexer.FIELD:\n parser.nextClause()\n return lunr.QueryParser.parseField\n case lunr.QueryLexer.EDIT_DISTANCE:\n return lunr.QueryParser.parseEditDistance\n case lunr.QueryLexer.BOOST:\n return lunr.QueryParser.parseBoost\n case lunr.QueryLexer.PRESENCE:\n parser.nextClause()\n return lunr.QueryParser.parsePresence\n default:\n var errorMessage = \"Unexpected lexeme type '\" + nextLexeme.type + \"'\"\n throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)\n }\n}\n\nlunr.QueryParser.parseEditDistance = function (parser) {\n var lexeme = parser.consumeLexeme()\n\n if (lexeme == undefined) {\n return\n }\n\n var editDistance = parseInt(lexeme.str, 10)\n\n if (isNaN(editDistance)) {\n var errorMessage = \"edit distance must be numeric\"\n throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)\n }\n\n parser.currentClause.editDistance = editDistance\n\n var nextLexeme = parser.peekLexeme()\n\n if (nextLexeme == undefined) {\n parser.nextClause()\n return\n }\n\n switch (nextLexeme.type) {\n case lunr.QueryLexer.TERM:\n parser.nextClause()\n return lunr.QueryParser.parseTerm\n case lunr.QueryLexer.FIELD:\n parser.nextClause()\n return lunr.QueryParser.parseField\n case lunr.QueryLexer.EDIT_DISTANCE:\n return lunr.QueryParser.parseEditDistance\n case lunr.QueryLexer.BOOST:\n return lunr.QueryParser.parseBoost\n case lunr.QueryLexer.PRESENCE:\n parser.nextClause()\n return lunr.QueryParser.parsePresence\n default:\n var errorMessage = \"Unexpected lexeme type '\" + nextLexeme.type + \"'\"\n throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)\n }\n}\n\nlunr.QueryParser.parseBoost = function (parser) {\n var lexeme = parser.consumeLexeme()\n\n if (lexeme == undefined) {\n return\n }\n\n var boost = parseInt(lexeme.str, 10)\n\n if (isNaN(boost)) {\n var errorMessage = \"boost must be numeric\"\n throw new lunr.QueryParseError (errorMessage, lexeme.start, lexeme.end)\n }\n\n parser.currentClause.boost = boost\n\n var nextLexeme = parser.peekLexeme()\n\n if (nextLexeme == undefined) {\n parser.nextClause()\n return\n }\n\n switch (nextLexeme.type) {\n case lunr.QueryLexer.TERM:\n parser.nextClause()\n return lunr.QueryParser.parseTerm\n case lunr.QueryLexer.FIELD:\n parser.nextClause()\n return lunr.QueryParser.parseField\n case lunr.QueryLexer.EDIT_DISTANCE:\n return lunr.QueryParser.parseEditDistance\n case lunr.QueryLexer.BOOST:\n return lunr.QueryParser.parseBoost\n case lunr.QueryLexer.PRESENCE:\n parser.nextClause()\n return lunr.QueryParser.parsePresence\n default:\n var errorMessage = \"Unexpected lexeme type '\" + nextLexeme.type + \"'\"\n throw new lunr.QueryParseError (errorMessage, nextLexeme.start, nextLexeme.end)\n }\n}\n\n /**\n * export the module via AMD, CommonJS or as a browser global\n * Export code from https://github.com/umdjs/umd/blob/master/returnExports.js\n */\n ;(function (root, factory) {\n if (typeof define === 'function' && define.amd) {\n // AMD. Register as an anonymous module.\n define(factory)\n } else if (typeof exports === 'object') {\n /**\n * Node. Does not work with strict CommonJS, but\n * only CommonJS-like enviroments that support module.exports,\n * like Node.\n */\n module.exports = factory()\n } else {\n // Browser globals (root is window)\n root.lunr = factory()\n }\n }(this, function () {\n /**\n * Just return a value to define the module export.\n * This example returns an object, but the module\n * can return a function as the exported value.\n */\n return lunr\n }))\n})();\n", "/*!\n * escape-html\n * Copyright(c) 2012-2013 TJ Holowaychuk\n * Copyright(c) 2015 Andreas Lubbe\n * Copyright(c) 2015 Tiancheng \"Timothy\" Gu\n * MIT Licensed\n */\n\n'use strict';\n\n/**\n * Module variables.\n * @private\n */\n\nvar matchHtmlRegExp = /[\"'&<>]/;\n\n/**\n * Module exports.\n * @public\n */\n\nmodule.exports = escapeHtml;\n\n/**\n * Escape special characters in the given string of html.\n *\n * @param {string} string The string to escape for inserting into HTML\n * @return {string}\n * @public\n */\n\nfunction escapeHtml(string) {\n var str = '' + string;\n var match = matchHtmlRegExp.exec(str);\n\n if (!match) {\n return str;\n }\n\n var escape;\n var html = '';\n var index = 0;\n var lastIndex = 0;\n\n for (index = match.index; index < str.length; index++) {\n switch (str.charCodeAt(index)) {\n case 34: // \"\n escape = '"';\n break;\n case 38: // &\n escape = '&';\n break;\n case 39: // '\n escape = ''';\n break;\n case 60: // <\n escape = '<';\n break;\n case 62: // >\n escape = '>';\n break;\n default:\n continue;\n }\n\n if (lastIndex !== index) {\n html += str.substring(lastIndex, index);\n }\n\n lastIndex = index + 1;\n html += escape;\n }\n\n return lastIndex !== index\n ? html + str.substring(lastIndex, index)\n : html;\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A RTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport lunr from \"lunr\"\n\nimport \"~/polyfills\"\n\nimport { Search, SearchIndexConfig } from \"../../_\"\nimport {\n SearchMessage,\n SearchMessageType\n} from \"../message\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Add support for usage with `iframe-worker` polyfill\n *\n * While `importScripts` is synchronous when executed inside of a web worker,\n * it's not possible to provide a synchronous polyfilled implementation. The\n * cool thing is that awaiting a non-Promise is a noop, so extending the type\n * definition to return a `Promise` shouldn't break anything.\n *\n * @see https://bit.ly/2PjDnXi - GitHub comment\n */\ndeclare global {\n function importScripts(...urls: string[]): Promise | void\n}\n\n/* ----------------------------------------------------------------------------\n * Data\n * ------------------------------------------------------------------------- */\n\n/**\n * Search index\n */\nlet index: Search\n\n/* ----------------------------------------------------------------------------\n * Helper functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Fetch (= import) multi-language support through `lunr-languages`\n *\n * This function automatically imports the stemmers necessary to process the\n * languages, which are defined through the search index configuration.\n *\n * If the worker runs inside of an `iframe` (when using `iframe-worker` as\n * a shim), the base URL for the stemmers to be loaded must be determined by\n * searching for the first `script` element with a `src` attribute, which will\n * contain the contents of this script.\n *\n * @param config - Search index configuration\n *\n * @returns Promise resolving with no result\n */\nasync function setupSearchLanguages(\n config: SearchIndexConfig\n): Promise {\n let base = \"../lunr\"\n\n /* Detect `iframe-worker` and fix base URL */\n if (typeof parent !== \"undefined\" && \"IFrameWorker\" in parent) {\n const worker = document.querySelector(\"script[src]\")!\n const [path] = worker.src.split(\"/worker\")\n\n /* Prefix base with path */\n base = base.replace(\"..\", path)\n }\n\n /* Add scripts for languages */\n const scripts = []\n for (const lang of config.lang) {\n switch (lang) {\n\n /* Add segmenter for Japanese */\n case \"ja\":\n scripts.push(`${base}/tinyseg.js`)\n break\n\n /* Add segmenter for Hindi and Thai */\n case \"hi\":\n case \"th\":\n scripts.push(`${base}/wordcut.js`)\n break\n }\n\n /* Add language support */\n if (lang !== \"en\")\n scripts.push(`${base}/min/lunr.${lang}.min.js`)\n }\n\n /* Add multi-language support */\n if (config.lang.length > 1)\n scripts.push(`${base}/min/lunr.multi.min.js`)\n\n /* Load scripts synchronously */\n if (scripts.length)\n await importScripts(\n `${base}/min/lunr.stemmer.support.min.js`,\n ...scripts\n )\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Message handler\n *\n * @param message - Source message\n *\n * @returns Target message\n */\nexport async function handler(\n message: SearchMessage\n): Promise {\n switch (message.type) {\n\n /* Search setup message */\n case SearchMessageType.SETUP:\n await setupSearchLanguages(message.data.config)\n index = new Search(message.data)\n return {\n type: SearchMessageType.READY\n }\n\n /* Search query message */\n case SearchMessageType.QUERY:\n return {\n type: SearchMessageType.RESULT,\n data: index ? index.search(message.data) : { items: [] }\n }\n\n /* All other messages */\n default:\n throw new TypeError(\"Invalid message type\")\n }\n}\n\n/* ----------------------------------------------------------------------------\n * Worker\n * ------------------------------------------------------------------------- */\n\n/* @ts-expect-error - expose Lunr.js in global scope, or stemmers won't work */\nself.lunr = lunr\n\n/* Handle messages */\naddEventListener(\"message\", async ev => {\n postMessage(await handler(ev.data))\n})\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\n/* ----------------------------------------------------------------------------\n * Polyfills\n * ------------------------------------------------------------------------- */\n\n/* Polyfill `Object.entries` */\nif (!Object.entries)\n Object.entries = function (obj: object) {\n const data: [string, string][] = []\n for (const key of Object.keys(obj))\n // @ts-expect-error - ignore property access warning\n data.push([key, obj[key]])\n\n /* Return entries */\n return data\n }\n\n/* Polyfill `Object.values` */\nif (!Object.values)\n Object.values = function (obj: object) {\n const data: string[] = []\n for (const key of Object.keys(obj))\n // @ts-expect-error - ignore property access warning\n data.push(obj[key])\n\n /* Return values */\n return data\n }\n\n/* ------------------------------------------------------------------------- */\n\n/* Polyfills for `Element` */\nif (typeof Element !== \"undefined\") {\n\n /* Polyfill `Element.scrollTo` */\n if (!Element.prototype.scrollTo)\n Element.prototype.scrollTo = function (\n x?: ScrollToOptions | number, y?: number\n ): void {\n if (typeof x === \"object\") {\n this.scrollLeft = x.left!\n this.scrollTop = x.top!\n } else {\n this.scrollLeft = x!\n this.scrollTop = y!\n }\n }\n\n /* Polyfill `Element.replaceWith` */\n if (!Element.prototype.replaceWith)\n Element.prototype.replaceWith = function (\n ...nodes: Array\n ): void {\n const parent = this.parentNode\n if (parent) {\n if (nodes.length === 0)\n parent.removeChild(this)\n\n /* Replace children and create text nodes */\n for (let i = nodes.length - 1; i >= 0; i--) {\n let node = nodes[i]\n if (typeof node !== \"object\")\n node = document.createTextNode(node)\n else if (node.parentNode)\n node.parentNode.removeChild(node)\n\n /* Replace child or insert before previous sibling */\n if (!i)\n parent.replaceChild(node, this)\n else\n parent.insertBefore(this.previousSibling!, node)\n }\n }\n }\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport escapeHTML from \"escape-html\"\n\nimport { SearchIndexDocument } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search document\n */\nexport interface SearchDocument extends SearchIndexDocument {\n parent?: SearchIndexDocument /* Parent article */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Search document mapping\n */\nexport type SearchDocumentMap = Map\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create a search document mapping\n *\n * @param docs - Search index documents\n *\n * @returns Search document map\n */\nexport function setupSearchDocumentMap(\n docs: SearchIndexDocument[]\n): SearchDocumentMap {\n const documents = new Map()\n const parents = new Set()\n for (const doc of docs) {\n const [path, hash] = doc.location.split(\"#\")\n\n /* Extract location, title and tags */\n const location = doc.location\n const title = doc.title\n const tags = doc.tags\n\n /* Escape and cleanup text */\n const text = escapeHTML(doc.text)\n .replace(/\\s+(?=[,.:;!?])/g, \"\")\n .replace(/\\s+/g, \" \")\n\n /* Handle section */\n if (hash) {\n const parent = documents.get(path)!\n\n /* Ignore first section, override article */\n if (!parents.has(parent)) {\n parent.title = doc.title\n parent.text = text\n\n /* Remember that we processed the article */\n parents.add(parent)\n\n /* Add subsequent section */\n } else {\n documents.set(location, {\n location,\n title,\n text,\n parent\n })\n }\n\n /* Add article */\n } else {\n documents.set(location, {\n location,\n title,\n text,\n ...tags && { tags }\n })\n }\n }\n return documents\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport escapeHTML from \"escape-html\"\n\nimport { SearchIndexConfig } from \"../_\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search highlight function\n *\n * @param value - Value\n *\n * @returns Highlighted value\n */\nexport type SearchHighlightFn = (value: string) => string\n\n/**\n * Search highlight factory function\n *\n * @param query - Query value\n *\n * @returns Search highlight function\n */\nexport type SearchHighlightFactoryFn = (query: string) => SearchHighlightFn\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Create a search highlighter\n *\n * @param config - Search index configuration\n * @param escape - Whether to escape HTML\n *\n * @returns Search highlight factory function\n */\nexport function setupSearchHighlighter(\n config: SearchIndexConfig, escape: boolean\n): SearchHighlightFactoryFn {\n const separator = new RegExp(config.separator, \"img\")\n const highlight = (_: unknown, data: string, term: string) => {\n return `${data}${term}`\n }\n\n /* Return factory function */\n return (query: string) => {\n query = query\n .replace(/[\\s*+\\-:~^]+/g, \" \")\n .trim()\n\n /* Create search term match expression */\n const match = new RegExp(`(^|${config.separator})(${\n query\n .replace(/[|\\\\{}()[\\]^$+*?.-]/g, \"\\\\$&\")\n .replace(separator, \"|\")\n })`, \"img\")\n\n /* Highlight string value */\n return value => (\n escape\n ? escapeHTML(value)\n : value\n )\n .replace(match, highlight)\n .replace(/<\\/mark>(\\s+)]*>/img, \"$1\")\n }\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search query clause\n */\nexport interface SearchQueryClause {\n presence: lunr.Query.presence /* Clause presence */\n term: string /* Clause term */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Search query terms\n */\nexport type SearchQueryTerms = Record\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Parse a search query for analysis\n *\n * @param value - Query value\n *\n * @returns Search query clauses\n */\nexport function parseSearchQuery(\n value: string\n): SearchQueryClause[] {\n const query = new (lunr as any).Query([\"title\", \"text\"])\n const parser = new (lunr as any).QueryParser(value, query)\n\n /* Parse and return query clauses */\n parser.parse()\n return query.clauses\n}\n\n/**\n * Analyze the search query clauses in regard to the search terms found\n *\n * @param query - Search query clauses\n * @param terms - Search terms\n *\n * @returns Search query terms\n */\nexport function getSearchQueryTerms(\n query: SearchQueryClause[], terms: string[]\n): SearchQueryTerms {\n const clauses = new Set(query)\n\n /* Match query clauses against terms */\n const result: SearchQueryTerms = {}\n for (let t = 0; t < terms.length; t++)\n for (const clause of clauses)\n if (terms[t].startsWith(clause.term)) {\n result[clause.term] = true\n clauses.delete(clause)\n }\n\n /* Annotate unmatched non-stopword query clauses */\n for (const clause of clauses)\n if (lunr.stopWordFilter?.(clause.term as any))\n result[clause.term] = false\n\n /* Return query terms */\n return result\n}\n", "/*\n * Copyright (c) 2016-2022 Martin Donath \n *\n * Permission is hereby granted, free of charge, to any person obtaining a copy\n * of this software and associated documentation files (the \"Software\"), to\n * deal in the Software without restriction, including without limitation the\n * rights to use, copy, modify, merge, publish, distribute, sublicense, and/or\n * sell copies of the Software, and to permit persons to whom the Software is\n * furnished to do so, subject to the following conditions:\n *\n * The above copyright notice and this permission notice shall be included in\n * all copies or substantial portions of the Software.\n *\n * THE SOFTWARE IS PROVIDED \"AS IS\", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR\n * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,\n * FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT. IN NO EVENT SHALL THE\n * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER\n * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING\n * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS\n * IN THE SOFTWARE.\n */\n\nimport {\n SearchDocument,\n SearchDocumentMap,\n setupSearchDocumentMap\n} from \"../document\"\nimport {\n SearchHighlightFactoryFn,\n setupSearchHighlighter\n} from \"../highlighter\"\nimport { SearchOptions } from \"../options\"\nimport {\n SearchQueryTerms,\n getSearchQueryTerms,\n parseSearchQuery\n} from \"../query\"\n\n/* ----------------------------------------------------------------------------\n * Types\n * ------------------------------------------------------------------------- */\n\n/**\n * Search index configuration\n */\nexport interface SearchIndexConfig {\n lang: string[] /* Search languages */\n separator: string /* Search separator */\n}\n\n/**\n * Search index document\n */\nexport interface SearchIndexDocument {\n location: string /* Document location */\n title: string /* Document title */\n text: string /* Document text */\n tags?: string[] /* Document tags */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Search index\n *\n * This interfaces describes the format of the `search_index.json` file which\n * is automatically built by the MkDocs search plugin.\n */\nexport interface SearchIndex {\n config: SearchIndexConfig /* Search index configuration */\n docs: SearchIndexDocument[] /* Search index documents */\n options: SearchOptions /* Search options */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Search metadata\n */\nexport interface SearchMetadata {\n score: number /* Score (relevance) */\n terms: SearchQueryTerms /* Search query terms */\n}\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Search result document\n */\nexport type SearchResultDocument = SearchDocument & SearchMetadata\n\n/**\n * Search result item\n */\nexport type SearchResultItem = SearchResultDocument[]\n\n/* ------------------------------------------------------------------------- */\n\n/**\n * Search result\n */\nexport interface SearchResult {\n items: SearchResultItem[] /* Search result items */\n suggestions?: string[] /* Search suggestions */\n}\n\n/* ----------------------------------------------------------------------------\n * Functions\n * ------------------------------------------------------------------------- */\n\n/**\n * Compute the difference of two lists of strings\n *\n * @param a - 1st list of strings\n * @param b - 2nd list of strings\n *\n * @returns Difference\n */\nfunction difference(a: string[], b: string[]): string[] {\n const [x, y] = [new Set(a), new Set(b)]\n return [\n ...new Set([...x].filter(value => !y.has(value)))\n ]\n}\n\n/* ----------------------------------------------------------------------------\n * Class\n * ------------------------------------------------------------------------- */\n\n/**\n * Search index\n */\nexport class Search {\n\n /**\n * Search document mapping\n *\n * A mapping of URLs (including hash fragments) to the actual articles and\n * sections of the documentation. The search document mapping must be created\n * regardless of whether the index was prebuilt or not, as Lunr.js itself\n * only stores the actual index.\n */\n protected documents: SearchDocumentMap\n\n /**\n * Search highlight factory function\n */\n protected highlight: SearchHighlightFactoryFn\n\n /**\n * The underlying Lunr.js search index\n */\n protected index: lunr.Index\n\n /**\n * Search options\n */\n protected options: SearchOptions\n\n /**\n * Create the search integration\n *\n * @param data - Search index\n */\n public constructor({ config, docs, options }: SearchIndex) {\n this.options = options\n\n /* Set up document map and highlighter factory */\n this.documents = setupSearchDocumentMap(docs)\n this.highlight = setupSearchHighlighter(config, false)\n\n /* Set separator for tokenizer */\n lunr.tokenizer.separator = new RegExp(config.separator)\n\n /* Create search index */\n this.index = lunr(function () {\n\n /* Set up multi-language support */\n if (config.lang.length === 1 && config.lang[0] !== \"en\") {\n this.use((lunr as any)[config.lang[0]])\n } else if (config.lang.length > 1) {\n this.use((lunr as any).multiLanguage(...config.lang))\n }\n\n /* Compute functions to be removed from the pipeline */\n const fns = difference([\n \"trimmer\", \"stopWordFilter\", \"stemmer\"\n ], options.pipeline)\n\n /* Remove functions from the pipeline for registered languages */\n for (const lang of config.lang.map(language => (\n language === \"en\" ? lunr : (lunr as any)[language]\n ))) {\n for (const fn of fns) {\n this.pipeline.remove(lang[fn])\n this.searchPipeline.remove(lang[fn])\n }\n }\n\n /* Set up reference */\n this.ref(\"location\")\n\n /* Set up fields */\n this.field(\"title\", { boost: 1e3 })\n this.field(\"text\")\n this.field(\"tags\", { boost: 1e6 })\n\n /* Index documents */\n for (const doc of docs)\n this.add(doc)\n })\n }\n\n /**\n * Search for matching documents\n *\n * The search index which MkDocs provides is divided up into articles, which\n * contain the whole content of the individual pages, and sections, which only\n * contain the contents of the subsections obtained by breaking the individual\n * pages up at `h1` ... `h6`. As there may be many sections on different pages\n * with identical titles (for example within this very project, e.g. \"Usage\"\n * or \"Installation\"), they need to be put into the context of the containing\n * page. For this reason, section results are grouped within their respective\n * articles which are the top-level results that are returned.\n *\n * @param query - Query value\n *\n * @returns Search results\n */\n public search(query: string): SearchResult {\n if (query) {\n try {\n const highlight = this.highlight(query)\n\n /* Parse query to extract clauses for analysis */\n const clauses = parseSearchQuery(query)\n .filter(clause => (\n clause.presence !== lunr.Query.presence.PROHIBITED\n ))\n\n /* Perform search and post-process results */\n const groups = this.index.search(`${query}*`)\n\n /* Apply post-query boosts based on title and search query terms */\n .reduce((item, { ref, score, matchData }) => {\n const document = this.documents.get(ref)\n if (typeof document !== \"undefined\") {\n const { location, title, text, tags, parent } = document\n\n /* Compute and analyze search query terms */\n const terms = getSearchQueryTerms(\n clauses,\n Object.keys(matchData.metadata)\n )\n\n /* Highlight title and text and apply post-query boosts */\n const boost = +!parent + +Object.values(terms).every(t => t)\n item.push({\n location,\n title: highlight(title),\n text: highlight(text),\n ...tags && { tags: tags.map(highlight) },\n score: score * (1 + boost),\n terms\n })\n }\n return item\n }, [])\n\n /* Sort search results again after applying boosts */\n .sort((a, b) => b.score - a.score)\n\n /* Group search results by page */\n .reduce((items, result) => {\n const document = this.documents.get(result.location)\n if (typeof document !== \"undefined\") {\n const ref = \"parent\" in document\n ? document.parent!.location\n : document.location\n items.set(ref, [...items.get(ref) || [], result])\n }\n return items\n }, new Map())\n\n /* Generate search suggestions, if desired */\n let suggestions: string[] | undefined\n if (this.options.suggestions) {\n const titles = this.index.query(builder => {\n for (const clause of clauses)\n builder.term(clause.term, {\n fields: [\"title\"],\n presence: lunr.Query.presence.REQUIRED,\n wildcard: lunr.Query.wildcard.TRAILING\n })\n })\n\n /* Retrieve suggestions for best match */\n suggestions = titles.length\n ? Object.keys(titles[0].matchData.metadata)\n : []\n }\n\n /* Return items and suggestions */\n return {\n items: [...groups.values()],\n ...typeof suggestions !== \"undefined\" && { suggestions }\n }\n\n /* Log errors to console (for now) */\n } catch {\n console.warn(`Invalid query: ${query} \u2013 see https://bit.ly/2s3ChXG`)\n }\n }\n\n /* Return nothing in case of error or empty query */\n return { items: [] }\n }\n}\n"], + "mappings": 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\ No newline at end of file diff --git a/notes/basics/blocksOfCode.java b/basics/blocksOfCode.java similarity index 100% rename from notes/basics/blocksOfCode.java rename to basics/blocksOfCode.java diff --git a/notes/basics/booleanDataType.java b/basics/booleanDataType.java similarity index 100% rename from notes/basics/booleanDataType.java rename to basics/booleanDataType.java diff --git a/notes/basics/charDataType.java b/basics/charDataType.java similarity index 100% rename from notes/basics/charDataType.java rename to basics/charDataType.java diff --git a/notes/basics/charIsLikeInt.java b/basics/charIsLikeInt.java similarity index 100% rename from notes/basics/charIsLikeInt.java rename to basics/charIsLikeInt.java diff --git a/notes/basics/doubleDataType.java b/basics/doubleDataType.java similarity index 100% rename from notes/basics/doubleDataType.java rename to basics/doubleDataType.java diff --git a/notes/basics/escapeSequences.java b/basics/escapeSequences.java similarity index 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b/basics/underScoreForReadability.java similarity index 100% rename from notes/basics/underScoreForReadability.java rename to basics/underScoreForReadability.java diff --git a/clear.bat b/clear.bat deleted file mode 100644 index 933a5399..00000000 --- a/clear.bat +++ /dev/null @@ -1,2 +0,0 @@ -@echo off -DEl /S /Q *.class \ No newline at end of file diff --git a/clear.sh b/clear.sh deleted file mode 100644 index caa96b4b..00000000 --- a/clear.sh +++ /dev/null @@ -1,2 +0,0 @@ - find . -name '*.class' -delete - find . -name '*.json' -delete \ No newline at end of file diff --git a/notes/controlStatements/examResult.java b/controlStatements/examResult.java similarity index 100% rename from notes/controlStatements/examResult.java rename to controlStatements/examResult.java diff --git a/notes/controlStatements/forEach.java b/controlStatements/forEach.java similarity index 100% rename from notes/controlStatements/forEach.java rename to controlStatements/forEach.java diff --git 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    + + + + + + + + +

    Controls

    + +

    A control statement in java is a statement that determines whether the other statements will be executed or not. It controls the flow of a program.

    +

    If Statement Examples

    +

    1. Boolean Variable as Argument

    +
    class IfTest {
+    public static void main(String[] args) {
+        boolean x = false;
+        if (x = false) { // This compile as if statement expects boolean value as parameter. This also throws false.
+            System.out.println("Hello Mercury");
+        } else {
+            System.out.println("Hello Venus");
+        }
+    }
+}
+
    +

    2. Integer Variable as Argument

    +

    This doesn't compile as if statement expects boolean value as parameter. +

    class IfTest{
+    public static void main(String[] args){
+        int x = 0;
+        if(x){ // This doesn't compile as if statement expects boolean value as parameter.
+            System.out.println("Hello Mercury");
+        }else{
+            System.out.println("Hello Venus");
+        }
+    }
+}
+

    + + +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/controlStatements/missingBreak.java b/controlStatements/missingBreak.java similarity index 100% rename from notes/controlStatements/missingBreak.java rename to controlStatements/missingBreak.java diff --git a/notes/controlStatements/nonRecursive/Fibonacci/Fibonacci.java b/controlStatements/nonRecursive/Fibonacci/Fibonacci.java similarity index 100% rename from notes/controlStatements/nonRecursive/Fibonacci/Fibonacci.java rename to controlStatements/nonRecursive/Fibonacci/Fibonacci.java diff --git a/notes/controlStatements/nonRecursive/Fibonacci/FibonacciDemo.java b/controlStatements/nonRecursive/Fibonacci/FibonacciDemo.java similarity index 100% rename from notes/controlStatements/nonRecursive/Fibonacci/FibonacciDemo.java rename to controlStatements/nonRecursive/Fibonacci/FibonacciDemo.java diff --git a/notes/controlStatements/recursion/Factorial/Factorial.java b/controlStatements/recursion/Factorial/Factorial.java similarity index 100% rename from notes/controlStatements/recursion/Factorial/Factorial.java rename to controlStatements/recursion/Factorial/Factorial.java diff --git a/notes/controlStatements/recursion/Factorial/FactorialDemo.java b/controlStatements/recursion/Factorial/FactorialDemo.java similarity index 100% rename from notes/controlStatements/recursion/Factorial/FactorialDemo.java rename to controlStatements/recursion/Factorial/FactorialDemo.java diff --git a/notes/controlStatements/recursion/Fibonacci/Fibonacci.java b/controlStatements/recursion/Fibonacci/Fibonacci.java similarity index 100% rename from notes/controlStatements/recursion/Fibonacci/Fibonacci.java rename to controlStatements/recursion/Fibonacci/Fibonacci.java diff --git a/notes/controlStatements/recursion/Fibonacci/FibonacciDemo.java b/controlStatements/recursion/Fibonacci/FibonacciDemo.java similarity index 100% rename from notes/controlStatements/recursion/Fibonacci/FibonacciDemo.java rename to controlStatements/recursion/Fibonacci/FibonacciDemo.java diff --git a/notes/controlStatements/summationOfFirstFiveElement.java b/controlStatements/summationOfFirstFiveElement.java similarity index 100% rename from notes/controlStatements/summationOfFirstFiveElement.java rename to controlStatements/summationOfFirstFiveElement.java diff --git a/notes/controlStatements/switchStatement.java b/controlStatements/switchStatement.java similarity index 100% rename from notes/controlStatements/switchStatement.java rename to controlStatements/switchStatement.java diff --git a/notes/controlStatements/testCases/doWhile/asExitControlledLoop.java b/controlStatements/testCases/doWhile/asExitControlledLoop.java similarity index 100% rename from notes/controlStatements/testCases/doWhile/asExitControlledLoop.java rename to controlStatements/testCases/doWhile/asExitControlledLoop.java diff --git a/notes/controlStatements/testCases/doWhile/blockVariableDeclaration.java b/controlStatements/testCases/doWhile/blockVariableDeclaration.java similarity index 100% rename from notes/controlStatements/testCases/doWhile/blockVariableDeclaration.java rename to controlStatements/testCases/doWhile/blockVariableDeclaration.java diff --git a/notes/controlStatements/testCases/doWhile/finalValueCompairing.java b/controlStatements/testCases/doWhile/finalValueCompairing.java similarity index 100% rename from notes/controlStatements/testCases/doWhile/finalValueCompairing.java rename to controlStatements/testCases/doWhile/finalValueCompairing.java diff --git a/notes/controlStatements/testCases/doWhile/inlineExecution.java b/controlStatements/testCases/doWhile/inlineExecution.java similarity index 100% rename from notes/controlStatements/testCases/doWhile/inlineExecution.java rename to controlStatements/testCases/doWhile/inlineExecution.java diff --git a/notes/controlStatements/testCases/doWhile/inlinePrinting.java b/controlStatements/testCases/doWhile/inlinePrinting.java similarity index 100% rename from notes/controlStatements/testCases/doWhile/inlinePrinting.java rename to controlStatements/testCases/doWhile/inlinePrinting.java diff --git a/notes/controlStatements/testCases/doWhile/inlineVariableDeclaration.java b/controlStatements/testCases/doWhile/inlineVariableDeclaration.java similarity index 100% rename from notes/controlStatements/testCases/doWhile/inlineVariableDeclaration.java rename to controlStatements/testCases/doWhile/inlineVariableDeclaration.java diff --git a/notes/controlStatements/testCases/doWhile/unReachableStatement.java b/controlStatements/testCases/doWhile/unReachableStatement.java similarity index 100% rename from notes/controlStatements/testCases/doWhile/unReachableStatement.java rename to controlStatements/testCases/doWhile/unReachableStatement.java diff --git a/notes/controlStatements/testCases/doWhile/valueAssignAndCompairing.java b/controlStatements/testCases/doWhile/valueAssignAndCompairing.java similarity index 100% rename from notes/controlStatements/testCases/doWhile/valueAssignAndCompairing.java rename to controlStatements/testCases/doWhile/valueAssignAndCompairing.java diff --git a/notes/controlStatements/testCases/forLoop/IsThatInfinite.java b/controlStatements/testCases/forLoop/IsThatInfinite.java similarity index 100% rename from notes/controlStatements/testCases/forLoop/IsThatInfinite.java rename to controlStatements/testCases/forLoop/IsThatInfinite.java diff --git a/notes/controlStatements/testCases/forLoop/byDefaultTrue.java b/controlStatements/testCases/forLoop/byDefaultTrue.java similarity index 100% rename from notes/controlStatements/testCases/forLoop/byDefaultTrue.java rename to controlStatements/testCases/forLoop/byDefaultTrue.java diff --git a/notes/controlStatements/testCases/forLoop/initializationAndUpdationIsPrint.java b/controlStatements/testCases/forLoop/initializationAndUpdationIsPrint.java similarity index 100% rename from notes/controlStatements/testCases/forLoop/initializationAndUpdationIsPrint.java rename to controlStatements/testCases/forLoop/initializationAndUpdationIsPrint.java diff --git a/notes/controlStatements/testCases/forLoop/initializationIsPrint.java b/controlStatements/testCases/forLoop/initializationIsPrint.java similarity index 100% rename from notes/controlStatements/testCases/forLoop/initializationIsPrint.java rename to controlStatements/testCases/forLoop/initializationIsPrint.java diff --git a/notes/controlStatements/testCases/forLoop/inlinePrinting.java b/controlStatements/testCases/forLoop/inlinePrinting.java similarity index 100% rename from notes/controlStatements/testCases/forLoop/inlinePrinting.java rename to controlStatements/testCases/forLoop/inlinePrinting.java diff --git a/notes/controlStatements/testCases/forLoop/inlineVariableDeclaration.java b/controlStatements/testCases/forLoop/inlineVariableDeclaration.java similarity index 100% rename from notes/controlStatements/testCases/forLoop/inlineVariableDeclaration.java rename to controlStatements/testCases/forLoop/inlineVariableDeclaration.java diff --git a/notes/controlStatements/testCases/forLoop/noInitializationConditionUpdation.java b/controlStatements/testCases/forLoop/noInitializationConditionUpdation.java similarity index 100% rename from notes/controlStatements/testCases/forLoop/noInitializationConditionUpdation.java rename to controlStatements/testCases/forLoop/noInitializationConditionUpdation.java diff --git a/notes/controlStatements/testCases/forLoop/noInitializationConditionUpdationInlinePrint.java b/controlStatements/testCases/forLoop/noInitializationConditionUpdationInlinePrint.java similarity index 100% rename from notes/controlStatements/testCases/forLoop/noInitializationConditionUpdationInlinePrint.java rename to controlStatements/testCases/forLoop/noInitializationConditionUpdationInlinePrint.java diff --git a/notes/controlStatements/testCases/forLoop/normalExecution.java b/controlStatements/testCases/forLoop/normalExecution.java similarity index 100% rename from notes/controlStatements/testCases/forLoop/normalExecution.java rename to controlStatements/testCases/forLoop/normalExecution.java diff --git a/notes/controlStatements/testCases/forLoop/onlyForLoop.java b/controlStatements/testCases/forLoop/onlyForLoop.java similarity index 100% rename from notes/controlStatements/testCases/forLoop/onlyForLoop.java rename to controlStatements/testCases/forLoop/onlyForLoop.java diff --git a/notes/controlStatements/testCases/forLoop/trueCondition.java b/controlStatements/testCases/forLoop/trueCondition.java similarity index 100% rename from notes/controlStatements/testCases/forLoop/trueCondition.java rename to controlStatements/testCases/forLoop/trueCondition.java diff --git a/notes/controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument.java b/controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument.java similarity index 100% rename from notes/controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument.java rename to controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument.java diff --git a/notes/controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument01.java b/controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument01.java similarity index 100% rename from notes/controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument01.java rename to controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument01.java diff --git a/notes/controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument02.java b/controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument02.java similarity index 100% rename from notes/controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument02.java rename to controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument02.java diff --git a/notes/controlStatements/testCases/ifElse/intAsArgument.java b/controlStatements/testCases/ifElse/intAsArgument.java similarity index 100% rename from notes/controlStatements/testCases/ifElse/intAsArgument.java rename to controlStatements/testCases/ifElse/intAsArgument.java diff --git a/notes/controlStatements/testCases/ifElse/intValueCompareAsArgument.java b/controlStatements/testCases/ifElse/intValueCompareAsArgument.java similarity index 100% rename from notes/controlStatements/testCases/ifElse/intValueCompareAsArgument.java rename to controlStatements/testCases/ifElse/intValueCompareAsArgument.java diff --git a/notes/controlStatements/testCases/ifElse/intVariableAsArgument.java b/controlStatements/testCases/ifElse/intVariableAsArgument.java similarity index 100% rename from notes/controlStatements/testCases/ifElse/intVariableAsArgument.java rename to controlStatements/testCases/ifElse/intVariableAsArgument.java diff --git a/notes/controlStatements/testCases/ifElse/trueAsArgument.java b/controlStatements/testCases/ifElse/trueAsArgument.java similarity index 100% rename from notes/controlStatements/testCases/ifElse/trueAsArgument.java rename to controlStatements/testCases/ifElse/trueAsArgument.java diff --git a/notes/controlStatements/testCases/ifElse/withoutBraces/declaringVariable.java b/controlStatements/testCases/ifElse/withoutBraces/declaringVariable.java similarity index 100% rename from notes/controlStatements/testCases/ifElse/withoutBraces/declaringVariable.java rename to controlStatements/testCases/ifElse/withoutBraces/declaringVariable.java diff --git a/notes/controlStatements/testCases/ifElse/withoutBraces/declaringVariableInsideBlockIfElse.java b/controlStatements/testCases/ifElse/withoutBraces/declaringVariableInsideBlockIfElse.java similarity index 100% rename from notes/controlStatements/testCases/ifElse/withoutBraces/declaringVariableInsideBlockIfElse.java rename to controlStatements/testCases/ifElse/withoutBraces/declaringVariableInsideBlockIfElse.java diff --git a/notes/controlStatements/testCases/ifElse/withoutBraces/onlyIf.java b/controlStatements/testCases/ifElse/withoutBraces/onlyIf.java similarity index 100% rename from notes/controlStatements/testCases/ifElse/withoutBraces/onlyIf.java rename to controlStatements/testCases/ifElse/withoutBraces/onlyIf.java diff --git a/notes/controlStatements/testCases/ifElse/withoutBraces/printMessage.java b/controlStatements/testCases/ifElse/withoutBraces/printMessage.java similarity index 100% rename from notes/controlStatements/testCases/ifElse/withoutBraces/printMessage.java rename to controlStatements/testCases/ifElse/withoutBraces/printMessage.java diff --git a/notes/controlStatements/testCases/while/finalValueCompairing.java b/controlStatements/testCases/while/finalValueCompairing.java similarity index 100% rename from notes/controlStatements/testCases/while/finalValueCompairing.java rename to controlStatements/testCases/while/finalValueCompairing.java diff --git a/notes/controlStatements/testCases/while/inlinePrinting.java b/controlStatements/testCases/while/inlinePrinting.java similarity index 100% rename from notes/controlStatements/testCases/while/inlinePrinting.java rename to controlStatements/testCases/while/inlinePrinting.java diff --git a/notes/controlStatements/testCases/while/inlineVariableDeclaration.java b/controlStatements/testCases/while/inlineVariableDeclaration.java similarity index 100% rename from notes/controlStatements/testCases/while/inlineVariableDeclaration.java rename to controlStatements/testCases/while/inlineVariableDeclaration.java diff --git a/notes/controlStatements/testCases/while/literalCompairing.java b/controlStatements/testCases/while/literalCompairing.java similarity index 100% rename from notes/controlStatements/testCases/while/literalCompairing.java rename to controlStatements/testCases/while/literalCompairing.java diff --git a/notes/controlStatements/testCases/while/unreachableStatement.java b/controlStatements/testCases/while/unreachableStatement.java similarity index 100% rename from notes/controlStatements/testCases/while/unreachableStatement.java rename to controlStatements/testCases/while/unreachableStatement.java diff --git a/notes/controlStatements/testCases/while/unreachableStatementInsideFalse.java b/controlStatements/testCases/while/unreachableStatementInsideFalse.java similarity index 100% rename from notes/controlStatements/testCases/while/unreachableStatementInsideFalse.java rename to controlStatements/testCases/while/unreachableStatementInsideFalse.java diff --git a/notes/controlStatements/testCases/while/variableComparing.java b/controlStatements/testCases/while/variableComparing.java similarity index 100% rename from notes/controlStatements/testCases/while/variableComparing.java rename to controlStatements/testCases/while/variableComparing.java diff --git a/notes/controlStatements/testCases/while/variableComparing01.java b/controlStatements/testCases/while/variableComparing01.java similarity index 100% rename from notes/controlStatements/testCases/while/variableComparing01.java rename to controlStatements/testCases/while/variableComparing01.java diff --git a/notes/dataStructures/TowerOfHanoi/TOH.java b/dataStructures/TowerOfHanoi/TOH.java similarity index 100% rename from notes/dataStructures/TowerOfHanoi/TOH.java rename to dataStructures/TowerOfHanoi/TOH.java diff --git a/notes/dataStructures/TowerOfHanoi/TOHDemo.java b/dataStructures/TowerOfHanoi/TOHDemo.java similarity index 100% rename from notes/dataStructures/TowerOfHanoi/TOHDemo.java rename to dataStructures/TowerOfHanoi/TOHDemo.java diff --git a/notes/dataStructures/blockchain/Block.java b/dataStructures/blockchain/Block.java similarity index 100% rename from notes/dataStructures/blockchain/Block.java rename to dataStructures/blockchain/Block.java diff --git a/notes/dataStructures/blockchain/Main.java b/dataStructures/blockchain/Main.java similarity index 100% rename from notes/dataStructures/blockchain/Main.java rename to dataStructures/blockchain/Main.java diff --git a/dataStructures/index.html b/dataStructures/index.html new file mode 100644 index 00000000..51dc0e65 --- /dev/null +++ b/dataStructures/index.html @@ -0,0 +1,1624 @@ + + + + + + + + + + + + + + + + + + + + Data Structures - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Data Structures

    + +

    Examples

    +

    1. Stack

    +
    class Sample{
+    public int[] itsStack = new int[];
+    public boolean isEmpty(){
+
+    }
+
+    public boolean isFull(){
+
+    }
+
+    public boolean push(){
+
+    }
+
+    public boolean pop(){
+
+    }
+
+    public int top(){
+
+    }
+
+    public void display(){
+
+    }
+
+
+}
+
+class Stack{
+    public static void main(String[] args){
+
+    }
+}
+
    +

    2. Tower Of Hanoi

    +

    // TOH refers to Tower Of Hanoi.
+public class TOH{
+    // Defining a method which accepts parameters as: no of disks, name of rods (should match according to name of formal arguments passed).
+    public void tower(int noOfDisks, String sourceRod, String destinationRod, String auxiliaryRod){
+        if(noOfDisks == 1){
+            System.out.format("\nRod %d moved from %s to %s",1,sourceRod,destinationRod);
+            return ;
+        }else{
+            // Key Algorithms :
+            tower(noOfDisks - 1, "Source Rod","Auxiliary Rod","Destination Rod");
+            System.out.format("\nDisk %d moved from %s to %s",noOfDisks,sourceRod,destinationRod);
+            tower(noOfDisks - 1, "Auxiliary Rod","Destination Rod","Source Rod");
+        }        
+    }
+
+}
+
    +Driver Code +
    // TOHDemo refers to Tower Of Hanoi Demo.
+class TOHDemo{
+    public static void main(String[] args){
+        // This accepts the no of disks
+        int noOfDisks = 4;
+        TOH objectOne = new TOH();
+        // Passing the no of disks and rod names to recursive function.
+        objectOne.tower(noOfDisks,"Source Rod","Destination Rod","Auxilary Rod");
+    }
+}
+

    +

    2. Block Chain

    +

    import java.util.Arrays;
+
+public class Block{
+    private int previousHash;
+    private String[] transaction;
+    private int blockHash;
+
+    public Block(int previousHash, String[] transaction){
+        this.previousHash = previousHash;
+        this.transaction = transaction;
+
+        Object[] contents = {Arrays.hashCode(transaction),previousHash};
+        this.blockHash = Arrays.hashCode(contents);
+    }
+
+    public int getPreviousHash(){
+        return previousHash;
+    }
+
+    public String[] getTransaction(){
+        return transaction;
+    }
+}
+
    +Driver Code +
    import java.lang.*;
+import java.util.*;
+import java.text.*;
+
+public class Main{
+    ArrayList<Block> blockchain = new ArrayList<>();
+    public static void main(String[] args){
+        Block genesisBlock = new Block(previousHash)
+    }
+}
+

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    ActionListener

    +
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    • Defines one method to receive actions events.
      • +
    +

    Methods
    +void actionPerformed(ActionEvet ae)

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    + Copyright © 2020 Arjun Adhikari +
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    Adapter Class

    +
      +
    • Java compiles a special feature, called an adapter class, that can simplify he creation of event handlers in certain situations.
      • +
    • An adapter class prvovides an empty implementation of all methods in an EventListener interface.
      • +
    • It is useful when you want to receive and process only some of the events that are handled by a particular event listener interface .
      • +
    +

    Commonly used Listener Interface implemented by Adapter Class :

    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    Adapter ClassListener Interface
    ComponentAdapterComponentListener
    ContainerAdapterContainerListener
    FocusAdapterFocusListener
    KeyAdapterKeyListener
    MouseMotionAdapterMouseMotionListener, MouseListener & MouseWheelListener
    WindowAdapterWindowListener, WindowFocusListener & WindowStateListener
    + + +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/events/AdjustmentListener/index.html b/events/AdjustmentListener/index.html new file mode 100644 index 00000000..21518ec2 --- /dev/null +++ b/events/AdjustmentListener/index.html @@ -0,0 +1,1379 @@ + + + + + + + + + + + + + + + + + + **AdjustmentListener** - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    AdjustmentListener

    +
      +
    • Defines one methods to receive adjustment events.
      • +
    +

    Methods
    + 1. void adjustmentValueChanged(AdjustmentEvent ae)

    + + +
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    + Copyright © 2020 Arjun Adhikari +
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    ComponentListener

    +
      +
    • Defines 4 methods to recognize when a component is hidden , moved , resized or shown.
      • +
    +

    Methods + 1. void componentResized(ComponentEvent ce) + 2. void componentMoved(ComponentEvent ce) + 3. void componentShown(ComponentEvent ce) + 4. void componentHidden(ComponentEvent ce)

    + + +
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    + Copyright © 2020 Arjun Adhikari +
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    ContainerListener

    +
      +
    • Defines 2 methods to recognize when a componenet is added to or removed from a container.
      • +
    +

    Methods +1. void containerAdded(ContainerEvent ce) +2. void containerRemoved(ContainerEvent ce)

    + + +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/events/EVENTCLASSES/index.html b/events/EVENTCLASSES/index.html new file mode 100644 index 00000000..3383219c --- /dev/null +++ b/events/EVENTCLASSES/index.html @@ -0,0 +1,1635 @@ + + + + + + + + + + + + + + + + + + Event Classes - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Event Classes

    +

    Event Classes

    +

    Action Event Class

    +
      +
    • An Action Event is generated when:
      • +
    • a button is pressed.
      • +
    • a list item is double clicked.
      • +
    • menu item is clicked.
      • +
    +

    Constructor

    +
      +
    • ActionEvent(Object src, int type, String cmd)
      • +
    • ActionEvent(Object src, int type, String cmd, int modifiers)
      • +
    • ActionEvent(Object src, int type, String cmd, long when, int modifiers)
      • +
    +

    Here,
    +src = reference to the object that generated this event.
    +type = Determine type of event
    +cmd = command string
    +modifier = indicates modifier keys (ALT, CTRL, SHIFT); values are ALT_MASK, CTRL_MASK, SHIFT_MASK
    +when = specifies when the event occured

    +
      +
    • You can obtain the command name for the envoking ActionEvent object by using: + String getActionCommand()
      • +
    +

    For eg:
    +- When a button is pressed, an action event is generated that has a command name equal to the label on that button. +- Other Methods :

    +
    ```int getModifier()```  
+```long getWhen()```
+
    +

    KeyEvent Class

    +
      +
    • It is generated when:
        +
      • Keyboard input occurs
        • +
      +
      • +
    +

    Types of KeyEvent

    +
      +
    1. KEY_PRESSED - generated when key is pressed.
      2. +
    2. KEY_RELEASED - generated when key is released.
      3. +
    3. KEY_TYPED - generated when key is generated.
      4. +
    +

    Constants

    +

    VK_ALT, +VK_DOWN, +VK_LEFT, +VK_RIGHT, +VK_ENTER, +VK_ESCAPE, +VK_CONTROL, +VK_SHIFT,

    +

    Methods

    +
      +
    • char getKeyChar ();
      • +
    • int getKeyChar ();
      • +
    +

    Mouse Event

    +
      +
    • There are eight types of mouse events:
      • +
    • Eight integer constants are defined to determine types:
      • +
    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    MOUSE EVENTGenerate
    MOUSE_CLICKEDWhen user clicked the mouse
    MOUSE_DRESSEDThe user dragged the mouse
    MOUSE_ENTEREDThe mouse entered a component
    MOUSE_EXITEDThe mouse exited from a component
    MOUSE_MOVEDThe mouse moved
    MOUSE_PRESSEDThe mouse was pressed
    MOUSE_RELEASEDThe mouse was released
    MOUSE_WHEELThe mouse wheel was moved.
    +

    Methods:

    +
      +
    • int getX()
      • +
    • int getY()
      • +
    • Point getPoint() -> gives object that contain X, Y co-ordinates
      • +
    • int getClickCount()
      • +
    • boolean isPopupTrigger() -> tests if this events causes a pop-up menu to appear on this platform.
      • +
    • int getButton() -> returns a values that represents the button that caused the event.
      • +
    +

    Summary

    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    Event ClassDescription
    1. Action EventGenerated whe a button is pressed, a list item s double-clicked or menu item is selected.
    2. Key EventGenerated when input is received from the keyboard
    3. Mouse EventGenerated when the mouse is dragged, moved, clicked, pressed, or released, enter or exist component.
    4. Adjustment EventGenerated when a scroll bar is manipulated.
    5. Component EventGenerated when a component is hidden, move, resized or becomes visible.
    6. Container EventGenerated when a component is added to or remoevd from a component.
    7. Focus EventGenerated when a component is gains or loses keyboard focus.
    8. Input EventAbstract superclass for all component input event classes.
    9. Item EventGenerated when a checkbox or list item is clicked: also occurs when a choice selection is made or a checkable menu item is selected or deselected.
    10. MouseWheelEventGenerated when the mouse wheel is moved.
    11. TextEventGenerated when the value of a text area or text field is changed.
    11. WindowEventGenerated when a window is activated, closed, deactivated, opened or quitted.
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    + Copyright © 2020 Arjun Adhikari +
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    Sources of Events

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    1. Button,
      2. +
    2. CheckBox,
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    3. Choice,
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    7. TextField,
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    8. TextArea,
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    9. Window
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    User -> Event source -> Generates Event Objects -> Pass to EventListener(Handler) -> Handle and Return back to Source

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    FocusListener

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    • Defines 2 methods to recognize a component gain or loses keyboard focuses
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    Methods +1. void focusGained(FocusEvent fe) +2. void focusLost(FocusEvent fe)

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    ItemListener:

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    • Defines 1 method to recognize when the state of an item changes
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    Methods
    +1. void itemStateChange(ItemEvent ie)

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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/events/KeyListener/KeyListenerDemo.java b/events/KeyListener/KeyListenerDemo.java similarity index 100% rename from notes/events/KeyListener/KeyListenerDemo.java rename to events/KeyListener/KeyListenerDemo.java diff --git a/events/KeyListener/index.html b/events/KeyListener/index.html new file mode 100644 index 00000000..fda3c0ff --- /dev/null +++ b/events/KeyListener/index.html @@ -0,0 +1,1396 @@ + + + + + + + + + + + + + + + + + + Index - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Index

    + +

    KeyListener Interface

    +
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    • Define 3 methods to recognize when a key is pressed, released or typed.
      • +
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    Methods +1. void keyPressed(KeyEvent ke)
    +2. void keyReleased(KeyEvent ke)
    +3. void keyTyped(KeyEvent ke)

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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/events/MouseListener/MouseListenerDemo.java b/events/MouseListener/MouseListenerDemo.java similarity index 100% rename from notes/events/MouseListener/MouseListenerDemo.java rename to events/MouseListener/MouseListenerDemo.java diff --git a/events/MouseListener/index.html b/events/MouseListener/index.html new file mode 100644 index 00000000..ac2683f7 --- /dev/null +++ b/events/MouseListener/index.html @@ -0,0 +1,1398 @@ + + + + + + + + + + + + + + + + + + Index - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    MouseListener

    +
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    • Defines 5 methods to recognize when the mouse is clicked, enters a component, exits component, is pressed, is released.
      • +
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    Methods +1. void mouseClicked(MouseEvent me) +2. void mouseEntered(MouseEvent me) +3. void mouseExited(MouseEvent me) +4. void mousePressed(MouseEvent me) +5. void mouseReleased(MouseEvent me)

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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/events/MouseMotionListener/MouseMotionListenerDemo.java b/events/MouseMotionListener/MouseMotionListenerDemo.java similarity index 100% rename from notes/events/MouseMotionListener/MouseMotionListenerDemo.java rename to events/MouseMotionListener/MouseMotionListenerDemo.java diff --git a/events/MouseMotionListener/index.html b/events/MouseMotionListener/index.html new file mode 100644 index 00000000..b63faf85 --- /dev/null +++ b/events/MouseMotionListener/index.html @@ -0,0 +1,1380 @@ + + + + + + + + + + + + + + + + + + MouseMotionListener - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    MouseMotionListener

    +
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    • Defines 2 methods to recognize when mouse is dragged or moved.
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    Methods + 1. void mouseDraged(MouseEvent me) + 2. void mouseMoved(MouseEvent me)

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    MouseWheelListener

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    -Defines 1 method to recognize when the mouse wheel is moved.

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    Methods
    +1. void mouseWheelMoved(MouseWheelEvent mwe)

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    TextListener

    +
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    • Defines 1 method to recognize when a text value changes.
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    Methods
    + 1. void textValueChanged(TextEvent te)

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    WindowFocusListener

    +
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    • Defines 2 methods to recognize when a window gains ore loses input focus
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    Methods +1. void windowGainedFocus(WindowEvent we) +2. void windowLostFocus(WindowEvent we)

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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/events/WindowListener/WindowListenerDemo.java b/events/WindowListener/WindowListenerDemo.java similarity index 100% rename from notes/events/WindowListener/WindowListenerDemo.java rename to events/WindowListener/WindowListenerDemo.java diff --git a/events/WindowListener/index.html b/events/WindowListener/index.html new file mode 100644 index 00000000..a9278b2b --- /dev/null +++ b/events/WindowListener/index.html @@ -0,0 +1,1385 @@ + + + + + + + + + + + + + + + + + + WindowListener - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    WindowListener

    +
      +
    • Defines 7 methods to recognize when a window is activated, closed, deactivated,iconified, deiconified, opened or quit.
      • +
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    Methods +1. void windowActivated(WindowEvent we) +2. void windowClosed(WindowEvent we) +3. void windowClosing(WindowEvent we) +4. void windowDeactivated(WindowEvent we) +5. void windowIconified(WindowEvent we) +6. void windowDeiconified(WindowEvent we) +7. void windowOpened(WindowEvent we)

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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/events/index.html b/events/index.html new file mode 100644 index 00000000..5eb97fa4 --- /dev/null +++ b/events/index.html @@ -0,0 +1,1490 @@ + + + + + + + + + + + + + + + + + + Event Handling - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Event Handling

    +

    What is Event ?

    +
      +
    • Change in the state of an object is known as event. i.e. event describes the change i state of source.
      • +
    • Events are generated as a result of user interaction with GUI components. But they can also be generated explicitly.
      • +
    • For eg: Clicking on a button, moving the mouse, entering character through keyboard.
      • +
    +

    What is Event Listener ?

    +
      +
    • A Listener is an object that is notified when an event occurs.
      • +
    • a.k.a Event Handler. (also known as)
      • +
    • Listener is responsible for generating response to an event.
      • +
    • It has two major requirements:
        +
      1. First, it must have been registered with one or more source to receive notifications about specific types of events.
        2. +
      2. It must implement methods to receive and process these notifications.
        3. +
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    +

    What is Event Source ?

    +
      +
    • A source is an object that generates an event. This occurs when the internal state of the object chages in some way.
      • +
    • Source may generate more than one tyoe of event.
      • +
    • A source must register listeners in order for the listeners to recieve notifications about specific type of event.
      • +
    • Each type of event has its own registration method. Here is the general form.
      +public void addTypeListener (TypeListener el) // el = event listener
      + For eg:
      +addKeyListener()
      + Here Type is the name of the event and el is the reference to the event listener.
      • +
    • When an event occurs, all registered listeners are notified and recieve a copy of event object. This is known as multicasting the event.
      • +
    • Some sources may allow only one listener to register. When such an event occurs, the registered listener is notified. This is known as unicasting the event.
      • +
    • A source must also provide method that allows a listener to unregister an interest in a specific type of event. The general form:
      +public void removeTypeListener(TypeListener el)
      • +
    +

    What is Event Handling ?

    +
      +
    • It is the mechanism that controls the event and decides what should happen if an event occurs.
      • +
    • Java Uses Event Delegation Model.
      • +
    +

    Event Delegation Model

    +

    Figure For Event Delegation Model

    +
      +
    • +

      Concept:

      +
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    • +

      A source generates an event and sends it to one or more listeners.

      +
      • +
    • +

      The listener simply waits until it receives an event. Once an event is recieved, the listener processes the event and then returns.

      +
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    • +

      Advantages

      +
        +
      • The advantages of this design is that the application logic that processes events is clearly separated from the UI logic that generates those events.
        • +
      +
      • +
    +

    Using the Delegation Event Model

    +

    Steps +1. Implement the appropriate interface in the listener so that it can receive the type of event desired. +2. Implement code to register and unregister (if necessary) the listerner as a recipient for the event notifications.

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    Difference between Abstract Class and Interface

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    Abstract ClassInterface
    An abstract class is a class that is declared abstract —it may or may not include abstract methods. Abstract classes cannot be instantiated, but they can be subclassed. However, if it does not, then the subclass must also be declared abstract .A Java interface is a bit like a class, except a Java interface can only contain method signatures and fields. An Java interface cannot contain an implementation of the methods, only the signature (name, parameters and exceptions) of the method. You can use interfaces in Java as a way to achieve polymorphism.
    If we are talking about implementation, but not completely; we use abstract class.If we don't know about the implementation, just have requirements, go with interface.
    We can take abstract and concrete class.Method is public and abstract. Interface is 100% abstract class.
    No restrictions on abstract class access modifiers.We can't declare private and protected.
    Variables present inside abstract class needn't to be public, static and final.Every interface variable is public, final and static whether we are declaring it or not.
    No restrictions for initialization of variables.Initialization of variable is mandatory during declaration; else compile-time error.
    No restrictions on declaring static blocks (functions). We can declare instances too.Can't declare instance and static blocks; else compile-time error.
    It can take instance variable. if we want we can have constructors too.No constructor which sole purpose is to initialize the variable.
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/exams/examAnswers/programmingAnswers/chapterFour/Eight.java b/exams/examAnswers/programmingAnswers/chapterFour/Eight.java similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterFour/Eight.java rename to exams/examAnswers/programmingAnswers/chapterFour/Eight.java diff --git a/notes/exams/examAnswers/programmingAnswers/chapterFour/abc.txt b/exams/examAnswers/programmingAnswers/chapterFour/abc.txt similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterFour/abc.txt rename to exams/examAnswers/programmingAnswers/chapterFour/abc.txt diff --git a/notes/exams/examAnswers/programmingAnswers/chapterOne/Five.java b/exams/examAnswers/programmingAnswers/chapterOne/Five.java similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterOne/Five.java rename to exams/examAnswers/programmingAnswers/chapterOne/Five.java diff --git a/notes/exams/examAnswers/programmingAnswers/chapterOne/Four.java b/exams/examAnswers/programmingAnswers/chapterOne/Four.java similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterOne/Four.java rename to exams/examAnswers/programmingAnswers/chapterOne/Four.java diff --git a/notes/exams/examAnswers/programmingAnswers/chapterOne/Two.java b/exams/examAnswers/programmingAnswers/chapterOne/Two.java similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterOne/Two.java rename to exams/examAnswers/programmingAnswers/chapterOne/Two.java diff --git a/notes/exams/examAnswers/programmingAnswers/chapterTwo/Eight.java b/exams/examAnswers/programmingAnswers/chapterTwo/Eight.java similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterTwo/Eight.java rename to exams/examAnswers/programmingAnswers/chapterTwo/Eight.java diff --git a/notes/exams/examAnswers/programmingAnswers/chapterTwo/Five.java b/exams/examAnswers/programmingAnswers/chapterTwo/Five.java similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterTwo/Five.java rename to exams/examAnswers/programmingAnswers/chapterTwo/Five.java diff --git a/notes/exams/examAnswers/programmingAnswers/chapterTwo/Four.java b/exams/examAnswers/programmingAnswers/chapterTwo/Four.java similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterTwo/Four.java rename to exams/examAnswers/programmingAnswers/chapterTwo/Four.java diff --git a/notes/exams/examAnswers/programmingAnswers/chapterTwo/One.java b/exams/examAnswers/programmingAnswers/chapterTwo/One.java similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterTwo/One.java rename to exams/examAnswers/programmingAnswers/chapterTwo/One.java diff --git a/notes/exams/examAnswers/programmingAnswers/chapterTwo/Seven.java b/exams/examAnswers/programmingAnswers/chapterTwo/Seven.java similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterTwo/Seven.java rename to exams/examAnswers/programmingAnswers/chapterTwo/Seven.java diff --git a/notes/exams/examAnswers/programmingAnswers/chapterTwo/Six.java b/exams/examAnswers/programmingAnswers/chapterTwo/Six.java similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterTwo/Six.java rename to exams/examAnswers/programmingAnswers/chapterTwo/Six.java diff --git a/notes/exams/examAnswers/programmingAnswers/chapterTwo/Three.java b/exams/examAnswers/programmingAnswers/chapterTwo/Three.java similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterTwo/Three.java rename to exams/examAnswers/programmingAnswers/chapterTwo/Three.java diff --git a/notes/exams/examAnswers/programmingAnswers/chapterTwo/Two.java b/exams/examAnswers/programmingAnswers/chapterTwo/Two.java similarity index 100% rename from notes/exams/examAnswers/programmingAnswers/chapterTwo/Two.java rename to exams/examAnswers/programmingAnswers/chapterTwo/Two.java diff --git a/exams/examQuestions/ProgrammingQuestions/index.html b/exams/examQuestions/ProgrammingQuestions/index.html new file mode 100644 index 00000000..8a01128a --- /dev/null +++ b/exams/examQuestions/ProgrammingQuestions/index.html @@ -0,0 +1,1985 @@ + + + + + + + + + + + + + + + + + + + + Programming Questions - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Programming

    + +
    +

    ✅ in questions denotes the no of question appearence. More the tick in question, possess high importance from examination point of view.

    +
    +

    Chapter 1

    +
      +
    1. Write a program to sort any five names in alphabetical order.
      2. +
    2. Write a program to print “Hello Nepal” in console. ✅ +
      class Two{
+    public static void main(String[] args) {
+        System.out.println("Hello Nepal");
+    }
+}
+
      3. +
    3. Write a program to show usage of various data types in Java.
      4. +
    4. Write a function that takes an array of integers as an argument and returns sum of even numbers in that array. +
      class Four {
+    public static void main(String[] args) {
+        int[] array = { 1, 2, 3, 4, 5 };
+        int sum = sumArray(array);
+        System.out.println("Sum : "+sum);
+    }
+
+    public static int sumArray(int[] array){
+        int sum = 0;
+        for(int num:array){
+            sum += num;
+        }
+        return sum;
+    }
+}
+
      5. +
    5. Write a program to generate the following triangle using for loop.
      +
      1  
+0  1  
+1  0  1  
+0  1  0  1
+
      +
      class Five{
+    public static void main(String[] args){
+        for(int i = 1; i <= 4; i++){ // First we are running loop from 1 to 4.
+            for(int j = 0; j < i; j++){ // Then we are running loop from 0 until i.
+                System.out.print((j+i)%2+" "); // Sum of i and j modulus of 2 equals the alternate of 1 and 0. 
+            }
+            System.out.println();
+        }
+    }
+}
+
+// Practiced Algorithms
+
+// System.out.print((int)(temp+Math.pow(-1,j))+" ");
+// (int)(+Math.pow(-1,))
+// System.out.print((j+1)%2+" ");
+
      6. +
    +

    Chapter 2

    +
      +
    1. Write a program which has two classes A and B, where A should act as Parent class and B should inherit from A. +
      class A{
+    void display(){
+        System.out.println("This is from class A");
+    }
+}
+class B extends A{
+    void display(){
+        System.out.println("This is from class B");
+    }
+}
+
+class Demo{
+    public static void main(String[] args){
+        A aObject = new A();
+        B bObject = new B();
+
+        aObject.display();
+        bObject.display();
+        // bObject.super.display();
+    }
+}
+
      2. +
    2. Create a class Employee with id, name, post and salary. Create parameterized constructor to initialize the instance variables. Override the toString( ) method to display the employee details.
      +
      class Employee {
+    private int id;
+    private String name;
+    private String post;
+    private double salary;
+
+    Employee(int id, String name, String post, double salary) {
+        this.id = id;
+        this.name = name;
+        this.post = post;
+        this.salary = salary;
+    }
+
+    // This overrides the toString() method.
+    // Returns a string representation of the object. In general, the toString
+    // method returns a string that "textually represents" this object. The result
+    // should be a concise but informative representation that is easy for a person
+    // to read. It is recommended that all subclasses override this method.
+    public String toString() {
+        return "ID : " + this.id + "\nName : " + this.name + "\nPost : " + this.post + "\nSalary : " + this.salary;
+    }
+}
+
+class Two {
+    public static void main(String[] args) {
+        Employee employeeOne = new Employee(12, "Arjun", "Manager", 12345.90);
+        String employee = employeeOne.toString();
+        System.out.println(employee);
+    }
+}
+
+// System.out.println("ID : "+id);
+// System.out.println("Name : "+name);
+// System.out.println("Post : "+post);
+// System.out.println("Salary : "+salary);
+
      3. +
    3. Create a class Parts with instance variable sno, name, model, price, constructors to initialize the object, a method to calculate commission which calculates 10% of the price of each item and a method to display the details. Derive a new class PartsVAT with a method to calculate 13% VAT of the item. Write necessary constructors to that use the super constructors. Test the classes using a main method in third classes. +
      class Parts {
+    private int sno;
+    private String name;
+    private String model;
+    private double price;
+
+    Parts(int sno, String name, String model, double price) {
+        this.sno = sno;
+        this.name = name;
+        this.model = model;
+        this.price = price;
+    }
+
+    public int getSno() {
+        return sno;
+    }
+    public String getName() {
+        return name;
+    }
+    public double getPrice() {
+        return price;
+    }
+    public String getModel() {
+        return model;
+    }
+
+    public double tax() {
+        return 0.1 * this.price;
+    }
+
+    public void display() {
+        System.out.println("\nS.N. : " + this.getSno() + "\nName : " + this.getName() + "\nModel : " + this.getModel()
+                + "\nPirce : " + this.getPrice() + "\nTax : " + this.tax());
+    }
+}
+
+class PartsVAT extends Parts {
+    PartsVAT(int sno, String name, String model, double price) {
+        super(sno, name, model, price);
+    }
+
+    public double tax() {
+        return 0.13 * getPrice();
+    }
+
+    public void display() {
+        System.out.println("\nS.N. : " + this.getSno() + "\nName : " + this.getName() + "\nModel : " + this.getModel()
+                + "\nPirce : " + this.getPrice() + "\nTax : " + this.tax());
+    }
+}
+
+class Three{
+    public static void main(String[] args){
+        PartsVAT obj = new PartsVAT(12, "Tesla", "Y", 400000.00d);
+        obj.display();
+
+        Parts objOne = new Parts(11, "Audi", "R8", 650000.00d);
+        objOne.display();
+    }   
+}
+
      4. +
    4. Write an interface Exam with a method pass (int pass) that returns a Boolean. Write another interface Classify with a method division (int average) which returns a string. Write class Result which implements both Exams and Classify. The pass method should return true if score is greater than 50 otherwise false. The division method must return “First” when average is more than 80, “Second when average is more than 50 otherwise ”No Divison”.
      +
      interface Exam {
+    public boolean pass(int average);
+}
+
+interface Classify {
+    public String division(int average);
+}
+
+public class Result implements Exam, Classify {
+    public boolean pass(int average) { // Interface implement garda method ko agadi jahile pani public rakhne natra "attempting to assign weaker access privileges; was public" error message aaucha.
+        if (average > 50) {
+            return true;
+        } else {
+            return false;
+        }
+    }
+
+    public String division(int average) {
+        if (average > 80) {
+            return "First Division";
+        } else if (average > 50) {
+            return "Second Division";
+        } else {
+            return "No Division";
+        }
+    }
+}
+
+class ResultDemo {
+    public static void main(String[] args) {
+        Result resultObj = new Result();
+        int average = 45;
+        boolean pass = resultObj.pass(average);
+        String div = resultObj.division(average);
+        System.out.println("Pass : " + pass + "\nDivision : " + div);
+    }
+}
+
      5. +
    5. Write a Java program to demonstrate runtime polymorphism via method overriding. Write the following classes: Animal as a base class, Cat (derived class of Animal) and Cow (derived class of Animal). Write a method eat( ) in Animal class and override that method in the derived classes.
      +
      abstract class Animal{ // Define a abstract class.
+    abstract void eat(); // Define a abstract method.
+}
+
+class Cat extends Animal{
+    void eat(){ // Override it.
+        System.out.println("Cat is eating.");
+    }
+}
+
+class Cow extends Animal{
+    void eat(){ // Override it.
+        System.out.println("Animal is eating.");
+    }
+}
+
+class Five{
+    public static void main(String[] args){
+        Animal referrer = new Cat(); // Create referrer object of Parent abstract class.
+        referrer.eat();
+        referrer = new Cow();
+        referrer.eat();
+    }
+}
+
      6. +
    6. Implement an abstract class named Person and two subclasses named Student and Employee in Java. A person has a name, address, phone number and e-mail address. A student has a class status (freshman, sophomore, junior or senior). Define the status as a constant. An employee has an office, salary and date-hired. Implement the above classes in Java. Provide Constructors for classes to initialize private variables. Override the toString( ) methods in each class to display class name and the person’s name. Write an application to create objects of type Student and Employee and print the person’s name and the class name of the objects. +
      abstract class Person 
+{
+    String name, address, phoneNumber, email;
+    Person(String name, String address, String phoneNumber, String email) 
+    {
+        this.name = name;
+        this.address = address;
+        this.phoneNumber = phoneNumber;
+        this.email = email;
+    }
+    abstract public String toString();
+}
+
+
+class Student extends Person
+{
+    final String status; // Provide status as (freshman, sophomore, junior or senior.)
+    Student(String name, String address, String phoneNumber, String email, String status) 
+    {
+        super(name, address, phoneNumber, email);
+        this.status = status;
+    }
+    @Override
+    public String toString() 
+    {
+        return "Class Name: " + this.getClass().getName() + "\nName: " + this.name;
+    }
+}
+
+class Employee extends Person 
+{
+    String office, salary, dateHired;
+
+    Employee(String name, String address, String phoneNumber, String email, String office, String salary, String dateHired) 
+    {
+        super(name, address, phoneNumber, email);
+        this.office = office;
+        this.salary = salary;
+        this.dateHired = dateHired;
+    }
+    @Override
+    public String toString() 
+    {
+        return "Class Name: " + this.getClass().getName() + "\nName: " + this.name;
+    }
+}
+
+public class Six
+{
+    public static void main(String[] args)
+    {
+        Student studentOne = new Student("Arjun Adhikari", "Pokhara", "9800011111", "mailarjunadhikari@gmail.com", "Senior");
+        Employee employeeOne = new Employee("Anil Adhikari", "Pokhara", "982211111", "mailaniladhikari@gmail.com", "Human Resources", "234454.90", "1 January 2019");
+        String display = studentOne.toString();
+        System.out.println(display);
+        display = employeeOne.toString();
+        System.out.println(display);
+    }
+}
+
      7. +
    7. Implement an abstract class named Book and two other subclasses named Novel and Magazine. A Book has a name, author, total page and publisher. Book has an abstract method called getBookType( ). Novel and Magazine have field to determine their type. Implement the above classes in Java. Provide constructors for classes to private variables.
      +
      abstract class Book {
+    private String name;
+    private String author;
+    private int totalPage;
+    private String publisher;
+
+    Book(String name, String author, int totalPage, String publisher) {
+        this.name = name;
+        this.author = author;
+        this.totalPage = totalPage;
+        this.publisher = publisher;
+    }
+    public String getName() {
+        return name;
+    }
+    public String getAuthor() {
+        return author;
+    }
+    public int getTotalPage() {
+        return totalPage;
+    }
+    public String getPublisher() {
+        return publisher;
+    }
+    abstract void getBookType(); // Abstract Method
+}
+
+class Novel extends Book {
+
+    Novel(String name, String author, int totalPage, String publisher) {
+        super(name, author, totalPage, publisher);
+    }
+
+
+
+    void getBookType() {
+        System.out.println("Book Type : "+this.getClass());
+        System.out.println("Name : " + getName());
+        System.out.println("Author : " + getAuthor());
+        System.out.println("Total Page : " + getTotalPage());
+        System.out.println("Publisher: " + getPublisher());
+    }
+}
+
+class Magazine extends Book {
+
+    Magazine(String name, String author, int totalPage, String publisher) {
+        super(name, author, totalPage, publisher);
+    }
+
+    void getBookType() {
+        System.out.println("Book Type : " + this.getClass().getName()); // This returns the class type
+        System.out.println("Name : " + getName());
+        System.out.println("Author : " + getAuthor());
+        System.out.println("Total Page : " + getTotalPage());
+        System.out.println("Publisher: " + getPublisher());
+    }
+}
+
+class Seven{
+    public static void main(String[] args){
+        Magazine magazineOne = new Magazine("TIME", "Time Editorial", 61, "Time Publishers");
+        magazineOne.getBookType();
+    }
+}
+
      8. +
    8. Make a class Human with a name and age. Make a class Employee inherit from Human. Add instance variable salary of double. Supply a method showData( ) that prints the Employee’s name, age, and salary. Make a class Manager inherit from Employee. Supply appropriate showData( ) methods for all classes. Provide a test program that tests these classes and methods.
      +
      class Human {
+    private String name;
+    private int age;
+
+    Human(String name, int age) {
+        this.name = name;
+        this.age = age;
+    }
+
+    public void display() {
+        System.out.println("Name : " + name);
+        System.out.println("Age : " + age);
+    }
+}
+
+class Employee extends Human {
+    private double salary;
+
+    Employee(String name, int age, double salary){
+        super(name,age);
+        this.salary = salary;
+    }
+
+    public void display() {
+        super.display();
+        System.out.println("Salary : " + salary);
+    }
+}
+
+class Manager extends Employee {
+
+    Manager(String name, int age, double salary){
+        super(name, age, salary);
+    }
+
+    public void display() {
+        super.display();
+    }
+}
+
+class Eight {
+    public static void main(String[] args) {
+        Human humanOne = new Human("Arjun",19);
+        humanOne.display();
+
+        Employee employeeOne = new Employee("Hari", 45, 21312.90);
+        employeeOne.display();
+
+        Manager managerOne = new Manager("Hari Nath", 45, 21312.90);
+        managerOne.display();
+
+
+    }
+}
+
      9. +
    9. Create a class MyClass in a package MyPack. Import newly created class MyClass form IpmClass.
      10. +
    +

    Chapter 3

    +
      +
    1. Write a program to input an integer from keyboard and print it on the console. Fire an exception if the input is other than integer using try and catch.
      2. +
    2. Write a program to create your own Arithmetic Exception.
      3. +
    +

    Chapter 4

    +
      +
    1. Write a program in Java to read a line of string in console mode and display same line as output. ✅ ✅ ✅ ✅
      2. +
    2. Write a Java program to access an existing file in to your current directory.
      3. +
    3. Write a program which stores and appends any String value given from keyword into the C:\store.txt.
      4. +
    4. Write a program to read a text file and display the content on screen.
      5. +
    5. Write a program to read two integer numbers from the console using the Input Stream. Calculate their sum display in console.
      6. +
    6. Write a program to store objects of a class Student into a file “student.dat” also reads the objects from same file and display the file state of objects on the screen. Handle possible exceptions.
      7. +
    7. Write a program using any stream class for writing text to a file.
      8. +
    8. Write a program to read content from file “abc.txt” and store it in “xyz.txt”. +
      /* Write a program to read content from file abc.txt and store it in xyz.txt. */
+
+import java.io.*;
+
+class DataTransfer
+{
+    public static void main(String[] args)
+    {
+        try
+        {
+            FileReader filereader = new FileReader("abc.txt");
+            FileWriter filewriter = new FileWriter("xyz.txt");
+
+            int i = filereader.read();
+            while(i != -1)
+            {
+                System.out.print((char)i);
+                filewriter.write(i); // Appends every time
+                i = filereader.read();
+            }
+            filereader.close();
+            filewriter.flush();
+            filewriter.close();
+        }
+        catch(IOException err){
+            err.printStackTrace();
+        }
+    }
+}
+
      9. +
    9. Write a program to write “Hello World” in a file abc.txt.
      10. +
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/exams/examQuestions/index.html b/exams/examQuestions/index.html new file mode 100644 index 00000000..9ed9628d --- /dev/null +++ b/exams/examQuestions/index.html @@ -0,0 +1,1650 @@ + + + + + + + + + + + + + + + + + + + + General Exam Questions - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    General

    + +
    +

    ✅ in questions denotes the no of question appearence. More the tick in question, possess high importance from examination point of view.

    +
    +

    Chapter 1

    +
      +
    1. Define Java.
      2. +
    2. Write about the historical background of JPL. ✅ ✅ ✅
      3. +
    3. Why and where we use Java Programming Language? ✅
      4. +
    4. What are the benefits of using Java?
      5. +
    5. How Java is more secure than other programming languages? Explain.
      6. +
    6. “Java is Interpreted, High Performance, Dynamic, Secure, Robust”. Explain the statement.
      7. +
    7. Explain Java Platform with their inter co-related technologies. Draw a sample block diagram to show compile time environment in Java programming.
      8. +
    8. List down the different features of Java. ✅ ✅
      9. +
    9. Explain how Java supports multiple platforms, platform independency. ✅ ✅ ✅
      10. +
    10. How do you differentiate JDK and JRE? What is the significance of having multiple data types in programming language?
      11. +
    11. What do you mean by Java System Overview? Explain why Java program are known as portable and architecture neutral.
      12. +
    12. What is the motive behind JVM? Explain what you mean by JRE.
      13. +
    13. Is JVM is machine dependent? Explain the use of JVM. How JVM makes machine dependent.
      14. +
    14. What do you mean by architectural – neutral? What are wrapper classes?
      15. +
    15. What are the uses of Java Virtual Machine in JPL? ✅ ✅ ✅Explain the two types of class loader in JPL.
      16. +
    16. Explain why Java programs are compiled with bytecodes? ✅ ✅
      17. +
    17. What is a class file? Differentiate between assignment and initialization with suitable example.
      18. +
    18. Explain all facilities the Java Programming has over C++. Why it is more popular than C++? ✅ ✅ ✅ - Portability, platform independence (JVM), Java runs on any platform without recompiling.
      19. +
    19. Write a program to sort any five names in alphabetical order.
      20. +
    20. Write a program to print “Hello Nepal” in console. ✅
      21. +
    21. Write a program to show usage of various data types in Java.
      22. +
    22. Write a function that takes an array of integers as an argument and returns sum of even numbers in that array.
      23. +
    23. Write a program to generate the following triangle using for loop.
      +
      1  
+0  1  
+1  0  1  
+0  1  0  1
+
      24. +
    +

    Chapter 2

    +
      +
    1. How do you implement the concept of OOP in Java? Explain with an example.
      2. +
    2. How the concept of reusability can be useful in OOP? Explain with example, in terms of JPL. ✅✅
      3. +
    3. How does Java support reusability? Provide examples.
      4. +
    4. What is a class? ✅ How does it accomplish data hiding? Explain with suitable example. What advantages do we have when inheriting from a class whose attributes are protected rather than private?
      5. +
    5. How are class declared in Java? Illustrate with example.
      6. +
    6. Show the differences between user defined classes and system defined class. ✅
      7. +
    7. Explain how we can re-use the user defined classes.
      8. +
    8. What is constructor, Explain with example?
      9. +
    9. State the difference between inner and outer class with the help of suitable example. ✅
      10. +
    10. In what scenario inner use of inner class is preferred? Explain the static and non-static inner classes with example.
      11. +
    11. Mention the scope of all modifiers (private, default, protected and public). Write suitable program to illustrate the concept.
      12. +
    12. Write a simple program to show the difference in using and not using static keyword in defining methods.
      13. +
    13. Explain the key words “public, static, void, private, protected” with reference to JPL. ✅
      14. +
    14. Discuss about the concept of instance variable hiding in Java. Illustrate with a code example.
      15. +
    15. Can you override private or static method in Java? Explain with an example.
      16. +
    16. How inner class helps programmer? Write a short program snippet to show anonymous inner classes.
      17. +
    17. Difference between class method and instance method with suitable example.
      18. +
    18. Explain the difference between method overloading and method overriding? ✅ ✅✅ ✅ ✅
      19. +
    19. Write a program to show method overriding.
      20. +
    20. Define polymorphism. How should we implement polymorphism in Java? Explain with example.
      21. +
    21. Write a java class to demonstrate method overloading. Define a sum( ) method which takes two parameters and displays the sum. The sum( ) method should be overloaded to accept a combination of integer and double type number. ✅
      22. +
    22. Explain the uses of super and this keyword with suitable examples.
      23. +
    23. Define inheritance.✅ ✅ ✅ ✅ ✅ Explain different types of inheritance. ✅ How does inheritance reduce the program development time? Explain with example.
      24. +
    24. Explain the strategy for designing Inheritance. ✅ Describe how we can prevent inheritance.
      25. +
    25. Explain one method and multiple implementation approach of inheritance with example.
      26. +
    26. Write a program deriving two child classes from a base class using Java.
      27. +
    27. What is the use of abstract keyword? Explain with a suitable program.
      28. +
    28. How is abstract class different from interfaces? ✅ ✅ ✅ ✅
      29. +
    29. What is the use of abstract classes in programming?
      30. +
    30. What is difference between Interface and a class? Explain with an example.
      31. +
    31. What is an interface? ✅ ✅ ✅ ✅ ✅ ✅ Explain with a suitable example. ✅ ✅
      32. +
    32. What are the significant uses of interface? Explain how it is implemented in Java. ✅
      33. +
    33. How do you design and use interface? ✅ ✅
      34. +
    34. How Java supports Multiple Inheritance? Write a program in Java that shows the concept of Multiple Inheritance. ✅
      35. +
    35. Why is multiple inheritance not supported in Java. Provide a simple code example to support your answer.
      36. +
    36. What is runtime polymorphism? Explain how it can be achieved in Java.
      37. +
    37. What is the difference between static method and non-static method? Can a non-static method be invoked from a static method? Explain with example?
      38. +
    38. Write a program which has two classes A and B, where A should act as Parent class and B should inherit from A.
      39. +
    39. Create a class Employee with id, name, post and salary. Create parameterized constructor to initialize the instance variables. Override the toString( ) method to display the employee details.
      40. +
    40. Create a class Parts with instance variable sno, name, model, price, constructors to initialize the object, a method to calculate commission which calculates 10% of the price of each item and a method to display the details. Derive a new class PartsVAT with a method to calculate 13% VAT of the item. Write necessary constructors to that use the super constructors. Test the classes using a main method in third classes.
      41. +
    41. Write an interface Exam with a method pass (int pass) that returns a Boolean. Write another interface Classify with a method division (int average) which returns a string. Write class Result which implements both Exams and Classify. The pass method should return true if score is greater than 50 otherwise false. The division method must return “First” when average is more than 80, “Second when average is more than 50 otherwise ”No Divison”.
      42. +
    42. Write a Java program to demonstrate runtime polymorphism via method overriding. Write the following classes: Animal as a base class, Cat (derived class of Animal) and Cow (derived class of Animal). Write a method eat( ) in Animal class and override that method in the derived classes.
      43. +
    43. Implement an abstract class named Person and two subclasses named Student and Employee in Java. A person has a name, address, phone number and e-mail address. A student has a class status (freshman, sophomore, junior or senior). Define the status as a constant. An employee has an office, salary and date-hired. Implement the above classes in Java. Provide Constructors for classes to initialize private variables. Override the toString( ) methods in each class to display class name and the person’s name. Write an application to create objects of type Student and Employee and print the person’s name and the class name of the objects.
      44. +
    44. Implement an abstract class named Book and two other subclasses named Novel and Magazine. A Book has a name, author, total page and publisher. Book has an abstract method called getBookType( ). Novel and Magazine have field to determine their type. Implement the above classes in Java. Provide constructors for classes to private variables.
      45. +
    45. Make a class Human with a name and age. Make a class Employee inherit from Human. Add instance variable salary of double. Supply a method showData( ) that prints the Employee’s name, age, and salary. Make a class Manager inherit from Employee. Supply appropriate showData( ) methods for all classes. Provide a test program that tests these classes and methods.
      46. +
    46. Define packages. ✅ ✅
      47. +
    47. Explain the significance of using package in Java. Differentiate interface with abstract classes.
      48. +
    48. Write a package of three classes where each class must have at least one function. Also, state the steps to execute the package. ✅ ✅Add illustration.
      49. +
    49. How packages are created and used in Java? Explain with example. ✅
      50. +
    50. What is user defined package? Illustrate the process of defining and using define package with suitable example.
      51. +
    51. Difference between package and interface in Java. Provide examples for each of them.
      52. +
    52. Create a class MyClass in a package MyPack. Import newly created class MyClass form IpmClass.
      53. +
    +

    Chapter 3

    +
      +
    1. What are exceptions? ✅ ✅ ✅
      2. +
    2. What do you understand by exceptional handling? Describe about try-catch-finally construct with an example. ✅ ✅ ✅ ✅ ✅
      3. +
    3. What’s the use of try and catch block in Java? Write down all the exceptions that occur when we are dealing with array.
      4. +
    4. Define Exceptional Handling with the help of a suitable program. ✅ ✅
      5. +
    5. Explain the different types of Exceptional Class. ✅
      6. +
    6. What is usage of exception handling? Define with example.
      7. +
    7. What is exception handling? Is an error similar to exception? ✅ ✅
      8. +
    8. Explain how an exception is handled?✅
      9. +
    9. What are the major exception classes used in Java? ✅
      10. +
    10. How does an exception occur in Java?
      11. +
    11. Explain the user defined Exceptions with suitable Java code.
      12. +
    12. Differentiate between checked and unchecked exceptions with relevant examples.
      13. +
    13. How you can create your own exceptions in Java? Explain with Program.
      14. +
    14. Write a program to input an integer from keyboard and print it on the console. Fire an exception if the input is other than integer using try and catch blocks.
      15. +
    15. Write a program to create your own Arithmetic Exception.
      16. +
    +

    Chapter 4

    +
      +
    1. Write a program in Java to read a line of string in console mode and display same line as output. ✅ ✅ ✅ ✅
      2. +
    2. Write a Java program to access an existing file in to your current directory.
      3. +
    3. Write a program which stores and appends any String value given from keyword into the C:\store.txt.
      4. +
    4. Write a program to read a text file and display the content on screen.
      5. +
    5. Write a program to read two integer numbers from the console using the Input Stream. Calculate their sum display in console.
      6. +
    6. Write a program to store objects of a class Student into a file “student.dat” also reads the objects from same file and display the file state of objects on the screen. Handle possible exceptions.
      7. +
    7. Explain various stream classes available in Java. Write a program using any stream class for writing text to a file.
      8. +
    8. Write a program to read content from file “abc.txt” and store it in “xyz.txt”.
      9. +
    9. Write a program to write “Hello World” in a file abc.txt.
      10. +
    +

    Short Notes

    +
      +
    1. History of Java
      2. +
    2. Benefits of Java
      3. +
    3. Java Virtual Machine (JVM) ✅ & Byte Code
      4. +
    4. Data Types, Variables and class ✅ ✅
      5. +
    5. Assignment vs. Initialization
      6. +
    6. Arrays
      +i. Single Dimensional
      +ii. Multi-Dimensional
      7. +
    7. Type casting ✅
      8. +
    8. Inner Class ✅ ✅ ✅ ✅ ✅ ✅
      9. +
    9. Final Keyword
      10. +
    10. Access mechanism in Java ✅ ✅ ✅
      11. +
    11. Static members ✅
      12. +
    12. Static member variable ✅
      13. +
    13. Abstract Methods and Classes
      14. +
    14. Runtime Polymorphism in Java
      15. +
    15. Wrapper Classes
      16. +
    16. Inheritance
      17. +
    17. Packages
      18. +
    18. Dynamic Dispatching
      19. +
    19. Casting Abstract Classes
      20. +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/exception/ChainedException/ChainExceptionDemo.java b/exception/ChainedException/ChainExceptionDemo.java similarity index 100% rename from notes/exception/ChainedException/ChainExceptionDemo.java rename to exception/ChainedException/ChainExceptionDemo.java diff --git a/exception/ChainedException/index.html b/exception/ChainedException/index.html new file mode 100644 index 00000000..a6adc678 --- /dev/null +++ b/exception/ChainedException/index.html @@ -0,0 +1,1389 @@ + + + + + + + + + + + + + + + + + + Chained Exceptions - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Chained Exceptions

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    • allow to associate another exception with an exception.
      • +
    +
    +

    To allow chained Exceptions, two constructors and two methods are added to Throwable.

    +
    +
      +
    1. Throwable (Throwable cause Exception)
      2. +
    2. Throwable (String message, Throwable cause Exception)
      3. +
    +

    Two methods used are:

    +
      +
    1. Throwable getCause()
      2. +
    2. Throwable initCause (Throwable causeException)
      3. +
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    + Copyright © 2020 Arjun Adhikari +
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    Nested Try Statement

    +
      +
    • The try statement can be nested i.e , a try can be inside the block of another try.
      • +
    • Each time a try statement is entered, the contact of that exception is pushed in the track.
      • +
    • If an inner try statement doesn't have a catch handler for particular exception, the stack is unwound and the next try statement catch handler are inspected for a match. This continues until one of the catch statement succeeds or until all of the nested try statments are exhausted. If no catch statements matches then the Java Runtime System will handle the exception.
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/exception/builtIn/ExceptionDemo.java b/exception/builtIn/ExceptionDemo.java similarity index 100% rename from notes/exception/builtIn/ExceptionDemo.java rename to exception/builtIn/ExceptionDemo.java diff --git a/notes/exception/builtIn/MyException.java b/exception/builtIn/MyException.java similarity index 100% rename from notes/exception/builtIn/MyException.java rename to exception/builtIn/MyException.java diff --git a/exception/builtIn/index.html b/exception/builtIn/index.html new file mode 100644 index 00000000..9a6be945 --- /dev/null +++ b/exception/builtIn/index.html @@ -0,0 +1,1391 @@ + + + + + + + + + + + + + + + + + + Index - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Java's Built-in Exceptions

    +

    java.lang

    +
      +
    • +

      Most general of these exceptions are subclasses of the standard type RuntimeException.

      +
      • +
    • +

      Checked Exception

      +
      • +
    • That must be included in a method's throw list if that method can generate one of these Exception and does not handle itself.
      • +
    +

    eg: ClassNotFOundException, IllegalAccessException

    +
      +
    1. Unchecked Exception
      2. +
    2. These exceptio need not be included in any method's throw list.
      3. +
    3. Compiler doesn't check to see if a method handles or throw these exception. +eg: ArithmeticException, ArrayIndexOutofBoundsException
      4. +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/exception/finally/FinallyDemo.java b/exception/finally/FinallyDemo.java similarity index 100% rename from notes/exception/finally/FinallyDemo.java rename to exception/finally/FinallyDemo.java diff --git a/notes/exception/finally/FinallyDemoOne.java b/exception/finally/FinallyDemoOne.java similarity index 100% rename from notes/exception/finally/FinallyDemoOne.java rename to exception/finally/FinallyDemoOne.java diff --git a/exception/finally/index.html b/exception/finally/index.html new file mode 100644 index 00000000..756c117d --- /dev/null +++ b/exception/finally/index.html @@ -0,0 +1,1381 @@ + + + + + + + + + + + + + + + + + + Finally - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Finally

    +

    When exceptions are thrown, execution in a method takes a rather abrupt, nonlinear path that alters the normal flow through the method. Depending upon how the method is coded, it is even possible for an exception to cause the method to return prematurely. This could be a problem in some methods.

    +

    The finally keyword is designed to address this kind of problems. finally creates a block of code that will be executed after a try catch block has completed and before the code following the try catch block. The finally block will be executed whether or not an exception is thrown.

    +

    If an exception is thrown the finally block will execute even if no catch statement matches the exception. This can be useful for closing file handles and freeing up any other resources. finally block is optional.

    +
    +

    Note

    +
    +

    Each try statments requires at least one catch or finally clause.

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    + Copyright © 2020 Arjun Adhikari +
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    Exception Handling

    +
      +
    • Exception is an abnormal condition that arises in a code sequence at run time.
      • +
    • When an exceptional condition arises, an object representing that exception is created and thrown in the method that caused the error.
      • +
    • +

      Exceptions can be generated by :

      +
        +
      • Java run-time system
        + Exceptions thrown by Java relate to fundamental errors that violate the rules of Java language or the constraints of Java execution environment.
        • +
      • Can be manually generated by your code.
        • +
      +

      Java exception handling is managed via five keywords:
      +1. try +2. throw +3. catch +4. throws +5. finally

      +

      Exception Figure
      +Exception Figure One

      +
      • +
    +
    +

    Exception is recoverable.
    +Error is non-recoverable. Eg: lack of resources ➡ Our of memory.

    +
    +

    Under Runtime Exception +1. Arithmetic Exception +2. Null Pointer Exception

    +

    Uncaught Exceptions:

    +
    class Exception{
+    public static void main(String[] args){
+        int d = 0;
+        int a = 42 / d; 
+    }
+}
+
    +

    Array Out of Bound Exception

    +

    Here, java runtime system detects the attemps to divide by zero, it constructs a new exception object and then throws this exception. This causes the execution of Exception class to stop because once an exception has been thrown , it must be caught by an exception handler and dealed with immediately.
    +Here we haven't supplied any exception handlers of our own, so the exception is caught by the default handler provided by Java Runtime System.

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    Throw

    +
      +
    • So far, you have only been catching exceptions that are thrown by the Java run-time system.
      • +
    • However, it is possible to throw an exception explicitly, using throw statement.
      • +
    +

    General Form :

    +

    throw throwableInstance;

    +

    Here, ThrowableInstance must be an object of type Throwable or a subclass of Throwable.

    +
      +
    • There are two ways you can obtain a Throwable Object.
      • +
    • Using a parameter in catch clause
      • +
    • Creating one with the new operator.
      • +
    +

    The flow of execution stops immediately after the throw statement; any subsequent statements are not executed. The nearest enclosing try block is inspected to see if it has a catch statement that matches the type of exception.

    +

    It if does find a match, control is transferred to that statement. If not, then the next enclosing try statement is inspected and so on. If no matching catch is found, then the default exception handler halts the program and prints the stack trace. // Error aauni wala

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    Throws

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      If a method is capable of causing an exception that it doesn't handle, it must specify this behaviour so that colors of the method can guard themself against that exception you do this by including a throws clause in the method declaration.

      +
      • +
    • +

      A throw clause lists the type of exception that a method might throw. This is necessary for all exception, except those of type Error and or runtime Exception or any of their subclasses. All other exception that a method can throw must be declared in throw clause. If they are not, a compile time error will occur.

      +
      • +
    +

    General Form :

    +
        type methodName (parameter list) throws exceptionList{ / Exception 1, Exception 2 ... etc.
+        // code goes here
+    }
+
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/general/ExportInJSON/DecodeJSON.java b/general/ExportInJSON/DecodeJSON.java similarity index 100% rename from notes/general/ExportInJSON/DecodeJSON.java rename to general/ExportInJSON/DecodeJSON.java diff --git a/notes/general/ExportInJSON/ExportInJSON.java b/general/ExportInJSON/ExportInJSON.java similarity index 100% rename from notes/general/ExportInJSON/ExportInJSON.java rename to general/ExportInJSON/ExportInJSON.java diff --git a/notes/general/ExportInJSON/JSONEncodeDemo.java b/general/ExportInJSON/JSONEncodeDemo.java similarity index 100% rename from notes/general/ExportInJSON/JSONEncodeDemo.java rename to general/ExportInJSON/JSONEncodeDemo.java diff --git a/notes/general/Overriding.java b/general/Overriding.java similarity index 100% rename from notes/general/Overriding.java rename to general/Overriding.java diff --git a/notes/general/OwnException.java b/general/OwnException.java similarity index 100% rename from notes/general/OwnException.java rename to general/OwnException.java diff --git a/notes/general/RunComment.java b/general/RunComment.java similarity index 100% rename from notes/general/RunComment.java rename to general/RunComment.java diff --git a/notes/general/Stack.java b/general/Stack.java similarity index 100% rename from notes/general/Stack.java rename to general/Stack.java diff --git a/notes/general/StackDemo.java b/general/StackDemo.java similarity index 100% rename from notes/general/StackDemo.java rename to general/StackDemo.java diff --git a/notes/general/TargetSumByTwo.java b/general/TargetSumByTwo.java similarity index 100% rename from notes/general/TargetSumByTwo.java rename to general/TargetSumByTwo.java diff --git a/general/index.html b/general/index.html new file mode 100644 index 00000000..8b333ae0 --- /dev/null +++ b/general/index.html @@ -0,0 +1,1380 @@ + + + + + + + + + + + + + + + + + + General Java Questions - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    General Java Questions

    +
      +
    1. Write a program that accepts a number and checks if it equal to the sum of any two numbers in array divided by two. If it doesn't contains such numbers, it should print message to user "No such numbers found in array".
      +

      Link to the answer : Click here

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      2. +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/general/internalRepresentation.java b/general/internalRepresentation.java similarity index 100% rename from notes/general/internalRepresentation.java rename to general/internalRepresentation.java diff --git a/notes/general/swapWithoutThirdVariable.java b/general/swapWithoutThirdVariable.java similarity index 100% rename from notes/general/swapWithoutThirdVariable.java rename to general/swapWithoutThirdVariable.java diff --git a/notes/general/withoutArithmeticOperators.java b/general/withoutArithmeticOperators.java similarity index 100% rename from notes/general/withoutArithmeticOperators.java rename to general/withoutArithmeticOperators.java diff --git a/notes/graphics/barChart/BarChart.java b/graphics/barChart/BarChart.java similarity index 100% rename from notes/graphics/barChart/BarChart.java rename to graphics/barChart/BarChart.java diff --git a/notes/graphics/color/ColorJPanel.java b/graphics/color/ColorJPanel.java similarity index 100% rename from notes/graphics/color/ColorJPanel.java rename to graphics/color/ColorJPanel.java diff --git a/notes/graphics/color/ShowColors.java b/graphics/color/ShowColors.java similarity index 100% rename from notes/graphics/color/ShowColors.java rename to graphics/color/ShowColors.java diff --git a/graphics/color/index.html b/graphics/color/index.html new file mode 100644 index 00000000..9db1d649 --- /dev/null +++ b/graphics/color/index.html @@ -0,0 +1,1439 @@ + + + + + + + + + + + + + + + + + + Color Control - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Color Control

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    Color constants and their RGB values

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    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    ConstantRGB Value
    public static final Color RED255,0,0
    public static final Color GREEN0,255,0
    public static final Color BLUE0,0,255
    public static final Color ORANGE255,200,0
    public static final Color PINK255,75,175
    public static final Color CYAN0,255,255
    public static final Color MAGNETA255,0,255
    public static final Color YELLOW255,255,0
    public static final Color BLACK0,0,0
    public static final Color WHITE255,255,255
    public static final Color GRAY128,128,128
    public static final Color LIGHT_GRAY192,192,192
    public static final Color DARK_GRAY64,64,64
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/graphics/color/withApplet/ColorDemo.java b/graphics/color/withApplet/ColorDemo.java similarity index 100% rename from notes/graphics/color/withApplet/ColorDemo.java rename to graphics/color/withApplet/ColorDemo.java diff --git a/graphics/control/index.html b/graphics/control/index.html new file mode 100644 index 00000000..26ba96f3 --- /dev/null +++ b/graphics/control/index.html @@ -0,0 +1,1502 @@ + + + + + + + + + + + + + + + + + + Color Control - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Color Control

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    Color constants and their RGB values

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    ConstantRGB Value
    public static final Color RED255,0,0
    public static final Color GREEN0,255,0
    public static final Color BLUE0,0,255
    public static final Color ORANGE255,200,0
    public static final Color PINK255,75,175
    public static final Color CYAN0,255,255
    public static final Color MAGNETA255,0,255
    public static final Color YELLOW255,255,0
    public static final Color BLACK0,0,0
    public static final Color WHITE255,255,255
    public static final Color GRAY128,128,128
    public static final Color LIGHT_GRAY192,192,192
    public static final Color DARK_GRAY64,64,64
    +

    Constructors

    +
      +
    1. public Color(int r, int g, int b)
      +

      based on RGB values 0-255

      +
      +
      2. +
    2. public color(float r, float g, float b)
      +

      based on 0.0 to 1.0

      +
      +
      3. +
    +

    Methods

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      +
    1. public int getRed()
      2. +
    2. public int getGreen()
      3. +
    3. public int getBlue()
      4. +
    +

    Graphics method for manipulating Colors

    +
      +
    1. public int getColor()
      2. +
    2. +

      returns object representing current color for the graphics context.

      +
      3. +
    3. +

      public int setColor(Color c)

      +
      4. +
    4. Sets current color for drawing with the graphics context.
      5. +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/graphics/font/CustomFontAndSize.java b/graphics/font/CustomFontAndSize.java similarity index 100% rename from notes/graphics/font/CustomFontAndSize.java rename to graphics/font/CustomFontAndSize.java diff --git a/notes/graphics/font/fontMetrics/FontMetricsDemo.java b/graphics/font/fontMetrics/FontMetricsDemo.java similarity index 100% rename from notes/graphics/font/fontMetrics/FontMetricsDemo.java rename to graphics/font/fontMetrics/FontMetricsDemo.java diff --git a/graphics/font/fontMetrics/index.html b/graphics/font/fontMetrics/index.html new file mode 100644 index 00000000..df140c2f --- /dev/null +++ b/graphics/font/fontMetrics/index.html @@ -0,0 +1,1412 @@ + + + + + + + + + + + + + + + + + + Font Metrics - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Font Metrics

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    Important for Exam

    +
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    Font Metrics

    +

    Methods

    +
      +
    • public int getAscent()
      • +
    • public int getDescent()
      • +
    • public int getLeading()
      • +
    • public int getHeight()
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    Graphics Methods for getting a Font's Font Metrics

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    • public FontMetrics getFontMetrics()
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    • public FontMetrics getFontMetrics(Font f)
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/graphics/font/index.html b/graphics/font/index.html new file mode 100644 index 00000000..6bcc6f95 --- /dev/null +++ b/graphics/font/index.html @@ -0,0 +1,1433 @@ + + + + + + + + + + + + + + + + + + Manipulating Fonts - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Manipulating Fonts

    +

    Constants

    +

    public static final int PLAIN
    +public static final int BOLD
    +public static final int ITALIC

    +

    Graphics methods for manipulating fonts

    +
      +
    • public Font getText()
      • +
    • public void setFont(Font f)
      • +
    +

    Constructors

    +
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    • public Font(String name, int style, int size)
      • +
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    Methods

    +
      +
    • public int getStyle()
      • +
    • public int getSize()
      • +
    • public String getName()
      • +
    • public String getFamily()
      • +
    • public boolean isPlain()
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    • public boolean isBold()
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    • public boolean isItalic()
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/graphics/geometry/DrawArc.java b/graphics/geometry/DrawArc.java similarity index 100% rename from notes/graphics/geometry/DrawArc.java rename to graphics/geometry/DrawArc.java diff --git a/notes/graphics/geometry/DrawOval.java b/graphics/geometry/DrawOval.java similarity index 100% rename from notes/graphics/geometry/DrawOval.java rename to graphics/geometry/DrawOval.java diff --git a/notes/graphics/geometry/DrawRectangle.java b/graphics/geometry/DrawRectangle.java similarity index 100% rename from notes/graphics/geometry/DrawRectangle.java rename to graphics/geometry/DrawRectangle.java diff --git a/notes/graphics/geometry/PolyLineDemo.java b/graphics/geometry/PolyLineDemo.java similarity index 100% rename from notes/graphics/geometry/PolyLineDemo.java rename to graphics/geometry/PolyLineDemo.java diff --git a/notes/graphics/geometry/PolygonDemo.java b/graphics/geometry/PolygonDemo.java similarity index 100% rename from notes/graphics/geometry/PolygonDemo.java rename to graphics/geometry/PolygonDemo.java diff --git a/notes/graphics/geometry/RoundRectangle.java b/graphics/geometry/RoundRectangle.java similarity index 100% rename from notes/graphics/geometry/RoundRectangle.java rename to graphics/geometry/RoundRectangle.java diff --git a/graphics/geometry/index.html b/graphics/geometry/index.html new file mode 100644 index 00000000..7c3e2b6e --- /dev/null +++ b/graphics/geometry/index.html @@ -0,0 +1,1502 @@ + + + + + + + + + + + + + + + + + + Geometrical Elements - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Geometrical Elements

    +

    Line

    +
      +
    • public void drawLine(int x1, int y1, int x2, int y2);
      • +
    +

    Rectangle

    +
      +
    • public void drawRect(int x, int y, int width, int height);
      • +
    • public void fillRect(int x, int y, int width, int height);
      • +
    • public void drawRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight);
      • +
    • public void fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight);
      • +
    • +
    +

    Oval

    +
      +
    • public void drawOval(int x, int y, int width, int height);
      • +
    • public void fillOval(int x, int y, int width, int height);
      • +
    +

    Arc

    +
      +
    • public void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle);
      • +
    • public void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle);
      • +
    +
    +

    Negative angle means rotating clockwise, positive means anti-clockwise.

    +
    +

    Drawing Polygons and Polylines

    +
      +
    • Polygons are closed multisided shapes composed of straight line segments.
      • +
    • Polylines are sequences of connected points.
      • +
    +

    Polygon Constructors

    +
      +
    • public Polygon()
      • +
    • public Polygon(int[] xValues, int[] yValues , int numberOfPoint)
      • +
    • +
    +

    Methods

    +
      +
    • +

      public void addPoint(int x, int y)

      +
      +

      To add one point to the existing polygon, we use this method.

      +
      +
      • +
    • +

      In Polygon, if the last point is different from the first, the polygon is closed by a line that connects the last point to the first.

      +
      • +
    • public Polygon()
      • +
    • In Polygon, if the last point is different from the first, the polyline is not closed.
      • +
    +

    Graphics methods for drawing Polygons

    +
      +
    • public void drawPolygon(int []xPoints, int []yPoints, int points);
      • +
    • public void drawPolyLine(int []xPoints, int []yPoints, int points);
      • +
    • public void drawPolygon(Polygon p);
      • +
    • public void fillPolygon(Polygon p);
      • +
    • public void fillPolygon(Polygon p);
      • +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/graphics/index.html b/graphics/index.html new file mode 100644 index 00000000..0d9a770b --- /dev/null +++ b/graphics/index.html @@ -0,0 +1,1418 @@ + + + + + + + + + + + + + + + + + + Graphics Context and Graphics Object - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Graphics Context and Graphics Object

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    • A graphics context enables drawing on the screen.
      • +
    • A Graphics object manages a graphics context and draws pixels pn the screen that represent text and other graphical objects (lines, ellipses, rectangles and polygons.)
      • +
    • Graphics object contain methods for drawing, font manipulation, color manipulation.
      • +
    +

    Methods that takes Graphics object as an argument

    +
      +
    1. public void paint(Graphics g)
      2. +
    2. The paint() method of the Component class takes a Graphics object as a argument.
      3. +
    3. This object is passed to the paint method by the system when a paint() method by the system when a paint operation is required for a component.
      4. +
    4. The paint() method defined in class Component does nothing by default, it must be overridden by the programmer.
      5. +
    5. The paint() method is rarely called directly by the programmer.
      6. +
    6. +

      When an applet executes, the paint() method is automatically caused. Similarly, when any component is displayed, that component's paint method is called automatically.

      +

      A. public void repaint() +- If the progammer needs to call paint(), a call is made to the Component class repaint() method. +- The paint method request a call to the Component's update method.

      +
      7. +
    7. +

      public void update()

      +
      8. +
    8. +

      In AWT GUI Components, the update() clears the background of GUI components.

      +
      9. +
    9. +

      public void paintComponent(Graphics g)

      +
      10. +
    10. Swing components the inherit from the class JComponent contain method paintComponent() that helps them to draw properly in the context of a swing GUI.
      11. +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/graphics/nepaliFlag/Moon.java b/graphics/nepaliFlag/Moon.java similarity index 100% rename from notes/graphics/nepaliFlag/Moon.java rename to graphics/nepaliFlag/Moon.java diff --git a/notes/graphics/nepaliFlag/NepaliFlag.java b/graphics/nepaliFlag/NepaliFlag.java similarity index 100% rename from notes/graphics/nepaliFlag/NepaliFlag.java rename to graphics/nepaliFlag/NepaliFlag.java diff --git a/notes/graphics/nepaliFlag/nepal.png b/graphics/nepaliFlag/nepal.png similarity index 100% rename from notes/graphics/nepaliFlag/nepal.png rename to graphics/nepaliFlag/nepal.png diff --git a/notes/graphics/smiley/Amazed.java b/graphics/smiley/Amazed.java similarity index 100% rename from notes/graphics/smiley/Amazed.java rename to graphics/smiley/Amazed.java diff --git a/notes/graphics/smiley/Teasing.java b/graphics/smiley/Teasing.java similarity index 100% rename from notes/graphics/smiley/Teasing.java rename to graphics/smiley/Teasing.java diff --git a/index.html b/index.html new file mode 100644 index 00000000..ddd39f9d --- /dev/null +++ b/index.html @@ -0,0 +1,1414 @@ + + + + + + + + + + + + + + + + + + Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Java Notes

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    Java Icon

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    +

    ✍ Arjun Adhikari, Django & Python Developer

    +
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    BCH compliance

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    Java is a general-purpose computer-programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible.

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    This note is prepared focusing the syllabus of Pokhara University with the guidance of Lecturer Nishal Gurung.

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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/introduction/DataTypes/index.html b/introduction/DataTypes/index.html new file mode 100644 index 00000000..3785ec35 --- /dev/null +++ b/introduction/DataTypes/index.html @@ -0,0 +1,1510 @@ + + + + + + + + + + + + + + + + + + Data Types - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Data Types

    +

    Java is strongly-typed language.

    +
    int x = 10.5; ❌
+boolean b = 0; ❌
+
    +
    +

    Java doesn't support 1/0 as boolean data like C/C++ .

    +
    +
      +
    • Every variable and expression has a type.
      • +
    • Every type is strictly defined.
      • +
    • Every assignment should be checked by compile type compatibility.
      • +
    +

    Note :

    +
    if(1){ // Needs true / false.
+    //doesn't run
+}
+
    +
    +

    No operator overloading, multiple inheritance are supported in Java.

    +
    +

    Syntax:

    +
    data_type identifier = literal ;
+
    +

    Data Types in Java

    +
    +

    ADT - derived from Primitive Data Type and performs action.

    +
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/introduction/IDENTIFIER/index.html b/introduction/IDENTIFIER/index.html new file mode 100644 index 00000000..9510dc77 --- /dev/null +++ b/introduction/IDENTIFIER/index.html @@ -0,0 +1,1532 @@ + + + + + + + + + + + + + + + + + + Identifiers - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Identifier

    +
      +
    • name for program for identification purpose.
      • +
    • Can be classname, method name, variable name or label name also.
      • +
    • is case sensitive.
      • +
    • is any sequence of letters, digits, " _ " , " $ " characters that doesn't begin with a digit.
      • +
    +
    +

    How many identifier here ?

    +
    +
    class Hello{
+    public static void main(String[] args){
+        int numOne = 20;
+        int numTwo = 10;
+    }
+}
+
    +

    String -> Wrapper Class
    +main -> Name of function/identifier +args -> arguments (variable, used for passing Command Line Arguments)
    +numOne, numTwo -> Variable
    +Hello -> Class Name

    + + + + + + + + + + + + + + + + + + + + + +
    username✅
    #username❌
    num1✅
    1num❌
    +
    class Test{
+    int num = 10;
+    int NUM = 20;
+    int Num = 30;
+}
+
    +
    +

    Java is case-sensitive and all three declaration of variables are valid.

    +
    +

    Notes

    +
      +
    • Identifier length is not limit.
      • +
    • Max character - no length limit 
      int while = 20; ❌
+int String = 9; ✅
+
      +
      • +
    +
    +

    String is class name, now reserved word.

    +
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/introduction/ReservedWord/index.html b/introduction/ReservedWord/index.html new file mode 100644 index 00000000..21448195 --- /dev/null +++ b/introduction/ReservedWord/index.html @@ -0,0 +1,1634 @@ + + + + + + + + + + + + + + + + + + + + Reserved Words - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Reserved Words

    + + + + + + + + + + + + + + + + + + + + + + +
    Reserved WordKeywords
    Java reserved words are the words that are reserved by Java functions or other uses that cannot be used as identifiers (e.g., variable names, function names, class names)Keywords are the reserved words that keep special meaning in Java. (e.g. for, int, class ,etc.)
    They are 53 in number till now.They are 50 in number.
    All reserved words cannot be keywords.All keywords are reserved words.
    +

    Reserved Words

    +

    Used Keywords :

    +
      +
    • Exception Handling (6)
      • +
    • Class Related (6)
      • +
    • Object Related (4)
      • +
    • For Data Type (8)
      • +
    • Control Flow (11)
      • +
    • Modifier (11)
      • +
    • Return Type (1) -> void
      • +
    • Enum(1) -> enum
      • +
    +

    Exception Handling (6)

    +
    1. try
+2. catch
+3. finally
+4. throw
+5. throws
+6. assert
+
    + +
    1. class
+2. interface
+3. extends
+4. implements
+5. package
+6. import
+
    +

    For Data Type (8)

    +
    1. byte
+2. short
+3. int
+4. long
+5. float
+6. double
+7. boolean
+8. char
+
    +

    Control Flow (11)

    +
    1. if
+2. else
+3. switch
+4. case
+5. default
+6. while
+7. do
+8. for
+9. break
+10. continue
+11. return
+
    +

    Modifier (11)

    +
    1. public
+2. private
+3. protected
+4. static
+5. final
+6. abstract
+7. synchronized
+8. native 
+9. strictfp
+10. transient
+11. volatile
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/introduction/index.html b/introduction/index.html new file mode 100644 index 00000000..83225a4c --- /dev/null +++ b/introduction/index.html @@ -0,0 +1,1533 @@ + + + + + + + + + + + + + + + + + + Introduction - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Introduction

    +

    Let's dive

    +

    alpha : testing in own organization
    +beta : testing in public
    +nightly build : daily build or nightly build is the practice of completing software build of the latest version of program on a daily basis.

    +

    JEE - Java Enterprise Edition (for enterprise level applications)
    +JSE - Java Standard Edition (for stand alone)
    +JME - Java Micro Edition (for mobiles)

    +

    History of Java

    +

    History of Java

    +

    Benefits of Java and its features

    +
      +
    1. Simple and easy to learn.
      2. +
    2. Java is almost fully OOP.
      3. +
    3. Java is robust and secure.
      4. +
    4. Architecture neutral and portable.
      5. +
    5. Multithreading
      6. +
    6. Provides High Performance
      7. +
    +
    +

    How is Java platform independent?

    +
    +

    The meaning of platform independent is that, the java source code can run on all operating systems.
    +A program is written in a language which is a human readable language. It may contain words, phrases etc which the machine does not understand. For the source code to be understood by the machine, it needs to be in a language understood by machines, typically a machine-level language.
    +So, here comes the role of a compiler. The compiler converts the high-level language (human language) into a format understood by the machines. Therefore, a compiler is a program that translates the source code for another program from a programming language into executable code.
    +This executable code may be a sequence of machine instructions that can be executed by the CPU directly, or it may be an intermediate representation that is interpreted by a virtual machine. This intermediate representation in Java is the Java Byte Code.

    +

    Step by step Execution of Java Program

    +
      +
    1. Whenever, a program is written in JAVA, the javac compiles it. + The result of the JAVA compiler is the .class file or the bytecode and not the machine native code (unlike C compiler).
      2. +
    2. The bytecode generated is a non-executable code and needs an interpreter to execute on a machine. This interpreter is the JVM and thus the Bytecode is executed by the JVM.
      3. +
    3. And finally program runs to give the desired output.
      4. +
    +

    Execution with figure

    +
    +

    Write once, run everytime.

    +
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/io/BufferedReader/ReadFromGCES.java b/io/BufferedReader/ReadFromGCES.java similarity index 100% rename from notes/io/BufferedReader/ReadFromGCES.java rename to io/BufferedReader/ReadFromGCES.java diff --git a/notes/io/BufferedReader/ReadFromGCESReadLine.java b/io/BufferedReader/ReadFromGCESReadLine.java similarity index 100% rename from notes/io/BufferedReader/ReadFromGCESReadLine.java rename to io/BufferedReader/ReadFromGCESReadLine.java diff --git a/notes/io/BufferedReader/gces.txt b/io/BufferedReader/gces.txt similarity index 100% rename from notes/io/BufferedReader/gces.txt rename to io/BufferedReader/gces.txt diff --git a/io/BufferedReader/index.html b/io/BufferedReader/index.html new file mode 100644 index 00000000..072ef26f --- /dev/null +++ b/io/BufferedReader/index.html @@ -0,0 +1,1624 @@ + + + + + + + + + + + + + + + + + + + + BufferedReader - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    BufferedReader

    + +
    +

    Read line by line or char by char

    +
    +

    Constructors

    +
      +
    1. BufferedReader br = new BufferedReader("abc.txt"); ❌ // cannot directly communicate with data.
      2. +
    2. BufferedReader br = new BufferedReader(Reader r);
      3. +
    3. BufferedReader br = new BufferedReader(Reader r, int BufferSize);
      4. +
    +

    Methods

    +
      +
    1. int read()
      2. +
    2. int read(char[] ch)
      3. +
    3. void close() // 1, 2 3 are same as FileReader
      4. +
    4. String readline()
        +
      • To insert line separator.
        • +
      +
      5. +
    +

    Examples

    +

    Text File

    +
      +
    • A sample text file named "gces.txt". +
      gces
+2019
+Happy New Year
+
      • +
    +

    Read File

    +
      +
    • Read from "gces.txt" with BufferedReader. +
      import java.io.FileReader;
+import java.io.IOException;
+import java.io.BufferedReader;
+
+class GCES {
+    public static void main(String[] args) {
+        try {
+            BufferedReader br = new BufferedReader(new FileReader("gces.txt"));
+            int i = br.read(); // Reads the character and stores in integer value - Unicode
+            while (i != -1) { // Denotes no character
+                System.out.print((char) i); // Type hinting
+                i = br.read(); // Iteratively reads the character one by one until loop terminates.
+            }
+            br.close();
+        } catch (IOException error) {
+            error.printStackTrace();
+        }
+    }
+}
+
      • +
    +

    Read File With ReadLine

    +
      +
    • Read from "gces.txt" with BufferedReader using readLine() method.. +
      import java.io.FileReader;
+import java.io.IOException;
+import java.io.BufferedReader;
+
+class GCES {
+    public static void main(String[] args) {
+        try {
+            BufferedReader br = new BufferedReader(new FileReader("gces.txt"));
+            int i = br.read(); // Reads the character and stores in integer value - Unicode
+            while (i != -1) { // Denotes no character
+                System.out.print((char) i); // Type hinting
+                i = br.read(); // Iteratively reads the character one by one until loop terminates.
+            }
+            br.close();
+        } catch (IOException error) {
+            error.printStackTrace();
+        }
+    }
+}
+
      • +
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/io/BufferedWriter/WriteOnGCES.java b/io/BufferedWriter/WriteOnGCES.java similarity index 100% rename from notes/io/BufferedWriter/WriteOnGCES.java rename to io/BufferedWriter/WriteOnGCES.java diff --git a/io/BufferedWriter/index.html b/io/BufferedWriter/index.html new file mode 100644 index 00000000..fd4d3166 --- /dev/null +++ b/io/BufferedWriter/index.html @@ -0,0 +1,1677 @@ + + + + + + + + + + + + + + + + + + + + BufferedWriter - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    BufferedWriter

    + +

    Constructors :

    +
      +
    1. BufferedWriter bw = new BufferedWriter("abc.txt"); ❌ // cannot directly communicate with data.
      +BufferedWriter bw = new BufferedWriter(Writer w);
      2. +
    2. BufferedWriter bw = new BufferedWriter(Writer w, int buffer size);
      3. +
    +

    Which one of these are true ?

    +
      +
    1. BufferedWriter bw = new BufferedWriter("abc.txt") ❌
      2. +
    2. BufferedWriter bw = new BufferedWriter(new File("abc.txt")) ❌
      3. +
    3. BufferedWriter bw = new BufferedWriter(new FileWriter("abc.txt")) ✅
      4. +
    4. BufferedWriter bw = new BufferedWriter(new FileWriter(new FileWriter("abc.txt"))) ❌
      5. +
    +

    Methods

    +
      +
    1. write (int ch)
      2. +
    2. write(char[] ch)
      3. +
    3. write(String s)
      4. +
    4. flush()
      5. +
    5. close()
      6. +
    6. +

      newLine()

      +
        +
      • To insert line separator.
        • +
      +
      7. +
    7. +

      BufferedWriter is almost similar to FileWriter but it uses internal buffer to write data into file. So, if the number of write operation are more, the actual IO operations are less and performance is better.

      +
      8. +
    8. You should use BufferedWriter when no. of write operations are more.
      9. +
    +

    Examples

    +

    Write On File

    +
      +
    • Write some text on file named "gces.txt". +
      import java.io.*;
+
+class GCES {
+    public static void main(String[] args) {
+        try {
+            BufferedWriter bw = new BufferedWriter(new FileWriter("gces.txt"));
+            bw.write("gces");
+            bw.newLine();
+            bw.write("2019");
+            bw.newLine();
+            bw.write("Happy New Year");
+            bw.flush();
+            bw.close();
+        } catch (IOException error) {
+            error.printStackTrace();
+        }
+
+    }
+}
+
      • +
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/io/File/CLA/DisplayWithCLA.java b/io/File/CLA/DisplayWithCLA.java similarity index 100% rename from notes/io/File/CLA/DisplayWithCLA.java rename to io/File/CLA/DisplayWithCLA.java diff --git a/io/File/CLA/index.html b/io/File/CLA/index.html new file mode 100644 index 00000000..07272dde --- /dev/null +++ b/io/File/CLA/index.html @@ -0,0 +1,1631 @@ + + + + + + + + + + + + + + + + + + + + File CLI App - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    File CLI App

    + +
    +

    Program that displays files and directories based on Command Line Arguments passed.

    +
    +

    First path, then filter :)

    +

    Cases

    +
    +

    No CLA provided : +- It displays all files and directories from the default path.

    +
    +
        javac DisplayWithCLA.java && java Display
+
    +
    +

    -f or -d provided : +- It displays either files or directories from the default path.

    +
    +
        javac DisplayWithCLA.java && java Display -f // Displays files from default path.
+    javac DisplayWithCLA.java && java Display -d // Displays directories from default path.
+
    +
    +

    Path provided : +- It displays all files and directories from the given path.

    +
    +
        javac DisplayWithCLA.java && java Display C:\users
+
    +
    +

    Path with -f or -d provided : +- It displays either files or directories from the given path.

    +
    +
        javac DisplayWithCLA.java && java Display C:\Users -f // Displays files from given path.
+    javac DisplayWithCLA.java && java Display C:\users -d // Displays directories from given path.
+
    +

    Source Code

    +
    // Importing File class from Java io package.
+// CLA in documentation refers to Command Line Argument.
+
+import java.io.File;
+
+// Creating a class named Display.
+class Display{
+    public static void main(String[] args){
+        // To prevent any of the exception that may arise, I put the codes under try block.
+        try{
+            // File type object is created. This is used when no path is passed as Command Line Argument.
+            File defaultPath = new File ("C:\\users\\arjun\\Desktop");
+            // File type array is created for the every file present on default path.
+            File[] filesInDefaultDirectory = defaultPath.listFiles();
+
+            // If the Command Line Argument is provided.
+            if(args.length != 0){
+                //  If only one Command Line Argument is passed.
+                if(args.length == 1){
+
+                    // Creating a file type object from the Given Command Line Argument.
+                    File fileFromPath = new File(args[0]);
+
+                    // If CLA is either -f or -d.
+                    if(args[0].equals("-f") || args[0].equals("-d")){
+
+                        // If CLA is -f.
+                        if(args[0].equals("-f")){
+                            // Assigns each file object of array to another file type object; for-each loop.
+                            System.out.println("\nFiles listing on default path : ");
+                            for(File filesInDefaultDir:filesInDefaultDirectory){
+
+                                // Returns true if the file type object is file.
+                                if(filesInDefaultDir.isFile()){
+                                    System.out.println(">> "+filesInDefaultDir.getName());
+                                }
+                            }
+                            System.out.println("Provided Command Line Argument : "+args[0]);
+
+                        // If CLA is -d.
+                        }else if(args[0].equals("-d")){
+                            System.out.println("\nDirectory listing on default path : ");
+                            // Assigns each file object of array to another file type object; for-each loop.
+                            for(File foldersInDefaultDir:filesInDefaultDirectory){
+                                // Returns true if the file type object is directory.
+                                if(foldersInDefaultDir.isDirectory()){
+                                    System.out.println(">> "+foldersInDefaultDir.getName());
+                                }
+                            }
+                            System.out.println("Provided Command Line Argument : "+args[0]);
+                        }
+
+                    // If CLA is path of any directory.
+                    }else if(fileFromPath.isDirectory()){
+
+                        // Assigning CLA to string variable.
+                        String path = args[0];                        
+
+                        // Creating the file type object array of the files and directories present in the given path.
+                        File[] thisDirectoryFromPath = fileFromPath.listFiles();
+                        System.out.println("\nYou're in : "+fileFromPath.getAbsolutePath()+"\n"); 
+
+                        // Assigns each file object of array to another file type object; for-each loop.
+                        for(File thisDirFromPath : thisDirectoryFromPath){
+                            // Prints if the file type object is either file or directory.
+                            if(thisDirFromPath.isFile() || thisDirFromPath.isDirectory()){ 
+                                System.out.println(">> "+thisDirFromPath.getName());
+                            }
+                        }
+                        System.out.println("Provided Path : "+path);                        
+                    }
+
+                // Checks if CLA equals to two.
+                }else if (args.length == 2){
+
+                    // Creates file type object from the CLA number one.
+                    File fileFromPath = new File(args[0]);
+
+                    // File type array is created for the every file present on default path.
+                    File[] thisDirectoryFromPath = fileFromPath.listFiles();
+                    System.out.println("\nYou're in : "+fileFromPath.getAbsolutePath()+"\n"); 
+                    for(File thisDirFromPath : thisDirectoryFromPath){
+
+                        // Prints if the file type object is either file or directory.
+                        if(thisDirFromPath.isFile() || thisDirFromPath.isDirectory()){ 
+
+                            // Checks if CLA number two is either -f or -d.
+                            if(args[1].equals("-f")){
+                                if(thisDirFromPath.isFile()){
+                                    System.out.println(">> "+thisDirFromPath.getName());
+                                }
+                            }else if(args[1].equals("-d")){
+                                if(thisDirFromPath.isDirectory()){
+                                    System.out.println(">> "+thisDirFromPath.getName());
+                                }
+                            }
+                        }
+                    }
+                }
+            }else{
+                // This runs if none of CLA is passed; it displays all files and directories from default path provided.
+                File[] thisDirectoryDefault = defaultPath.listFiles();
+                System.out.println("\nYou're in : "+defaultPath.getAbsolutePath()+"\n"); 
+                for(File thisDirDefault : thisDirectoryDefault){
+                    if(thisDirDefault.isFile() || thisDirDefault.isDirectory()){ 
+                        System.out.println(">> "+thisDirDefault.getName());
+                    }
+                }
+                System.out.println("Default Path : "+defaultPath);
+            }            
+        }catch(Exception error){
+            // Prints the error if arised.
+            error.printStackTrace();
+        }   
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/io/File/CountsFile.java b/io/File/CountsFile.java similarity index 100% rename from notes/io/File/CountsFile.java rename to io/File/CountsFile.java diff --git a/notes/io/File/DisplayFileAndDirectories.java b/io/File/DisplayFileAndDirectories.java similarity index 100% rename from notes/io/File/DisplayFileAndDirectories.java rename to io/File/DisplayFileAndDirectories.java diff --git a/notes/io/File/MyFileInsideFolder.java b/io/File/MyFileInsideFolder.java similarity index 100% rename from notes/io/File/MyFileInsideFolder.java rename to io/File/MyFileInsideFolder.java diff --git a/notes/io/File/MyFileInsideFolderWithCondition.java b/io/File/MyFileInsideFolderWithCondition.java similarity index 100% rename from notes/io/File/MyFileInsideFolderWithCondition.java rename to io/File/MyFileInsideFolderWithCondition.java diff --git a/io/File/index.html b/io/File/index.html new file mode 100644 index 00000000..e1a17ee4 --- /dev/null +++ b/io/File/index.html @@ -0,0 +1,1676 @@ + + + + + + + + + + + + + + + + + + + + File - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Introduction

    + +

    File f = new File ("myTextFile.txt")
    +- Won't create physical file but this is java ile object.

    +

    Check Existence

    +

    System.out.println(f.exists()); // It returns false.

    +

    Create File

    +

    f.createNewFile();
    +f.exists(); // Now, it returns true.

    +

    Java io is used on UNIX system. It can be used to represent directory also.

    +

    Create Directory

    +

    File f = new File ("GCES") ;
    +f.mkdir() ;

    +

    Constructors

    +
      +
    1. File f = new File(String name);
      2. +
    2. +

      To represent resources in current working directory.

      +
      3. +
    3. +

      File f = new File("directory = name","file name");

      +
      4. +
    4. +

      File f = new File(File subdirectory, String name);

      +
      5. +
    +
    +

    File subdirectory refers to another object of File type.

    +
    +

    Methods

    +
      +
    1. boolean exists();
      2. +
    2. boolean createNewFile();
      3. +
    3. boolean mkdir();
      4. +
    4. boolean isFile();
      5. +
    5. boolean isDirectory();
      6. +
    6. String[] list();
      7. +
    7. long length();
      8. +
    8. boolean delete();
      9. +
    +

    Examples

    +

    Counts File inside Directory

    +
      +
    • Counts file inside a directory path.. +
      import java.io.File;
+
+class CountsFile{
+    private static int count; // Count variable to count the no of files.
+    public static void count(){
+        count++; // Every time the method is envoked, count increases by 1.
+    }
+    public static int getCount(){
+        return count; // Getter for count.
+    }
+
+    public static void main(String[] args){
+        try{
+            File fileObjectOne = new File("C:\\users\\arjun\\Desktop\\workspace\\Java\\packages\\io\\File"); // My directory structure.
+            System.out.println("Is this directory : "+fileObjectOne.isDirectory()); // Checks the given path is folder or not and returns boolean value.
+
+            File[] thisDirectory = fileObjectOne.listFiles(); // Returns an array of abstract pathnames denoting the files in the directory denoted by this abstract pathname. If this abstract pathname does not denote a directory, then this method returns null. 
+            for(File thisDir:thisDirectory){
+                if(thisDir.isFile()){ // Tests whether the file denoted by this abstract pathname is a normal file. A file is normal if it is not a directory and, in addition, satisfies other system-dependent criteria. Any non-directory file created by a Java application is guaranteed to be a normal file.
+                    System.out.println(">> "+thisDir.getName()); // Returns the name of the file or directory denoted by this abstract pathname. This is just the last name in the pathname's name sequence. If the pathname's name sequence is empty, then the empty string is returned.
+                    count();
+                }
+            }
+        }catch(Exception error){
+            error.printStackTrace();
+        }finally{
+            System.out.println("Total no of files : "+getCount());
+        }
+    }
+}
+
      • +
    +

    Display File and Directories

    +
      +
    • Display a list of files and directories inside a directory path. +
      import java.io.File;
+
+class DisplayAll{
+    public static void main(String[] args){
+        try{
+            File fileObjectOne = new File("C:\\users\\arjun\\Desktop\\"); 
+
+            File[] thisDirectory = fileObjectOne.listFiles();
+            System.out.println("\nYou're in : "+fileObjectOne.getAbsolutePath()+"\n"); 
+            for(File thisDir:thisDirectory){
+                if(thisDir.isFile() || thisDir.isDirectory()){ 
+                    System.out.println(">> "+thisDir.getName());
+                }
+            }
+        }catch(Exception error){
+            error.printStackTrace();
+        }
+    }
+}
+
      • +
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/io/FileReader/FileReaderDemo.java b/io/FileReader/FileReaderDemo.java similarity index 100% rename from notes/io/FileReader/FileReaderDemo.java rename to io/FileReader/FileReaderDemo.java diff --git a/notes/io/FileReader/FileReaderIntoArray.java b/io/FileReader/FileReaderIntoArray.java similarity index 100% rename from notes/io/FileReader/FileReaderIntoArray.java rename to io/FileReader/FileReaderIntoArray.java diff --git a/io/FileReader/index.html b/io/FileReader/index.html new file mode 100644 index 00000000..ef0d622d --- /dev/null +++ b/io/FileReader/index.html @@ -0,0 +1,1622 @@ + + + + + + + + + + + + + + + + + + + + FileReader - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    FileReader

    + +
      +
    • to read characters data or text data.
      • +
    • Here, we can read character by character by character; not line by line.
      • +
    +

    Constructors

    +
      +
    1. FileReader fr = new FileReader(String fileName);
      2. +
    2. FileReader fr = new FileReader(File f);
      3. +
    +

    If no file is available, this will throw exception.

    +

    Methods

    +
      +
    1. int read ()
      2. +
    2. Unicode value of character.
      3. +
    3. int read (char[] ch)
      4. +
    4. no of characters copied from file into array.
      5. +
    5. void close()
      6. +
    +

    Examples

    +

    Text File

    +
    Hello my name is Arjun.
+
    +

    Read File By Looping

    +
      +
    • Demo of a FileReader class. +
      import java.io.FileReader;
+import java.io.IOException;
+
+
+class FileReaderDemo{
+
+    // Method : int read()
+    public static void main(String[] args){
+        try{
+            FileReader fr  = new FileReader("myText.txt");
+            int i = fr.read();
+            while(i != -1){ // Denotes no character
+                System.out.print((char)i); // Type-hinting
+                i = fr.read();
+            }
+            fr.close();
+        }catch(IOException error){
+            error.printStackTrace();
+        }
+    }   
+}
+
      • +
    +

    Read File With Character Array

    +
      +
    • Demo of a FileReader class using a array. +
      import java.io.*;
+
+class FileReaderDemo{
+    public static void main(String[] args){
+        try{
+            // Method : int read(char[] ch)
+            File f = new File("myText.txt");
+            // Dynamically allocating the size of the array according to the text length inside file.
+            char[] ch = new char[(int)f.length()];
+            FileReader fr = new FileReader(f);
+            fr.read(ch);
+            // Assigns each character into another character variable.
+            for(char ch1:ch){
+                System.out.print(ch1);
+            }
+            fr.close();
+        }catch(IOException error){
+            error.printStackTrace();
+        }
+    }
+}
+
      • +
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/io/FileReader/myText.txt b/io/FileReader/myText.txt similarity index 100% rename from notes/io/FileReader/myText.txt rename to io/FileReader/myText.txt diff --git a/notes/io/FileWriter/FileWriterAppendDemo.java b/io/FileWriter/FileWriterAppendDemo.java similarity index 100% rename from notes/io/FileWriter/FileWriterAppendDemo.java rename to io/FileWriter/FileWriterAppendDemo.java diff --git a/notes/io/FileWriter/FileWriterDemo.java b/io/FileWriter/FileWriterDemo.java similarity index 100% rename from notes/io/FileWriter/FileWriterDemo.java rename to io/FileWriter/FileWriterDemo.java diff --git a/io/FileWriter/index.html b/io/FileWriter/index.html new file mode 100644 index 00000000..8593e96e --- /dev/null +++ b/io/FileWriter/index.html @@ -0,0 +1,1605 @@ + + + + + + + + + + + + + + + + + + + + File Writer (Text data or character data) - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    FileWriter

    + +

    Constructors

    +
      +
    1. FileWriter fw = new FileWriter(String name);
      2. +
    2. FileWriter fw = new FileWriter(File f);
      3. +
    3. FileWriter fw = new FileWriter(String name, boolean append);
      4. +
    4. FileWriter fw = new FileWriter(File f, boolean append);
      5. +
    +
    +

    Constructors listed 1 and 2 overrides the existing data, but Constructors listed 3 and 4 appends to existing data.

    +
    +

    If no file is available, this will create that file.

    +

    Methods

    +
      +
    1. write (int ch)
      2. +
    2. +

      to write a single character to the file.

      +
      fw.write(100); // Unicode value for d is 100
+fw.write('d'); // Both writes d.
+
      +
      3. +
    3. +

      write(char[] ch)

      +
      4. +
    4. write(String s)
      5. +
    5. flush()
      6. +
    6. To guarantee our data including last char also on written property.
      7. +
    7. close()
      8. +
    +

    Examples

    +

    FileWriter Demo

    +
    import java.io.*;
+
+class FileWriterDemo {
+    public static void main(String[] args) {
+        try {
+            FileWriter fw = new FileWriter("abc.txt");
+            fw.write(100);
+            fw.write("abc \n Software");
+            // Paragraph Break
+            fw.write('\n');
+            // Character Array
+            char[] ch = { 'a', 'b', 'c' };
+            // Writing character array
+            fw.write(ch);
+            fw.write('\n');
+            fw.flush();
+            fw.close();
+        } catch (IOException error) {
+            error.printStackTrace();
+        }
+    }
+}
+
    +

    FileWriter Append Demo

    +
    import java.io.*;
+
+class FileWriterAppendDemo{
+    public static void  main(String[] args){
+        try{
+            // Appends
+            FileWriter fw = new FileWriter("abc.txt",true);
+
+            fw.write("\n Arjun");
+            fw.flush();
+            fw.close();
+        }catch(IOException error ){
+            error.printStackTrace();
+        }
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/io/PrintWriter/WriteIntoFile.java b/io/PrintWriter/WriteIntoFile.java similarity index 100% rename from notes/io/PrintWriter/WriteIntoFile.java rename to io/PrintWriter/WriteIntoFile.java diff --git a/io/PrintWriter/index.html b/io/PrintWriter/index.html new file mode 100644 index 00000000..560f73a1 --- /dev/null +++ b/io/PrintWriter/index.html @@ -0,0 +1,1563 @@ + + + + + + + + + + + + + + + + + + + + PrintWriter - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    PrintWriter

    + +
    +

    Solves problems of FileWriter and BufferedWriter

    +
    +

    Constructors :

    +
      +
    1. PrintWriter bw = new PrintWriter(String fname);
      2. +
    2. PrintWriter bw = new PrintWriter(File f);
      3. +
    3. PrintWriter bw = new PrintWriter(Writer w);
      4. +
    +

    Methods

    +
      +
    1. write (int ch)
      2. +
    2. write(char[] ch)
      3. +
    3. write(String s)
      4. +
    4. flush()
      5. +
    5. close()
      6. +
    6. print(char ch)...print(int i)...print(boolean b)...print(String s)
      7. +
    7. println(char ch)...println(int i)...println(boolean b)...println(String s)
      8. +
    +

    Examples

    +

    Write On File

    +
      +
    • Write some text on file named "abc.txt". +
      import java.io.*;
+
+class Sample {
+    public static void main(String[] args) {
+        try {
+            PrintWriter pw = new PrintWriter("abc.txt");
+            pw.print('d'); // Writes character
+            pw.print(100 + "\n"); // Writes integer
+            pw.print(true + "\n"); // Writes boolean
+            pw.print('c' + "\n"); // Writes Character
+            pw.print("gces" + "\n"); // Writes string
+            pw.flush();
+            pw.close();
+        } catch (IOException error) {
+            error.printStackTrace();
+        }
+    }
+}
+
      • +
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/io/index.html b/io/index.html new file mode 100644 index 00000000..5da4dd77 --- /dev/null +++ b/io/index.html @@ -0,0 +1,1482 @@ + + + + + + + + + + + + + + + + + + Introduction - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Java io Package

    +
    +

    io refers to input / output.

    +
    +

    Provides for system input and output through data streams, serialization and the file system. Unless otherwise noted, passing a null argument to a constructor or method in any class or interface in this package will cause a NullPointerException to be thrown.

    +

    Classes :

    +
      +
    1. File
      2. +
    2. FileWriter
      3. +
    3. FileReader
      4. +
    4. BufferedWriter
      5. +
    5. BufferedReader
      6. +
    6. PrintWriter
      7. +
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/io/more-examples/DisplayTextFiles.java b/io/more-examples/DisplayTextFiles.java similarity index 100% rename from notes/io/more-examples/DisplayTextFiles.java rename to io/more-examples/DisplayTextFiles.java diff --git a/notes/io/more-examples/MergeFiles.java b/io/more-examples/MergeFiles.java similarity index 100% rename from notes/io/more-examples/MergeFiles.java rename to io/more-examples/MergeFiles.java diff --git a/notes/io/more-examples/MergeFilesAlternatively.java b/io/more-examples/MergeFilesAlternatively.java similarity index 100% rename from notes/io/more-examples/MergeFilesAlternatively.java rename to io/more-examples/MergeFilesAlternatively.java diff --git a/notes/io/more-examples/MergeTextFromGivenPath.java b/io/more-examples/MergeTextFromGivenPath.java similarity index 100% rename from notes/io/more-examples/MergeTextFromGivenPath.java rename to io/more-examples/MergeTextFromGivenPath.java diff --git a/notes/io/more-examples/abc.txt b/io/more-examples/abc.txt similarity index 100% rename from notes/io/more-examples/abc.txt rename to io/more-examples/abc.txt diff --git a/io/more-examples/index.html b/io/more-examples/index.html new file mode 100644 index 00000000..b96aa5e6 --- /dev/null +++ b/io/more-examples/index.html @@ -0,0 +1,1655 @@ + + + + + + + + + + + + + + + + + + + + More Examples - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    More Examples

    + +

    Text File

    +
      +
    • +

      A sample text file named "abc.txt". +

      First line from File one
+Second Line from File one
+

      +
      • +
    • +

      A sample text file named "xyz.txt". +

      First line from File two
+Second Line from File Two
+

      +
      • +
    +

    Display Text Files

    +
      +
    • Display all text files inside a given directory path.. +
      import java.io.*;
+
+class DisplayTextFiles {
+    public static void main(String[] args) throws IOException {
+        String path = "C:/users/arjun/Desktop";
+        File[] filesFromPath = (new File(path)).listFiles();
+        for (File fileFromPath : filesFromPath) {
+
+            if (fileFromPath.getName().endsWith(".txt")) { // First getName() will return the file name into string and endsWith() checks the file extension like REGEX.
+                System.out.println(fileFromPath.getName()); // Prints all txt files in Desktop.
+            }
+        }
+    }
+}
+
      • +
    +

    Merge Text Files

    +
      +
    • Read from "abc.txt" and "xyz.txt" and merge into "finalText.txt" file. +
      import java.io.*;
+
+class MergeFiles{
+    public static void main(String[] args)throws IOException{
+        try{
+            PrintWriter pw = new PrintWriter(new File("finalText.txt"));
+            BufferedReader br = new BufferedReader(new FileReader("abc.txt"));
+            String line = br.readLine();
+            while (line != null ) { // Denotes no character
+                pw.write(line+"\n");
+                line = br.readLine(); // Iteratively reads the line one by one until loop terminates.
+            }
+
+            br = new BufferedReader(new FileReader("xyz.txt"));
+            line = br.readLine();
+            while (line != null) { // Denotes no character
+                pw.write(line + "\n");
+                line = br.readLine(); // Iteratively reads the line one by one until loop terminates.
+            }
+
+            pw.flush();
+            pw.close();
+            br.close();
+        }catch(IOException error){
+            error.printStackTrace();
+        }
+    }
+}
+
      • +
    +

    Merge Text Files Alternatively

    +
      +
    • Read from "abc.txt" and "xyz.txt" and merge into "finalText.txt" file while writing each lines from both files alternatively.. +
      import java.io.*;
+
+class MergeFiles{
+    public static void main(String[] args)throws IOException{
+        try{
+            PrintWriter pw = new PrintWriter(new File("finalText.txt"));
+            BufferedReader brOne = new BufferedReader(new FileReader("abc.txt"));
+            BufferedReader brTwo = new BufferedReader(new FileReader("xyz.txt"));
+            String lineOne = brOne.readLine();
+            String lineTwo = brTwo.readLine();
+            while (lineOne != null || lineTwo != null) { // Denotes no character
+                pw.write(lineOne+"\n");
+                pw.write(lineTwo+"\n");
+                lineOne = brOne.readLine(); // Iteratively reads the line one by one until loop terminates.
+                lineTwo = brTwo.readLine();
+            }
+
+            pw.flush();
+            pw.close();
+            brOne.close();
+            brTwo.close();
+        }catch(IOException error){
+            error.printStackTrace();
+        }
+    }
+}
+
      • +
    +

    Merge Text Files From Given Path

    +
      +
    • Read text files from a given path and merge them. +
      import java.io.*;
+class DisplayTextFiles {
+    public static void main(String[] args) throws IOException {
+        BufferedReader br; // Declaring a variable of BufferedReader data type so that it can be used inside loop to read every .txt files listed there.
+        String path = "C:/users/arjun/Desktop/"; // This is pre-specified path, you can change it.
+        PrintWriter pw = new PrintWriter(path + "mergedText.txt");
+        String line; // This will get the lines on text files.
+        String location;
+        File[] filesFromPath = (new File(path)).listFiles();
+
+        for (File fileFromPath : filesFromPath) {
+            if (fileFromPath.getName().endsWith(".txt") && !fileFromPath.getName().equals("mergedText.txt")) { // First getName() will return the file name into string and endsWith() checks the file extension like REGEX. It excludes the mergedText.txt too.
+                System.out.println("Reading from " + fileFromPath.getName()); // Prints progress message in console.
+                location = path + fileFromPath.getName();
+                br = new BufferedReader(new FileReader(location));
+                pw.write("From " + fileFromPath.getName() + "\n"); // This will write the text.
+                line = br.readLine(); // Reads a line from specified file and returns string.
+                while (line != null) { // Loop executes until the line-read is not null.
+                    pw.println(line + "\n"); // Writes each lines into the PrintWriter variable.
+                    line = br.readLine();
+                }
+                pw.write("\n");
+            }
+        }
+        System.out.println("Writing completed.");
+        // br is not initialized at this scope, so need to close() it.
+        pw.flush();
+        pw.close();
+    }
+}
+
      • +
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/io/more-examples/xyz.txt b/io/more-examples/xyz.txt similarity index 100% rename from notes/io/more-examples/xyz.txt rename to io/more-examples/xyz.txt diff --git a/literals/index.html b/literals/index.html new file mode 100644 index 00000000..cd7b1d4c --- /dev/null +++ b/literals/index.html @@ -0,0 +1,1438 @@ + + + + + + + + + + + + + + + + + + + + Literals - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Macro Rendering Error

    +

    TemplateNotFound: literals/testForLiterals/DoubleWithD.java

    +
    Traceback (most recent call last):
+  File "/opt/hostedtoolcache/Python/3.10.4/x64/lib/python3.10/site-packages/mkdocs_macros/plugin.py", line 480, in render
+    return md_template.render(**page_variables)
+  File "/opt/hostedtoolcache/Python/3.10.4/x64/lib/python3.10/site-packages/jinja2/environment.py", line 1291, in render
+    self.environment.handle_exception()
+  File "/opt/hostedtoolcache/Python/3.10.4/x64/lib/python3.10/site-packages/jinja2/environment.py", line 926, in handle_exception
+    raise rewrite_traceback_stack(source=source)
+  File "<template>", line 30, in top-level template code
+  File "/opt/hostedtoolcache/Python/3.10.4/x64/lib/python3.10/site-packages/jinja2/loaders.py", line 218, in get_source
+    raise TemplateNotFound(template)
+jinja2.exceptions.TemplateNotFound: literals/testForLiterals/DoubleWithD.java
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/literals/literals.java b/literals/literals.java similarity index 100% rename from notes/literals/literals.java rename to literals/literals.java diff --git a/notes/literals/testForLiterals/DoubleWIthD.java b/literals/testForLiterals/DoubleWIthD.java similarity index 100% rename from notes/literals/testForLiterals/DoubleWIthD.java rename to literals/testForLiterals/DoubleWIthD.java diff --git a/notes/literals/testForLiterals/DoubleWithHexaDecimalLiteral.java b/literals/testForLiterals/DoubleWithHexaDecimalLiteral.java similarity index 100% rename from notes/literals/testForLiterals/DoubleWithHexaDecimalLiteral.java rename to literals/testForLiterals/DoubleWithHexaDecimalLiteral.java diff --git a/notes/literals/testForLiterals/DoubleWithOctalLiteral.java b/literals/testForLiterals/DoubleWithOctalLiteral.java similarity index 100% rename from notes/literals/testForLiterals/DoubleWithOctalLiteral.java rename to literals/testForLiterals/DoubleWithOctalLiteral.java diff --git a/notes/literals/testForLiterals/DoubleWithoutD.java b/literals/testForLiterals/DoubleWithoutD.java similarity index 100% rename from notes/literals/testForLiterals/DoubleWithoutD.java rename to literals/testForLiterals/DoubleWithoutD.java diff --git a/notes/literals/testForLiterals/FloatWithF.java b/literals/testForLiterals/FloatWithF.java similarity index 100% rename from notes/literals/testForLiterals/FloatWithF.java rename to literals/testForLiterals/FloatWithF.java diff --git a/notes/literals/testForLiterals/FloatWithoutF.java b/literals/testForLiterals/FloatWithoutF.java similarity index 100% rename from notes/literals/testForLiterals/FloatWithoutF.java rename to literals/testForLiterals/FloatWithoutF.java diff --git a/mkdocs.yml b/mkdocs.yml deleted file mode 100644 index 86ebd46b..00000000 --- a/mkdocs.yml +++ /dev/null @@ -1,135 +0,0 @@ -site_name: Java Notes -site_url: https://github.com/thearjun/java-notes -docs_dir: notes/ -theme: - name: material - favicon: 'assets/images/java.png' - logo: 'assets/images/java.png' - palette: - scheme: default - primary: white - accent: white - font: - text: Roboto - code: Roboto Mono - language: en - features: - # - header.autohide - - navigation.tabs - # - navigation.instant - icon: - repo: fontawesome/brands/github - -copyright: Copyright © 2020 Arjun Adhikari -repo_url: https://github.com/thearjun/java-notes -repo_name: thearjun/java-notes -edit_uri: "https://github.com/thearjun/java-notes/tree/master/notes/" -markdown_extensions: - - meta - - abbr - - admonition - - pymdownx.details - - attr_list - - pymdownx.highlight: - linenums_style: pymdownx.inline - - pymdownx.superfences - - pymdownx.inlinehilite - - pymdownx.snippets - - pymdownx.keys - - pymdownx.tabbed - - pymdownx.betterem: - smart_enable: all - - pymdownx.caret - - pymdownx.mark - - pymdownx.tilde - - pymdownx.smartsymbols - - def_list - - pymdownx.tasklist: - custom_checkbox: true - - pymdownx.arithmatex: - generic: true -google_analytics: - - UA-123982482-1 - - auto -extra: - generator: false - disqus: thearjun - manifest: manifest.webmanifest - social: - - icon: fontawesome/brands/linkedin - link: https://linkedin.com/in/thearjun - - icon: fontawesome/brands/github - link: https://github.com/thearjun - - icon: fontawesome/solid/envelope - link: mailto:mailarjunadhikari@gmail.com - - icon: fontawesome/solid/user - link: https://www.upwork.com/freelancers/~017a123f27939046d8 - -extra_javascript: - - assets/javascripts/extra.js - - assets/javascripts/config.js - - https://polyfill.io/v3/polyfill.min.js?features=es6 - - https://cdn.jsdelivr.net/npm/mathjax@3/es5/tex-mml-chtml.js -extra_css: - - assets/stylesheets/extra.css - -plugins: - - search - - macros: - include_dir: notes -nav: - - README.md - - Basics: - - introduction/README.md - - Identifiers: introduction/IDENTIFIER.md - - Literals: literals/README.md - - Reserved Words: introduction/ReservedWord.md - - Data Types: introduction/DataTypes.md - - Controls: controlStatements/README.md - - Data Structures: dataStructures/README.md - - Variables: variables/README.md - - Arrays: - - Introduction: array/README.md - - Matrix Representation: array/matrixRepresentation/README.md - - Array Representation 01: array/arrayRepresentation01/README.md - - Array Representation 02: array/arrayRepresentation02/README.md - - Examples: array/extra.md - - Applet: - - Introduction: applet/README.md - - Walk Through: applet/TUTORIAL.md - - Examples: - - General: applet/EXAMPLES.md - - Play Audio: applet/playingAudio/README.md - - Display Image: applet/displayingImage/README.md - - - I/O: - - Introduction: io/README.md - - File: - - Introduction: io/File/README.md - - File CLI App: io/File/CLA/README.md - - FileReader: io/FileReader/README.md - - FileWriter: io/FileWriter/README.md - - BufferedReader: io/BufferedReader/README.md - - BufferedWriter: io/BufferedWriter/README.md - - BufferedWriter: io/BufferedWriter/README.md - - PrintWriter: io/PrintWriter/README.md - - More Examples: io/more-examples/README.md - - Networking: - - Introduction: networking/README.md - - URL: networking/URL/README.md - - InetAddress: networking/InetAddress/README.md - - URLConnection: networking/URLConnection/README.md - - HTTP URL Connection: networking/HTTPURLConnection/README.md - - Check Internet Conneciton: networking/checkInternetConnection/README.md - - WHOIS Implementation: networking/whoisImplementation/README.md - - InetAddress: networking/InetAddress/README.md - - Socket Programming: - - Introduction: networking/SocketProgramming/README.md - - Server to Client Mesaging: networking/ServerToClient/README.md - - Client to Server Mesaging: networking/chatApplication/README.md - - Dual Connection: networking/dualConnection/README.md - - Connection Less: networking/ConnectionLess/README.md - - UDP Messaging: networking/UDPMessaging/README.md - - Exams: - - Programming: exams/examQuestions/ProgrammingQuestions.md - - General: exams/examQuestions/README.md diff --git a/notes/networking/ConnectionLess/Receiver.java b/networking/ConnectionLess/Receiver.java similarity index 100% rename from notes/networking/ConnectionLess/Receiver.java rename to networking/ConnectionLess/Receiver.java diff --git a/notes/networking/ConnectionLess/Sender.java b/networking/ConnectionLess/Sender.java similarity index 100% rename from notes/networking/ConnectionLess/Sender.java rename to networking/ConnectionLess/Sender.java diff --git a/networking/ConnectionLess/index.html b/networking/ConnectionLess/index.html new file mode 100644 index 00000000..7daf8d4f --- /dev/null +++ b/networking/ConnectionLess/index.html @@ -0,0 +1,1638 @@ + + + + + + + + + + + + + + + + + + Connection Less - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
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    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Connection Less

    +
        1. Datagram Socket Class
+    2. Datagram Packet Class
+
    +

    DatagramSocket Class

    +
      +
    • This class represents a connection-less socket for sending and receiving datagram packets.
      • +
    • A datagram is basically an information but there is no guarantee of its content, arrival or arrival time.
      • +
    +

    Constructor

    +
      +
    1. DatagramSocket() throws SocketException;
      2. +
    2. +

      It creates a datagram socket and binds it with the available Port number on Local Machine.

      +
      3. +
    3. +

      DatagramSocket(int port) throws SocketException;

      +
      4. +
    4. +

      It creates a datagram socket and binds it with the given port number.

      +
      5. +
    5. +

      Datagram(int port, InetAddress address) throws SocketException;

      +
      6. +
    6. It binds with the specified port and host address.
      7. +
    +

    DatagramPacket Class

    +
      +
    • DatagramPacket is a message that can be sent or received. If you send multiple packet, it may arrive in any order. Additionally, packet delivery is not guaranteed.
      • +
    +

    Constructor

    +
      +
    1. DatagramPacket(byte[] byteArray, int length)
      2. +
    2. It creates a datagram packet to recieve the packets.
      3. +
    3. DatagramPacket(byte[] byteArray, InetAddress address int length)
      4. +
    4. It is used to send the packets.
      5. +
    +

    Sender Implementation

    +
    import java.io.*;
+import java.net.*;
+
+public class Sender {
+    public static void main(String[] args) throws Exception{
+        DatagramSocket ds = new DatagramSocket(6666);
+        String str = "Welcome Java";
+        InetAddress ip = InetAddress.getByName("127.0.0.1");
+
+        DatagramPacket dp = new DatagramPacket(str.getBytes(), str.length(),ip, 3000);
+
+        ds.send(dp);
+        ds.close();
+    }
+}
+
    +

    Receiver Implementation

    +
    import java.io.IOException;
+import java.net.*;
+
+public class Receiver {
+    public static void main(String[] args) throws IOException{
+
+        DatagramSocket ds = new DatagramSocket(6666);
+
+        byte[] buf = new byte[1024];
+
+        DatagramPacket dp = new DatagramPacket(buf, 1024);
+        ds.receive(dp);
+
+        String str = new String(dp.getData(), 0, dp.getLength());
+        System.out.println(str);
+        ds.close();
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/networking/HTTPURLConnection/HttpURLConnectionDemo.java b/networking/HTTPURLConnection/HttpURLConnectionDemo.java similarity index 100% rename from notes/networking/HTTPURLConnection/HttpURLConnectionDemo.java rename to networking/HTTPURLConnection/HttpURLConnectionDemo.java diff --git a/networking/HTTPURLConnection/index.html b/networking/HTTPURLConnection/index.html new file mode 100644 index 00000000..5c93a511 --- /dev/null +++ b/networking/HTTPURLConnection/index.html @@ -0,0 +1,1503 @@ + + + + + + + + + + + + + + + + + + HTTP URL Connection - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
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    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    HTTP URL Connection

    +

    Implementation

    +
    // Demonstrate HttpURLConnection.
+import java.net.*;
+import java.io.*;
+import java.util.*;
+
+class HttpURLConnectionDemo {
+    public static void main(String args[]) throws Exception {
+        URL hp = new URL("http://www.google.com");
+        HttpURLConnection hpCon = (HttpURLConnection) hp.openConnection();
+
+        // Display request method.
+        System.out.println("Request method is " + hpCon.getRequestMethod());
+
+        // Display response code.
+        System.out.println("Response code is " + hpCon.getResponseCode());
+
+        // Display response message.
+        System.out.println("Response Message is " + hpCon.getResponseMessage());
+
+        // Get a list of the header fields and a set
+        // of the header keys.
+        Map<String, List<String>> hdrMap = hpCon.getHeaderFields();
+        Set<String> hdrField = hdrMap.keySet();
+        System.out.println("\nHere is the header:");
+
+        // Display all header keys and values.
+        for(String k : hdrField) {
+            System.out.println("Key: " + k +
+            " Value: " + hdrMap.get(k));
+        }
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/networking/InetAddress/InetAddressDemo.java b/networking/InetAddress/InetAddressDemo.java similarity index 100% rename from notes/networking/InetAddress/InetAddressDemo.java rename to networking/InetAddress/InetAddressDemo.java diff --git a/networking/InetAddress/index.html b/networking/InetAddress/index.html new file mode 100644 index 00000000..86af720f --- /dev/null +++ b/networking/InetAddress/index.html @@ -0,0 +1,1578 @@ + + + + + + + + + + + + + + + + + + InetAddress - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
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    + + +
    +
    + + + + + + + + +

    InetAddress Class

    +
      +
    • InetAddress represents an IP address.
      • +
    • java.net.InetAddress class provides methods to get the IP of any hostname(eg : facebook.com);
      • +
    +

    Methods

    +
      +
    1. public static InetAddress getByName(String host) throws UnknownHostException
      2. +
    2. public static InetAddress getLocalHost() throws UnknownHostException
      3. +
    3. public static InetAddress getHostName() throws UnknownHostException
      4. +
    4. Rturns hostname of IP Address.
      5. +
    5. public static InetAddress getHostAddress() throws UnknownHostException
      6. +
    6. String toString()
      7. +
    7. Converts IP Address to a String
      8. +
    +

    Implementation

    +
    import java.net.*;
+
+class InetAddressDemo {
+
+    public static void main(String[] args) throws UnknownHostException {
+
+        InetAddress address = InetAddress.getLocalHost();
+        System.out.println("Address : " + address);
+
+        address = InetAddress.getByName("www.thearjun.tech");
+        System.out.println("Address : " + address);
+
+        /*
+         * On the Internet, it is common for a single name to be used to represent
+         * several machines. In the world of web servers, this is one way to provide
+         * some degree of scaling. The getAllByName( ) factory method returns an array
+         * of InetAddresses that represent all of the addresses that a particular name
+         * resolves to. It will also throw an UnknownHostException if it can’t resolve
+         * the name to at least one address.
+         */
+
+        InetAddress[] addresses = InetAddress.getAllByName("www.thearjun.tech");
+        for (int i = 0; i < addresses.length; i++) {
+            System.out.println("Address " + (i + 1) + " : " + addresses[i]);
+        }
+
+        /* Instance Methods */
+
+        System.out.println("Host Name : " + address.getHostName());
+        System.out.println("Host Address : " + address.getHostAddress());
+
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/networking/ServerToClient/Client.java b/networking/ServerToClient/Client.java similarity index 100% rename from notes/networking/ServerToClient/Client.java rename to networking/ServerToClient/Client.java diff --git a/notes/networking/ServerToClient/Server.java b/networking/ServerToClient/Server.java similarity index 100% rename from notes/networking/ServerToClient/Server.java rename to networking/ServerToClient/Server.java diff --git a/networking/ServerToClient/index.html b/networking/ServerToClient/index.html new file mode 100644 index 00000000..78573b34 --- /dev/null +++ b/networking/ServerToClient/index.html @@ -0,0 +1,1528 @@ + + + + + + + + + + + + + + + + + + Server to Client Mesaging - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
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    + + + + + + +
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    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Server to Client Connection

    +

    This example demonstrates the messaging from server to the client.

    +

    Client Side Implementation

    +
    import java.io.*;
+import java.net.*;
+
+class Client {
+    public static void main(String[] args) throws IOException{
+
+        Socket s = new Socket ("localhost",6666);
+
+        DataInputStream dis =  new DataInputStream(s.getInputStream());
+
+        // Typehinting the UTF message into string.
+        String message = (String)dis.readUTF();
+
+        System.out.println("Message from Server : " + message);
+        s.close();
+    }    
+}
+
    +

    Server Side Implementation

    +
    import java.io.*;
+import java.net.*;
+
+class Server {
+    public static void main(String[] args) throws IOException{
+
+        // Step 1: First, server should instatiate ServerSocket object.
+        ServerSocket ss = new ServerSocket(6666);
+
+        // Step 2 : Then, Server object envokes accept() method of ServerSocket class. This waits for client until client creates Socket object.
+        Socket s = ss.accept();
+
+        // This gets the message sent by the client.
+        DataOutputStream dout =  new DataOutputStream(s.getOutputStream());
+
+        dout.writeUTF("Hello Client !");
+        dout.flush();
+        dout.close();
+        ss.close();
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/networking/SocketProgramming/TryWithResources.java b/networking/SocketProgramming/TryWithResources.java similarity index 100% rename from notes/networking/SocketProgramming/TryWithResources.java rename to networking/SocketProgramming/TryWithResources.java diff --git a/networking/SocketProgramming/index.html b/networking/SocketProgramming/index.html new file mode 100644 index 00000000..79a945e1 --- /dev/null +++ b/networking/SocketProgramming/index.html @@ -0,0 +1,1558 @@ + + + + + + + + + + + + + + + + + + Introduction - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
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    + + + + + + + + +

    Socket Programming

    +
      +
    • Java Socket Programming is used for communication between the application running on different machine.
      • +
    • Java Socket Programming support :
      • +
    + + + + + + + + + + + + + + + + + + + + + +
    Connection OrientedConnection-Less
    Classes Used :Classes Used :
    1. Socket1. DatagramSocket
    2. ServerSocket2. DatagramPacket
    +

    Client in socket programming must know : +- IP Adress

    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    Socket ClassServerSocket Class
    This method is used to create a socket.This class is used to create a ServerSocket.
    MethodsMethods
    - public InputStream getInputStream()- public Socket accept()
    - public OutputStream getOutputStream()- public synchronized void close()
    - public synchronized void close()
    +

    Implementation

    +
    import java.net.*;
+import java.io.*;
+
+class TryWithResources {
+    // Use try-with-resources to close a socket.
+    public static void main(String args[]) throws Exception {
+        int c;
+        // Create a socket connected to internic.net, port 43. Manage this
+        // socket with a try-with-resources block.
+        try (Socket s = new Socket("whois.internic.net", 43)) {
+            // Obtain input and output streams.
+            InputStream in = s.getInputStream();
+            OutputStream out = s.getOutputStream();
+            // Construct a request string.
+            String str = (args.length == 0 ? "MHProfessional.com" : args[0]) + "\n";
+            // Convert to bytes.
+            byte buf[] = str.getBytes();
+            // Send request.
+            out.write(buf);
+            // Read and display response.
+            while ((c = in.read()) != -1) {
+                System.out.print((char) c);
+            }
+        }
+        // The socket is now closed.
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/networking/UDPMessaging/UDPClient.java b/networking/UDPMessaging/UDPClient.java similarity index 100% rename from notes/networking/UDPMessaging/UDPClient.java rename to networking/UDPMessaging/UDPClient.java diff --git a/notes/networking/UDPMessaging/UDPServer.java b/networking/UDPMessaging/UDPServer.java similarity index 100% rename from notes/networking/UDPMessaging/UDPServer.java rename to networking/UDPMessaging/UDPServer.java diff --git a/networking/UDPMessaging/index.html b/networking/UDPMessaging/index.html new file mode 100644 index 00000000..fbe66b57 --- /dev/null +++ b/networking/UDPMessaging/index.html @@ -0,0 +1,1549 @@ + + + + + + + + + + + + + + + + + + UDP Messaging - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
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    + + +
    +
    + + + + + + + + +

    UDP Messaging

    +

    Client Side Implementation

    +
    import java.net.*;
+
+public class UDPClient {
+
+    private static final int port = 9999;
+
+    public static void main(String[] args) throws Exception {
+
+        // In client, port number isn't necessary in DatagramSocket.
+        DatagramSocket ds = new DatagramSocket();
+
+        String msg = "Hello Server !";
+
+        // String is needed to be converted to bytes array.
+        byte[] msgByteArray = msg.getBytes();
+
+        // As I'm testing on my own system, I am referring to localhost.
+        InetAddress address = InetAddress.getLocalHost();
+
+        // At sender side, DatagramPacket accepts four parameters while sending :
+        // i. byte array of message
+        // ii. length of byte array
+        // iii. IP address
+        // iv. Port number
+        DatagramPacket dp = new DatagramPacket(msgByteArray, msgByteArray.length, address, port);
+        ds.send(dp);
+
+        ds.close();
+    }
+}
+
    +

    Server Side Implementation

    +
    import java.net.*;
+
+public class UDPServer {
+
+    private static final int port = 9999;
+
+    public static void main(String[] args) throws Exception {
+
+        // In server, port number is essential.
+        DatagramSocket ds = new DatagramSocket(port);
+
+        // We are assigning the message into the empty byte array.
+        byte[] emptybyteArray = new byte[1024];
+
+        // At receiving side, DatagramPacket accepts two parameters only.
+        // i. Empty byte array
+        // ii. Length of empty byte array
+        DatagramPacket dp = new DatagramPacket(emptybyteArray, emptybyteArray.length);
+
+        ds.receive(dp);
+
+        // As the received message is in bytes, we need to convert into String.
+        // Second and third parameter in String constructor limit the message upto the
+        // given length only.
+        String msg = new String(dp.getData(), 0, dp.getLength());
+        System.out.println("Message : " + msg);
+
+        ds.close();
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/networking/URL/URLDemo.java b/networking/URL/URLDemo.java similarity index 100% rename from notes/networking/URL/URLDemo.java rename to networking/URL/URLDemo.java diff --git a/networking/URL/index.html b/networking/URL/index.html new file mode 100644 index 00000000..73291d16 --- /dev/null +++ b/networking/URL/index.html @@ -0,0 +1,1529 @@ + + + + + + + + + + + + + + + + + + URL - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    URL Class

    +

    http://abc.com:8080/test.php

    +

    Constructors

    +
      +
    1. public URl (String protocol, String host, int port, String file)
      2. +
    2. public URl (String protocol, String host, String file)
      3. +
    3. public URl (URL Contex String url)
      4. +
    4. public URl (String url)
      5. +
    +

    Methods

    +
      +
    1. public String getProtocol()
      2. +
    2. public String getHost()
      3. +
    3. public String getPort()
      4. +
    4. public String getFile()
      5. +
    5. public String getQuery() // ?name = "GCES"
      6. +
    +

    Implementation

    +
    import java.net.*;
+
+class URLDemo {
+
+    public static void main(String[] args) throws MalformedURLException {
+
+        URL obj = new URL("http://www.thearjun.tech:80/index.htm");
+        System.out.println("Protocol : " + obj.getProtocol());
+        System.out.println("Hostname : " + obj.getHost());
+        System.out.println("Port : " + obj.getPort());
+        System.out.println("File Hosted : " + obj.getFile());
+        System.out.println("External Form : " + obj.toExternalForm());
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/networking/URLConnection/URLConnectionDemo.java b/networking/URLConnection/URLConnectionDemo.java similarity index 100% rename from notes/networking/URLConnection/URLConnectionDemo.java rename to networking/URLConnection/URLConnectionDemo.java diff --git a/networking/URLConnection/index.html b/networking/URLConnection/index.html new file mode 100644 index 00000000..bf51c8b5 --- /dev/null +++ b/networking/URLConnection/index.html @@ -0,0 +1,1529 @@ + + + + + + + + + + + + + + + + + + URLConnection - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
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    + + + +
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    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    URL Connection

    +

    Implementation

    +
    import java.io.*;
+import java.net.*;
+import java.util.Date;
+
+class URLConnectionDemo {
+
+    public static void main(String[] args) throws MalformedURLException {
+
+        try {
+            URL url = new URL("http://www.internic.net");
+
+            URLConnection urlconn = url.openConnection();
+
+            System.out.println("Content Length : " + urlconn.getContentLength()); // Returns -1 if unavailable.
+
+            long d = urlconn.getDate(); // Returns 0 if unavailable
+            System.out.println("Date : " + d);
+
+            System.out.println("Content Type : " + urlconn.getContentType());
+
+            // get expiration date
+            d = urlconn.getExpiration();
+            if(d==0)
+            System.out.println("No expiration information.");
+            else
+            System.out.println("Expires: " + new Date(d));
+
+            // get last-modified date
+            d = urlconn.getLastModified();
+            if(d==0)
+            System.out.println("No last-modified information.");
+            else
+            System.out.println("Last-Modified: " + new Date(d));  
+
+            // get content length
+            long len = urlconn.getContentLengthLong();
+            if(len == -1)
+            System.out.println("Content length unavailable.");
+            else
+            System.out.println("Content-Length: " + len);
+
+            InputStream is = urlconn.getInputStream(); // Returns an InputStream that is linked to the resource. This
+                                                       // stream can be used to obtain the content of the resource. It
+                                                       // throws IOException.
+
+            int inputChar;
+
+            while ((inputChar = is.read()) != -1) {
+                System.out.print((char) inputChar);
+            }
+
+            is.close();
+        } catch (IOException exc) {
+            exc.printStackTrace();
+        }
+
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/networking/chatApplication/Arjun.java b/networking/chatApplication/Arjun.java similarity index 100% rename from notes/networking/chatApplication/Arjun.java rename to networking/chatApplication/Arjun.java diff --git a/notes/networking/chatApplication/GCESServer.java b/networking/chatApplication/GCESServer.java similarity index 100% rename from notes/networking/chatApplication/GCESServer.java rename to networking/chatApplication/GCESServer.java diff --git a/networking/chatApplication/index.html b/networking/chatApplication/index.html new file mode 100644 index 00000000..670525d9 --- /dev/null +++ b/networking/chatApplication/index.html @@ -0,0 +1,1530 @@ + + + + + + + + + + + + + + + + + + Client to Server Mesaging - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Client to Server Messaging

    +

    This example demonstrates the messaging from client to the server.

    +

    Client Side Implmentation

    +
    import java.net.*;
+import java.io.*;
+
+class Arjun {
+    public static void main(String[] args) throws IOException{
+        /* Let's use port 6666 for example. */
+        Socket s = new Socket("192.168.0.122",6666);
+
+        DataOutputStream dout = new DataOutputStream(s.getOutputStream());
+
+        // Writes the message in UTF Format.
+        dout.writeUTF("Hello, my Name is Arjun. Can I know information about my attendance status ?");
+        dout.flush();
+        dout.close();
+        s.close();
+    }
+}
+
    +

    Server Side Implementation

    +
    import java.io.*;
+import java.net.*;
+
+class GCESServer {
+    public static void main(String[] args) throws IOException {
+
+        // Step 1: First, server should instatiate ServerSocket object.
+        ServerSocket ss = new ServerSocket(6666);
+
+        // Step 2 : Then, Server object envokes accept() method of ServerSocket class.
+        // This waits for client until client creates Socket object.
+        Socket s = ss.accept();
+
+        // This gets the message sent by the client.
+        DataInputStream dis = new DataInputStream(s.getInputStream());
+
+        // Typehinting the UTF message into string.
+        String message = (String) dis.readUTF();
+
+        System.out.println("Message from client : " + message);
+        ss.close();
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/networking/checkInternetConnection/IsInternetAvailable.java b/networking/checkInternetConnection/IsInternetAvailable.java similarity index 100% rename from notes/networking/checkInternetConnection/IsInternetAvailable.java rename to networking/checkInternetConnection/IsInternetAvailable.java diff --git a/networking/checkInternetConnection/index.html b/networking/checkInternetConnection/index.html new file mode 100644 index 00000000..690e1270 --- /dev/null +++ b/networking/checkInternetConnection/index.html @@ -0,0 +1,1495 @@ + + + + + + + + + + + + + + + + + + Check Internet Conneciton - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Check Internet Connection

    +

    Implementation

    +
    /* This program checks whether your device is connected to Internet or not. */
+
+import java.net.InetSocketAddress;
+import java.net.Socket;
+
+/**
+ * @author arjun
+ */
+public class IsInternetAvailable {
+    public static void main(String[] args) {
+        Socket sock = new Socket() ;
+        InetSocketAddress address = new InetSocketAddress("www.thearjun.tech", 80);
+        try{
+            sock.connect(address, 3000);
+            System.out.println("Active Internet Connection");
+            sock.close();
+        }
+        catch(Exception exc) {
+            System.out.println("No Internet Connection");
+        }
+
+    }
+
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/networking/dualConnection/Client.java b/networking/dualConnection/Client.java similarity index 100% rename from notes/networking/dualConnection/Client.java rename to networking/dualConnection/Client.java diff --git a/notes/networking/dualConnection/Server.java b/networking/dualConnection/Server.java similarity index 100% rename from notes/networking/dualConnection/Server.java rename to networking/dualConnection/Server.java diff --git a/networking/dualConnection/index.html b/networking/dualConnection/index.html new file mode 100644 index 00000000..148de477 --- /dev/null +++ b/networking/dualConnection/index.html @@ -0,0 +1,1555 @@ + + + + + + + + + + + + + + + + + + Dual Connection - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Dual Connection

    +

    This example demonstrates the dual connection between the client and the server. +The client sends a number as a payload to the server and server returns the square of that number.

    +

    Client Side Implementation

    +
    import java.io.*;
+import java.net.*;
+
+class Server {
+    public static void main(String[] args) throws IOException{
+
+        // Step 1: First, server should instatiate ServerSocket object.
+        ServerSocket ss = new ServerSocket(6666);
+
+        // Step 2 : Then, Server object envokes accept() method of ServerSocket class. This waits for client until client creates Socket object.
+        Socket s = ss.accept();
+
+        DataInputStream dis =  new DataInputStream(s.getInputStream());
+
+        // Typehinting the UTF message into string.
+        String message = (String)dis.readUTF();
+
+        int num = Integer.valueOf(message);
+
+
+        int snum = num * num;
+
+
+        // This gets the message sent by the client.
+        DataOutputStream dout =  new DataOutputStream(s.getOutputStream());
+
+        dout.writeUTF("" + snum);
+        dout.flush();
+        dout.close();
+        ss.close();
+    }
+}
+
    +

    Server Side Implementation

    +
    import java.io.*;
+import java.net.*;
+
+class Server {
+    public static void main(String[] args) throws IOException{
+
+        // Step 1: First, server should instatiate ServerSocket object.
+        ServerSocket ss = new ServerSocket(6666);
+
+        // Step 2 : Then, Server object envokes accept() method of ServerSocket class. This waits for client until client creates Socket object.
+        Socket s = ss.accept();
+
+        DataInputStream dis =  new DataInputStream(s.getInputStream());
+
+        // Typehinting the UTF message into string.
+        String message = (String)dis.readUTF();
+
+        int num = Integer.valueOf(message);
+
+
+        int snum = num * num;
+
+
+        // This gets the message sent by the client.
+        DataOutputStream dout =  new DataOutputStream(s.getOutputStream());
+
+        dout.writeUTF("" + snum);
+        dout.flush();
+        dout.close();
+        ss.close();
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/networking/index.html b/networking/index.html new file mode 100644 index 00000000..4815f4d9 --- /dev/null +++ b/networking/index.html @@ -0,0 +1,1572 @@ + + + + + + + + + + + + + + + + + + Introduction - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    Network Programming

    +
        1. Socket Programming
+    2. URL Processing
+
    +
      +
    • A Network is a collection of devices that share a common communication protocol and connected with some communication medium.
      • +
    • A protocol defines a set of rules to which all the communicating parties adhere to (agree).
      • +
    • The java.net package was designed with a group of classes and interfaces which not only provide low level but also hight level communication details.
      • +
    • java.net package provides support for the two common network protocols.
      • +
    • TCP (Transmission Control Protocol)
      • +
    • UDP(User Datagram Protocol)
      • +
    • The term network programming refers to writing programs, then execute across multiple devices, in which the devices are all connected to each other using a network.
      • +
    +

    Differences between TCP and UDP

    + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    TRANSMISSION CONTROL PROTOCOL (TCP)USER DATAGRAM PROTOCOL (UDP)
    1. TCP is a connection-oriented protocol. Connection-orientation means that the communicating devices should establish a connection before transmitting data and should close the connection after transmitting the data.1. UDP is the Datagram oriented protocol. This is because there is no overhead for opening a connection, maintaining a connection, and terminating a connection. UDP is efficient for broadcast and multicast type of network transmission.
    2. TCP is reliable as it guarantees delivery of data to the destination router.2. The delivery of data to the destination cannot be guaranteed in UDP.
    3.TCP provides extensive error checking mechanisms. It is because it provides flow control and acknowledgment of data.3. UDP has only the basic error checking mechanism using checksums.
    4. Sequencing of data is a feature of Transmission Control Protocol (TCP). this means that packets arrive in-order at the receiver.4. There is no sequencing of data in UDP. If ordering is required, it has to be managed by the application layer.
    5. TCP is comparatively slower than UDP.5. UDP is faster, simpler and more efficient than TCP.
    6.Retransmission of lost packets is possible in TCP, but not in UDP.6.There is no retransmission of lost packets in User Datagram Protocol (UDP).
    7.TCP has a (20-80) bytes variable length header.7. UDP has a 8 bytes fixed length header.
    8.TCP is heavy-weight.8. UDP is lightweight.
    9.TCP doesn’t supports Broadcasting.9. UDP supports Broadcasting.
    +

    Some Terminologies

    +
      +
    1. +

      IP Address

      +
      - It is a logical address that can be changed. IP Address are 32-bit number (IPv4 format) often represented as a quad of four 8-bit numbers separated by periods.  
+  Eg : ```192.168.0.1```
+
      +
      2. +
    2. +

      Protocol

      +
      - It is a set of rules basically that is followed for communication.  
+Eg: TCP, UDP, FTP, POP, SMTP, HTTP, HTTPS
+
      +
      3. +
    3. +

      Port Number

      +
      - The port number is used to uniquely identify different applications. It acts as a communication end point between applications.
+- The valid port number range from 1 - 65535.
+The ports upto 1023 are reserved for well known services and hence are well-known ports.  
+Eg: 80  for ```HTTP```, 21 for ```FTP```, 22 for ```SSH```
+
      +
      4. +
    4. +

      Socket

      +
      - A socket is a end point between two way communication.
+- It defines a network connection as a Stream from which bytes can be read and similarly bytes can be sent.
+- Java socket can be used to provide both connection-oriented (```TCP```) as well as connectionless (```UDP```).
+
      +
      5. +
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/networking/whoisImplementation/Whois.java b/networking/whoisImplementation/Whois.java similarity index 100% rename from notes/networking/whoisImplementation/Whois.java rename to networking/whoisImplementation/Whois.java diff --git a/networking/whoisImplementation/index.html b/networking/whoisImplementation/index.html new file mode 100644 index 00000000..ebd34e75 --- /dev/null +++ b/networking/whoisImplementation/index.html @@ -0,0 +1,1501 @@ + + + + + + + + + + + + + + + + + + WHOIS Implementation - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
    + + + + +
    + + +
    + +
    + + + + + + + + + +
    +
    + + + +
    +
    +
    + + + + + + +
    +
    +
    + + + +
    +
    +
    + + + +
    +
    +
    + + +
    +
    + + + + + + + + +

    WHOIS Implementation

    +

    Implementation

    +
    import java.net.*;
+import java.io.*;
+
+class Whois {
+    public static void main(String args[]) throws Exception {
+        int c;
+
+        // Create a socket connected to internic.net, port 43.
+        Socket s = new Socket("whois.internic.net", 43);
+
+        // Obtain input and output streams.
+        InputStream in = s.getInputStream();
+        OutputStream out = s.getOutputStream();
+
+        // Construct a request string.
+        String str = (args.length == 0 ? "MHProfessional.com" : args[0]) + "\n";
+
+        // Convert to bytes.
+        byte buf[] = str.getBytes();
+
+        // Send request.
+        out.write(buf);
+
+        // Read and display response.
+        while ((c = in.read()) != -1) {
+            System.out.print((char) c);
+        }
+        s.close();
+    }
+}
+
    + + +
    +
    +
    + +
    + + + +
    +
    +
    +
    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/AWT/CONTROLS.md b/notes/AWT/CONTROLS.md deleted file mode 100644 index efb4eb32..00000000 --- a/notes/AWT/CONTROLS.md +++ /dev/null @@ -1,15 +0,0 @@ -# Adding and Removing Controls ? - -- To include a control in a window, you must add it to the window. -- To do this, you must crate an instance of the desired control and then add it to a Window by calling add (), which is defined by Container class. - -### Syntax -```Component add (Component ComponentRef);``` - -## AWT Controls - -- Once a component has been added it will be automatically visible whenever its parent window is displayed. - -### To remove -- ```void remove(Component ComponentRef);``` -- ```void removeAll();``` \ No newline at end of file diff --git a/notes/AWT/CheckBox/README.md b/notes/AWT/CheckBox/README.md deleted file mode 100644 index 858eac70..00000000 --- a/notes/AWT/CheckBox/README.md +++ /dev/null @@ -1,21 +0,0 @@ -# Checkbox - - A ```Checkbox``` is a control that is used to turn an option on or off. - - It consists of a small box tha can either contain a checkmark or not. - - There is a ```Label``` associated with each check box that describes what option the box represents. - - Can change the state of a ```Checkbox``` by clicking on it. - - ## Constructors: - 1. ```Checkbox() throws HeadlessException``` - 2. ```Checkbox(String str) throws HeadlessException``` - 3. ```Checkbox(String str, boolean on) throws HeadlessException``` - 4. ```Checkbox(String str, boolean on, CheckboxGroup cbGroup) throws HeadlessException``` - 5. ```Checkbox(String str, CheckboxGroup cbGroup, boolean on) throws HeadlessException``` - - - ## Methods - 1. ```boolean getState();``` - 2. ```void setState(boolean on);``` - 3. ```String getLabel();``` - 4. ```void setLabel(String str);``` - - diff --git a/notes/AWT/README.md b/notes/AWT/README.md deleted file mode 100644 index 298313d3..00000000 --- a/notes/AWT/README.md +++ /dev/null @@ -1,41 +0,0 @@ -# Event, Event Handling & AWT/Swing - -Also called ```javafx JFx``` - -## AWT ( abstract window toolkit) -- AWT contains large numbers of classes and methods that allows you to create and manage graphical user interface(GUI) such as windows, buttons, scrollbars,textblocks ,etc. -- The awt was designed to provide a common set of tools for GUI design that could work on a variety of platforms. -- The tools provided by the awt are implemented using each platforms native GUI toolkit, hence preserving the look and feel of each platform. It is an advantage of awt. But the disadvantage of such an approach is that GUI designed on one platform may look different when displayed on another platform. -- Awt is the foundation upon which swing is made. - -## AWT Hierarchy -![Awt Hierarchy](https://beginnersbook.com/wp-content/uploads/2015/06/awt_hierarchy.png) - -### Component -- The component is an abstract class that encapsulates all the attributes of a visual Components. -- Except for menus, all user interface elements that are displayed on the screen and that interact with the user of subclasses of Component. -- A Component object is responsible for remembering the current foreground and background colors and the currently selected text font. - -### Container -- The Container class is a subclass of Component class. -- It has additional methods that allow other Component objects to be nested within it. -- Other Container objects can be stored inside a Container(Since they are themselves an instance of Component). -- This makes for a multilevel containment system. -- A Container is responsible for laying out i.e. positioning any components that it contains. It does thus throw the use of various layout manager. - -### Panel -- The panel is the Container that does not contain a title bar, menu bars, border. -- It can have other components like button text field, etc. The panel is the superclass for the applet. -- This is why you don't see title bar, menu bar or border when an applet is run inside a browser. When you run an applet using an applet viewer, the applet viewer provides the title and border. -- Other components can be added to a Panel objects by its add() method. Once this components have been added, you can position and resize them manually using the setLocation(), setSize(), setBounds(), etc. - -### Window -- The Window is the Container that has no borders and menu bars. -- The Window class creates a top level window. -- A top level window is not contained within any other object. Generally, you won't create a Window object directly. Instead, you will use a subclass of Window called Frame. - -### Frame -- The frame has a title bar, menu bar, borders and resizing corners. -- The precise look of a frame will differ from the environment. -- The frame is a Container that contains several different components like button, title, text field, label etc. -- In Java, most of the awt application is created using the frame window. \ No newline at end of file diff --git a/notes/AWT/button/README.md b/notes/AWT/button/README.md deleted file mode 100644 index bfdfb39b..00000000 --- a/notes/AWT/button/README.md +++ /dev/null @@ -1,18 +0,0 @@ -# Button - - The most widely used control is the push button. A push button is a ```Component``` that contains a label and that generates an event when it is pressed. Push buttons are objects of type button. ```Button``` defines these two constructors: - - ## Constructors - 1. ```public Button()``` - 2. ```public Button(String buttonLabel) throws headless Exception;``` - - ## Public Methods - 1. ```public String getLabel();``` - - Get the label of this button instance. - - 2. ```public void setLabel(String btnlabel);``` - - Set the label of this button instance. - - 3. ```public void setEnable(boolean enable);``` - - Enable or disable this Button. Disabled Button cannot be clicked. - - diff --git a/notes/AWT/checkBoxGroup/README.md b/notes/AWT/checkBoxGroup/README.md deleted file mode 100644 index 40fd8092..00000000 --- a/notes/AWT/checkBoxGroup/README.md +++ /dev/null @@ -1,11 +0,0 @@ -# CheckboxGroup - - It is possible to create a set if mutually exclusive check boxes in which one and only one checkbox in the group can be checked at any one time. - - Also known as **radio button**. - -## Constructors - ```CheckboxGroup();``` - -## Methods - 1. ```Checkbox getSelectedCheckbox();``` - 2. ```void setSelectedCheckbox(Checkbox which);``` - diff --git a/notes/AWT/choice/README.md b/notes/AWT/choice/README.md deleted file mode 100644 index e2edbc55..00000000 --- a/notes/AWT/choice/README.md +++ /dev/null @@ -1,16 +0,0 @@ -# Choice -> Same as Select in HTML - - The ```Choice``` class is used to create a pop-up list of items from which user may choose. - - **Only one item can be chosen**. - - ## Constructors: - ```Choice();``` - - ## Methods: - 1. ```void add(String name);``` - 2. ```String getSelectedItem();``` - 3. ```int getSelectedIndex();``` - 4. ```int getItemCount();``` - 5. ```void select(String name);``` - 6. ```String getItem(int index);``` - diff --git a/notes/AWT/frame/closeAbleFrame/README.md b/notes/AWT/frame/closeAbleFrame/README.md deleted file mode 100644 index bf475db0..00000000 --- a/notes/AWT/frame/closeAbleFrame/README.md +++ /dev/null @@ -1,6 +0,0 @@ -# Closeable Frame - -- It is possible to implement the close button of any frame orwindow in java application. -- By default, the close button of the frame is not in working state. -- The close button of the frame has to be set for the closing operation. - diff --git a/notes/AWT/label/README.md b/notes/AWT/label/README.md deleted file mode 100644 index 8f93f3d6..00000000 --- a/notes/AWT/label/README.md +++ /dev/null @@ -1,20 +0,0 @@ -# Labels -- Labels are passive controls that do not support any interaction with the user i.e. no event handling. -- A label is an object of type ```Label``` and it contains a String, which it displays. -- Label defines the following constructors: -i. ```Label() throws HeadLessException``` -ii. ```Label(String str) throws HeadLessException``` // The string is left justified. -iii. ```Label(String str, int how) throws HeadLessException``` // label.LEFT, label.RIGHT - -### 👉Methods -i. ```void setText(String str);``` -ii. ```String getText();``` -iii. ```void setAlignment(int how);``` -iv. ```int getAlignment();``` - -### Example - - Label name = new Label("Arjun"); - name.setText("Another Arjun"); - String myNameWas = name.getText(); - diff --git a/notes/AWT/layout/GridBagLayout/README.md b/notes/AWT/layout/GridBagLayout/README.md deleted file mode 100644 index 41afa175..00000000 --- a/notes/AWT/layout/GridBagLayout/README.md +++ /dev/null @@ -1,13 +0,0 @@ -# GridBag Layout - -- A flexible layout manager that arranges components in a grid with a variable sized cells. -- The ```GridBagLayout``` class is flexible Layout manager that aligns components vertically and horizontally and the components of different size. -- Each ```GridBagLayout``` object maintains a dynamic, rectangular grid of cells. -- Each Component is managed by a ```GridBagLayout``` is associated with an instance of ```GridBagConstraints```. -- We use to set constraints : - - void setConstraints(Component c, GridBagConstraints cons); - -## Constructor - - 1.```GridBagLayout();``` \ No newline at end of file diff --git a/notes/AWT/layout/GridLayout/README.md b/notes/AWT/layout/GridLayout/README.md deleted file mode 100644 index 84c200a8..00000000 --- a/notes/AWT/layout/GridLayout/README.md +++ /dev/null @@ -1,9 +0,0 @@ -# Grid Layout - -- A container using the GridLayout scheme arranges components in rows and colums in row major order. Each component is sized to fit its respective grid cell. - -## Constructors - -a. ```GridLayout()``` -b. ```GridLayout(int rows, int cols)``` -c. ```GridLayout(int rows, int cols, int hgap, int vgap)``` \ No newline at end of file diff --git a/notes/AWT/layout/README.md b/notes/AWT/layout/README.md deleted file mode 100644 index 928c551f..00000000 --- a/notes/AWT/layout/README.md +++ /dev/null @@ -1,19 +0,0 @@ -# LayoutManager - - ```LayoutManager``` are provided to arrange GUI components on a container for presentation purpose. - - Each ```Container``` object has a ```LayoutManager``` interface. - - A layout Manager is an instance of any class that implements the ```LayoutManager``` interface - - The layout manager is set by the ```setLayout()``` method. - - If no call is ```setLayout()``` is made, then the default layout manager is used that is ```FlowLayout```. - - - - ## Types of LayoutManager - 1. ```FlowLayout``` - 2. ```BorderLayout``` - 3. ```GridLayout``` - 4. ```CardLayout``` - 5. ```GridBagLayout``` - - ### Two ways to create a ```Frame``` in AWT : - 1. By extending ```Frame``` Class. (Inheritance) - 2. By creating the object of ```Frame``` class. (Association) \ No newline at end of file diff --git a/notes/AWT/layout/borderLayout/README.md b/notes/AWT/layout/borderLayout/README.md deleted file mode 100644 index 45c828d7..00000000 --- a/notes/AWT/layout/borderLayout/README.md +++ /dev/null @@ -1,11 +0,0 @@ -# Border Layout - -- The BorderLayout manager arranges components within specified regions of container. -- Valid regions are : "North", "South", "East", "West" & "Center". - -## Constructor - -- ```BorderLayout()``` -- ```BorderLayout(int hgap, int vgap)``` - Eg: ```add(new Button("North"), BorderLayout.WEST)``` - ```add("North", new Button("West") )``` \ No newline at end of file diff --git a/notes/AWT/layout/cardLayout/README.md b/notes/AWT/layout/cardLayout/README.md deleted file mode 100644 index 0534a851..00000000 --- a/notes/AWT/layout/cardLayout/README.md +++ /dev/null @@ -1,15 +0,0 @@ -# Card Layout - -- Makes each component as large as the container and diplays only one at a time. - -## Constructors -1. ```CardLayout ()``` -2. ```CardLayout (int hgap, int vgap)``` - -## Methods - -1. ```void first (Container deck)``` -2. ```void last (Container deck)``` -3. ```void next (Container deck)``` -4. ```void previous (Container deck)``` -5. ```void show (Container deck, String cardName)``` \ No newline at end of file diff --git a/notes/AWT/layout/flowLayout/README.md b/notes/AWT/layout/flowLayout/README.md deleted file mode 100644 index 91480205..00000000 --- a/notes/AWT/layout/flowLayout/README.md +++ /dev/null @@ -1,10 +0,0 @@ -# FlowLayout - - Arranges components like words on a page - From left to right in rows and then top to bottom as each row fills up. - - ## Constructors - 1. ```FlowLayout()``` - 2. ```FlowLayout(int align)``` - 3. ```FlowLayout(int align, int hgape, int vgape)``` - - ## FlowLayout Alignments -```FlowLayout.LEFT, FlowLayout.RIGHT, FlowLayout.CENTER``` diff --git a/notes/AWT/list/README.md b/notes/AWT/list/README.md deleted file mode 100644 index f6d9c9bc..00000000 --- a/notes/AWT/list/README.md +++ /dev/null @@ -1,21 +0,0 @@ -# List - - The ``` List``` class provides a compact, multiple-choice scrolling selection list. - - ## Constructors - 1. ``` List() throws HeadlessException``` - 2. ``` List(int numRows) throws HeadlessException``` - 3. ``` List( int numRows, boolean multipleSelect) throws HeadlessException``` ->numRows number of rows will be visible, if false, then only one item may be selected. - - ## Methods - 1. ``` void add(String name);``` - 2. ``` void add(String name , int index);``` - 3. ``` String getSelectedItem()``` - - for single selection - 5. ``` int getSelectedIndex()``` - 6. ``` String[] getSelectedItems()``` - - for multiple selection - 8. ``` int[] getSelectedIndexes()``` - 9. ``` int getItemCount();``` - 10. ``` void select(int index);``` - diff --git a/notes/AWT/scrollBar/README.md b/notes/AWT/scrollBar/README.md deleted file mode 100644 index a2e61912..00000000 --- a/notes/AWT/scrollBar/README.md +++ /dev/null @@ -1,23 +0,0 @@ -# Scrollbar - - ```Scrollbar``` is used to select continuous values between a specified minimum and maximum. - - May be oriented horizontally or vertically. - - It contain slider box that can be dragged by the uset to a new position. - - # Constructors - 1. ```Scrollbar() throws HeadlessException``` - 2. ```Scrollbar(int style) throws HeadlessException``` -- Style includes ```Scrollbar.VERTICAL``` and ```Scrollbar.HORIZONTAL```. - -3. ```Scrollbar(int style, int thumbSize, int min, int max) throws HeadlessException``` - - # Methods: - 1. ```void setValues(int initialValue, int thumbSize, int min, int max);``` - 2. ```int getValue()``` - 3. ```void setValue(int newValue)``` - 4. ```int getMinimum()``` - 5. ```int getMaximum()``` - - - - - diff --git a/notes/AWT/textArea/README.md b/notes/AWT/textArea/README.md deleted file mode 100644 index 7ef6603f..00000000 --- a/notes/AWT/textArea/README.md +++ /dev/null @@ -1,38 +0,0 @@ -# TextArea - > Sub class of ```TextComponent``` - - - Sometimes a single line of text input is not enough for a given task. To handle this situation, the awt includes a simple multiline editor called ```TextArea```. - - ## Constructors - 1. ```TextArea() throws HeadlessException``` - 2. ```TextArea(int numLines, int numChars) throws HeadlessException``` - 3. ```TextArea(String str) throws HeadlessException``` - 4. ```TextArea(Stirng str, int numLines, numChars) throws HeadlessException``` - 5. ```TextArea(String str, int numLines,int numChars, int sBars) throws HeadlessException``` - - > Here, numLines represents rows and numChars represents number of columns. sBars is Scroll Bar to use scrollbar in the TextArea. - - ```SCROLLBARS_BOTH, SCROLLBARS_NONE, SCROLLBARS_HORIZONTAL_ONLY, SCROLLBARS_VERTICAL_ONLY``` - - Public Methods: - 1. ```String getText()``` - 2. ```void setText()``` - 3. ```String getSelectedText()``` - 4. ```void select(int startIndex, int endIndex)``` - 5. ```boolean isEditable()``` - 6. ```void setEditable( boolean canEdit)``` - -> These methods are defined by ```TextComponent``` -> ```TextComponent``` class is the superclass of ```TextField``` and ```TextArea``` -> So, both ```TextField ```and ```TextArea``` can use these methods. - - TextArea adds the following editing methods: - 1. ```void append(String str)``` - - The ```append()``` method appends the strings specified by str to the end of the current text. - - 2. ```void insert(String str , int index)``` - - ```insert()``` method inserts the string passed in str at the specified index. - - 3. ```void replaceRange(String sr, int startIndex , int endIndex)``` - - To replace text, ```replaceRange()``` replaces the characters from startIndex to endIndex-1, with the replacement text passed in str. - diff --git a/notes/AWT/textField/README.md b/notes/AWT/textField/README.md deleted file mode 100644 index 2d829b29..00000000 --- a/notes/AWT/textField/README.md +++ /dev/null @@ -1,41 +0,0 @@ -# TextField - The ```TextField``` class implements a single line text entry area ususally called an edit control. - - ```TextField``` allow the user to enter strings and to edit the text using the arrow keys, cut and paste keys and mouse selection. - - ## Constructors - 1. ```public TextField(String initialText, int columns)``` - - Construct a TextField instance with the given initial text string with the number of column - - 2. ```public TextField(String strText);``` - - Set the text display text on this TextField instance - - 3. ```public TextField(int columns);``` - - Construct s TextField instance with number of columns - - ## Public Methods - 1. ```boolean isEditable()``` - - 2. ```public String getText();``` - - Get the current text on this TextField instance - - 3. ```public void setText(String strText)``` - - Set this display text on this TextField instance - - 4. ```public void setEditable(boolean editable);``` - - Set the TextField to editable (read/ write) or non editable (read- only) - - 5. ```void setEchoChar(char ch)``` - - Change the content of generally password into - OR - there may be times when you will want the user to enter text that is not displayed, such as a password. You can disable the echoing of the characters as they are typed by calling this method. - - If ch is 0, then normal echoing is restored. - ```TextField password = new TextField();``` - ```password.setEchoChar("*")``` - - 6. ```boolean echoCharIsSet();``` - - Return ture or false whether the TextField is set with some char - - 7. ```char getEchoChar();``` - - Return the character which was set in the TextField. - diff --git a/notes/JDBC/DIFFERENCES.md b/notes/JDBC/DIFFERENCES.md deleted file mode 100644 index 14aa9e2e..00000000 --- a/notes/JDBC/DIFFERENCES.md +++ /dev/null @@ -1,16 +0,0 @@ -# Difference between ODBC and JDBC - -## **ODBC** -> 1992, Open Database Connectivity - -- Developed by Microsoft -- Support any language -- Only for Windows machine -- Support any database - -## **JDBC** -> 1997, Java Database Connectivity -- Support any database -- Support any platform -- Only for Java language -- Developed by Sun Microsystems. \ No newline at end of file diff --git a/notes/JDBC/DifferencesBetweenStatementAndPS.md b/notes/JDBC/DifferencesBetweenStatementAndPS.md deleted file mode 100644 index aef8afd2..00000000 --- a/notes/JDBC/DifferencesBetweenStatementAndPS.md +++ /dev/null @@ -1,12 +0,0 @@ -# Difference between Statement and Prepared Statement - -| Statement | Prepared Statement | -|-----------|--------------------| -| At the time of creating Statement object, we are not required to provide any query | At the time of creating Prepared Object, we have to provide SQL Query compulsary which can be send to the database and will be compiled. | -| ```Statemnt st = con.createStatement();``` | ```PreparedStatement pst = con.prepareStatement(query);``` | -| Hence, Statement object is not associated with any query and we can use for multiple queries. | Hence, Prepared Statement is associated with any query. | -| Whenever, we are using execute method, everytime query will be compiled. | Whenever, we are using execute method, query won't be compiled every time. | -| Statement object can work only for static queries. | Work for Static and Dynamic Queries | -| Relatively, performance is low. | Relatively, performance is high. | -| Chance of SQL Injection | No Chance of SQL Injection | -| Inserting data value and large object is difficult. | Insering data value and large object is easy. | \ No newline at end of file diff --git a/notes/JDBC/FEATURES.md b/notes/JDBC/FEATURES.md deleted file mode 100644 index 1aed5e60..00000000 --- a/notes/JDBC/FEATURES.md +++ /dev/null @@ -1,7 +0,0 @@ -# JDBC Features - -1. Standard **API** (Same for all DBMS) -2. Database Management API -3. Most of the **JDBC** driver are developed using Java, so they are platform independent. -4. Huge vendor support for **JDBC**. -5. Perform basic **CRUD** (Create, Read, Update & Delete) operation very easily. \ No newline at end of file diff --git a/notes/JDBC/JDBCDriver.md b/notes/JDBC/JDBCDriver.md deleted file mode 100644 index 76579f3a..00000000 --- a/notes/JDBC/JDBCDriver.md +++ /dev/null @@ -1,47 +0,0 @@ -# JDBC Driver - -- While communicating with database, we have to connect java calls into database specific calls and database specific calls into java cells. For this Driver software is required. -- As per our analogy, driver software is a translator. - -> Progress Direct Software Company introduced Type-5 driver but is not industry standard driver. - -## Types of JDBC Driver -1. Type 1 Driver (JDBC-ODBC Bridge Driver) -2. Type 2 Driver (Native API-Partly Driver or Native Driver) -3. Type 3 Driver (All Java Net Protocol Driver or Network Protocol Driver or Middleware Driver) -4. Type 4 Driver (Pure Java Driver or Native Protocol or Thin Driver) - -### Type 1 Driver -> ODBC Supports all programming languages. - -![Driver 1](https://way2java.com/wp-content/uploads/2013/11/image6.png) - -### Type 2 Driver -> Written in C, C++ - -![Driver 2](https://2.bp.blogspot.com/-nvGkcCjx-tA/U-mmHyr2B5I/AAAAAAAACgg/rUIumINbfRU/s1600/Type+2+JDBC+Driver+-++Native-API+driver.jpg) - -### Type 3 Driver ->Three tiers - -![Driver 3](https://upload.wikimedia.org/wikipedia/commons/thumb/e/e0/Network_Protocol_driver.png/300px-Network_Protocol_driver.png) - -### Type 4 Driver - -![Driver 4](https://www.javaken.com/java_images/jdbc_type4_driver.jpg) - -## Thick vs Thin Driver - -> See in copy. - -## Comparision - -| Property | Type 1 | Type 2 | Type 3 | Type 4 | -|-----------|--------|-------|---------|--------| -| Conversion | From JDBC Calls to ODBC Call | From JDBC Calls to Native Library Call | From JDBC Calls to Middleware Server Call | From JDBC Calls to Database specific Call | -| Implemented In | Only Java | Java and Native Langiages like C, C++ | Only Java | Only Java | -| Architecture | 2 Tier | 2 Tier | 3 Tier | 2 Tier | -| Platform Independent | No | No | Yes | Yes | -| Database Independent | Yes | No | Yes | No | -| Thick or Thin | Thick | Thick | Thick | Thin | -| Also Known As | JDBC-ODBC Bridge Driver | Native API-Partly Driver or Native Driver | All Java Net Protocol Driver or Network Protocol Driver or Middleware Driver | Pure Java Driver or Native Protocol or Thin Driver | \ No newline at end of file diff --git a/notes/JDBC/README.md b/notes/JDBC/README.md deleted file mode 100644 index d11d6053..00000000 --- a/notes/JDBC/README.md +++ /dev/null @@ -1,4 +0,0 @@ -# Java Database Connetivity (JDBC) - -- JDBC is a speification (Guidelines) defined by Java vendor and implemented by Database vendor. -- Database vendor provided implementation is called Driver Software. \ No newline at end of file diff --git a/notes/JDBC/SQLInjection.md b/notes/JDBC/SQLInjection.md deleted file mode 100644 index dc83bb6d..00000000 --- a/notes/JDBC/SQLInjection.md +++ /dev/null @@ -1,5 +0,0 @@ -# SQL Injection - -- SQL Injection is a code injection technique that might destory your database. -- SQL Injection usually occurs when you ask a user for input, like their username and instead of username, the user gives you an SQL statement that you will unknowingly run on your database. -- SQL Injection can be prevented by using prepared statement. \ No newline at end of file diff --git a/notes/JDBC/StepsToDevelopJDBCApplication.md b/notes/JDBC/StepsToDevelopJDBCApplication.md deleted file mode 100644 index e7babcca..00000000 --- a/notes/JDBC/StepsToDevelopJDBCApplication.md +++ /dev/null @@ -1,22 +0,0 @@ -# Steps to Develop JDBC Application - -![Steps](https://www.javatpoint.com/java/new/images/java-database-connectivity-steps.jpg) - -1. Load and Register driver class. -```Class.forName("Oracle.jdbc.OracleDriver");``` - -2. Establish Conection -```Connection con = Driver.Manager.getConnection( url , DbUsername , DbPassword ) ;``` -3. Creation of statement Object - ``` Statement st = con.createStatement(); ``` -4. Send and Execute SQL Query - ``` Result rs = st.executeQuery("Select * from employees");``` -5. Process Result from ResultSet - - while(rs.next()) - { - System.out.Println(rs.getInt(1)); - } - -6. Close connection - ```con.close();``` diff --git a/notes/JDBC/TypesOfSQLCommands.md b/notes/JDBC/TypesOfSQLCommands.md deleted file mode 100644 index 7592b6ac..00000000 --- a/notes/JDBC/TypesOfSQLCommands.md +++ /dev/null @@ -1,64 +0,0 @@ -# Types of SQL Commands - -1. **DDL**(Data Definition Language) -```CREATE TABLE, ALTER, DROP``` -2. **DQL**(Data Query Language) -```SELECT``` -3. **DCL**(Data Control Language) -```ALTER, PASSWORD, GRANT ACCESS``` -4. **DML**(Data Manipulation Language) -```INSERT, DELETE, UPDATE``` -5. (Data Administration) -```START AUDIT``` -6. (Data Transaction) -```COMMIT, ROLLBACK, SAVEPOINT``` - -## What should I know as Java Developer ? - -### Select Queries(**DQL**) -> Returns Result Set - -### Non-Select Queries(**DML**) -> Returns Numeric Value - -## Methods to Execute **SQL** Query -1. ```executeQuery()``` -- To execute ```SELECT``` queries. - - public result executeQuery(String sqlQuery) throws SQLException -Eg: - - Result rs = st.executeQuery("SELECT * FROM employess"); - while(rs.next()){ - System.out.println(" ID : " rs.getInt(1)); - } - -2. ```executeUpdate()``` -- Applicable for non-select operation(DML) -```public int executeUpdate(String sqlQuery) throws SQLException``` - -Eg: - - int affectedRow = st.executeUpdate("INSERT INTO employees(`id`) VALUES ('1')"); -Returns the afftected rows. - -3. ```execute()``` -- For both ```SELECT``` and NON-```SELECT``` operations. -- If you don't know ```SQL``` query until run-time, we can use execute(). -- Return type => ```boolean``` - -> True - ```SELECT``` Query - -> false - Non-```SELECT``` Query - ```public boolean execute (String query) throws SQLException``` - - Eg: - - boolean b = st.execute(Dynamically provide SQLQuery); - if(b == true) { - ResultSet rs = st.getResultSet(); - } - else - { - int rowCount = st.getUpdateCount(); - } - - diff --git a/notes/README.md b/notes/README.md deleted file mode 100644 index c79480a7..00000000 --- a/notes/README.md +++ /dev/null @@ -1,14 +0,0 @@ - - - -# Java Notes -![Java Icon](https://i.ibb.co/RCn3qQv/1387539.png) - -> ✍ **Arjun Adhikari**, Django & Python Developer - -[![BCH compliance](https://bettercodehub.com/edge/badge/theArjun/Java?branch=master)](https://bettercodehub.com/) - - -Java is a general-purpose computer-programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible. - -This note is prepared focusing the syllabus of Pokhara University with the guidance of **Lecturer Nishal Gurung**. diff --git a/notes/applet/EXAMPLES.md b/notes/applet/EXAMPLES.md deleted file mode 100644 index fd503e51..00000000 --- a/notes/applet/EXAMPLES.md +++ /dev/null @@ -1,36 +0,0 @@ ---- -title: Examples on Applet -description: More examples on Applet. ---- - -#### Passing Parameter -- Demonstrate the passing of parameters in Applet File. -##### HTML File -```html -{% include 'applet/passingParameter/ParamDemo.html' %} -``` -##### Java File -```java -{% include 'applet/passingParameter/ParamDemo.java' %} -``` - - - -#### Display Available Fonts -- Display the available fonts in the system. -```java -{% include 'applet/general/AvailableFonts.java' %} -``` - -#### Custom Font and Size -- Demonstrating applet with custom font text and size. -```java -{% include 'applet/passingParameter/customFontAndSize/CustomFont.java' %} -``` - - -#### Draw Nepali Flag -- Draw the Nepali Flag using the Applet and graphics. -```java -{% include 'applet/nepaliFlag/Flag.java' %} -``` diff --git a/notes/applet/README.md b/notes/applet/README.md deleted file mode 100644 index 09fc7d0e..00000000 --- a/notes/applet/README.md +++ /dev/null @@ -1,104 +0,0 @@ -# Applet Programming - -- An applet is a Java program that runs in a web browser. -- An applet is a Java class that extends the ```java.applet.Applet```. -- No ```main()``` method -- Applet was designed to be embedded with a HTML page. -- JVM is required to view an applet. -- Applet have strict security rules that are enforced by the web browser. - -## Two types of Applet - -1. Based on Applet class - - These Applets use the Abstract Window Toolkit (```AWT```) to provide the graphical user interface (GUI). - - The style of applet has been available since Java was first created. -2. Based on ```JApplet``` class - - They are based on the Swing class ```JApplet``` which inherits Applet. - - Swing applet use the swing classes to provide the GUI. - -## Life Cycle of Applet - -![Life Cycle of Applet](http://www.startertutorials.com/corejava/wp-content/uploads/2016/02/applet-life-cycle.png) - -## Applet Initialization and Termination -- When an applet begins ,the following methods are called in this sequence : -1. ```init()``` -2. ```start()``` -3. ```paint()``` -Whenever an applet is terminated, the following sequence of methods calls takes place. -4. ```stop()``` -5. ```destroy()``` - -### Description : - -1. ```init()``` -- The ```init( )``` method is the first method to be called. This is where you should initialize variables. This method is called only once during the run time of your applet. - -2. ```start()``` -- The ```start( )``` method is called after ```init( )```. It is also called to restart an applet after it has been stopped. Whereas ```init( )``` is called once—the first time an applet is loaded—```start( )``` is called each time an applet’s HTML document is displayed onscreen. So, if a user leaves a web page and comes back, the applet resumes execution at ```start( )```. - -3. ```paint()``` -- The ```paint( )``` method is called each time an AWT-based applet’s output must be redrawn. This situation can occur for several reasons. Whatever the applet must redraw its output, ```paint( )``` method is called. The ```paint( )``` method has one parameter of type Graphics. - -4. ```stop()``` -- The ```stop( )``` method is called when a web browser leaves the HTML document containing the applet—when it goes to another page, for example. When ```stop( )``` is called, the applet is probably running. You should use ```stop( )``` to suspend threads that don’t need to run when the applet is not visible. You can restart them when ```start( )``` is called if the user returns to the page. - -5. ```destroy()``` -- The ```destroy( )``` method is called when the environment determines that your applet needs to be removed completely from memory. At this point, you should free up any resources the applet may be using. The ```stop( )``` method is always called before ```destroy( )```. - -## The HTML APPLET Tag - -Syntax : - - - - [< PARAM NAME = attributeName VALUE = AttributeValue>] >> Important for Exam 💯 - [HTML Displayed in the absence of Java] - - - -Note : [ ] ⏩ Optional - -### **CODEBASE** -- It is an optional attribute that specifies the base URL of the applet code, which is the directory that will be searched for the applets executable class file. -- The HTML Document URL Directory is used as the CODEBASE if this attribute is not specified. - -### **CODE** -- Code is the required attribute that gives the name of file containing compiled .class file. This file is related to the code base URL of the applet. - -### **ALT** -- The ALT tag is an alternate tag used to specify a short text message that should be displayed if the browser recognized the applet tag but can't currently run JAVA applet. - -### **NAME** -- NAME is an optional attribute used to specify a name for the applet instance. NAME attribute is used in order to communicate between applets on the same page. - -### **WIDTH and HEIGHT** -- WIDTH and HEIGHT are the required attributes that gives the size of the applet display area. - -### **ALIGN** -- ALIGN is an optional attribute that specifies the alignment of the applet. The possible values are LEFT, RIGHT, TOP, BOTTOM, MIDDLE, BASELINE, TEXTTOP, ABSMIDDLE (Absolute Middle) and ABSBOTTOM (Absolute Bottom). - -### **VSPACE and HSPACE** -- These attributes are optional. -- VSPACE specifies the space in pixel and below the applet. -- HSPACE specifies the space in pixel on each sides of the applet. - -### **PARAM NAME and VALUE** -- PARAMNAME is a tag used to specify applet specific arguments. -- Applets access their attributes with the ```getParameter( )``` - - -#### Life Cycle of Applet -```java -{% include 'applet/lifeCycle/LifeCycle.java' %} -``` diff --git a/notes/applet/TUTORIAL.md b/notes/applet/TUTORIAL.md deleted file mode 100644 index 35f91f08..00000000 --- a/notes/applet/TUTORIAL.md +++ /dev/null @@ -1,51 +0,0 @@ -# How to run an Applet? - -There are two ways to run an applet : - -1. By HTML file. -2. By appletViewer tool (for testing purpose). - -## Simple example of Applet by HTML file: - -To execute the applet by HTML file, create an applet and compile it. After that create an html file and place the applet code in HTML file. Now click the HTML file. - - //HelloApplet.java - import java.applet.Applet; - import java.awt.Graphics; - public class HelloApplet extends Applet{ - public void paint(Graphics g){ - g.drawString("welcome",150,150); - } - - } - ->Note: - -Class must be public because its object is created by Java Plugin software that resides on the browser. -HelloApplet.html - - - Applet's Demonstration - - - - - - -## Simple example of Applet by appletviewer tool: - -To execute the applet by appletviewer tool, create an applet that contains applet tag in comment and compile it. After that run it by: appletviewer HelloApplet.java. Now HTML file is not required but it is for testing purpose only. - - //HelloApplet.java - import java.applet.Applet; - import java.awt.Graphics; - public class HelloApplet extends Applet{ - public void paint(Graphics g){ - g.drawString("welcome to applet",150,150); - } - } - -To execute the applet by appletviewer tool, write in command prompt: - - c:\>javac HelloApplet.java - c:\>appletviewer HelloApplet.java diff --git a/notes/applet/displayingImage/README.md b/notes/applet/displayingImage/README.md deleted file mode 100644 index 568954a2..00000000 --- a/notes/applet/displayingImage/README.md +++ /dev/null @@ -1,10 +0,0 @@ -# Displying Image in Applet - - Java will allow the applet to load the data holding the HTML file that started the applet (theDocumentBase) and the directory from which class file was loaded (codeBase). Both documentBase and codeBase return directories as URL object respectively. - - -## Code -- We've assumed there is an image named `blue.jpg`. -```java -{% include 'applet/displayingImage/DisplayImage.java' %} -``` diff --git a/notes/applet/playingAudio/README.md b/notes/applet/playingAudio/README.md deleted file mode 100644 index cd648a1c..00000000 --- a/notes/applet/playingAudio/README.md +++ /dev/null @@ -1,13 +0,0 @@ -# Playing Audio in Applet - -An applet can play an audio file represented by the AudioClip interface in the java.applet package. The AudioClip interface has three methods, including : -```public void play()``` − Plays the audio clip one time, from the beginning. -```public void loop()``` − Causes the audio clip to replay continually. -```public void stop()``` − Stops playing the audio clip. -To obtain an AudioClip object, you must invoke the getAudioClip() method of the Applet class. The getAudioClip() method returns immediately, whether or not the URL resolves to an actual audio file. The audio file is not downloaded until an attempt is made to play the audio clip. - -## Code -- We've assumed there is an audio clip named `sample.wav`. -```java -{% include 'applet/playingAudio/PlayAudio.java' %} -``` diff --git a/notes/array/README.md b/notes/array/README.md deleted file mode 100644 index ec8b923b..00000000 --- a/notes/array/README.md +++ /dev/null @@ -1,102 +0,0 @@ -# Array - -Java provides a data structure, the array, which stores a fixed-size sequential collection of elements of the same type. An array is used to store a collection of data, but it is often more useful to think of an array as a collection of variables of the same type. - -**Array is indexed collection of fixed number of homogeneous data element.** - -## Advantages -- We can represent huge number of value using single variable. So, that readability of code will be improved. -- Multiple data items of same data type can be accessed using single name. -- Arrays can be used to implement matrices. -- Data structure like queue , linked list can be accessed using arrays. - -## Downpoints -- Fixed in size -- Since array is of fixed size, if we allocate more memory than requirement then the memory space will be wasted. And if we allocate less memory than requirement, then it will create problem. -- The elements of array are stored in consecutive memory locations. So insertions and deletions are very difficult and time consuming. -- Can only hold similar type of data. To overcome this, we use collection framework. - -## Declaration -```java -int[] x; -int []x; -int x[]; -``` - -## One Dimensional Array -```java -int[6] x; ❌ // We cannot define size in declaration. So, we must specify in creation. - -String[] args; ✅ Best way -String []args; -String args[]; -``` - -## Two Dimensional Array -```java -int[][] x; -int [][]x; -int[] []x; -int[] x[]; -int [][]x; -int []x[]; -``` - -## Instantiation -```java -int[] x = new int[1000]; // fixed in size. -``` - -## Initilization -```java -int a[] = new int[5];//declaration and instantiation -a[0] = 10; -a[1] = 20; -a[2] = 70; -a[3] = 40; -a[4] = 50; -``` - -## Note - -- Every Object in Java is object only. -- For every array type, corresponding class are available but not available in programming level. - -```java -System.out.println(a.getClass().getName()); -``` - -| Array Type | Corresponding Class Name | -| ---------- | ------------------------ | -| int[ ] | [ I | -| int[ ][ ] | [ [ I | -| double[ ] | [ D | -| short[ ] | [ S | -| byte[ ] | [ B | -| boolean[ ] | [ Z | -| char[ ] | [ C | -| long[ ] | [ J | - -## Examples -```java -int[] a,b; -> 1D Array -int[] a[],b[]; -> 2D Array -int[] []a,b[]; -> 2D,3D Array -int[] a[]b; -> 2D Array -int[] []a,b; -> 2D Array -int[][]a, []b; ❌ // [ ] can be shared with all, if it comes before variable. - -int[]x = new int[]; // ❌ Size should be mentioned. -int[]x = new int[0]; ✅ -int[]x = new int[-2]; // ✅ Runtime error; though compiled. - -byte b = 20; -int[] x = new int[b]; -int[] x = new int['b']; // Character ASCII gets inputed. -``` -## Internal Representation -Follwing way, we can know more about the internal representation of Arrays. - -```java -{% include 'general/internalRepresentation.java' %} -``` diff --git a/notes/array/arrayRepresentation01/README.md b/notes/array/arrayRepresentation01/README.md deleted file mode 100644 index 1b6decab..00000000 --- a/notes/array/arrayRepresentation01/README.md +++ /dev/null @@ -1,10 +0,0 @@ -# Array Representation 01 - -This representation of array shows how the memory blocks are allocated to the array. Value is not assigned to the memory blocks, though. - -![Array Representation](https://math.hws.edu/eck/cs124/javanotes4/c8/fig5.gif) - -#### Source Code -```java -{% include 'array/arrayRepresentation01/arrayRepresentation01.java' %} -``` diff --git a/notes/array/arrayRepresentation02/README.md b/notes/array/arrayRepresentation02/README.md deleted file mode 100644 index 868054b2..00000000 --- a/notes/array/arrayRepresentation02/README.md +++ /dev/null @@ -1,10 +0,0 @@ -# Array Representation 02 - -This representation of array teaches how to allocate the memory block to the elements and assign the integer value to those memory blocks. - -![Array Representation 02](https://ecomputernotes.com/images/Multidimensional-Array.jpg) - -#### Source Code -```java -{% include 'array/arrayRepresentation02/arrayRepresentation02.java' %} -``` diff --git a/notes/array/conventional/README.md b/notes/array/conventional/README.md deleted file mode 100644 index c8a81e20..00000000 --- a/notes/array/conventional/README.md +++ /dev/null @@ -1,5 +0,0 @@ -## Conventional Way Of Declaring Array - -![Conventional Way of Declaring Array](https://thearjun.tech/array/conventionalWayOfDeclaringArray.png) - -This method of declaring array is often referred as conventional way of declaring array. \ No newline at end of file diff --git a/notes/array/extra.md b/notes/array/extra.md deleted file mode 100644 index 78c6835d..00000000 --- a/notes/array/extra.md +++ /dev/null @@ -1,42 +0,0 @@ -# Array Examples - -#### Arrays -```java -{% include 'array/arrays.java' %} -``` - -#### Alternate Array Declaration -```java -{% include 'array/alternativeArrayDeclaration.java' %} -``` - -#### Array Assignment -```java -{% include 'array/arrayAssignment.java' %} -``` - - -#### Average Using Arrays -```java -{% include 'array/averageUsingArray.java' %} -``` - -#### Two Dimensional Array -```java -{% include 'array/twoDArray.java' %} -``` - -#### Double Two Dimensional Array -```java -{% include 'array/doubleTwoDimesionalArray.java' %} -``` - -#### Two Dimensional Array Manual Allocation -```java -{% include 'array/twoDimensionalArrayManualAllocation.java' %} -``` - -#### Three Dimensional Array -```java -{% include 'array/threeDimensionalArray.java' %} -``` diff --git a/notes/array/matrixRepresentation/README.md b/notes/array/matrixRepresentation/README.md deleted file mode 100644 index d5ef9f15..00000000 --- a/notes/array/matrixRepresentation/README.md +++ /dev/null @@ -1,18 +0,0 @@ ---- -title: Matrix Representation of Arrays ---- -# Matrix Representation - -![Matrix Representation of Conventional Array](https://cdn.programiz.com/sites/tutorial2program/files/java-2d-array.jpg) - -This type of array declaration is represented in matrix form. Memory wastage is most probable to happen in this scenario and manually unassigned blocks of memory are automatically assigned to zero. - -```java -{% include 'array/matrixRepresentation/matrixRepresentation.java' %} -``` - -## Conventional Representation -This method of declaring array is often referred as conventional way of declaring array. -```java -{% include 'array/conventional/conventionalWay.java' %} -``` diff --git a/notes/controlStatements/README.md b/notes/controlStatements/README.md deleted file mode 100644 index 8c554f54..00000000 --- a/notes/controlStatements/README.md +++ /dev/null @@ -1,19 +0,0 @@ ---- -title: Control Statements -description: Explains about Control Statement in Java in brief. ---- - -A control statement in java is a statement that determines whether the other statements will be executed or not. It controls the flow of a program. - - -## If Statement Examples - -#### 1. Boolean Variable as Argument -```java -{% include 'controlStatements/testCases/ifElse/booleanVariableAssignmentAsArgument01.java' %} -``` -#### 2. Integer Variable as Argument -This doesn't compile as if statement expects boolean value as parameter. -```java -{% include 'controlStatements/testCases/ifElse/intAsArgument.java' %} -``` diff --git a/notes/dataStructures/README.md b/notes/dataStructures/README.md deleted file mode 100644 index 70378d19..00000000 --- a/notes/dataStructures/README.md +++ /dev/null @@ -1,30 +0,0 @@ ---- -title: Data Structures -description: Shows examples on Data Strucutures used in Java. ---- - - -## Examples - -#### 1. Stack -```java -{% include 'dataStructures/stack.java' %} -``` - -#### 2. Tower Of Hanoi -```java -{% include 'dataStructures/TowerOfHanoi/TOH.java' %} -``` -Driver Code -```java -{% include 'dataStructures/TowerOfHanoi/TOHDemo.java' %} -``` - -#### 2. Block Chain -```java -{% include 'dataStructures/blockchain/Block.java' %} -``` -Driver Code -```java -{% include 'dataStructures/blockchain/Main.java' %} -``` diff --git a/notes/events/ActionListener/README.md b/notes/events/ActionListener/README.md deleted file mode 100644 index f2245588..00000000 --- a/notes/events/ActionListener/README.md +++ /dev/null @@ -1,5 +0,0 @@ -# **ActionListener** -- Defines one method to receive actions events. - -**Methods** -``` void actionPerformed(ActionEvet ae)``` diff --git a/notes/events/Adapter/README.md b/notes/events/Adapter/README.md deleted file mode 100644 index 1393bdfe..00000000 --- a/notes/events/Adapter/README.md +++ /dev/null @@ -1,18 +0,0 @@ -# Adapter Class - -- Java compiles a special feature, called an adapter class, that can simplify he creation of event handlers in certain situations. -- An adapter class prvovides an empty implementation of all methods in an ```EventListener ``` interface. -- It is useful when you want to receive and process only some of the events that are handled by a particular event listener interface . - -Commonly used ```Listener``` Interface implemented by Adapter Class : - - -| Adapter Class | Listener Interface | -| --------------|------------------- | -| ```ComponentAdapter``` | ```ComponentListener``` | -| ```ContainerAdapter``` | ```ContainerListener``` | -| ```FocusAdapter``` | ```FocusListener``` | -| ```KeyAdapter``` |``` KeyListener``` | -| ```MouseMotionAdapter``` | ```MouseMotionListener, MouseListener & MouseWheelListener``` | -| ```WindowAdapter``` | ```WindowListener, WindowFocusListener & WindowStateListener``` | - diff --git a/notes/events/AdjustmentListener/README.md b/notes/events/AdjustmentListener/README.md deleted file mode 100644 index f328d474..00000000 --- a/notes/events/AdjustmentListener/README.md +++ /dev/null @@ -1,5 +0,0 @@ -# **AdjustmentListener** -- Defines one methods to receive adjustment events. - -**Methods** - 1. ```void adjustmentValueChanged(AdjustmentEvent ae)``` diff --git a/notes/events/ComponentListener/README.md b/notes/events/ComponentListener/README.md deleted file mode 100644 index 86b44561..00000000 --- a/notes/events/ComponentListener/README.md +++ /dev/null @@ -1,8 +0,0 @@ -# **ComponentListener** -- Defines 4 methods to recognize when a component is hidden , moved , resized or shown. - - **Methods** - 1. ```void componentResized(ComponentEvent ce)``` - 2. ```void componentMoved(ComponentEvent ce)``` - 3. ```void componentShown(ComponentEvent ce)``` - 4. ```void componentHidden(ComponentEvent ce)``` diff --git a/notes/events/ContainerListener/README.md b/notes/events/ContainerListener/README.md deleted file mode 100644 index 3e86ca3b..00000000 --- a/notes/events/ContainerListener/README.md +++ /dev/null @@ -1,6 +0,0 @@ -# ContainerListener -- Defines 2 methods to recognize when a componenet is added to or removed from a container. - -**Methods** -1. ```void containerAdded(ContainerEvent ce)``` -2. ```void containerRemoved(ContainerEvent ce)``` \ No newline at end of file diff --git a/notes/events/EVENTCLASSES.md b/notes/events/EVENTCLASSES.md deleted file mode 100644 index a104c402..00000000 --- a/notes/events/EVENTCLASSES.md +++ /dev/null @@ -1,102 +0,0 @@ -# Event Classes - -![Event Classes](https://i.ibb.co/4jK8m8c/event-Classes.jpg) - -## Action Event Class - -- An Action Event is generated when: - - a button is pressed. - - a list item is double clicked. - - menu item is clicked. - -### Constructor - -- ```ActionEvent(Object src, int type, String cmd)``` -- ```ActionEvent(Object src, int type, String cmd, int modifiers)``` -- ```ActionEvent(Object src, int type, String cmd, long when, int modifiers)``` - -Here, -```src``` = reference to the object that generated this event. -```type``` = Determine type of event -```cmd``` = command string -```modifier``` = indicates modifier keys (```ALT, CTRL, SHIFT```); values are ```ALT_MASK, CTRL_MASK, SHIFT_MASK``` -```when``` = specifies when the event occured - - - You can obtain the command name for the envoking ActionEvent object by using: - ```String getActionCommand()``` - -For eg: -- When a button is pressed, an action event is generated that has a command name equal to the label on that button. -- Other Methods : - - ```int getModifier()``` - ```long getWhen()``` - -## KeyEvent Class -- It is generated when: - - Keyboard input occurs - -### Types of KeyEvent -1. ```KEY_PRESSED``` - generated when key is pressed. -2. ```KEY_RELEASED``` - generated when key is released. -3. ```KEY_TYPED``` - generated when key is generated. - -### Constants - -```VK_ALT```, -```VK_DOWN```, -```VK_LEFT```, -```VK_RIGHT```, -```VK_ENTER```, -```VK_ESCAPE```, -```VK_CONTROL```, -```VK_SHIFT```, - -### Methods - -- ```char getKeyChar ()```; -- ```int getKeyChar ()```; - -## Mouse Event - -- There are eight types of mouse events: -- Eight integer constants are defined to determine types: - -| MOUSE EVENT | Generate | -------------|------------- -| ```MOUSE_CLICKED``` | When user clicked the mouse | -| ```MOUSE_DRESSED``` | The user dragged the mouse | -| ```MOUSE_ENTERED``` | The mouse entered a component | -| ```MOUSE_EXITED``` | The mouse exited from a component | -| ```MOUSE_MOVED``` | The mouse moved | -| ```MOUSE_PRESSED``` | The mouse was pressed | -| ```MOUSE_RELEASED``` | The mouse was released | -| ```MOUSE_WHEEL``` | The mouse wheel was moved. | - -### Methods: - -- ```int getX()``` -- ```int getY()``` -- ```Point getPoint()``` -> gives object that contain X, Y co-ordinates -- ```int getClickCount()``` -- ```boolean isPopupTrigger()``` -> tests if this events causes a pop-up menu to appear on this platform. -- ```int getButton()``` -> returns a values that represents the button that caused the event. - -## Summary - -| Event Class | Description | -------------|------------- -| 1. Action Event | Generated whe a button is pressed, a list item s double-clicked or menu item is selected. | -| 2. Key Event | Generated when input is received from the keyboard | -| 3. Mouse Event | Generated when the mouse is dragged, moved, clicked, pressed, or released, enter or exist component. | -| 4. Adjustment Event | Generated when a scroll bar is manipulated. | -| 5. Component Event | Generated when a component is hidden, move, resized or becomes visible. | -| 6. Container Event | Generated when a component is added to or remoevd from a component. | -| 7. Focus Event | Generated when a component is gains or loses keyboard focus. | -| 8. Input Event | Abstract superclass for all component input event classes. | -| 9. Item Event | Generated when a checkbox or list item is clicked: also occurs when a choice selection is made or a checkable menu item is selected or deselected. | -| 10. MouseWheelEvent | Generated when the mouse wheel is moved. | -| 11. TextEvent | Generated when the value of a text area or text field is changed. | -| 11. WindowEvent | Generated when a window is activated, closed, deactivated, opened or quitted. | - - diff --git a/notes/events/EVENTLISTENERS.md b/notes/events/EVENTLISTENERS.md deleted file mode 100644 index bde24430..00000000 --- a/notes/events/EVENTLISTENERS.md +++ /dev/null @@ -1,13 +0,0 @@ -# Sources of Events - 1. ```Button```, - 2. ```CheckBox```, - 3. ```Choice```, - 4. ```List```, - 5. ```Menu Item```, - 6. ```Scrollbar```, - 7. ```TextField```, - 8. ```TextArea```, - 9. ```Window``` - -> User -> Event source -> Generates Event Objects -> Pass to EventListener(Handler) -> Handle and Return back to Source - diff --git a/notes/events/FocusListener/README.md b/notes/events/FocusListener/README.md deleted file mode 100644 index 9ddeaf96..00000000 --- a/notes/events/FocusListener/README.md +++ /dev/null @@ -1,6 +0,0 @@ -# FocusListener -- Defines 2 methods to recognize a component gain or loses keyboard focuses - -**Methods** -1. ```void focusGained(FocusEvent fe)``` -2. ```void focusLost(FocusEvent fe)``` \ No newline at end of file diff --git a/notes/events/ItemListener/README.md b/notes/events/ItemListener/README.md deleted file mode 100644 index 4b9aae68..00000000 --- a/notes/events/ItemListener/README.md +++ /dev/null @@ -1,5 +0,0 @@ -# ItemListener: -- Defines 1 method to recognize when the state of an item changes - -**Methods** -1. ```void itemStateChange(ItemEvent ie)``` \ No newline at end of file diff --git a/notes/events/KeyListener/README.md b/notes/events/KeyListener/README.md deleted file mode 100644 index 3a05864d..00000000 --- a/notes/events/KeyListener/README.md +++ /dev/null @@ -1,7 +0,0 @@ -## **KeyListener Interface** -- Define 3 methods to recognize when a key is pressed, released or typed. - - **Methods** -1. ```void keyPressed(KeyEvent ke)``` -2. ```void keyReleased(KeyEvent ke)``` -3. ```void keyTyped(KeyEvent ke)``` \ No newline at end of file diff --git a/notes/events/MouseListener/README.md b/notes/events/MouseListener/README.md deleted file mode 100644 index 4e628353..00000000 --- a/notes/events/MouseListener/README.md +++ /dev/null @@ -1,10 +0,0 @@ -## **MouseListener** - - - Defines 5 methods to recognize when the mouse is clicked, enters a component, exits component, is pressed, is released. - - **Methods** -1. ```void mouseClicked(MouseEvent me)``` -2. ```void mouseEntered(MouseEvent me)``` -3. ```void mouseExited(MouseEvent me)``` -4. ```void mousePressed(MouseEvent me)``` -5. ```void mouseReleased(MouseEvent me)``` diff --git a/notes/events/MouseMotionListener/README.md b/notes/events/MouseMotionListener/README.md deleted file mode 100644 index 64523783..00000000 --- a/notes/events/MouseMotionListener/README.md +++ /dev/null @@ -1,6 +0,0 @@ -# MouseMotionListener -- Defines 2 methods to recognize when mouse is dragged or moved. - -**Methods** - 1. ```void mouseDraged(MouseEvent me)``` - 2. ```void mouseMoved(MouseEvent me)``` diff --git a/notes/events/MouseWheelListener/README.md b/notes/events/MouseWheelListener/README.md deleted file mode 100644 index 64b34aa6..00000000 --- a/notes/events/MouseWheelListener/README.md +++ /dev/null @@ -1,5 +0,0 @@ -# MouseWheelListener --Defines 1 method to recognize when the mouse wheel is moved. - -**Methods** -1. ```void mouseWheelMoved(MouseWheelEvent mwe)``` diff --git a/notes/events/README.md b/notes/events/README.md deleted file mode 100644 index c1a18ee0..00000000 --- a/notes/events/README.md +++ /dev/null @@ -1,53 +0,0 @@ -# Event Handling - -## What is Event ? - -- Change in the state of an object is known as event. i.e. event describes the change i state of source. -- Events are generated as a result of **user interaction with GUI components**. But they can also be generated explicitly. -- For eg: Clicking on a button, moving the mouse, entering character through keyboard. - -## What is Event Listener ? - -- A Listener is an object that is notified when an event occurs. -- a.k.a **Event Handler**. (also known as) -- Listener is responsible for generating response to an event. -- It has two major requirements: - 1. **First**, it must have been registered with one or more source to receive notifications about specific types of events. - 2. It must implement methods to receive and process these notifications. - -## What is Event Source ? -- A source is an object that generates an event. This occurs when the internal state of the object chages in some way. -- Source may generate more than one tyoe of event. -- A source must register listeners in order for the listeners to recieve notifications about specific type of event. -- Each type of event has its own registration method. Here is the general form. - ```public void addTypeListener (TypeListener el)``` // el = event listener - For eg: -```addKeyListener()``` - Here Type is the name of the event and el is the reference to the event listener. -- When an event occurs, all registered listeners are notified and recieve a copy of event object. This is known as **multicasting the event**. -- Some sources may allow only one listener to register. When such an event occurs, the registered listener is notified. This is known as **unicasting the event**. -- A source must also provide method that allows a listener to unregister an interest in a specific type of event. The general form: - ```public void removeTypeListener(TypeListener el)``` -## What is Event Handling ? -- It is the mechanism that controls the event and decides what should happen if an event occurs. -- Java Uses **Event Delegation Model**. - -## Event Delegation Model - -![Figure For Event Delegation Model](http://www.lessons2all.com/java%20images/20.jpg) - -- **Concept**: - - - A source generates an event and sends it to one or more listeners. - - The listener simply waits until it receives an event. Once an event is recieved, the listener processes the event and then returns. - -- **Advantages** - - The advantages of this design is that the application logic that processes events is clearly separated from the UI logic that generates those events. - - - -### Using the Delegation Event Model - -**Steps** -1. Implement the appropriate interface in the listener so that it can receive the type of event desired. -2. Implement code to register and unregister (if necessary) the listerner as a recipient for the event notifications. diff --git a/notes/events/TextListener/README.md b/notes/events/TextListener/README.md deleted file mode 100644 index d9165864..00000000 --- a/notes/events/TextListener/README.md +++ /dev/null @@ -1,5 +0,0 @@ -# TextListener -- Defines 1 method to recognize when a text value changes. - -**Methods** - 1. ```void textValueChanged(TextEvent te)``` \ No newline at end of file diff --git a/notes/events/WindowFocusListener/README.md b/notes/events/WindowFocusListener/README.md deleted file mode 100644 index 3705870c..00000000 --- a/notes/events/WindowFocusListener/README.md +++ /dev/null @@ -1,6 +0,0 @@ -# WindowFocusListener -- Defines 2 methods to recognize when a window gains ore loses input focus - -**Methods** -1. ```void windowGainedFocus(WindowEvent we)``` -2. ```void windowLostFocus(WindowEvent we)``` \ No newline at end of file diff --git a/notes/events/WindowListener/README.md b/notes/events/WindowListener/README.md deleted file mode 100644 index 2fc5a597..00000000 --- a/notes/events/WindowListener/README.md +++ /dev/null @@ -1,11 +0,0 @@ -# WindowListener -- Defines 7 methods to recognize when a window is activated, closed, deactivated,iconified, deiconified, opened or quit. - -**Methods** -1. ```void windowActivated(WindowEvent we)``` -2. ```void windowClosed(WindowEvent we)``` -3. ```void windowClosing(WindowEvent we)``` -4. ```void windowDeactivated(WindowEvent we)``` -5. ```void windowIconified(WindowEvent we)``` -6. ```void windowDeiconified(WindowEvent we)``` -7. ```void windowOpened(WindowEvent we)``` \ No newline at end of file diff --git a/notes/exams/examAnswers/DBAbstractClassAndInterface.md b/notes/exams/examAnswers/DBAbstractClassAndInterface.md deleted file mode 100644 index bd45974b..00000000 --- a/notes/exams/examAnswers/DBAbstractClassAndInterface.md +++ /dev/null @@ -1,12 +0,0 @@ -# Difference between Abstract Class and Interface - -| Abstract Class | Interface | -|----------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------| -| An abstract class is a class that is declared abstract —it may or may not include abstract methods. Abstract classes cannot be instantiated, but they can be subclassed. However, if it does not, then the subclass must also be declared abstract . | A Java interface is a bit like a class, except a Java interface can only contain method signatures and fields. An Java interface cannot contain an implementation of the methods, only the signature (name, parameters and exceptions) of the method. You can use interfaces in Java as a way to achieve polymorphism. | -| If we are talking about implementation, but not completely; we use abstract class. | If we don't know about the implementation, just have requirements, go with interface. | -| We can take abstract and concrete class. | Method is public and abstract. Interface is 100% abstract class. | -| No restrictions on abstract class access modifiers. | We can't declare private and protected. | -| Variables present inside abstract class needn't to be public, static and final. | Every interface variable is public, final and static whether we are declaring it or not. | -| No restrictions for initialization of variables. | Initialization of variable is mandatory during declaration; else compile-time error. | -| No restrictions on declaring static blocks (functions). We can declare instances too. | Can't declare instance and static blocks; else compile-time error. | -| It can take instance variable. if we want we can have constructors too. | No constructor which sole purpose is to initialize the variable. | \ No newline at end of file diff --git a/notes/exams/examQuestions/ProgrammingQuestions.md b/notes/exams/examQuestions/ProgrammingQuestions.md deleted file mode 100644 index d3cd9f49..00000000 --- a/notes/exams/examQuestions/ProgrammingQuestions.md +++ /dev/null @@ -1,85 +0,0 @@ ---- -title: Programming Questions -description: Java Programming Questions appeared in exams of Pokhara University Bachelors Degree. ---- - -> ✅ in questions denotes the no of question appearence. More the tick in question, possess high importance from examination point of view. - -## Chapter 1 - -1. Write a program to sort any five names in alphabetical order. -2. Write a program to print “Hello Nepal” in console. ✅ -```java -{% include 'exams/examAnswers/programmingAnswers/chapterOne/Two.java' %} -``` -3. Write a program to show usage of various data types in Java. -4. Write a function that takes an array of integers as an argument and returns sum of even numbers in that array. -```java -{% include 'exams/examAnswers/programmingAnswers/chapterOne/Four.java' %} -``` -5. Write a program to generate the following triangle using for loop. -``` -1 -0 1 -1 0 1 -0 1 0 1 -``` -```java -{% include 'exams/examAnswers/programmingAnswers/chapterOne/Five.java' %} -``` -## Chapter 2 - -1. Write a program which has two classes A and B, where A should act as Parent class and B should inherit from A. -```java -{% include 'exams/examAnswers/programmingAnswers/chapterTwo/One.java' %} -``` -2. Create a class ```Employee``` with ```id, name, post and salary```. Create parameterized constructor to initialize the instance variables. Override the ```toString( )``` method to display the employee details. -```java -{% include 'exams/examAnswers/programmingAnswers/chapterTwo/Two.java' %} -``` -3. Create a class Parts with instance variable ```sno, name, model, price```, constructors to initialize the object, a method to calculate commission which calculates 10% of the price of each item and a method to display the details. Derive a new class ```PartsVAT``` with a method to calculate 13% VAT of the item. Write necessary constructors to that use the super constructors. Test the classes using a main method in third classes. -```java -{% include 'exams/examAnswers/programmingAnswers/chapterTwo/Three.java' %} -``` -4. Write an interface Exam with a method ```pass (int pass)``` that returns a Boolean. Write another interface Classify with a method ```division (int average)``` which returns a string. Write class ```Result``` which implements both Exams and Classify. The pass method should return true if score is greater than 50 otherwise false. The division method must return “First” when average is more than 80, “Second when average is more than 50 otherwise ”No Divison”. -```java -{% include 'exams/examAnswers/programmingAnswers/chapterTwo/Four.java' %} -``` -5. Write a Java program to demonstrate runtime polymorphism via method overriding. Write the following classes: ```Animal``` as a base class, ```Cat``` (derived class of Animal) and ```Cow``` (derived class of Animal). Write a method ```eat( )``` in Animal class and override that method in the derived classes. -```java -{% include 'exams/examAnswers/programmingAnswers/chapterTwo/Five.java' %} -``` -6. Implement an abstract class named ```Person``` and two subclasses named ```Student``` and ```Employee``` in Java. A person has a ```name, address, phone number``` and ```e-mail address```. A student has a class ```status (freshman, sophomore, junior or senior)```. Define the ```status``` as a constant. An employee has an ```office, salary and date-hired```. Implement the above classes in Java. Provide Constructors for classes to initialize private variables. Override the ```toString( )``` methods in each class to display class name and the person’s name. Write an application to create objects of type Student and Employee and print the person’s name and the class name of the objects. -```java -{% include 'exams/examAnswers/programmingAnswers/chapterTwo/Six.java' %} -``` -7. Implement an abstract class named ```Book``` and two other subclasses named Novel and Magazine. A ```Book``` has a ```name, author, total page``` and ```publisher```. Book has an abstract method called ```getBookType( )```. ```Novel``` and ```Magazine``` have field to determine their type. Implement the above classes in Java. Provide constructors for classes to private variables. -```java -{% include 'exams/examAnswers/programmingAnswers/chapterTwo/Seven.java' %} -``` -8. Make a class ```Human``` with a ```name``` and ```age```. Make a class ```Employee``` inherit from ```Human```. Add instance variable ```salary``` of double. Supply a method ```showData( )``` that prints the Employee’s ```name, age```, and ```salary```. Make a class ```Manager``` inherit from Employee. Supply appropriate ```showData( )``` methods for all classes. Provide a test program that tests these classes and methods. -```java -{% include 'exams/examAnswers/programmingAnswers/chapterTwo/Eight.java' %} -``` -9. Create a class MyClass in a package ```MyPack```. Import newly created class ```MyClass``` form ```IpmClass```. - -## Chapter 3 - -1. Write a program to input an integer from keyboard and print it on the console. Fire an exception if the input is other than integer using try and catch. -2. Write a program to create your own Arithmetic Exception. - -## Chapter 4 - -1. Write a program in Java to read a line of string in console mode and display same line as output. ✅ ✅ ✅ ✅ -2. Write a Java program to access an existing file in to your current directory. -3. Write a program which stores and appends any String value given from keyword into the ```C:\store.txt```. -4. Write a program to read a text file and display the content on screen. -5. Write a program to read two integer numbers from the console using the Input Stream. Calculate their sum display in console. -6. Write a program to store objects of a class Student into a file “student.dat” also reads the objects from same file and display the file state of objects on the screen. Handle possible exceptions. -7. Write a program using any stream class for writing text to a file. -8. Write a program to read content from file “```abc.txt```” and store it in “```xyz.txt```”. -```java -{% include 'exams/examAnswers/programmingAnswers/chapterFour/Eight.java' %} -``` -9. Write a program to write “```Hello World```” in a file ```abc.txt```. - diff --git a/notes/exams/examQuestions/README.md b/notes/exams/examQuestions/README.md deleted file mode 100644 index f98060e6..00000000 --- a/notes/exams/examQuestions/README.md +++ /dev/null @@ -1,141 +0,0 @@ ---- -title: General Exam Questions -description: Java Questions appeared in exams of Pokhara University Bachelors Degree. ---- - -> ✅ in questions denotes the no of question appearence. More the tick in question, possess high importance from examination point of view. - -## Chapter 1 -1. Define Java. -2. Write about the historical background of JPL. ✅ ✅ ✅ -3. Why and where we use Java Programming Language? ✅ -4. What are the benefits of using Java? -5. How Java is more secure than other programming languages? Explain. -6. “Java is Interpreted, High Performance, Dynamic, Secure, Robust”. Explain the statement. -7. Explain Java Platform with their inter co-related technologies. Draw a sample block diagram to show compile time environment in Java programming. -8. List down the different features of Java. ✅ ✅ -9. Explain how Java supports multiple platforms, platform independency. ✅ ✅ ✅ -10. How do you differentiate JDK and JRE? What is the significance of having multiple data types in programming language? -11. What do you mean by Java System Overview? Explain why Java program are known as portable and architecture neutral. -12. What is the motive behind JVM? Explain what you mean by JRE. -13. Is JVM is machine dependent? Explain the use of JVM. How JVM makes machine dependent. -14. What do you mean by architectural – neutral? What are wrapper classes? -15. What are the uses of Java Virtual Machine in JPL? ✅ ✅ ✅Explain the two types of class loader in JPL. -16. Explain why Java programs are compiled with bytecodes? ✅ ✅ -17. What is a class file? Differentiate between assignment and initialization with suitable example. -18. Explain all facilities the Java Programming has over C++. Why it is more popular than C++? ✅ ✅ ✅ - Portability, platform independence (JVM), Java runs on any platform without recompiling. -19. Write a program to sort any five names in alphabetical order. -20. Write a program to print “Hello Nepal” in console. ✅ -21. Write a program to show usage of various data types in Java. -22. Write a function that takes an array of integers as an argument and returns sum of even numbers in that array. -23. Write a program to generate the following triangle using for loop. -``` -1 -0 1 -1 0 1 -0 1 0 1 -``` - - -## Chapter 2 - -1. How do you implement the concept of OOP in Java? Explain with an example. -2. How the concept of reusability can be useful in OOP? Explain with example, in terms of JPL. ✅✅ -3. How does Java support reusability? Provide examples. -4. What is a class? ✅ How does it accomplish data hiding? Explain with suitable example. What advantages do we have when inheriting from a class whose attributes are protected rather than private? -5. How are class declared in Java? Illustrate with example. -6. Show the differences between user defined classes and system defined class. ✅ -7. Explain how we can re-use the user defined classes. -8. What is constructor, Explain with example? -9. State the difference between inner and outer class with the help of suitable example. ✅ -10. In what scenario inner use of inner class is preferred? Explain the static and non-static inner classes with example. -11. Mention the scope of all modifiers (private, default, protected and public). Write suitable program to illustrate the concept. -12. Write a simple program to show the difference in using and not using static keyword in defining methods. -13. Explain the key words “public, static, void, private, protected” with reference to JPL. ✅ -14. Discuss about the concept of instance variable hiding in Java. Illustrate with a code example. -15. Can you override private or static method in Java? Explain with an example. -16. How inner class helps programmer? Write a short program snippet to show anonymous inner classes. -17. Difference between class method and instance method with suitable example. -18. Explain the difference between method overloading and method overriding? ✅ ✅✅ ✅ ✅ -19. Write a program to show method overriding. -20. Define polymorphism. How should we implement polymorphism in Java? Explain with example. -21. Write a java class to demonstrate method overloading. Define a ```sum( )``` method which takes two parameters and displays the sum. The ```sum( )``` method should be overloaded to accept a combination of integer and double type number. ✅ -22. Explain the uses of super and this keyword with suitable examples. -23. Define inheritance.✅ ✅ ✅ ✅ ✅ Explain different types of inheritance. ✅ How does inheritance reduce the program development time? Explain with example. -24. Explain the strategy for designing Inheritance. ✅ Describe how we can prevent inheritance. -25. Explain one method and multiple implementation approach of inheritance with example. -26. Write a program deriving two child classes from a base class using Java. -27. What is the use of abstract keyword? Explain with a suitable program. -28. How is abstract class different from interfaces? ✅ ✅ ✅ ✅ -29. What is the use of abstract classes in programming? -30. What is difference between Interface and a class? Explain with an example. -31. What is an interface? ✅ ✅ ✅ ✅ ✅ ✅ Explain with a suitable example. ✅ ✅ -32. What are the significant uses of interface? Explain how it is implemented in Java. ✅ -33. How do you design and use interface? ✅ ✅ -34. How Java supports Multiple Inheritance? Write a program in Java that shows the concept of Multiple Inheritance. ✅ -35. Why is multiple inheritance not supported in Java. Provide a simple code example to support your answer. -36. What is runtime polymorphism? Explain how it can be achieved in Java. -37. What is the difference between static method and non-static method? Can a non-static method be invoked from a static method? Explain with example? -38. Write a program which has two classes A and B, where A should act as Parent class and B should inherit from A. -39. Create a class ```Employee``` with ```id, name, post and salary```. Create parameterized constructor to initialize the instance variables. Override the ```toString( )``` method to display the employee details. -40. Create a class Parts with instance variable ```sno, name, model, price```, constructors to initialize the object, a method to calculate commission which calculates 10% of the price of each item and a method to display the details. Derive a new class ```PartsVAT``` with a method to calculate 13% VAT of the item. Write necessary constructors to that use the super constructors. Test the classes using a main method in third classes. -41. Write an interface Exam with a method ```pass (int pass)``` that returns a Boolean. Write another interface Classify with a method ```division (int average)``` which returns a string. Write class ```Result``` which implements both Exams and Classify. The pass method should return true if score is greater than 50 otherwise false. The division method must return “First” when average is more than 80, “Second when average is more than 50 otherwise ”No Divison”. -42. Write a Java program to demonstrate runtime polymorphism via method overriding. Write the following classes: ```Animal``` as a base class, ```Cat``` (derived class of Animal) and ```Cow``` (derived class of Animal). Write a method ```eat( )``` in Animal class and override that method in the derived classes. -43. Implement an abstract class named ```Person``` and two subclasses named ```Student``` and ```Employee``` in Java. A person has a ```name, address, phone number``` and ```e-mail address```. A student has a class ```status (freshman, sophomore, junior or senior)```. Define the ```status``` as a constant. An employee has an ```office, salary and date-hired```. Implement the above classes in Java. Provide Constructors for classes to initialize private variables. Override the ```toString( )``` methods in each class to display class name and the person’s name. Write an application to create objects of type Student and Employee and print the person’s name and the class name of the objects. -44. Implement an abstract class named ```Book``` and two other subclasses named Novel and Magazine. A ```Book``` has a ```name, author, total page``` and ```publisher```. Book has an abstract method called ```getBookType( )```. ```Novel``` and ```Magazine``` have field to determine their type. Implement the above classes in Java. Provide constructors for classes to private variables. -45. Make a class ```Human``` with a ```name``` and ```age```. Make a class ```Employee``` inherit from ```Human```. Add instance variable ```salary``` of double. Supply a method ```showData( )``` that prints the Employee’s ```name, age```, and ```salary```. Make a class ```Manager``` inherit from Employee. Supply appropriate ```showData( )``` methods for all classes. Provide a test program that tests these classes and methods. -46. Define packages. ✅ ✅ -47. Explain the significance of using package in Java. Differentiate interface with abstract classes. -48. Write a package of three classes where each class must have at least one function. Also, state the steps to execute the package. ✅ ✅Add illustration. -49. How packages are created and used in Java? Explain with example. ✅ -50. What is user defined package? Illustrate the process of defining and using define package with suitable example. -51. Difference between package and interface in Java. Provide examples for each of them. -52. Create a class MyClass in a package ```MyPack```. Import newly created class ```MyClass``` form ```IpmClass```. -## Chapter 3 -1. What are exceptions? ✅ ✅ ✅ -2. What do you understand by exceptional handling? Describe about try-catch-finally construct with an example. ✅ ✅ ✅ ✅ ✅ -3. What’s the use of try and catch block in Java? Write down all the exceptions that occur when we are dealing with array. -4. Define Exceptional Handling with the help of a suitable program. ✅ ✅ -5. Explain the different types of Exceptional Class. ✅ -6. What is usage of exception handling? Define with example. -7. What is exception handling? Is an error similar to exception? ✅ ✅ -8. Explain how an exception is handled?✅ -9. What are the major exception classes used in Java? ✅ -10. How does an exception occur in Java? -11. Explain the user defined Exceptions with suitable Java code. -12. Differentiate between checked and unchecked exceptions with relevant examples. -13. How you can create your own exceptions in Java? Explain with Program. -14. Write a program to input an integer from keyboard and print it on the console. Fire an exception if the input is other than integer using try and catch blocks. -15. Write a program to create your own Arithmetic Exception. -## Chapter 4 -1. Write a program in Java to read a line of string in console mode and display same line as output. ✅ ✅ ✅ ✅ -2. Write a Java program to access an existing file in to your current directory. -3. Write a program which stores and appends any String value given from keyword into the ```C:\store.txt```. -4. Write a program to read a text file and display the content on screen. -5. Write a program to read two integer numbers from the console using the Input Stream. Calculate their sum display in console. -6. Write a program to store objects of a class Student into a file “student.dat” also reads the objects from same file and display the file state of objects on the screen. Handle possible exceptions. -7. Explain various stream classes available in Java. Write a program using any stream class for writing text to a file. -8. Write a program to read content from file “```abc.txt```” and store it in “```xyz.txt```”. -9. Write a program to write “```Hello World```” in a file ```abc.txt```. -## Short Notes -1. History of Java -2. Benefits of Java -3. Java Virtual Machine (JVM) ✅ & Byte Code -4. Data Types, Variables and class ✅ ✅ -5. Assignment vs. Initialization -6. Arrays -i. Single Dimensional -ii. Multi-Dimensional -7. Type casting ✅ -8. Inner Class ✅ ✅ ✅ ✅ ✅ ✅ -9. Final Keyword -10. Access mechanism in Java ✅ ✅ ✅ -11. Static members ✅ -12. Static member variable ✅ -13. Abstract Methods and Classes -14. Runtime Polymorphism in Java -15. Wrapper Classes -16. Inheritance -17. Packages -18. Dynamic Dispatching -19. Casting Abstract Classes diff --git a/notes/exception/ChainedException/README.md b/notes/exception/ChainedException/README.md deleted file mode 100644 index 63a349d7..00000000 --- a/notes/exception/ChainedException/README.md +++ /dev/null @@ -1,12 +0,0 @@ -# Chained Exceptions -- allow to associate another exception with an exception. - -> To allow chained Exceptions, two constructors and two methods are added to Throwable. - -1. Throwable (Throwable cause Exception) -2. Throwable (String message, Throwable cause Exception) - -Two methods used are: - -1. Throwable getCause() -2. Throwable initCause (Throwable causeException) \ No newline at end of file diff --git a/notes/exception/NestedTry/README.md b/notes/exception/NestedTry/README.md deleted file mode 100644 index 91dad14b..00000000 --- a/notes/exception/NestedTry/README.md +++ /dev/null @@ -1,5 +0,0 @@ -# Nested Try Statement - -- The try statement can be nested i.e , a try can be inside the block of another try. -- Each time a try statement is entered, the contact of that exception is pushed in the track. -- If an inner try statement doesn't have a catch handler for particular exception, the stack is unwound and the next try statement catch handler are inspected for a match. This continues until one of the catch statement succeeds or until all of the nested try statments are exhausted. If no catch statements matches then the Java Runtime System will handle the exception. \ No newline at end of file diff --git a/notes/exception/README.md b/notes/exception/README.md deleted file mode 100644 index 1b1135a4..00000000 --- a/notes/exception/README.md +++ /dev/null @@ -1,43 +0,0 @@ -# Exception Handling - -- Exception is an abnormal condition that arises in a code sequence at run time. -- When an exceptional condition arises, an object representing that exception is created and thrown in the method that caused the error. -- Exceptions can be generated by : - - - Java run-time system - Exceptions thrown by Java relate to fundamental errors that violate the rules of Java language or the constraints of Java execution environment. - - Can be manually generated by your code. - - Java exception handling is managed via five keywords: - 1. ```try``` - 2. ```throw``` - 3. ```catch``` - 4. ```throws``` - 5. ```finally``` - - ![Exception Figure](https://howtodoinjava.files.wordpress.com/2013/04/exceptionhierarchy3.png) - ![Exception Figure One](https://i.stack.imgur.com/v2NAj.png) - -> Exception is recoverable. -> Error is non-recoverable. Eg: lack of resources ➡ Our of memory. - -Under Runtime Exception -1. Arithmetic Exception -2. Null Pointer Exception - -## Uncaught Exceptions: - - class Exception{ - public static void main(String[] args){ - int d = 0; - int a = 42 / d; - } - } - - -## Array Out of Bound Exception - -Here, java runtime system detects the attemps to divide by zero, it constructs a new exception object and then throws this exception. This causes the execution of Exception class to stop because once an exception has been thrown , it must be caught by an exception handler and dealed with immediately. -Here we haven't supplied any exception handlers of our own, so the exception is caught by the default handler provided by Java Runtime System. - - diff --git a/notes/exception/builtIn/README.md b/notes/exception/builtIn/README.md deleted file mode 100644 index f3ba0f12..00000000 --- a/notes/exception/builtIn/README.md +++ /dev/null @@ -1,15 +0,0 @@ -#Java's Built-in Exceptions - -```java.lang``` - -- Most general of these exceptions are subclasses of the standard type RuntimeException. - -1. Checked Exception -- That must be included in a method's throw list if that method can generate one of these Exception and does not handle itself. - -eg: ```ClassNotFOundException, IllegalAccessException``` - -2. Unchecked Exception -- These exceptio need not be included in any method's throw list. -- Compiler doesn't check to see if a method handles or throw these exception. -eg: ```ArithmeticException, ArrayIndexOutofBoundsException``` \ No newline at end of file diff --git a/notes/exception/finally/README.md b/notes/exception/finally/README.md deleted file mode 100644 index 5ce13330..00000000 --- a/notes/exception/finally/README.md +++ /dev/null @@ -1,11 +0,0 @@ -# Finally - -When exceptions are thrown, execution in a method takes a rather abrupt, nonlinear path that alters the normal flow through the method. Depending upon how the method is coded, it is even possible for an exception to cause the method to return prematurely. This could be a problem in some methods. - -The ```finally``` keyword is designed to address this kind of problems. ```finally``` creates a block of code that will be executed after a ```try catch``` block has completed and before the code following the ```try catch``` block. The ```finally``` block will be executed whether or not an exception is thrown. - -If an exception is thrown the ```finally``` block will execute even if no catch statement matches the exception. This can be useful for closing file handles and freeing up any other resources. ```finally``` block is optional. - -> Note - -Each try statments requires at least one catch or finally clause. \ No newline at end of file diff --git a/notes/exception/throw/README.md b/notes/exception/throw/README.md deleted file mode 100644 index 910607a6..00000000 --- a/notes/exception/throw/README.md +++ /dev/null @@ -1,19 +0,0 @@ -# Throw - -- So far, you have only been catching exceptions that are thrown by the Java run-time system. -- However, it is possible to throw an exception explicitly, using ```throw``` statement. - -## General Form : - -```throw throwableInstance; ``` - -**Here, ThrowableInstance must be an object of type Throwable or a subclass of Throwable.** - -- There are two ways you can obtain a Throwable Object. -1. Using a parameter in ```catch``` clause -2. Creating one with the ```new``` operator. - -The flow of execution stops immediately after the ```throw``` statement; any subsequent statements are not executed. The nearest enclosing ```try``` block is inspected to see if it has a ```catch``` statement that matches the type of exception. - -It if does find a match, control is transferred to that statement. If not, then the next enclosing try statement is inspected and so on. If no matching catch is found, then the default exception handler halts the program and prints the stack trace. // Error aauni wala - diff --git a/notes/exception/throws/README.md b/notes/exception/throws/README.md deleted file mode 100644 index 9cdc0c70..00000000 --- a/notes/exception/throws/README.md +++ /dev/null @@ -1,12 +0,0 @@ -# Throws - -- If a method is capable of causing an exception that it doesn't handle, it must specify this behaviour so that colors of the method can guard themself against that exception you do this by including a throws clause in the method declaration. - -- A throw clause lists the type of exception that a method might throw. This is necessary for all exception, except those of type Error and or runtime Exception or any of their subclasses. All other exception that a method can throw must be declared in throw clause. If they are not, a compile time error will occur. - -## General Form : - - type methodName (parameter list) throws exceptionList{ / Exception 1, Exception 2 ... etc. - // code goes here - } - diff --git a/notes/general/README.md b/notes/general/README.md deleted file mode 100644 index 0cdddc30..00000000 --- a/notes/general/README.md +++ /dev/null @@ -1,4 +0,0 @@ -# General Java Questions - -1. Write a program that accepts a number and checks if it equal to the sum of any two numbers in array divided by two. If it doesn't contains such numbers, it should print message to user "**No such numbers found in array**". - > Link to the answer : [Click here](https://github.com/theArjun/Java/blob/819af575612ed1f492d49b2dc4a92bbd95b532ae/general/TargetSumByTwo.java) \ No newline at end of file diff --git a/notes/graphics/README.md b/notes/graphics/README.md deleted file mode 100644 index 2305db41..00000000 --- a/notes/graphics/README.md +++ /dev/null @@ -1,25 +0,0 @@ -# Graphics Context and Graphics Object - -- A graphics context enables drawing on the screen. -- A ```Graphics``` object manages a graphics context and draws pixels pn the screen that represent text and other graphical objects (lines, ellipses, rectangles and polygons.) -- ```Graphics``` object contain methods for drawing, font manipulation, color manipulation. - -## Methods that takes ```Graphics``` object as an argument - -1. ```public void paint(Graphics g)``` -- The ```paint()``` method of the ```Component``` class takes a ```Graphics``` object as a argument. -- This object is passed to the paint method by the system when a ```paint()``` method by the system when a paint operation is required for a component. -- The ```paint()``` method defined in class ```Component``` does nothing by default, it must be overridden by the programmer. -- The ```paint()``` method is rarely called directly by the programmer. -- When an applet executes, the ```paint()``` method is automatically caused. Similarly, when any component is displayed, that component's paint method is called automatically. - - A. ```public void repaint()``` -- If the progammer needs to call ```paint()```, a call is made to the ```Component``` class ```repaint()``` method. -- The paint method request a call to the ```Component```'s update method. - -2. ```public void update()``` -- In AWT GUI Components, the ```update()``` clears the background of GUI components. - -3. ```public void paintComponent(Graphics g)``` -- Swing components the inherit from the class ```JComponent``` contain method ```paintComponent()``` that helps them to draw properly in the context of a swing GUI. - diff --git a/notes/graphics/color/README.md b/notes/graphics/color/README.md deleted file mode 100644 index 4347ba23..00000000 --- a/notes/graphics/color/README.md +++ /dev/null @@ -1,19 +0,0 @@ -# Color Control - -> Color constants and their RGB values - -| Constant | RGB Value| -|--------|---------| -| ```public static final Color RED``` | 255,0,0 | -| ```public static final Color GREEN``` | 0,255,0 | -| ```public static final Color BLUE``` | 0,0,255 | -| ```public static final Color ORANGE``` | 255,200,0 | -| ```public static final Color PINK``` | 255,75,175 | -| ```public static final Color CYAN``` | 0,255,255 | -| ```public static final Color MAGNETA``` | 255,0,255 | -| ```public static final Color YELLOW``` | 255,255,0 | -| ```public static final Color BLACK``` | 0,0,0 | -| ```public static final Color WHITE``` | 255,255,255 | -| ```public static final Color GRAY``` | 128,128,128 | -| ```public static final Color LIGHT_GRAY``` | 192,192,192 | -| ```public static final Color DARK_GRAY``` | 64,64,64 | \ No newline at end of file diff --git a/notes/graphics/control/README.md b/notes/graphics/control/README.md deleted file mode 100644 index 84a233f1..00000000 --- a/notes/graphics/control/README.md +++ /dev/null @@ -1,39 +0,0 @@ -# Color Control - -> Color constants and their RGB values - -| Constant | RGB Value| -|--------|---------| -| ```public static final Color RED``` | 255,0,0 | -| ```public static final Color GREEN``` | 0,255,0 | -| ```public static final Color BLUE``` | 0,0,255 | -| ```public static final Color ORANGE``` | 255,200,0 | -| ```public static final Color PINK``` | 255,75,175 | -| ```public static final Color CYAN``` | 0,255,255 | -| ```public static final Color MAGNETA``` | 255,0,255 | -| ```public static final Color YELLOW``` | 255,255,0 | -| ```public static final Color BLACK``` | 0,0,0 | -| ```public static final Color WHITE``` | 255,255,255 | -| ```public static final Color GRAY``` | 128,128,128 | -| ```public static final Color LIGHT_GRAY``` | 192,192,192 | -| ```public static final Color DARK_GRAY``` | 64,64,64 | - -## Constructors - -1. ```public Color(int r, int g, int b)``` -> based on RGB values 0-255 -2. ```public color(float r, float g, float b)``` - > based on 0.0 to 1.0 - -## Methods -1. ```public int getRed()``` -2. ```public int getGreen()``` -3. ```public int getBlue()``` - -### Graphics method for manipulating Colors -1. ```public int getColor()``` -- returns object representing current color for the graphics context. - -2. ```public int setColor(Color c)``` -- Sets current color for drawing with the graphics context. - diff --git a/notes/graphics/font/README.md b/notes/graphics/font/README.md deleted file mode 100644 index d658b1f5..00000000 --- a/notes/graphics/font/README.md +++ /dev/null @@ -1,24 +0,0 @@ -# Manipulating Fonts - -## Constants - -```public static final int PLAIN``` -```public static final int BOLD``` -```public static final int ITALIC``` - -## Graphics methods for manipulating fonts - -- ```public Font getText()``` -- ```public void setFont(Font f)``` - -## Constructors -- ```public Font(String name, int style, int size)``` - -## Methods -- ```public int getStyle()``` -- ```public int getSize()``` -- ```public String getName()``` -- ```public String getFamily()``` -- ```public boolean isPlain()``` -- ```public boolean isBold()``` -- ```public boolean isItalic()``` \ No newline at end of file diff --git a/notes/graphics/font/fontMetrics/README.md b/notes/graphics/font/fontMetrics/README.md deleted file mode 100644 index 71e22749..00000000 --- a/notes/graphics/font/fontMetrics/README.md +++ /dev/null @@ -1,14 +0,0 @@ -# Font Metrics -> Important for Exam - -![Font Metrics](https://i.stack.imgur.com/tEt8J.png) - -## Methods -- ```public int getAscent()``` -- ```public int getDescent()``` -- ```public int getLeading()``` -- ```public int getHeight()``` - -## Graphics Methods for getting a Font's Font Metrics -- ```public FontMetrics getFontMetrics()``` -- ```public FontMetrics getFontMetrics(Font f)``` \ No newline at end of file diff --git a/notes/graphics/geometry/README.md b/notes/graphics/geometry/README.md deleted file mode 100644 index ff873a0e..00000000 --- a/notes/graphics/geometry/README.md +++ /dev/null @@ -1,45 +0,0 @@ -# Geometrical Elements - -## Line -- ```public void drawLine(int x1, int y1, int x2, int y2);``` - -## Rectangle -- ```public void drawRect(int x, int y, int width, int height);``` -- ```public void fillRect(int x, int y, int width, int height);``` -- ```public void drawRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight);``` -- ```public void fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight);``` -- -## Oval -- ```public void drawOval(int x, int y, int width, int height);``` -- ```public void fillOval(int x, int y, int width, int height);``` - -## Arc -- ```public void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle);``` -- ```public void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle);``` - -> Negative angle means rotating clockwise, positive means anti-clockwise. - -## Drawing Polygons and Polylines - -- Polygons are closed multisided shapes composed of straight line segments. -- Polylines are sequences of connected points. - -### Polygon Constructors -- ```public Polygon()``` -- ```public Polygon(int[] xValues, int[] yValues , int numberOfPoint)``` -- -### Methods -- ```public void addPoint(int x, int y)``` -> To add one point to the existing polygon, we use this method. - -- In Polygon, if the last point is different from the first, the polygon is closed by a line that connects the last point to the first. -- ```public Polygon()``` -- In Polygon, if the last point is different from the first, the polyline is not closed. - -### Graphics methods for drawing Polygons - -- ```public void drawPolygon(int []xPoints, int []yPoints, int points);``` -- ```public void drawPolyLine(int []xPoints, int []yPoints, int points);``` -- ```public void drawPolygon(Polygon p);``` -- ```public void fillPolygon(Polygon p);``` -- ```public void fillPolygon(Polygon p);``` \ No newline at end of file diff --git a/notes/introduction/DataTypes.md b/notes/introduction/DataTypes.md deleted file mode 100644 index 807b4579..00000000 --- a/notes/introduction/DataTypes.md +++ /dev/null @@ -1,38 +0,0 @@ -# Data Types - -Java is strongly-typed language. - -```java -int x = 10.5; ❌ -boolean b = 0; ❌ -``` - -> Java doesn't support 1/0 as boolean data like C/C++ . - -- Every variable and expression has a type. -- Every type is strictly defined. -- Every assignment should be checked by compile type compatibility. - -### Note : - -```java -if(1){ // Needs true / false. - //doesn't run -} -``` - -> No operator overloading, multiple inheritance are supported in Java. - -### Syntax: - -```java -data_type identifier = literal ; -``` - -![Data Types in Java](https://simplesnippets.tech/wp-content/uploads/2018/03/java-datatypes.jpg) - -> ADT - derived from Primitive Data Type and performs action. - - - - diff --git a/notes/introduction/IDENTIFIER.md b/notes/introduction/IDENTIFIER.md deleted file mode 100644 index d425e86b..00000000 --- a/notes/introduction/IDENTIFIER.md +++ /dev/null @@ -1,52 +0,0 @@ -# Identifier - -- name for program for identification purpose. -- Can be classname, method name, variable name or label name also. -- is case sensitive. -- is any sequence of letters, digits, " _ " , " $ " characters that doesn't begin with a digit. - -> How many identifier here ? - -```java -class Hello{ - public static void main(String[] args){ - int numOne = 20; - int numTwo = 10; - } -} -``` - -String -> Wrapper Class -main -> Name of function/identifier -args -> arguments (variable, used for passing Command Line Arguments) -numOne, numTwo -> Variable -Hello -> Class Name - -| username | ✅ | -| --------- | --- | -| #username | ❌ | -| num1 | ✅ | -| 1num | ❌ | - -```java -class Test{ - int num = 10; - int NUM = 20; - int Num = 30; -} -``` - -> Java is case-sensitive and all three declaration of variables are valid. - -## Notes -- Identifier length is not limit. -- Max character - no length limit - - int while = 20; ❌ - int String = 9; ✅ - -> String is class name, now reserved word. - - - - diff --git a/notes/introduction/README.md b/notes/introduction/README.md deleted file mode 100644 index 42afc386..00000000 --- a/notes/introduction/README.md +++ /dev/null @@ -1,44 +0,0 @@ -# Introduction - -## Let's dive -alpha : testing in own organization -beta : testing in public -nightly build : daily build or nightly build is the practice of completing software build of the latest version of program on a daily basis. - -JEE - Java Enterprise Edition (for enterprise level applications) -JSE - Java Standard Edition (for stand alone) -JME - Java Micro Edition (for mobiles) - -## History of Java - -![History of Java](https://i.ibb.co/KsfHdhT/History-of-Java-1.jpg) - -## Benefits of Java and its features - -1. Simple and easy to learn. -2. Java is almost fully OOP. -3. Java is robust and secure. -4. Architecture neutral and portable. -5. Multithreading -6. Provides High Performance - - -> How is Java platform independent? - -The meaning of platform independent is that, the java source code can run on all operating systems. -A program is written in a language which is a human readable language. It may contain words, phrases etc which the machine does not understand. For the source code to be understood by the machine, it needs to be in a language understood by machines, typically a machine-level language. -So, here comes the role of a compiler. The compiler converts the high-level language (human language) into a format understood by the machines. Therefore, a compiler is a program that translates the source code for another program from a programming language into executable code. -This executable code may be a sequence of machine instructions that can be executed by the CPU directly, or it may be an intermediate representation that is interpreted by a virtual machine. This intermediate representation in Java is the Java Byte Code. - -**Step by step Execution of Java Program** - - 1. Whenever, a program is written in JAVA, the javac compiles it. - The result of the JAVA compiler is the .class file or the bytecode and not the machine native code (unlike C compiler). - 2. The bytecode generated is a non-executable code and needs an interpreter to execute on a machine. This interpreter is the JVM and thus the Bytecode is executed by the JVM. - 3. And finally program runs to give the desired output. - -![Execution with figure](https://cdncontribute.geeksforgeeks.org/wp-content/uploads/java-platform-independent.png) - -> Write once, run everytime. - - diff --git a/notes/introduction/ReservedWord.md b/notes/introduction/ReservedWord.md deleted file mode 100644 index 61bc8ec9..00000000 --- a/notes/introduction/ReservedWord.md +++ /dev/null @@ -1,94 +0,0 @@ ---- -title: Reserved Words -description: Classification of reserved words in Java Programming language. ---- - -| Reserved Word | Keywords | -|------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|--------------------------------------------------------------------------------------------------| -| Java reserved words are the words that are reserved by Java functions or other uses that cannot be used as identifiers (e.g., variable names, function names, class names) | Keywords are the reserved words that keep special meaning in Java. (e.g. for, int, class ,etc.) | -| They are 53 in number till now. | They are 50 in number. | -| All reserved words cannot be keywords. | All keywords are reserved words. | - - - -![Reserved Words](http://1-dot-kriblogapp1.appspot.com/content/studymaterial/j2se/img/java-keywords.png) - -## Used Keywords : -- Exception Handling (6) -- Class Related (6) -- Object Related (4) -- For Data Type (8) -- Control Flow (11) -- Modifier (11) -- Return Type (1) -> void -- Enum(1) -> enum - -### Exception Handling (6) - -``` -1. try -2. catch -3. finally -4. throw -5. throws -6. assert -``` - - -### Class Related (6) - -``` -1. class -2. interface -3. extends -4. implements -5. package -6. import -``` - -### For Data Type (8) - -``` -1. byte -2. short -3. int -4. long -5. float -6. double -7. boolean -8. char -``` - -### Control Flow (11) - -``` -1. if -2. else -3. switch -4. case -5. default -6. while -7. do -8. for -9. break -10. continue -11. return -``` - -### Modifier (11) - -``` -1. public -2. private -3. protected -4. static -5. final -6. abstract -7. synchronized -8. native -9. strictfp -10. transient -11. volatile -``` - - diff --git a/notes/io/BufferedReader/README.md b/notes/io/BufferedReader/README.md deleted file mode 100644 index 8295b6dd..00000000 --- a/notes/io/BufferedReader/README.md +++ /dev/null @@ -1,39 +0,0 @@ ---- -title: BufferedReader -description: Brief info about BufferedReader Class and examples. ---- -> Read line by line or char by char - -## Constructors - -1. ```BufferedReader br = new BufferedReader("abc.txt");``` ❌ // cannot directly communicate with data. -2. ```BufferedReader br = new BufferedReader(Reader r);``` -3. ```BufferedReader br = new BufferedReader(Reader r, int BufferSize);``` - -## Methods - -1. ```int read()``` -2. ```int read(char[] ch)``` -3. ```void close()``` // 1, 2 3 are same as FileReader -4. ```String readline()``` - - To insert line separator. - - -## Examples -#### Text File -- A sample text file named "gces.txt". -``` -{% include 'io/BufferedReader/gces.txt' %} -``` - -#### Read File -- Read from "gces.txt" with BufferedReader. -```java -{% include 'io/BufferedReader/ReadFromGCES.java' %} -``` - -#### Read File With ReadLine -- Read from "gces.txt" with BufferedReader using `readLine()` method.. -```java -{% include 'io/BufferedReader/ReadFromGCES.java' %} -``` diff --git a/notes/io/BufferedWriter/README.md b/notes/io/BufferedWriter/README.md deleted file mode 100644 index 7c9b3d11..00000000 --- a/notes/io/BufferedWriter/README.md +++ /dev/null @@ -1,37 +0,0 @@ ---- -title: BufferedWriter -description: Brief info about BufferedWriter Class and examples. ---- - -## Constructors : - -1. ```BufferedWriter bw = new BufferedWriter("abc.txt");``` ❌ // cannot directly communicate with data. - ```BufferedWriter bw = new BufferedWriter(Writer w);``` -2. ```BufferedWriter bw = new BufferedWriter(Writer w, int buffer size);``` - -### Which one of these are true ? - -1. ```BufferedWriter bw = new BufferedWriter("abc.txt")``` ❌ -2. ```BufferedWriter bw = new BufferedWriter(new File("abc.txt"))``` ❌ -3. ```BufferedWriter bw = new BufferedWriter(new FileWriter("abc.txt"))``` ✅ -4. ```BufferedWriter bw = new BufferedWriter(new FileWriter(new FileWriter("abc.txt")))``` ❌ - -## Methods - -1. ```write (int ch)``` -2. ```write(char[] ch)``` -3. ```write(String s)``` -4. ```flush()``` -5. ```close()``` -6. ```newLine()``` - - To insert line separator. - -- BufferedWriter is almost similar to FileWriter but it uses internal buffer to write data into file. So, if the number of write operation are more, the actual IO operations are less and performance is better. -- You should use BufferedWriter when no. of write operations are more. - -## Examples -#### Write On File -- Write some text on file named "gces.txt". -```java -{% include 'io/BufferedWriter/WriteOnGCES.java' %} -``` diff --git a/notes/io/File/CLA/README.md b/notes/io/File/CLA/README.md deleted file mode 100644 index a5cb39b1..00000000 --- a/notes/io/File/CLA/README.md +++ /dev/null @@ -1,37 +0,0 @@ ---- -title: File CLI App -description: Program that displays files and directories based on Command Line Arguments passed. ---- - -> Program that displays files and directories based on Command Line Arguments passed. - -*First path, then filter :)* - -## Cases - -> No CLA provided : -- It displays all files and directories from the default path. - - javac DisplayWithCLA.java && java Display - -> -f or -d provided : -- It displays either files or directories from the default path. - - javac DisplayWithCLA.java && java Display -f // Displays files from default path. - javac DisplayWithCLA.java && java Display -d // Displays directories from default path. - -> Path provided : -- It displays all files and directories from the given path. - - javac DisplayWithCLA.java && java Display C:\users - -> Path with -f or -d provided : -- It displays either files or directories from the given path. - - javac DisplayWithCLA.java && java Display C:\Users -f // Displays files from given path. - javac DisplayWithCLA.java && java Display C:\users -d // Displays directories from given path. - -## Source Code -```java -{% include 'io/File/CLA/DisplayWithCLA.java' %} -``` diff --git a/notes/io/File/README.md b/notes/io/File/README.md deleted file mode 100644 index b3580fe0..00000000 --- a/notes/io/File/README.md +++ /dev/null @@ -1,57 +0,0 @@ ---- -title: File -description: Brief info about File Class and examples. ---- -``` File f = new File ("myTextFile.txt")``` -- Won't create physical file but this is java ile object. -### Check Existence -```System.out.println(f.exists()); // It returns false. ``` - -### Create File - -```f.createNewFile(); ``` -```f.exists(); // Now, it returns true.``` - -Java io is used on UNIX system. It can be used to represent directory also. - -### Create Directory - -``` File f = new File ("GCES") ;``` -```f.mkdir() ;``` - -## Constructors - -1. ```File f = new File(String name);``` - - To represent resources in current working directory. - -2. ```File f = new File("directory = name","file name");``` - -3. ```File f = new File(File subdirectory, String name);``` - -> File subdirectory refers to another object of File type. - -## Methods - -1. ```boolean exists();``` -2. ```boolean createNewFile();``` -3. ```boolean mkdir();``` -4. ```boolean isFile();``` -5. ```boolean isDirectory();``` -6. ```String[] list();``` -7. ```long length();``` -8. ```boolean delete();``` - - - -## Examples -#### Counts File inside Directory -- Counts file inside a directory path.. -```java -{% include 'io/File/CountsFile.java' %} -``` - -#### Display File and Directories -- Display a list of files and directories inside a directory path. -```java -{% include 'io/File/DisplayFileAndDirectories.java' %} -``` diff --git a/notes/io/FileReader/README.md b/notes/io/FileReader/README.md deleted file mode 100644 index a702f6ec..00000000 --- a/notes/io/FileReader/README.md +++ /dev/null @@ -1,39 +0,0 @@ ---- -title: FileReader -description: Brief info about FileReader Class and examples. ---- - -- to read characters data or text data. -- Here, we can read character by character by character; not line by line. - -## Constructors - -1. ```FileReader fr = new FileReader(String fileName);``` -2. ```FileReader fr = new FileReader(File f);``` - -**If no file is available, this will throw exception.** - -## Methods -1. ```int read ()``` -- Unicode value of character. -2. ```int read (char[] ch)``` -- no of characters copied from file into array. -3. ```void close()``` - -## Examples -#### Text File -``` -{% include 'io/FileReader/myText.txt' %} -``` - -#### Read File By Looping -- Demo of a FileReader class. -```java -{% include 'io/FileReader/FileReaderDemo.java' %} -``` - -#### Read File With Character Array -- Demo of a FileReader class using a array. -```java -{% include 'io/FileReader/FileReaderIntoArray.java' %} -``` diff --git a/notes/io/FileWriter/README.md b/notes/io/FileWriter/README.md deleted file mode 100644 index 2b1ba519..00000000 --- a/notes/io/FileWriter/README.md +++ /dev/null @@ -1,39 +0,0 @@ ---- -title: File Writer (Text data or character data) -description: Brief info about FileWriter Class and examples. ---- -## Constructors - -1. ```FileWriter fw = new FileWriter(String name);``` -2. ```FileWriter fw = new FileWriter(File f);``` -3. ```FileWriter fw = new FileWriter(String name, boolean append);``` -4. ```FileWriter fw = new FileWriter(File f, boolean append);``` - -> Constructors listed 1 and 2 overrides the existing data, but Constructors listed 3 and 4 appends to existing data. - -**If no file is available, this will create that file.** - -## Methods -1. ```write (int ch)``` -- to write a single character to the file. - - fw.write(100); // Unicode value for d is 100 - fw.write('d'); // Both writes d. - -2. ```write(char[] ch)``` -3. ```write(String s)``` -4. ```flush()``` -- To guarantee our data including last char also on written property. -5. ```close()``` - - -## Examples -#### FileWriter Demo -```java -{% include 'io/FileWriter/FileWriterDemo.java' %} -``` - -#### FileWriter Append Demo -```java -{% include 'io/FileWriter/FileWriterAppendDemo.java' %} -``` diff --git a/notes/io/PrintWriter/README.md b/notes/io/PrintWriter/README.md deleted file mode 100644 index aec1565c..00000000 --- a/notes/io/PrintWriter/README.md +++ /dev/null @@ -1,28 +0,0 @@ ---- -title: PrintWriter -description: Brief info about PrintWriter Class and examples. ---- -> Solves problems of FileWriter and BufferedWriter - -## Constructors : - -1. ```PrintWriter bw = new PrintWriter(String fname);``` -2. ```PrintWriter bw = new PrintWriter(File f);``` -3. ```PrintWriter bw = new PrintWriter(Writer w);``` - -## Methods - -1. ```write (int ch)``` -2. ```write(char[] ch)``` -3. ```write(String s)``` -4. ```flush()``` -5. ```close()``` -6. ```print(char ch)...print(int i)...print(boolean b)...print(String s)``` -7. ```println(char ch)...println(int i)...println(boolean b)...println(String s)``` - -## Examples -#### Write On File -- Write some text on file named "abc.txt". -```java -{% include 'io/PrintWriter/WriteIntoFile.java' %} -``` diff --git a/notes/io/README.md b/notes/io/README.md deleted file mode 100644 index 1ee483f3..00000000 --- a/notes/io/README.md +++ /dev/null @@ -1,14 +0,0 @@ -# Java io Package - -> io refers to input / output. - -Provides for system input and output through data streams, serialization and the file system. Unless otherwise noted, passing a null argument to a constructor or method in any class or interface in this package will cause a NullPointerException to be thrown. - -## Classes : - -1. File -2. FileWriter -3. FileReader -4. BufferedWriter -5. BufferedReader -6. PrintWriter diff --git a/notes/io/more-examples/README.md b/notes/io/more-examples/README.md deleted file mode 100644 index 3757369f..00000000 --- a/notes/io/more-examples/README.md +++ /dev/null @@ -1,39 +0,0 @@ ---- -title: More Examples -description: More examples related to I/O operation using various classes. ---- - -#### Text File -- A sample text file named "abc.txt". -``` -{% include 'io/more-examples/abc.txt' %} -``` - -- A sample text file named "xyz.txt". -``` -{% include 'io/more-examples/xyz.txt' %} -``` - -#### Display Text Files -- Display all text files inside a given directory path.. -```java -{% include 'io/more-examples/DisplayTextFiles.java' %} -``` - -#### Merge Text Files -- Read from "abc.txt" and "xyz.txt" and merge into "finalText.txt" file. -```java -{% include 'io/more-examples/MergeFiles.java' %} -``` - -#### Merge Text Files Alternatively -- Read from "abc.txt" and "xyz.txt" and merge into "finalText.txt" file while writing each lines from both files alternatively.. -```java -{% include 'io/more-examples/MergeFilesAlternatively.java' %} -``` - -#### Merge Text Files From Given Path -- Read text files from a given path and merge them. -```java -{% include 'io/more-examples/MergeTextFromGivenPath.java' %} -``` diff --git a/notes/literals/README.md b/notes/literals/README.md deleted file mode 100644 index c758c389..00000000 --- a/notes/literals/README.md +++ /dev/null @@ -1,50 +0,0 @@ ---- -title: Literals -description: Brief info about literals in Java ---- - -Any constant value which can be assigned to the variable is called literal/constant. - -In simple words, Literals in Java is a synthetic representation of boolean, numeric, character, or string data. It is a medium of expressing particular values in the program, such as an integer variable named ‘’/count is assigned an integer value in the following statement. - -```java -// Here 100 is a constant/literal. -int x = 100; -``` - -## Example -#### Program Illustrating Literals -- Program with literals of different data types. -```java -{% include 'literals/literals.java' %} -``` - -#### Float Literal -##### With F -```java -{% include 'literals/testForLiterals/FloatWithF.java' %} -``` -##### Without F -```java -{% include 'literals/testForLiterals/FloatWithoutF.java' %} -``` - -#### Double Literal -##### With D -```java -{% include 'literals/testForLiterals/DoubleWithD.java' %} -``` -##### Without D -```java -{% include 'literals/testForLiterals/DoubleWithoutD.java' %} -``` - -#### Octal Literal -```java -{% include 'literals/testForLiterals/DoubleWithOctalLiteral.java' %} -``` - -#### Hexa Decimal Literal -```java -{% include 'literals/testForLiterals/DoubleWithHexaDecimalLiteral.java' %} -``` diff --git a/notes/networking/ConnectionLess/README.md b/notes/networking/ConnectionLess/README.md deleted file mode 100644 index f48e63b0..00000000 --- a/notes/networking/ConnectionLess/README.md +++ /dev/null @@ -1,41 +0,0 @@ -# Connection Less - 1. Datagram Socket Class - 2. Datagram Packet Class - -## DatagramSocket Class - -- This class represents a connection-less socket for sending and receiving datagram packets. -- A datagram is basically an information but there is no guarantee of its content, arrival or arrival time. - -### Constructor - -1. ```DatagramSocket()``` throws ```SocketException```; -- It creates a datagram socket and binds it with the available Port number on Local Machine. - -2. ```DatagramSocket(int port)``` throws ```SocketException```; -- It creates a datagram socket and binds it with the given port number. - -3. ```Datagram(int port, InetAddress address)``` throws ```SocketException```; - - It binds with the specified port and host address. - -## DatagramPacket Class - - - DatagramPacket is a message that can be sent or received. If you send multiple packet, it may arrive in any order. Additionally, packet delivery is not guaranteed. - -### Constructor - - 1. ```DatagramPacket(byte[] byteArray, int length)``` - - It creates a datagram packet to recieve the packets. - 2. ```DatagramPacket(byte[] byteArray, InetAddress address int length)``` - - It is used to send the packets. - - -## Sender Implementation -```java -{% include 'networking/ConnectionLess/Sender.java' %} -``` - -## Receiver Implementation -```java -{% include 'networking/ConnectionLess/Receiver.java' %} -``` diff --git a/notes/networking/HTTPURLConnection/README.md b/notes/networking/HTTPURLConnection/README.md deleted file mode 100644 index 9757b516..00000000 --- a/notes/networking/HTTPURLConnection/README.md +++ /dev/null @@ -1,6 +0,0 @@ -# HTTP URL Connection - -## Implementation -```java -{% include 'networking/HTTPURLConnection/HttpURLConnectionDemo.java' %} -``` diff --git a/notes/networking/InetAddress/README.md b/notes/networking/InetAddress/README.md deleted file mode 100644 index 879b4813..00000000 --- a/notes/networking/InetAddress/README.md +++ /dev/null @@ -1,18 +0,0 @@ -# InetAddress Class -- InetAddress represents an IP address. -- ```java.net.InetAddress``` class provides methods to get the IP of any hostname(eg : facebook.com); - -## Methods -1. ```public static InetAddress getByName(String host) throws UnknownHostException``` -2. ```public static InetAddress getLocalHost() throws UnknownHostException``` -3. ```public static InetAddress getHostName() throws UnknownHostException``` -- Rturns hostname of IP Address. -4. ```public static InetAddress getHostAddress() throws UnknownHostException``` -5. ```String toString()``` -- Converts IP Address to a String - -## Implementation -```java -{% include 'networking/InetAddress/InetAddressDemo.java' %} -``` - diff --git a/notes/networking/README.md b/notes/networking/README.md deleted file mode 100644 index 00fce9d9..00000000 --- a/notes/networking/README.md +++ /dev/null @@ -1,50 +0,0 @@ -# Network Programming - 1. Socket Programming - 2. URL Processing - -- A Network is a collection of devices that share a common communication protocol and connected with some communication medium. -- A protocol defines a set of rules to which all the communicating parties adhere to (agree). -- The ```java.net``` package was designed with a group of classes and interfaces which not only provide low level but also hight level communication details. -- ```java.net``` package provides support for the two common network protocols. - 1. TCP (Transmission Control Protocol) - 2. UDP(User Datagram Protocol) -- The term network programming refers to writing programs, then execute across multiple devices, in which the devices are all connected to each other using a network. - -## Differences between TCP and UDP -|TRANSMISSION CONTROL PROTOCOL (TCP) | USER DATAGRAM PROTOCOL (UDP)| -|----------------------------------------|-----------------------------| -|1. TCP is a connection-oriented protocol. Connection-orientation means that the communicating devices should establish a connection before transmitting data and should close the connection after transmitting the data.|1. UDP is the Datagram oriented protocol. This is because there is no overhead for opening a connection, maintaining a connection, and terminating a connection. UDP is efficient for broadcast and multicast type of network transmission.| -|2. TCP is reliable as it guarantees delivery of data to the destination router.| 2. The delivery of data to the destination cannot be guaranteed in UDP.| -|3.TCP provides extensive error checking mechanisms. It is because it provides flow control and acknowledgment of data.|3. UDP has only the basic error checking mechanism using checksums.| -|4. Sequencing of data is a feature of Transmission Control Protocol (TCP). this means that packets arrive in-order at the receiver.|4. There is no sequencing of data in UDP. If ordering is required, it has to be managed by the application layer.| -|5. TCP is comparatively slower than UDP.|5. UDP is faster, simpler and more efficient than TCP.| -|6.Retransmission of lost packets is possible in TCP, but not in UDP.| 6.There is no retransmission of lost packets in User Datagram Protocol (UDP).| -|7.TCP has a (20-80) bytes variable length header.|7. UDP has a 8 bytes fixed length header.| -|8.TCP is heavy-weight.|8. UDP is lightweight.| -|9.TCP doesn’t supports Broadcasting.|9. UDP supports Broadcasting.| - -## Some Terminologies - -1. IP Address - - - It is a logical address that can be changed. IP Address are 32-bit number (IPv4 format) often represented as a quad of four 8-bit numbers separated by periods. - Eg : ```192.168.0.1``` - -2. Protocol - - - It is a set of rules basically that is followed for communication. - Eg: TCP, UDP, FTP, POP, SMTP, HTTP, HTTPS - -3. Port Number - - - The port number is used to uniquely identify different applications. It acts as a communication end point between applications. - - The valid port number range from 1 - 65535. - The ports upto 1023 are reserved for well known services and hence are well-known ports. - Eg: 80 for ```HTTP```, 21 for ```FTP```, 22 for ```SSH``` - -4. Socket - - - A socket is a end point between two way communication. - - It defines a network connection as a Stream from which bytes can be read and similarly bytes can be sent. - - Java socket can be used to provide both connection-oriented (```TCP```) as well as connectionless (```UDP```). - diff --git a/notes/networking/ServerToClient/README.md b/notes/networking/ServerToClient/README.md deleted file mode 100644 index c469201f..00000000 --- a/notes/networking/ServerToClient/README.md +++ /dev/null @@ -1,14 +0,0 @@ -# Server to Client Connection - -This example demonstrates the messaging from server to the client. - -## Client Side Implementation -```java -{% include 'networking/ServerToClient/Client.java' %} -``` - - -## Server Side Implementation -```java -{% include 'networking/ServerToClient/Server.java' %} -``` diff --git a/notes/networking/SocketProgramming/README.md b/notes/networking/SocketProgramming/README.md deleted file mode 100644 index 8e62e70a..00000000 --- a/notes/networking/SocketProgramming/README.md +++ /dev/null @@ -1,27 +0,0 @@ -# Socket Programming -- Java Socket Programming is used for communication between the application running on different machine. -- Java Socket Programming support : - -| Connection Oriented | Connection-Less | -|-----------------------|-----------------| -| Classes Used : | Classes Used : | -| 1. ```Socket``` | 1. ```DatagramSocket``` | -| 2. ```ServerSocket``` | 2. ```DatagramPacket``` | - - Client in socket programming must know : -- IP Adress - -|Socket Class|ServerSocket Class| -|-|-| -|This method is used to create a socket.|This class is used to create a ServerSocket.| -|**Methods**|**Methods**| -|- ```public InputStream getInputStream()```|- ```public Socket accept()```| -|- ```public OutputStream getOutputStream()```|- ```public synchronized void close()```| -|- ```public synchronized void close()```|| - - -## Implementation -```java -{% include 'networking/SocketProgramming/TryWithResources.java' %} -``` - diff --git a/notes/networking/UDPMessaging/README.md b/notes/networking/UDPMessaging/README.md deleted file mode 100644 index d6abd967..00000000 --- a/notes/networking/UDPMessaging/README.md +++ /dev/null @@ -1,12 +0,0 @@ -# UDP Messaging - -## Client Side Implementation -```java -{% include 'networking/UDPMessaging/UDPClient.java' %} -``` - - -## Server Side Implementation -```java -{% include 'networking/UDPMessaging/UDPServer.java' %} -``` diff --git a/notes/networking/URL/README.md b/notes/networking/URL/README.md deleted file mode 100644 index 7126a3a4..00000000 --- a/notes/networking/URL/README.md +++ /dev/null @@ -1,26 +0,0 @@ -# URL Class - -```http://abc.com:8080/test.php``` - -## Constructors - -1. ```public URl (String protocol, String host, int port, String file)``` -2. ```public URl (String protocol, String host, String file)``` -3. ```public URl (URL Contex String url)``` -4. ```public URl (String url)``` - - -## Methods - -1. ```public String getProtocol()``` -1. ```public String getHost()``` -1. ```public String getPort()``` -1. ```public String getFile()``` -1. ```public String getQuery()``` // ?name = "GCES" - - - -## Implementation -```java -{% include 'networking/URL/URLDemo.java' %} -``` diff --git a/notes/networking/URLConnection/README.md b/notes/networking/URLConnection/README.md deleted file mode 100644 index c2652df4..00000000 --- a/notes/networking/URLConnection/README.md +++ /dev/null @@ -1,6 +0,0 @@ -# URL Connection - -## Implementation -```java -{% include 'networking/URLConnection/URLConnectionDemo.java' %} -``` diff --git a/notes/networking/chatApplication/README.md b/notes/networking/chatApplication/README.md deleted file mode 100644 index f6ca06e3..00000000 --- a/notes/networking/chatApplication/README.md +++ /dev/null @@ -1,13 +0,0 @@ -# Client to Server Messaging - -This example demonstrates the messaging from client to the server. - -## Client Side Implmentation -```java -{% include 'networking/chatApplication/Arjun.java' %} -``` - -## Server Side Implementation -```java -{% include 'networking/chatApplication/GCESServer.java' %} -``` diff --git a/notes/networking/checkInternetConnection/README.md b/notes/networking/checkInternetConnection/README.md deleted file mode 100644 index 4f466c38..00000000 --- a/notes/networking/checkInternetConnection/README.md +++ /dev/null @@ -1,6 +0,0 @@ -# Check Internet Connection - -## Implementation -```java -{% include 'networking/checkInternetConnection/IsInternetAvailable.java' %} -``` diff --git a/notes/networking/dualConnection/README.md b/notes/networking/dualConnection/README.md deleted file mode 100644 index 4c35851e..00000000 --- a/notes/networking/dualConnection/README.md +++ /dev/null @@ -1,15 +0,0 @@ -# Dual Connection - -This example demonstrates the dual connection between the client and the server. -The client sends a number as a payload to the server and server returns the square of that number. - - -## Client Side Implementation -```java -{% include 'networking/dualConnection/Server.java' %} -``` - -## Server Side Implementation -```java -{% include 'networking/dualConnection/Server.java' %} -``` diff --git a/notes/networking/whoisImplementation/README.md b/notes/networking/whoisImplementation/README.md deleted file mode 100644 index ac79a6e4..00000000 --- a/notes/networking/whoisImplementation/README.md +++ /dev/null @@ -1,6 +0,0 @@ -# WHOIS Implementation - -## Implementation -```java -{% include 'networking/whoisImplementation/Whois.java' %} -``` diff --git a/notes/oop/classesObjects/accessModifiers/README.md b/notes/oop/classesObjects/accessModifiers/README.md deleted file mode 100644 index 66518ac9..00000000 --- a/notes/oop/classesObjects/accessModifiers/README.md +++ /dev/null @@ -1,14 +0,0 @@ -# Access Modifiers/ Control - -- Encapsulation provides anoter important attribute: access Control - -![accessKeywords](https://qph.fs.quoracdn.net/main-qimg-da076fc27ef10e5b8e05e7d252e183e6.webp) - -- Following tables summarizes what Java constructs each Java access control can be applied. - -![accessKeywordTable](https://www.cdn.geeksforgeeks.org/wp-content/uploads/Access-Modifiers-in-Java.png) - -The given table can be visualized as : - - -![accessKeywordTable](https://www.studytonight.com/java/images/access-modifier.jpg) diff --git a/notes/oop/classesObjects/constructor/README.md b/notes/oop/classesObjects/constructor/README.md deleted file mode 100644 index 7d167b2c..00000000 --- a/notes/oop/classesObjects/constructor/README.md +++ /dev/null @@ -1,8 +0,0 @@ -# Constructor - -![constructor](https://static.javatpoint.com/images/core/java-constructor.png) - -- A constructor initializes an object immediately upon creation. -- Constuctor has same name as the class it resides and it syntactically similar to a method. -- No return type no void. This is because the implicit return type of a class constructor is the class type itself. -- If not constructor provided, java itself create default constructor and assin default value to the variable. \ No newline at end of file diff --git a/notes/oop/classesObjects/final/README.md b/notes/oop/classesObjects/final/README.md deleted file mode 100644 index 9b689b05..00000000 --- a/notes/oop/classesObjects/final/README.md +++ /dev/null @@ -1,24 +0,0 @@ -# Final - -- A field can be declared as final. Doing so prevents its contents from being modified making it essentially a constant. -- Must initialize a final field when it is declared. -- You ca do this in one of two ways : - 1. You can give it a value whn it is declared. - - public class Sample{ - final int h = 8; - } - - 2. You can assign it a value within a constructor. - - public class Sample{ - final int h; - Sample(){ - h = 8; - } - } - - 3. You can't do like this : - - final int a; - a = 8; \ No newline at end of file diff --git a/notes/oop/classesObjects/nestedInnerClass/README.md b/notes/oop/classesObjects/nestedInnerClass/README.md deleted file mode 100644 index 9b974029..00000000 --- a/notes/oop/classesObjects/nestedInnerClass/README.md +++ /dev/null @@ -1,12 +0,0 @@ -# Nested and Inner Class - -It is possible to define a class within another class, such classes are knoen as nested classes. -The scope of a nested class is bounded by the scopoe of its enclosing class. - - class A{ // Enclosing class - class B{ // Inner Class - // Can Access All - } - } - -It is important to realize that an instance of inner class can be created only in the context of outer class. \ No newline at end of file diff --git a/notes/oop/classesObjects/simpleClass/AssigningObjectReferenceVariables/README.md b/notes/oop/classesObjects/simpleClass/AssigningObjectReferenceVariables/README.md deleted file mode 100644 index 274ad4bf..00000000 --- a/notes/oop/classesObjects/simpleClass/AssigningObjectReferenceVariables/README.md +++ /dev/null @@ -1,3 +0,0 @@ -# Assigning Object Reference Objects - -We might think that myBoxReferrer is being assigned a reference to a copy of the object referred to by myBox. That is, we might think that myBox and myBoxReferrer to a separate and distinct objects, However this would be wrong. Instead after this fragment executes myBox and myBoxReferrer will both refer to the same object. The assignment of myBox and myBoxReferrer did not allocate any memory or copy any part of the original object. It simply makes myBoxReferrer refer to the same object as does myBox, Thus, any changes made to the object through myBoxReferrer will affect the object to which myBox is referring, since they are the same object. \ No newline at end of file diff --git a/notes/oop/classesObjects/static/README.md b/notes/oop/classesObjects/static/README.md deleted file mode 100644 index 52fa3d12..00000000 --- a/notes/oop/classesObjects/static/README.md +++ /dev/null @@ -1,15 +0,0 @@ -# Static - -- When a member is declared static, it ca be accessed before any objects of its class are created and without reference to any object. -- Can declare on both methods and variables to be static. -- Instance variable declared as static are essentially global variable. -- When objects of its class are declaredm no copy of static vaiable is made. -- All instances of the class share the class static variable. -- Syntax to retrieve class variable and method : - ``` ClassName.variable; - ClassName.method();``` - -- Methods declared as static have several restrictions: - 1. Thery can onlny directly call other static methods. - 2. They can only directly access static data. - 3. They cannot refer to this or super in anyway. \ No newline at end of file diff --git a/notes/oop/inheritance/AbstractClass/README.md b/notes/oop/inheritance/AbstractClass/README.md deleted file mode 100644 index 4775258e..00000000 --- a/notes/oop/inheritance/AbstractClass/README.md +++ /dev/null @@ -1,28 +0,0 @@ -# Abstract Class - -![Abstract Class Image](https://www.guru99.com/images/uploads/2012/06/java-abstract-classes.jpg) -- There are situations in which you will want to define a superclass that declares the structure of a given abstration without providing a complete implement ation of every method. -- That is, sometimes you will want to create a superclass that only defines a generalized form that will be shared by all of its subclasses, leaving it to each subclass to fill in the detail. -- One way this situation can occur is when a superclass is unable to create a meaningful implementation for a method. -- When you want some way to ensure that a subclass does, indeed, override all necessary methods. Java's solution is the abstract method. - -> Syntax of abstract method : - - abstract typeName (parameter List); // No body - -> Example: - - abstract void sum(int a, int b); // No body - -- These abstract methods are sometimes referred to as sub classes responsibility because they have no implementation specified in the superclass. Thus subclass must override them. -- Any class that contains one or more abstract methods must also be declared abstract. - -> Example: - - abstract class A{ - // code goes here. - } - -- Abstract class cannot e directly instantiated with new operator i.e. no object. -- Cannot declare abstract constructor or abstract static method. -- Any subclass of an abstract class must either implement all of the abstract methods or be declared abstract itself. \ No newline at end of file diff --git a/notes/oop/inheritance/README.md b/notes/oop/inheritance/README.md deleted file mode 100644 index 007ddef0..00000000 --- a/notes/oop/inheritance/README.md +++ /dev/null @@ -1,16 +0,0 @@ -# Inheritance - - Super Class --> Sub Class --> Includes all of the member of its superclass. - -- uses 'extends' keyword. -- Being a superclass for a subclass doesnot mean that the superclass cannot be send by itself. -- Further, a class can be a super class for another subclass. - -General Form : - - class SubClassName extends SuperClassName{ - // codes goes here - } - -- Java doesn't support multiple inheritance. -- Subclass cannot access private members of the superclass. \ No newline at end of file diff --git a/notes/oop/inheritance/finalWithInheritance/README.md b/notes/oop/inheritance/finalWithInheritance/README.md deleted file mode 100644 index 86728c20..00000000 --- a/notes/oop/inheritance/finalWithInheritance/README.md +++ /dev/null @@ -1,24 +0,0 @@ -# Final with Inheritance - -1. as constant -2. Final to prevent overriding inheritance - - class A{ - final void mOne(){ - //code goes here. - } - } - class B extends A{ - void m1(){ // Illegal ; overriding is prohibited. - - } - } - -3. To prevent inheritance - - final class A{ - // code goes here - } - class B extends A{ // Error - // code goes here - } diff --git a/notes/oop/inheritance/interface/Extended/README.md b/notes/oop/inheritance/interface/Extended/README.md deleted file mode 100644 index 0bcb98e0..00000000 --- a/notes/oop/inheritance/interface/Extended/README.md +++ /dev/null @@ -1,29 +0,0 @@ -# Extending Interfaces - -An interface can extend another interface in the same way that a class can extend another class. The extends keyword is used to extend an interface, and the child interface inherits the methods of the parent interface. - -The following Sports interface is extended by Hockey and Football interfaces. -Example - - // Filename: Sports.java - public interface Sports { - public void setHomeTeam(String name); - public void setVisitingTeam(String name); - } - - // Filename: Football.java - public interface Football extends Sports { - public void homeTeamScored(int points); - public void visitingTeamScored(int points); - public void endOfQuarter(int quarter); - } - - // Filename: Hockey.java - public interface Hockey extends Sports { - public void homeGoalScored(); - public void visitingGoalScored(); - public void endOfPeriod(int period); - public void overtimePeriod(int ot); - } - -The Hockey interface has four methods, but it inherits two from Sports; thus, a class that implements Hockey needs to implement all six methods. Similarly, a class that implements Football needs to define the three methods from Football and the two methods from Sports. \ No newline at end of file diff --git a/notes/oop/inheritance/interface/NestedInterface/README.md b/notes/oop/inheritance/interface/NestedInterface/README.md deleted file mode 100644 index e53ebc25..00000000 --- a/notes/oop/inheritance/interface/NestedInterface/README.md +++ /dev/null @@ -1,17 +0,0 @@ -# Nested Interface - -**We can declare an interface in another interface or class. Such an interface is termed as a nested interface.** - -Following are the rules governing a nested interface. - -1. A nested interface declared within an interface must be public. -2. A nested interface declared within a class can have any access modifier. -3. A nested interface is by default static. - -Such interface can be declared a member of class or another interface such as interface is called a member interface. It can be declared as public, protected or private. - - interface OuterInterface{ - interface InnerInterface{ - // code goes here. - } - } \ No newline at end of file diff --git a/notes/oop/inheritance/interface/README.md b/notes/oop/inheritance/interface/README.md deleted file mode 100644 index 084cf57e..00000000 --- a/notes/oop/inheritance/interface/README.md +++ /dev/null @@ -1,52 +0,0 @@ -# Interface - -> 28th December 2018, Arjun Adhikari - -- Using the keyword 'interface', you can fully abstract a class interface from its implementation. -- That is, using interface, you can specify what a class must do, but not how it does it. -- They are syntactically similar to classes, but they lack instance variables ad then methods are declared without any body. -- Interfaces are designed to support dynamic method resolution at run time. - -## Defining an Interface - - accessModifier interface name{ - - returnType methodName(parameterList); // public/abstract method; before JDK 8 - type final varNameOne = value; // final/static - - } - -But beginning with JDK 8, it is possible to add a default implementation to an interface method. Thus it is now possible for interface to specify some behaviour. - - default void mOne(){ - // code goes here - } - -## Implementing Interface - - class className [extends superClass] [interface interfaceOne, interfaceTwo]{ - //code goes here - } - -- When you implement an interface method, it must be declared as public. -- Method should be public in interface. -- Class member variable should either be PUBLIC or STATIC. -- The method inside interface can contain the body, if it is DEFAULT. - -> Why do we use interface ? - - - It is used to achieve total abstraction. - - Since java does not support multiple inheritance in case of class, but by using interface it can achieve multiple inheritance . - - It is also used to achieve loose coupling. - -> Interfaces are used to implement abstraction. So the question arises why use interfaces when we have abstract classes? - - - The reason is, abstract classes may contain non-final variables, whereas variables in interface are final, public and static. - -# Interface can be extended. - -If we want to extend the interface or class, following keywords are used. -Interface -> Interface (extends) -Class -> Class (extends) -Class -> Interface (implements) -Class -> Abstract Class (extends) \ No newline at end of file diff --git a/notes/oop/inheritance/methodOverRiding/DynamicMethodDispatch/README.md b/notes/oop/inheritance/methodOverRiding/DynamicMethodDispatch/README.md deleted file mode 100644 index 2b81a3f9..00000000 --- a/notes/oop/inheritance/methodOverRiding/DynamicMethodDispatch/README.md +++ /dev/null @@ -1,8 +0,0 @@ -# Dynamic Method Dispatch -## How Java implements run-time polymorphism ? - -![Dynamic Method Dispatch Image](https://i.ibb.co/59N2bmd/viber-image-2020-02-24-18-15-23.jpg) - -- Overiding method allow Java to support run-time polymorphism. -- Dynamic method dispatch is the mechanism by which a call to an overridden method is resolved at run time, rather than compile time. -- The type of the ovject being referred to that determine which version of an overridden method will be executed. \ No newline at end of file diff --git a/notes/oop/inheritance/methodOverRiding/README.md b/notes/oop/inheritance/methodOverRiding/README.md deleted file mode 100644 index 8069b3be..00000000 --- a/notes/oop/inheritance/methodOverRiding/README.md +++ /dev/null @@ -1,6 +0,0 @@ -# Method Overriding - -- In a class hierarchy, when a method in a subclass has the same name and the type signature as a method in its superclass, then the method in the subclass is said to override the method in the superclass. -- When an overridden method is called from within its subclass, it will always reger to the version of that method defined by the subclass. -- The version of the method defined by the superclass will be hidden. -- If we need to invoke version of superclass, we must use super inside the subclass. \ No newline at end of file diff --git a/notes/oop/inheritance/super/README.md b/notes/oop/inheritance/super/README.md deleted file mode 100644 index 7a89eb65..00000000 --- a/notes/oop/inheritance/super/README.md +++ /dev/null @@ -1,13 +0,0 @@ -# Super - -Using ```super()``` : - -- Whenever a sub class needs to refer to its immediate superclass, it can do so by use of the keyword ```super```. -- ```super()``` has two general forms : - 1. The first calls the super class constructor. - 2. It is used to access a member of the super class that has been hidden by member of a subclass. - - - ```super()``` must always be the first statement executed inside a subclass constructor. - - When constructor are executed in inheritance? -- Order of Derivation \ No newline at end of file diff --git a/notes/oop/usingPackage/README.md b/notes/oop/usingPackage/README.md deleted file mode 100644 index 62967b19..00000000 --- a/notes/oop/usingPackage/README.md +++ /dev/null @@ -1,108 +0,0 @@ -# Packages -- They are containers for classes. -- Package allows you to create a class named ABC, which you can store in your own package without concern that it will collide with some other class named ABC stored elsewhere. -- Java provides a mechanism for partitioning the class name space more manageable chunks. This mechanism is referred as package. -- Package is both a naming and a visibility ⏩ "default" control mechanism. - -## Defining a Package - -> To create: -- include a package command as the first statement in a Java source file. -- Any classes declared within that file will belong to the specified package. -- If you omit the package statement, the class names are put into the default package, which has no name. - ->In C and C++, header file - -Syntax : - - package package_name; - -- Java uses file system directories to store packages. -- For example, the .class files for any classes you declare to be part of myPackage must be stored in directory called MyPackage. - -> Directory name must match the package name exactly. - -- Can create a hierarchy of package - - package com.nepal.java - com \ nepal \ java - -## Finding Packages and CLASSPATH -> How does the Java runtime system know where to look for package that you create ? - -- First, by default, the Java runtime system uses the current working directory as its starting point. Thus, if your package is in a sub directory of the current directory, it will be found. -- Second, you can specify a directory path or paths by setting CLASSPATH environment variable. -- Third, can use - CLASSPATH option with Java and javac to specify the path to your classes. - -## Importing Packages ->Case I - - // We can only use Date class in program. - - import java.util.Date; - class MyDate extends Date{ - - } - ->Case II - - // We can use every classes of util packages in program. - - import java.util.*; - class MyDate extends Date{ - - } - ->Case III - - // We can use any class we want; FQPM = Fully Qualified Package Name - - class MyDate extends java.util.Date{ - - } - - -## Types of packages - -1. User defined packages -- Defined by the developers as poer their applicaion requirements. - - - Package abc; - Package bac; - Package cba; - class Test{ - - } - - -2. Pre Defined Packages - -- are defined by java programming language and provide along with java software. - -i. exampleOne : ```java.lang``` -- This is default packagem no need to import in JAVA. It is able to include all basic classes and interfaces which are required to prepare basic program system, object, String Buffer, String Builder Thread, Runnable, All Wrapper Classes (Byte, Short), Exception and its sub class come under ```java.lang```. - -ii. exampleTwo : ```java.io``` -- To perform input and output operation. -- InputStream, ByteArrayInputStream, FileInputStream, OutputStream, Reader, Writer etc. - -iii. exampleThree : ```java.util``` -- Representing all data structures. -- List, Array List, Vector, Stack, LinkedList, Set, HasSet, Queue, SortedSet, Map, HashMap etc. - -iv. exampleFour : ```java.awt``` -- To prepare GUI application -- Frame, Button, Label, List, TextField, TextArea etc. - -v. exampleFive : ```javax.swing``` -- To prepare GUI application -- To overcome drawbacks of ```awt``` - -vi. exampleSix : ```java.net``` -- To prepare distributed application on the basis of Socket Programming -- Socket, URL, URLConnection - -vii. exampleSeven : ```java.sql``` -- To prepare JDBC applications -- Driver, Connection, Statement \ No newline at end of file diff --git a/notes/oop/usingPackage/tuts/README.md b/notes/oop/usingPackage/tuts/README.md deleted file mode 100644 index ea027380..00000000 --- a/notes/oop/usingPackage/tuts/README.md +++ /dev/null @@ -1,25 +0,0 @@ -# How to set CLASSPATH ? - -> For Windows: - -Follow the picture below : - -![WindowsTuts](https://i.ibb.co/Kx2hRjR/class-Path.png) - -> For MacOS/Linux : - -```export CLASSPATH = /home/arjun/Desktop/workspace/Java/oop/packages``` - -## Checking the CLASSPATH variable - -> For Windows: - -```echo %CLASSPATH%``` - -> For LINUX / MacOS: - -```echo $CLASSPATH``` - - - - diff --git a/notes/swing/COMPONENTS.md b/notes/swing/COMPONENTS.md deleted file mode 100644 index c1ef51cc..00000000 --- a/notes/swing/COMPONENTS.md +++ /dev/null @@ -1,21 +0,0 @@ -# Class Name For Swing Components - -1. ```JApplet``` -2. ```JColorChooser``` -3. ```JDialog``` -4. ```JFrame``` -5. ```JLayeredPane``` -6. ```JButton``` -7. ```JComboBox``` -8. ```JEditorPane``` -9. ```JInternalFrame``` -10. ```JList``` -11. ```JCheckBox``` -13. ```JFileChooser``` -14. ```JLable``` -15. ```JMenu``` -16. ```JCheckBoxMenuItem``` -17. ```JDesktopPanel``` -18. ```JFormattedTextField``` -19. ```Jlayer``` -20. ```JMenuBar``` \ No newline at end of file diff --git a/notes/swing/DIFFERENCES.md b/notes/swing/DIFFERENCES.md deleted file mode 100644 index 10d0c211..00000000 --- a/notes/swing/DIFFERENCES.md +++ /dev/null @@ -1,13 +0,0 @@ -# Differences Between AWT & Swing - -|SN| AWT | Swing | -|--|-----|-------| -|1.| Stands for Abstract Window Toolkit | Also known as JFC (Java Foundation Class) | -|2.| AWT components are called heavyweight components. | Swings are called light weight component because swing components sits on the top of AWT components and do the work. | -|3.| Require ```java.awt``` package | require ```javax.swing``` package | -|4.| AWT components are platform dependent.| Swing components are made in purely java and they are platform independent. | -| 5. | Less Component | More component and rich functionality. | -| 6. | Pseudo Code here | Pseudo Code here | - - - diff --git a/notes/swing/HIERARCHY.md b/notes/swing/HIERARCHY.md deleted file mode 100644 index bb9ff3e8..00000000 --- a/notes/swing/HIERARCHY.md +++ /dev/null @@ -1,3 +0,0 @@ -# Hierarchy of Swing Components - -![Hierarchy of Swing Components](https://www3.ntu.edu.sg/home/ehchua/programming/java/images/Swing_JComponentClassDiagram.png) \ No newline at end of file diff --git a/notes/swing/multiCasting/MULTICASTING.md b/notes/swing/multiCasting/MULTICASTING.md deleted file mode 100644 index 92c4adc9..00000000 --- a/notes/swing/multiCasting/MULTICASTING.md +++ /dev/null @@ -1,5 +0,0 @@ -# Multicasting - -- Several event sources can react to the same event listener and vice versa. -- AWT event sources support a multicast model for listeners. -- This means that the same event can be sent to more than one listener object. diff --git a/notes/variables/README.md b/notes/variables/README.md deleted file mode 100644 index 990ebb67..00000000 --- a/notes/variables/README.md +++ /dev/null @@ -1,95 +0,0 @@ -# Variables - -## Types of Variables - -A. Based on the type of volume -1. Primitive Variables - - int x = 10; -2. Reference Variables - - Student s = new Student (); - -B. Based on the position of declaration or behaviour -1. Instance Variable - - class Student{ - String name; - int rollNo; - } - - s1.name = "Nishal" // Student One - s1.rollNo = 20; - - s2.name = "Biswas" // Student One - s2.rollNo = 8; - -- For every object separate copy of name and rollno is created. This type of variable is instance variable. -- Instance variable are declared within a class and outside of method / block / constructor. -- Instance variable are created at the time of object creation and destroyed when object is destroyed. -- They are also known as attributes. - -2. Static Variable -- If the value of variable doesn't varies from object to object , we create static variable - - class Student{ - static String name; - } - - name = "Nishal" // Student One; Student Two -- Are declared inside class but outside of any method / block / constructor. - - - Scope - ⏩ Created at the time of class loading and destroyed at the time of class unloading. - -3. Local Variable - - [method] - void mOne{ - int x = 10; // is not available outside mOne method. - } - - [block] - for(int i = 0; i<5; i++){ - System.out.println(i); // is not available outside for loop. - } - - [constructor] - Test(){ - int x = 10; // is not available outside constructor. - } - - - aka Local / Temporary / Stack / Automatic - - are stored in stack memory. - - Scope : - ⏩ Destroyed after finishing method / block / constructor - - For every thread separate, local variable is created. - - For local variable, JVM won't provide default value. So, we must provide value explicitly before using it. - - For local variable, the only applicable modifier is final. - -## Examples -#### Life Time Of Variables -```java -{% include 'variables/lifeTImeOfVariable.java' %} -``` - -#### Scope of Variables - I -```java -{% include 'variables/scopeOfVariables.java' %} -``` - -#### Scope of Variables - II -```java -{% include 'variables/scopeOfVariablesOne.java' %} -``` - - -#### Dynamic Initialization of Variables -```java -{% include 'variables/dynamicInitializationOfVariables.java' %} -``` - -#### Type Conversion -```java -{% include 'variables/typeconversion.java' %} -``` diff --git a/notes/oop/classesObjects/accessModifiers/Movie.java b/oop/classesObjects/accessModifiers/Movie.java similarity index 100% rename from notes/oop/classesObjects/accessModifiers/Movie.java rename to oop/classesObjects/accessModifiers/Movie.java diff --git a/oop/classesObjects/accessModifiers/index.html b/oop/classesObjects/accessModifiers/index.html new file mode 100644 index 00000000..5691f4c3 --- /dev/null +++ b/oop/classesObjects/accessModifiers/index.html @@ -0,0 +1,1384 @@ + + + + + + + + + + + + + + + + + + Access Modifiers/ Control - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Access Modifiers/ Control

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    accessKeywords

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    • Following tables summarizes what Java constructs each Java access control can be applied.
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    accessKeywordTable

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    The given table can be visualized as :

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    accessKeywordTable

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    Constructor

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    constructor

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    • A constructor initializes an object immediately upon creation.
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    • Constuctor has same name as the class it resides and it syntactically similar to a method.
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    • No return type no void. This is because the implicit return type of a class constructor is the class type itself.
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      You ca do this in one of two ways :

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        You can give it a value whn it is declared.

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+    final int h = 8;
+}
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        You can assign it a value within a constructor.

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+    final int h;
+    Sample(){
+        h = 8;
+    }
+}
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        You can't do like this :

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    Nested and Inner Class

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    It is possible to define a class within another class, such classes are knoen as nested classes. +The scope of a nested class is bounded by the scopoe of its enclosing class.

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    class A{ // Enclosing class
+    class B{ // Inner Class 
+                // Can Access All    
+    }
+}
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    It is important to realize that an instance of inner class can be created only in the context of outer class.

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    Assigning Object Reference Objects

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    We might think that myBoxReferrer is being assigned a reference to a copy of the object referred to by myBox. That is, we might think that myBox and myBoxReferrer to a separate and distinct objects, However this would be wrong. Instead after this fragment executes myBox and myBoxReferrer will both refer to the same object. The assignment of myBox and myBoxReferrer did not allocate any memory or copy any part of the original object. It simply makes myBoxReferrer refer to the same object as does myBox, Thus, any changes made to the object through myBoxReferrer will affect the object to which myBox is referring, since they are the same object.

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    Static

    +
      +
    • When a member is declared static, it ca be accessed before any objects of its class are created and without reference to any object.
      • +
    • Can declare on both methods and variables to be static.
      • +
    • Instance variable declared as static are essentially global variable.
      • +
    • When objects of its class are declaredm no copy of static vaiable is made.
      • +
    • All instances of the class share the class static variable.
      • +
    • +

      Syntax to retrieve class variable and method :
      +ClassName.variable; + ClassName.method();

      +
      • +
    • +

      Methods declared as static have several restrictions:

      +
        +
      1. Thery can onlny directly call other static methods.
        2. +
      2. They can only directly access static data.
        3. +
      3. They cannot refer to this or super in anyway.
        4. +
      +
      • +
    + + +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassFour/AbstractDemo.java b/oop/inheritance/AbstractClass/AbstractClassFour/AbstractDemo.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassFour/AbstractDemo.java rename to oop/inheritance/AbstractClass/AbstractClassFour/AbstractDemo.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassFour/Circle.java b/oop/inheritance/AbstractClass/AbstractClassFour/Circle.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassFour/Circle.java rename to oop/inheritance/AbstractClass/AbstractClassFour/Circle.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassFour/Shape.java b/oop/inheritance/AbstractClass/AbstractClassFour/Shape.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassFour/Shape.java rename to oop/inheritance/AbstractClass/AbstractClassFour/Shape.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassOne/AbstractAreas.java b/oop/inheritance/AbstractClass/AbstractClassOne/AbstractAreas.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassOne/AbstractAreas.java rename to oop/inheritance/AbstractClass/AbstractClassOne/AbstractAreas.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassOne/Figure.java b/oop/inheritance/AbstractClass/AbstractClassOne/Figure.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassOne/Figure.java rename to oop/inheritance/AbstractClass/AbstractClassOne/Figure.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassOne/Rectangle.java b/oop/inheritance/AbstractClass/AbstractClassOne/Rectangle.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassOne/Rectangle.java rename to oop/inheritance/AbstractClass/AbstractClassOne/Rectangle.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassOne/Triangle.java b/oop/inheritance/AbstractClass/AbstractClassOne/Triangle.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassOne/Triangle.java rename to oop/inheritance/AbstractClass/AbstractClassOne/Triangle.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassThree/AbstractDemo.java b/oop/inheritance/AbstractClass/AbstractClassThree/AbstractDemo.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassThree/AbstractDemo.java rename to oop/inheritance/AbstractClass/AbstractClassThree/AbstractDemo.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassThree/Huawei.java b/oop/inheritance/AbstractClass/AbstractClassThree/Huawei.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassThree/Huawei.java rename to oop/inheritance/AbstractClass/AbstractClassThree/Huawei.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassThree/Iphone.java b/oop/inheritance/AbstractClass/AbstractClassThree/Iphone.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassThree/Iphone.java rename to oop/inheritance/AbstractClass/AbstractClassThree/Iphone.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassThree/Phone.java b/oop/inheritance/AbstractClass/AbstractClassThree/Phone.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassThree/Phone.java rename to oop/inheritance/AbstractClass/AbstractClassThree/Phone.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassTwo/AbstractDemo.java b/oop/inheritance/AbstractClass/AbstractClassTwo/AbstractDemo.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassTwo/AbstractDemo.java rename to oop/inheritance/AbstractClass/AbstractClassTwo/AbstractDemo.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassTwo/ArjunPhone.java b/oop/inheritance/AbstractClass/AbstractClassTwo/ArjunPhone.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassTwo/ArjunPhone.java rename to oop/inheritance/AbstractClass/AbstractClassTwo/ArjunPhone.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassTwo/SamirPhone.java b/oop/inheritance/AbstractClass/AbstractClassTwo/SamirPhone.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassTwo/SamirPhone.java rename to oop/inheritance/AbstractClass/AbstractClassTwo/SamirPhone.java diff --git a/notes/oop/inheritance/AbstractClass/AbstractClassTwo/SumanPhone.java b/oop/inheritance/AbstractClass/AbstractClassTwo/SumanPhone.java similarity index 100% rename from notes/oop/inheritance/AbstractClass/AbstractClassTwo/SumanPhone.java rename to oop/inheritance/AbstractClass/AbstractClassTwo/SumanPhone.java diff --git a/oop/inheritance/AbstractClass/index.html b/oop/inheritance/AbstractClass/index.html new file mode 100644 index 00000000..3f88dd01 --- /dev/null +++ b/oop/inheritance/AbstractClass/index.html @@ -0,0 +1,1405 @@ + + + + + + + + + + + + + + + + + + Abstract Class - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Abstract Class

    +

    Abstract Class Image +- There are situations in which you will want to define a superclass that declares the structure of a given abstration without providing a complete implement ation of every method. +- That is, sometimes you will want to create a superclass that only defines a generalized form that will be shared by all of its subclasses, leaving it to each subclass to fill in the detail. +- One way this situation can occur is when a superclass is unable to create a meaningful implementation for a method. +- When you want some way to ensure that a subclass does, indeed, override all necessary methods. Java's solution is the abstract method.

    +
    +

    Syntax of abstract method :

    +
    +
        abstract typeName (parameter List); // No body
+
    +
    +

    Example:

    +
    +
        abstract void sum(int a, int b); // No body
+
    +
      +
    • These abstract methods are sometimes referred to as sub classes responsibility because they have no implementation specified in the superclass. Thus subclass must override them.
      • +
    • Any class that contains one or more abstract methods must also be declared abstract.
      • +
    +
    +

    Example:

    +
    +
        abstract class A{
+        // code goes here.
+    }
+
    +
      +
    • Abstract class cannot e directly instantiated with new operator i.e. no object.
      • +
    • Cannot declare abstract constructor or abstract static method.
      • +
    • Any subclass of an abstract class must either implement all of the abstract methods or be declared abstract itself.
      • +
    + + +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/oop/inheritance/Box.java b/oop/inheritance/Box.java similarity index 100% rename from notes/oop/inheritance/Box.java rename to oop/inheritance/Box.java diff --git a/notes/oop/inheritance/BoxDemo.java b/oop/inheritance/BoxDemo.java similarity index 100% rename from notes/oop/inheritance/BoxDemo.java rename to oop/inheritance/BoxDemo.java diff --git a/notes/oop/inheritance/BoxWeight.java b/oop/inheritance/BoxWeight.java similarity index 100% rename from notes/oop/inheritance/BoxWeight.java rename to oop/inheritance/BoxWeight.java diff --git a/notes/oop/inheritance/derivation/OrderDerivation.java b/oop/inheritance/derivation/OrderDerivation.java similarity index 100% rename from notes/oop/inheritance/derivation/OrderDerivation.java rename to oop/inheritance/derivation/OrderDerivation.java diff --git a/oop/inheritance/finalWithInheritance/index.html b/oop/inheritance/finalWithInheritance/index.html new file mode 100644 index 00000000..ca84bc9a --- /dev/null +++ b/oop/inheritance/finalWithInheritance/index.html @@ -0,0 +1,1401 @@ + + + + + + + + + + + + + + + + + + Final with Inheritance - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
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    + + + + + + + + +

    Final with Inheritance

    +
      +
    1. as constant
      2. +
    2. +

      Final to prevent overriding inheritance

      +
      class A{
+    final void mOne(){
+        //code goes here.
+    }
+}
+class B extends A{
+    void m1(){ // Illegal ; overriding is prohibited.
+
+    }
+}
+
      +
      3. +
    3. +

      To prevent inheritance

      +
      final class A{
+    // code goes here
+}
+class B extends A{ // Error
+    // code goes here
+}
+
      +
      4. +
    + + +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/oop/inheritance/index.html b/oop/inheritance/index.html new file mode 100644 index 00000000..dc6913af --- /dev/null +++ b/oop/inheritance/index.html @@ -0,0 +1,1390 @@ + + + + + + + + + + + + + + + + + + Inheritance - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Inheritance

    +
        Super Class --> Sub Class --> Includes all of the member of its superclass.
+
    +
      +
    • uses 'extends' keyword.
      • +
    • Being a superclass for a subclass doesnot mean that the superclass cannot be send by itself.
      • +
    • Further, a class can be a super class for another subclass.
      • +
    +

    General Form :

    +
        class SubClassName extends SuperClassName{
+        // codes goes here
+    }
+
    +
      +
    • Java doesn't support multiple inheritance.
      • +
    • Subclass cannot access private members of the superclass.
      • +
    + + +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/oop/inheritance/interface/Circle.java b/oop/inheritance/interface/Circle.java similarity index 100% rename from notes/oop/inheritance/interface/Circle.java rename to oop/inheritance/interface/Circle.java diff --git a/oop/inheritance/interface/Extended/index.html b/oop/inheritance/interface/Extended/index.html new file mode 100644 index 00000000..c2ea0112 --- /dev/null +++ b/oop/inheritance/interface/Extended/index.html @@ -0,0 +1,1399 @@ + + + + + + + + + + + + + + + + + + Extending Interfaces - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Extending Interfaces

    +

    An interface can extend another interface in the same way that a class can extend another class. The extends keyword is used to extend an interface, and the child interface inherits the methods of the parent interface.

    +

    The following Sports interface is extended by Hockey and Football interfaces. +Example

    +
        // Filename: Sports.java
+    public interface Sports {
+    public void setHomeTeam(String name);
+    public void setVisitingTeam(String name);
+    }
+
+    // Filename: Football.java
+    public interface Football extends Sports {
+    public void homeTeamScored(int points);
+    public void visitingTeamScored(int points);
+    public void endOfQuarter(int quarter);
+    }
+
+    // Filename: Hockey.java
+    public interface Hockey extends Sports {
+    public void homeGoalScored();
+    public void visitingGoalScored();
+    public void endOfPeriod(int period);
+    public void overtimePeriod(int ot);
+    }
+
    +

    The Hockey interface has four methods, but it inherits two from Sports; thus, a class that implements Hockey needs to implement all six methods. Similarly, a class that implements Football needs to define the three methods from Football and the two methods from Sports.

    + + +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/oop/inheritance/interface/Graphics.java b/oop/inheritance/interface/Graphics.java similarity index 100% rename from notes/oop/inheritance/interface/Graphics.java rename to oop/inheritance/interface/Graphics.java diff --git a/notes/oop/inheritance/interface/InterfaceDemo.java b/oop/inheritance/interface/InterfaceDemo.java similarity index 100% rename from notes/oop/inheritance/interface/InterfaceDemo.java rename to oop/inheritance/interface/InterfaceDemo.java diff --git a/notes/oop/inheritance/interface/NestedInterface/Animal.java b/oop/inheritance/interface/NestedInterface/Animal.java similarity index 100% rename from notes/oop/inheritance/interface/NestedInterface/Animal.java rename to oop/inheritance/interface/NestedInterface/Animal.java diff --git a/notes/oop/inheritance/interface/NestedInterface/Dog.java b/oop/inheritance/interface/NestedInterface/Dog.java similarity index 100% rename from notes/oop/inheritance/interface/NestedInterface/Dog.java rename to oop/inheritance/interface/NestedInterface/Dog.java diff --git a/notes/oop/inheritance/interface/NestedInterface/NestedInterfaceDemo.java b/oop/inheritance/interface/NestedInterface/NestedInterfaceDemo.java similarity index 100% rename from notes/oop/inheritance/interface/NestedInterface/NestedInterfaceDemo.java rename to oop/inheritance/interface/NestedInterface/NestedInterfaceDemo.java diff --git a/oop/inheritance/interface/NestedInterface/index.html b/oop/inheritance/interface/NestedInterface/index.html new file mode 100644 index 00000000..610e6282 --- /dev/null +++ b/oop/inheritance/interface/NestedInterface/index.html @@ -0,0 +1,1388 @@ + + + + + + + + + + + + + + + + + + Nested Interface - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
    + +
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    Nested Interface

    +

    We can declare an interface in another interface or class. Such an interface is termed as a nested interface.

    +

    Following are the rules governing a nested interface.

    +
      +
    1. A nested interface declared within an interface must be public.
      2. +
    2. A nested interface declared within a class can have any access modifier.
      3. +
    3. A nested interface is by default static.
      4. +
    +

    Such interface can be declared a member of class or another interface such as interface is called a member interface. It can be declared as public, protected or private.

    +
        interface OuterInterface{
+        interface InnerInterface{
+            // code goes here.
+        }
+    }
+
    + + +
    +
    +
    + +
    + +
    + +
    +
    +
    + +
    + Copyright © 2020 Arjun Adhikari +
    + + +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/oop/inheritance/interface/Rectangle.java b/oop/inheritance/interface/Rectangle.java similarity index 100% rename from notes/oop/inheritance/interface/Rectangle.java rename to oop/inheritance/interface/Rectangle.java diff --git a/notes/oop/inheritance/interface/Shape.java b/oop/inheritance/interface/Shape.java similarity index 100% rename from notes/oop/inheritance/interface/Shape.java rename to oop/inheritance/interface/Shape.java diff --git a/oop/inheritance/interface/index.html b/oop/inheritance/interface/index.html new file mode 100644 index 00000000..2f6268ba --- /dev/null +++ b/oop/inheritance/interface/index.html @@ -0,0 +1,1449 @@ + + + + + + + + + + + + + + + + + + Interface - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Interface

    +
    +

    28th December 2018, Arjun Adhikari

    +
    +
      +
    • Using the keyword 'interface', you can fully abstract a class interface from its implementation.
      • +
    • That is, using interface, you can specify what a class must do, but not how it does it.
      • +
    • They are syntactically similar to classes, but they lack instance variables ad then methods are declared without any body.
      • +
    • Interfaces are designed to support dynamic method resolution at run time.
      • +
    +

    Defining an Interface

    +
        accessModifier interface name{
+
+        returnType methodName(parameterList); // public/abstract method; before JDK 8
+        type final varNameOne  = value; // final/static
+
+    }
+
    +

    But beginning with JDK 8, it is possible to add a default implementation to an interface method. Thus it is now possible for interface to specify some behaviour.

    +
        default void mOne(){
+        // code goes here
+    }
+
    +

    Implementing Interface

    +
        class className [extends superClass] [interface interfaceOne, interfaceTwo]{
+        //code goes here
+    }
+
    +
      +
    • When you implement an interface method, it must be declared as public.
      • +
    • Method should be public in interface.
      • +
    • Class member variable should either be PUBLIC or STATIC.
      • +
    • The method inside interface can contain the body, if it is DEFAULT.
      • +
    +
    +

    Why do we use interface ?

    +
    +
      +
    • It is used to achieve total abstraction.
      • +
    • Since java does not support multiple inheritance in case of class, but by using interface it can achieve multiple inheritance .
      • +
    • It is also used to achieve loose coupling.
      • +
    +
    +

    Interfaces are used to implement abstraction. So the question arises why use interfaces when we have abstract classes?

    +
    +
      +
    • The reason is, abstract classes may contain non-final variables, whereas variables in interface are final, public and static.
      • +
    +

    Interface can be extended.

    +

    If we want to extend the interface or class, following keywords are used.
    +Interface -> Interface (extends)
    +Class -> Class (extends)
    +Class -> Interface (implements)
    +Class -> Abstract Class (extends)

    + + +
    +
    +
    + +
    + +
    + +
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    + +
    + Copyright © 2020 Arjun Adhikari +
    + + +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/oop/inheritance/methodOverRiding/Animal.java b/oop/inheritance/methodOverRiding/Animal.java similarity index 100% rename from notes/oop/inheritance/methodOverRiding/Animal.java rename to oop/inheritance/methodOverRiding/Animal.java diff --git a/notes/oop/inheritance/methodOverRiding/DynamicMethodDispatch/DynamicMethodDispatch.java b/oop/inheritance/methodOverRiding/DynamicMethodDispatch/DynamicMethodDispatch.java similarity index 100% rename from notes/oop/inheritance/methodOverRiding/DynamicMethodDispatch/DynamicMethodDispatch.java rename to oop/inheritance/methodOverRiding/DynamicMethodDispatch/DynamicMethodDispatch.java diff --git a/oop/inheritance/methodOverRiding/DynamicMethodDispatch/index.html b/oop/inheritance/methodOverRiding/DynamicMethodDispatch/index.html new file mode 100644 index 00000000..85e0f670 --- /dev/null +++ b/oop/inheritance/methodOverRiding/DynamicMethodDispatch/index.html @@ -0,0 +1,1396 @@ + + + + + + + + + + + + + + + + + + Dynamic Method Dispatch - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Dynamic Method Dispatch

    +

    How Java implements run-time polymorphism ?

    +

    Dynamic Method Dispatch Image

    +
      +
    • Overiding method allow Java to support run-time polymorphism.
      • +
    • Dynamic method dispatch is the mechanism by which a call to an overridden method is resolved at run time, rather than compile time.
      • +
    • The type of the ovject being referred to that determine which version of an overridden method will be executed.
      • +
    + + +
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    + Copyright © 2020 Arjun Adhikari +
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    + +
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    Method Overriding

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    • In a class hierarchy, when a method in a subclass has the same name and the type signature as a method in its superclass, then the method in the subclass is said to override the method in the superclass.
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    • When an overridden method is called from within its subclass, it will always reger to the version of that method defined by the subclass.
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    • The version of the method defined by the superclass will be hidden.
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    • If we need to invoke version of superclass, we must use super inside the subclass.
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    + Copyright © 2020 Arjun Adhikari +
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    Super

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    Using super() :

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    • Whenever a sub class needs to refer to its immediate superclass, it can do so by use of the keyword super.
      • +
    • +

      super() has two general forms :

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      1. The first calls the super class constructor.
        2. +
      2. It is used to access a member of the super class that has been hidden by member of a subclass.
        3. +
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      super() must always be the first statement executed inside a subclass constructor.

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    When constructor are executed in inheritance?
    +- Order of Derivation

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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/oop/usingPackage/PackageDemo.java b/oop/usingPackage/PackageDemo.java similarity index 100% rename from notes/oop/usingPackage/PackageDemo.java rename to oop/usingPackage/PackageDemo.java diff --git a/notes/oop/usingPackage/gces/Student.java b/oop/usingPackage/gces/Student.java similarity index 100% rename from notes/oop/usingPackage/gces/Student.java rename to oop/usingPackage/gces/Student.java diff --git a/oop/usingPackage/index.html b/oop/usingPackage/index.html new file mode 100644 index 00000000..c476c318 --- /dev/null +++ b/oop/usingPackage/index.html @@ -0,0 +1,1521 @@ + + + + + + + + + + + + + + + + + + Packages - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    Packages

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    • They are containers for classes.
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    • Package allows you to create a class named ABC, which you can store in your own package without concern that it will collide with some other class named ABC stored elsewhere.
      • +
    • Java provides a mechanism for partitioning the class name space more manageable chunks. This mechanism is referred as package.
      • +
    • Package is both a naming and a visibility ⏩ "default" control mechanism.
      • +
    +

    Defining a Package

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    To create: +- include a package command as the first statement in a Java source file. +- Any classes declared within that file will belong to the specified package. +- If you omit the package statement, the class names are put into the default package, which has no name.

    +

    In C and C++, header file

    +
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    Syntax :

    +
        package package_name;
+
    +
      +
    • Java uses file system directories to store packages.
      • +
    • For example, the .class files for any classes you declare to be part of myPackage must be stored in directory called MyPackage.
      • +
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    Directory name must match the package name exactly.

    +
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      +
    • Can create a hierarchy of package
      package com.nepal.java
+com \ nepal \ java
+
      +
      • +
    +

    Finding Packages and CLASSPATH

    +
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    How does the Java runtime system know where to look for package that you create ?

    +
    +
      +
    • First, by default, the Java runtime system uses the current working directory as its starting point. Thus, if your package is in a sub directory of the current directory, it will be found.
      • +
    • Second, you can specify a directory path or paths by setting CLASSPATH environment variable.
      • +
    • Third, can use - CLASSPATH option with Java and javac to specify the path to your classes.
      • +
    +

    Importing Packages

    +
    +

    Case I

    +
    +
        // We can only use Date class in program.
+
+    import java.util.Date;
+    class MyDate extends Date{
+
+    }
+
    +
    +

    Case II

    +
    +
        // We can use every classes of util packages in program.
+
+    import java.util.*;
+    class MyDate extends Date{
+
+    }
+
    +
    +

    Case III

    +
    +
        // We can use any class we want; FQPM = Fully Qualified Package Name
+
+    class MyDate extends java.util.Date{
+
+    }
+
    +

    +

    Types of packages

    +
      +
    1. User defined packages
      2. +
    2. Defined by the developers as poer their applicaion requirements.
      3. +
    +

    + Package abc; + Package bac; + Package cba; + class Test{

    +
        }
+
    +

    +
      +
    1. +

      Pre Defined Packages

      +
      2. +
    2. +

      are defined by java programming language and provide along with java software.

      +
      3. +
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    i. exampleOne : java.lang +- This is default packagem no need to import in JAVA. It is able to include all basic classes and interfaces which are required to prepare basic program system, object, String Buffer, String Builder Thread, Runnable, All Wrapper Classes (Byte, Short), Exception and its sub class come under java.lang.

    +

    ii. exampleTwo : java.io +- To perform input and output operation. +- InputStream, ByteArrayInputStream, FileInputStream, OutputStream, Reader, Writer etc.

    +

    iii. exampleThree : java.util +- Representing all data structures. +- List, Array List, Vector, Stack, LinkedList, Set, HasSet, Queue, SortedSet, Map, HashMap etc.

    +

    iv. exampleFour : java.awt +- To prepare GUI application +- Frame, Button, Label, List, TextField, TextArea etc.

    +

    v. exampleFive : javax.swing +- To prepare GUI application +- To overcome drawbacks of awt

    +

    vi. exampleSix : java.net +- To prepare distributed application on the basis of Socket Programming +- Socket, URL, URLConnection

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    vii. exampleSeven : java.sql +- To prepare JDBC applications +- Driver, Connection, Statement

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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/oop/usingPackage/tuts/index.html b/oop/usingPackage/tuts/index.html new file mode 100644 index 00000000..5f50f8c1 --- /dev/null +++ b/oop/usingPackage/tuts/index.html @@ -0,0 +1,1407 @@ + + + + + + + + + + + + + + + + + + How to set CLASSPATH ? - Java Notes + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + +
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    How to set CLASSPATH ?

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    +

    For Windows:

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    +

    Follow the picture below :

    +

    WindowsTuts

    +
    +

    For MacOS/Linux :

    +
    +

    export CLASSPATH = /home/arjun/Desktop/workspace/Java/oop/packages

    +

    Checking the CLASSPATH variable

    +
    +

    For Windows:

    +
    +

    echo %CLASSPATH%

    +
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    For LINUX / MacOS:

    +
    +

    echo $CLASSPATH

    + + +
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    + Copyright © 2020 Arjun Adhikari +
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    + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/notes/operators/assignmentOperators.java b/operators/assignmentOperators.java similarity index 100% rename from notes/operators/assignmentOperators.java rename to operators/assignmentOperators.java diff --git a/notes/operators/basicArithmeticOperators.java b/operators/basicArithmeticOperators.java similarity index 100% rename from notes/operators/basicArithmeticOperators.java rename to operators/basicArithmeticOperators.java diff --git a/notes/operators/bitwiseOperators.java b/operators/bitwiseOperators.java similarity index 100% rename from notes/operators/bitwiseOperators.java rename to operators/bitwiseOperators.java diff --git a/notes/operators/decimalToBinary.java b/operators/decimalToBinary.java similarity index 100% rename from notes/operators/decimalToBinary.java rename to operators/decimalToBinary.java diff --git a/notes/operators/incrementDecrement.java b/operators/incrementDecrement.java similarity index 100% rename from notes/operators/incrementDecrement.java rename to operators/incrementDecrement.java diff --git a/notes/operators/modulusOperator.java b/operators/modulusOperator.java similarity index 100% rename from notes/operators/modulusOperator.java rename to operators/modulusOperator.java diff --git a/requirements.txt b/requirements.txt deleted file mode 100644 index 59f39eeb..00000000 --- a/requirements.txt +++ /dev/null @@ -1,5 +0,0 @@ -mkdocs==1.1.2 -mkdocs-macros-plugin==0.5.5 -mkdocs-material==7.1.0 -mkdocs-material-extensions==1.0.1 -pymdown-extensions==8.1.1 diff --git a/search/search_index.json b/search/search_index.json new file mode 100644 index 00000000..cdacdb31 --- /dev/null +++ b/search/search_index.json @@ -0,0 +1 @@ +{"config":{"indexing":"full","lang":["en"],"min_search_length":3,"prebuild_index":false,"separator":"[\\s\\-]+"},"docs":[{"location":"","text":"Java Notes \u270d Arjun Adhikari , Django & Python Developer Java is a general-purpose computer-programming language that is concurrent, class-based, object-oriented, and specifically designed to have as few implementation dependencies as possible. 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The tools provided by the awt are implemented using each platforms native GUI toolkit, hence preserving the look and feel of each platform. It is an advantage of awt. But the disadvantage of such an approach is that GUI designed on one platform may look different when displayed on another platform. Awt is the foundation upon which swing is made. AWT Hierarchy Component The component is an abstract class that encapsulates all the attributes of a visual Components. Except for menus, all user interface elements that are displayed on the screen and that interact with the user of subclasses of Component. A Component object is responsible for remembering the current foreground and background colors and the currently selected text font. Container The Container class is a subclass of Component class. It has additional methods that allow other Component objects to be nested within it. Other Container objects can be stored inside a Container(Since they are themselves an instance of Component). This makes for a multilevel containment system. A Container is responsible for laying out i.e. positioning any components that it contains. It does thus throw the use of various layout manager. Panel The panel is the Container that does not contain a title bar, menu bars, border. It can have other components like button text field, etc. The panel is the superclass for the applet. This is why you don't see title bar, menu bar or border when an applet is run inside a browser. When you run an applet using an applet viewer, the applet viewer provides the title and border. Other components can be added to a Panel objects by its add() method. Once this components have been added, you can position and resize them manually using the setLocation(), setSize(), setBounds(), etc. Window The Window is the Container that has no borders and menu bars. The Window class creates a top level window. A top level window is not contained within any other object. 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GridLayout 4. CardLayout 5. GridBagLayout ### Two ways to create a Frame in AWT : 1. By extending Frame Class. (Inheritance) 2. By creating the object of Frame class. (Association)","title":"LayoutManager"},{"location":"AWT/layout/GridBagLayout/","text":"GridBag Layout A flexible layout manager that arranges components in a grid with a variable sized cells. The GridBagLayout class is flexible Layout manager that aligns components vertically and horizontally and the components of different size. Each GridBagLayout object maintains a dynamic, rectangular grid of cells. Each Component is managed by a GridBagLayout is associated with an instance of GridBagConstraints . We use to set constraints : void setConstraints(Component c, GridBagConstraints cons); Constructor 1. GridBagLayout();","title":"GridBag Layout"},{"location":"AWT/layout/GridBagLayout/#gridbag-layout","text":"A flexible layout manager that arranges components in a grid with a variable sized cells. The GridBagLayout class is flexible Layout manager that aligns components vertically and horizontally and the components of different size. Each GridBagLayout object maintains a dynamic, rectangular grid of cells. Each Component is managed by a GridBagLayout is associated with an instance of GridBagConstraints . We use to set constraints : void setConstraints(Component c, GridBagConstraints cons);","title":"GridBag Layout"},{"location":"AWT/layout/GridBagLayout/#constructor","text":"1. GridBagLayout();","title":"Constructor"},{"location":"AWT/layout/GridLayout/","text":"Grid Layout A container using the GridLayout scheme arranges components in rows and colums in row major order. Each component is sized to fit its respective grid cell. Constructors a. GridLayout() b. GridLayout(int rows, int cols) c. GridLayout(int rows, int cols, int hgap, int vgap)","title":"Grid Layout"},{"location":"AWT/layout/GridLayout/#grid-layout","text":"A container using the GridLayout scheme arranges components in rows and colums in row major order. Each component is sized to fit its respective grid cell.","title":"Grid Layout"},{"location":"AWT/layout/GridLayout/#constructors","text":"a. GridLayout() b. GridLayout(int rows, int cols) c. GridLayout(int rows, int cols, int hgap, int vgap)","title":"Constructors"},{"location":"AWT/layout/borderLayout/","text":"Border Layout The BorderLayout manager arranges components within specified regions of container. Valid regions are : \"North\", \"South\", \"East\", \"West\" & \"Center\". Constructor BorderLayout() BorderLayout(int hgap, int vgap) Eg: add(new Button(\"North\"), BorderLayout.WEST) add(\"North\", new Button(\"West\") )","title":"Border Layout"},{"location":"AWT/layout/borderLayout/#border-layout","text":"The BorderLayout manager arranges components within specified regions of container. Valid regions are : \"North\", \"South\", \"East\", \"West\" & \"Center\".","title":"Border Layout"},{"location":"AWT/layout/borderLayout/#constructor","text":"BorderLayout() BorderLayout(int hgap, int vgap) Eg: add(new Button(\"North\"), BorderLayout.WEST) add(\"North\", new Button(\"West\") )","title":"Constructor"},{"location":"AWT/layout/cardLayout/","text":"Card Layout Makes each component as large as the container and diplays only one at a time. Constructors CardLayout () CardLayout (int hgap, int vgap) Methods void first (Container deck) void last (Container deck) void next (Container deck) void previous (Container deck) void show (Container deck, String cardName)","title":"Card Layout"},{"location":"AWT/layout/cardLayout/#card-layout","text":"Makes each component as large as the container and diplays only one at a time.","title":"Card Layout"},{"location":"AWT/layout/cardLayout/#constructors","text":"CardLayout () CardLayout (int hgap, int vgap)","title":"Constructors"},{"location":"AWT/layout/cardLayout/#methods","text":"void first (Container deck) void last (Container deck) void next (Container deck) void previous (Container deck) void show (Container deck, String cardName)","title":"Methods"},{"location":"AWT/layout/flowLayout/","text":"FlowLayout Arranges components like words on a page - From left to right in rows and then top to bottom as each row fills up. ## Constructors 1. FlowLayout() 2. FlowLayout(int align) 3. FlowLayout(int align, int hgape, int vgape) ## FlowLayout Alignments FlowLayout.LEFT, FlowLayout.RIGHT, FlowLayout.CENTER","title":"FlowLayout"},{"location":"AWT/layout/flowLayout/#flowlayout","text":"Arranges components like words on a page - From left to right in rows and then top to bottom as each row fills up. ## Constructors 1. FlowLayout() 2. FlowLayout(int align) 3. FlowLayout(int align, int hgape, int vgape) ## FlowLayout Alignments FlowLayout.LEFT, FlowLayout.RIGHT, FlowLayout.CENTER","title":"FlowLayout"},{"location":"AWT/list/","text":"List The List class provides a compact, multiple-choice scrolling selection list. ## Constructors 1. List() throws HeadlessException 2. List(int numRows) throws HeadlessException 3. List( int numRows, boolean multipleSelect) throws HeadlessException numRows number of rows will be visible, if false, then only one item may be selected. ## Methods 1. void add(String name); 2. void add(String name , int index); 3. String getSelectedItem() - for single selection 5. int getSelectedIndex() 6. String[] getSelectedItems() - for multiple selection 8. int[] getSelectedIndexes() 9. int getItemCount(); 10. void select(int index);","title":"List"},{"location":"AWT/list/#list","text":"The List class provides a compact, multiple-choice scrolling selection list. ## Constructors 1. List() throws HeadlessException 2. List(int numRows) throws HeadlessException 3. List( int numRows, boolean multipleSelect) throws HeadlessException numRows number of rows will be visible, if false, then only one item may be selected. ## Methods 1. void add(String name); 2. void add(String name , int index); 3. String getSelectedItem() - for single selection 5. int getSelectedIndex() 6. String[] getSelectedItems() - for multiple selection 8. int[] getSelectedIndexes() 9. int getItemCount(); 10. void select(int index);","title":"List"},{"location":"AWT/scrollBar/","text":"Scrollbar Scrollbar is used to select continuous values between a specified minimum and maximum. May be oriented horizontally or vertically. It contain slider box that can be dragged by the uset to a new position. # Constructors 1. Scrollbar() throws HeadlessException 2. Scrollbar(int style) throws HeadlessException - Style includes Scrollbar.VERTICAL and Scrollbar.HORIZONTAL . Scrollbar(int style, int thumbSize, int min, int max) throws HeadlessException # Methods: 1. void setValues(int initialValue, int thumbSize, int min, int max); 2. int getValue() 3. void setValue(int newValue) 4. int getMinimum() 5. int getMaximum()","title":"Scrollbar"},{"location":"AWT/scrollBar/#scrollbar","text":"Scrollbar is used to select continuous values between a specified minimum and maximum. May be oriented horizontally or vertically. It contain slider box that can be dragged by the uset to a new position. # Constructors 1. Scrollbar() throws HeadlessException 2. Scrollbar(int style) throws HeadlessException - Style includes Scrollbar.VERTICAL and Scrollbar.HORIZONTAL . Scrollbar(int style, int thumbSize, int min, int max) throws HeadlessException # Methods: 1. void setValues(int initialValue, int thumbSize, int min, int max); 2. int getValue() 3. void setValue(int newValue) 4. int getMinimum() 5. int getMaximum()","title":"Scrollbar"},{"location":"AWT/textArea/","text":"TextArea Sub class of TextComponent Sometimes a single line of text input is not enough for a given task. To handle this situation, the awt includes a simple multiline editor called TextArea . ## Constructors 1. TextArea() throws HeadlessException 2. TextArea(int numLines, int numChars) throws HeadlessException 3. TextArea(String str) throws HeadlessException 4. TextArea(Stirng str, int numLines, numChars) throws HeadlessException 5. TextArea(String str, int numLines,int numChars, int sBars) throws HeadlessException Here, numLines represents rows and numChars represents number of columns. sBars is Scroll Bar to use scrollbar in the TextArea. SCROLLBARS_BOTH, SCROLLBARS_NONE, SCROLLBARS_HORIZONTAL_ONLY, SCROLLBARS_VERTICAL_ONLY Public Methods: 1. String getText() 2. void setText() 3. String getSelectedText() 4. void select(int startIndex, int endIndex) 5. boolean isEditable() 6. void setEditable( boolean canEdit) These methods are defined by TextComponent TextComponent class is the superclass of TextField and TextArea So, both TextField and TextArea can use these methods. TextArea adds the following editing methods: 1. void append(String str) - The append() method appends the strings specified by str to the end of the current text. void insert(String str , int index) insert() method inserts the string passed in str at the specified index. void replaceRange(String sr, int startIndex , int endIndex) To replace text, replaceRange() replaces the characters from startIndex to endIndex-1, with the replacement text passed in str.","title":"TextArea"},{"location":"AWT/textArea/#textarea","text":"Sub class of TextComponent Sometimes a single line of text input is not enough for a given task. To handle this situation, the awt includes a simple multiline editor called TextArea . ## Constructors 1. TextArea() throws HeadlessException 2. TextArea(int numLines, int numChars) throws HeadlessException 3. TextArea(String str) throws HeadlessException 4. TextArea(Stirng str, int numLines, numChars) throws HeadlessException 5. TextArea(String str, int numLines,int numChars, int sBars) throws HeadlessException Here, numLines represents rows and numChars represents number of columns. sBars is Scroll Bar to use scrollbar in the TextArea. SCROLLBARS_BOTH, SCROLLBARS_NONE, SCROLLBARS_HORIZONTAL_ONLY, SCROLLBARS_VERTICAL_ONLY Public Methods: 1. String getText() 2. void setText() 3. String getSelectedText() 4. void select(int startIndex, int endIndex) 5. boolean isEditable() 6. void setEditable( boolean canEdit) These methods are defined by TextComponent TextComponent class is the superclass of TextField and TextArea So, both TextField and TextArea can use these methods. TextArea adds the following editing methods: 1. void append(String str) - The append() method appends the strings specified by str to the end of the current text. void insert(String str , int index) insert() method inserts the string passed in str at the specified index. void replaceRange(String sr, int startIndex , int endIndex) To replace text, replaceRange() replaces the characters from startIndex to endIndex-1, with the replacement text passed in str.","title":"TextArea"},{"location":"AWT/textField/","text":"TextField The TextField class implements a single line text entry area ususally called an edit control. TextField allow the user to enter strings and to edit the text using the arrow keys, cut and paste keys and mouse selection. ## Constructors 1. public TextField(String initialText, int columns) - Construct a TextField instance with the given initial text string with the number of column public TextField(String strText); Set the text display text on this TextField instance public TextField(int columns); Construct s TextField instance with number of columns ## Public Methods 1. boolean isEditable() public String getText(); Get the current text on this TextField instance public void setText(String strText) Set this display text on this TextField instance public void setEditable(boolean editable); Set the TextField to editable (read/ write) or non editable (read- only) void setEchoChar(char ch) Change the content of generally password into OR there may be times when you will want the user to enter text that is not displayed, such as a password. You can disable the echoing of the characters as they are typed by calling this method. If ch is 0, then normal echoing is restored. TextField password = new TextField(); password.setEchoChar(\"*\") boolean echoCharIsSet(); Return ture or false whether the TextField is set with some char char getEchoChar(); Return the character which was set in the TextField.","title":"TextField"},{"location":"AWT/textField/#textfield","text":"The TextField class implements a single line text entry area ususally called an edit control. TextField allow the user to enter strings and to edit the text using the arrow keys, cut and paste keys and mouse selection. ## Constructors 1. public TextField(String initialText, int columns) - Construct a TextField instance with the given initial text string with the number of column public TextField(String strText); Set the text display text on this TextField instance public TextField(int columns); Construct s TextField instance with number of columns ## Public Methods 1. boolean isEditable() public String getText(); Get the current text on this TextField instance public void setText(String strText) Set this display text on this TextField instance public void setEditable(boolean editable); Set the TextField to editable (read/ write) or non editable (read- only) void setEchoChar(char ch) Change the content of generally password into OR there may be times when you will want the user to enter text that is not displayed, such as a password. You can disable the echoing of the characters as they are typed by calling this method. If ch is 0, then normal echoing is restored. TextField password = new TextField(); password.setEchoChar(\"*\") boolean echoCharIsSet(); Return ture or false whether the TextField is set with some char char getEchoChar(); Return the character which was set in the TextField.","title":"TextField"},{"location":"JDBC/","text":"Java Database Connetivity (JDBC) JDBC is a speification (Guidelines) defined by Java vendor and implemented by Database vendor. Database vendor provided implementation is called Driver Software.","title":"Java Database Connetivity (JDBC)"},{"location":"JDBC/#java-database-connetivity-jdbc","text":"JDBC is a speification (Guidelines) defined by Java vendor and implemented by Database vendor. Database vendor provided implementation is called Driver Software.","title":"Java Database Connetivity (JDBC)"},{"location":"JDBC/DIFFERENCES/","text":"Difference between ODBC and JDBC ODBC 1992, Open Database Connectivity Developed by Microsoft Support any language Only for Windows machine Support any database JDBC 1997, Java Database Connectivity - Support any database - Support any platform - Only for Java language - Developed by Sun Microsystems.","title":"Difference between ODBC and JDBC"},{"location":"JDBC/DIFFERENCES/#difference-between-odbc-and-jdbc","text":"","title":"Difference between ODBC and JDBC"},{"location":"JDBC/DIFFERENCES/#odbc","text":"1992, Open Database Connectivity Developed by Microsoft Support any language Only for Windows machine Support any database","title":"ODBC"},{"location":"JDBC/DIFFERENCES/#jdbc","text":"1997, Java Database Connectivity - Support any database - Support any platform - Only for Java language - Developed by Sun Microsystems.","title":"JDBC"},{"location":"JDBC/DifferencesBetweenStatementAndPS/","text":"Difference between Statement and Prepared Statement Statement Prepared Statement At the time of creating Statement object, we are not required to provide any query At the time of creating Prepared Object, we have to provide SQL Query compulsary which can be send to the database and will be compiled. Statemnt st = con.createStatement(); PreparedStatement pst = con.prepareStatement(query); Hence, Statement object is not associated with any query and we can use for multiple queries. Hence, Prepared Statement is associated with any query. Whenever, we are using execute method, everytime query will be compiled. Whenever, we are using execute method, query won't be compiled every time. Statement object can work only for static queries. Work for Static and Dynamic Queries Relatively, performance is low. Relatively, performance is high. Chance of SQL Injection No Chance of SQL Injection Inserting data value and large object is difficult. Insering data value and large object is easy.","title":"Difference between Statement and Prepared Statement"},{"location":"JDBC/DifferencesBetweenStatementAndPS/#difference-between-statement-and-prepared-statement","text":"Statement Prepared Statement At the time of creating Statement object, we are not required to provide any query At the time of creating Prepared Object, we have to provide SQL Query compulsary which can be send to the database and will be compiled. Statemnt st = con.createStatement(); PreparedStatement pst = con.prepareStatement(query); Hence, Statement object is not associated with any query and we can use for multiple queries. Hence, Prepared Statement is associated with any query. Whenever, we are using execute method, everytime query will be compiled. Whenever, we are using execute method, query won't be compiled every time. Statement object can work only for static queries. Work for Static and Dynamic Queries Relatively, performance is low. Relatively, performance is high. Chance of SQL Injection No Chance of SQL Injection Inserting data value and large object is difficult. Insering data value and large object is easy.","title":"Difference between Statement and Prepared Statement"},{"location":"JDBC/FEATURES/","text":"JDBC Features Standard API (Same for all DBMS) Database Management API Most of the JDBC driver are developed using Java, so they are platform independent. Huge vendor support for JDBC . Perform basic CRUD (Create, Read, Update & Delete) operation very easily.","title":"JDBC Features"},{"location":"JDBC/FEATURES/#jdbc-features","text":"Standard API (Same for all DBMS) Database Management API Most of the JDBC driver are developed using Java, so they are platform independent. Huge vendor support for JDBC . Perform basic CRUD (Create, Read, Update & Delete) operation very easily.","title":"JDBC Features"},{"location":"JDBC/JDBCDriver/","text":"JDBC Driver While communicating with database, we have to connect java calls into database specific calls and database specific calls into java cells. For this Driver software is required. As per our analogy, driver software is a translator. Progress Direct Software Company introduced Type-5 driver but is not industry standard driver. Types of JDBC Driver Type 1 Driver (JDBC-ODBC Bridge Driver) Type 2 Driver (Native API-Partly Driver or Native Driver) Type 3 Driver (All Java Net Protocol Driver or Network Protocol Driver or Middleware Driver) Type 4 Driver (Pure Java Driver or Native Protocol or Thin Driver) Type 1 Driver ODBC Supports all programming languages. Type 2 Driver Written in C, C++ Type 3 Driver Three tiers Type 4 Driver Thick vs Thin Driver See in copy. Comparision Property Type 1 Type 2 Type 3 Type 4 Conversion From JDBC Calls to ODBC Call From JDBC Calls to Native Library Call From JDBC Calls to Middleware Server Call From JDBC Calls to Database specific Call Implemented In Only Java Java and Native Langiages like C, C++ Only Java Only Java Architecture 2 Tier 2 Tier 3 Tier 2 Tier Platform Independent No No Yes Yes Database Independent Yes No Yes No Thick or Thin Thick Thick Thick Thin Also Known As JDBC-ODBC Bridge Driver Native API-Partly Driver or Native Driver All Java Net Protocol Driver or Network Protocol Driver or Middleware Driver Pure Java Driver or Native Protocol or Thin Driver","title":"JDBC Driver"},{"location":"JDBC/JDBCDriver/#jdbc-driver","text":"While communicating with database, we have to connect java calls into database specific calls and database specific calls into java cells. For this Driver software is required. As per our analogy, driver software is a translator. Progress Direct Software Company introduced Type-5 driver but is not industry standard driver.","title":"JDBC Driver"},{"location":"JDBC/JDBCDriver/#types-of-jdbc-driver","text":"Type 1 Driver (JDBC-ODBC Bridge Driver) Type 2 Driver (Native API-Partly Driver or Native Driver) Type 3 Driver (All Java Net Protocol Driver or Network Protocol Driver or Middleware Driver) Type 4 Driver (Pure Java Driver or Native Protocol or Thin Driver)","title":"Types of JDBC Driver"},{"location":"JDBC/JDBCDriver/#type-1-driver","text":"ODBC Supports all programming languages.","title":"Type 1 Driver"},{"location":"JDBC/JDBCDriver/#type-2-driver","text":"Written in C, C++","title":"Type 2 Driver"},{"location":"JDBC/JDBCDriver/#type-3-driver","text":"Three tiers","title":"Type 3 Driver"},{"location":"JDBC/JDBCDriver/#type-4-driver","text":"","title":"Type 4 Driver"},{"location":"JDBC/JDBCDriver/#thick-vs-thin-driver","text":"See in copy.","title":"Thick vs Thin Driver"},{"location":"JDBC/JDBCDriver/#comparision","text":"Property Type 1 Type 2 Type 3 Type 4 Conversion From JDBC Calls to ODBC Call From JDBC Calls to Native Library Call From JDBC Calls to Middleware Server Call From JDBC Calls to Database specific Call Implemented In Only Java Java and Native Langiages like C, C++ Only Java Only Java Architecture 2 Tier 2 Tier 3 Tier 2 Tier Platform Independent No No Yes Yes Database Independent Yes No Yes No Thick or Thin Thick Thick Thick Thin Also Known As JDBC-ODBC Bridge Driver Native API-Partly Driver or Native Driver All Java Net Protocol Driver or Network Protocol Driver or Middleware Driver Pure Java Driver or Native Protocol or Thin Driver","title":"Comparision"},{"location":"JDBC/SQLInjection/","text":"SQL Injection SQL Injection is a code injection technique that might destory your database. SQL Injection usually occurs when you ask a user for input, like their username and instead of username, the user gives you an SQL statement that you will unknowingly run on your database. SQL Injection can be prevented by using prepared statement.","title":"SQL Injection"},{"location":"JDBC/SQLInjection/#sql-injection","text":"SQL Injection is a code injection technique that might destory your database. SQL Injection usually occurs when you ask a user for input, like their username and instead of username, the user gives you an SQL statement that you will unknowingly run on your database. SQL Injection can be prevented by using prepared statement.","title":"SQL Injection"},{"location":"JDBC/StepsToDevelopJDBCApplication/","text":"Steps to Develop JDBC Application Load and Register driver class. Class.forName(\"Oracle.jdbc.OracleDriver\"); Establish Conection Connection con = Driver.Manager.getConnection( url , DbUsername , DbPassword ) ; Creation of statement Object Statement st = con.createStatement(); Send and Execute SQL Query Result rs = st.executeQuery(\"Select * from employees\"); Process Result from ResultSet while(rs.next()) { System.out.Println(rs.getInt(1)); } Close connection con.close();","title":"Steps to Develop JDBC Application"},{"location":"JDBC/StepsToDevelopJDBCApplication/#steps-to-develop-jdbc-application","text":"Load and Register driver class. Class.forName(\"Oracle.jdbc.OracleDriver\"); Establish Conection Connection con = Driver.Manager.getConnection( url , DbUsername , DbPassword ) ; Creation of statement Object Statement st = con.createStatement(); Send and Execute SQL Query Result rs = st.executeQuery(\"Select * from employees\"); Process Result from ResultSet while(rs.next()) { System.out.Println(rs.getInt(1)); } Close connection con.close();","title":"Steps to Develop JDBC Application"},{"location":"JDBC/TypesOfSQLCommands/","text":"Types of SQL Commands DDL (Data Definition Language) CREATE TABLE, ALTER, DROP DQL (Data Query Language) SELECT DCL (Data Control Language) ALTER, PASSWORD, GRANT ACCESS DML (Data Manipulation Language) INSERT, DELETE, UPDATE (Data Administration) START AUDIT (Data Transaction) COMMIT, ROLLBACK, SAVEPOINT What should I know as Java Developer ? Select Queries( DQL ) Returns Result Set Non-Select Queries( DML ) Returns Numeric Value Methods to Execute SQL Query executeQuery() To execute SELECT queries. public result executeQuery(String sqlQuery) throws SQLException Eg: Result rs = st.executeQuery(\"SELECT * FROM employess\"); while(rs.next()){ System.out.println(\" ID : \" rs.getInt(1)); } executeUpdate() Applicable for non-select operation(DML) public int executeUpdate(String sqlQuery) throws SQLException Eg: int affectedRow = st.executeUpdate(\"INSERT INTO employees(`id`) VALUES ('1')\"); Returns the afftected rows. execute() For both SELECT and NON- SELECT operations. If you don't know SQL query until run-time, we can use execute(). Return type => boolean -> True - SELECT Query -> false - Non- SELECT Query public boolean execute (String query) throws SQLException Eg: boolean b = st.execute(Dynamically provide SQLQuery); if(b == true) { ResultSet rs = st.getResultSet(); } else { int rowCount = st.getUpdateCount(); }","title":"Types of SQL Commands"},{"location":"JDBC/TypesOfSQLCommands/#types-of-sql-commands","text":"DDL (Data Definition Language) CREATE TABLE, ALTER, DROP DQL (Data Query Language) SELECT DCL (Data Control Language) ALTER, PASSWORD, GRANT ACCESS DML (Data Manipulation Language) INSERT, DELETE, UPDATE (Data Administration) START AUDIT (Data Transaction) COMMIT, ROLLBACK, SAVEPOINT","title":"Types of SQL Commands"},{"location":"JDBC/TypesOfSQLCommands/#what-should-i-know-as-java-developer","text":"","title":"What should I know as Java Developer ?"},{"location":"JDBC/TypesOfSQLCommands/#select-queriesdql","text":"Returns Result Set","title":"Select Queries(DQL)"},{"location":"JDBC/TypesOfSQLCommands/#non-select-queriesdml","text":"Returns Numeric Value","title":"Non-Select Queries(DML)"},{"location":"JDBC/TypesOfSQLCommands/#methods-to-execute-sql-query","text":"executeQuery() To execute SELECT queries. public result executeQuery(String sqlQuery) throws SQLException Eg: Result rs = st.executeQuery(\"SELECT * FROM employess\"); while(rs.next()){ System.out.println(\" ID : \" rs.getInt(1)); } executeUpdate() Applicable for non-select operation(DML) public int executeUpdate(String sqlQuery) throws SQLException Eg: int affectedRow = st.executeUpdate(\"INSERT INTO employees(`id`) VALUES ('1')\"); Returns the afftected rows. execute() For both SELECT and NON- SELECT operations. If you don't know SQL query until run-time, we can use execute(). Return type => boolean -> True - SELECT Query -> false - Non- SELECT Query public boolean execute (String query) throws SQLException Eg: boolean b = st.execute(Dynamically provide SQLQuery); if(b == true) { ResultSet rs = st.getResultSet(); } else { int rowCount = st.getUpdateCount(); }","title":"Methods to Execute SQL Query"},{"location":"applet/","text":"Applet Programming An applet is a Java program that runs in a web browser. An applet is a Java class that extends the java.applet.Applet . No main() method Applet was designed to be embedded with a HTML page. JVM is required to view an applet. Applet have strict security rules that are enforced by the web browser. Two types of Applet Based on Applet class These Applets use the Abstract Window Toolkit ( AWT ) to provide the graphical user interface (GUI). The style of applet has been available since Java was first created. Based on JApplet class They are based on the Swing class JApplet which inherits Applet. Swing applet use the swing classes to provide the GUI. Life Cycle of Applet Applet Initialization and Termination When an applet begins ,the following methods are called in this sequence : init() start() paint() Whenever an applet is terminated, the following sequence of methods calls takes place. stop() destroy() Description : init() The init( ) method is the first method to be called. This is where you should initialize variables. This method is called only once during the run time of your applet. start() The start( ) method is called after init( ) . It is also called to restart an applet after it has been stopped. Whereas init( ) is called once\u2014the first time an applet is loaded\u2014 start( ) is called each time an applet\u2019s HTML document is displayed onscreen. So, if a user leaves a web page and comes back, the applet resumes execution at start( ) . paint() The paint( ) method is called each time an AWT-based applet\u2019s output must be redrawn. This situation can occur for several reasons. Whatever the applet must redraw its output, paint( ) method is called. The paint( ) method has one parameter of type Graphics. stop() The stop( ) method is called when a web browser leaves the HTML document containing the applet\u2014when it goes to another page, for example. When stop( ) is called, the applet is probably running. You should use stop( ) to suspend threads that don\u2019t need to run when the applet is not visible. You can restart them when start( ) is called if the user returns to the page. destroy() The destroy( ) method is called when the environment determines that your applet needs to be removed completely from memory. At this point, you should free up any resources the applet may be using. The stop( ) method is always called before destroy( ) . The HTML APPLET Tag Syntax : [< PARAM NAME = attributeName VALUE = AttributeValue>] >> Important for Exam \ud83d\udcaf [HTML Displayed in the absence of Java] Note : [ ] \u23e9 Optional CODEBASE It is an optional attribute that specifies the base URL of the applet code, which is the directory that will be searched for the applets executable class file. The HTML Document URL Directory is used as the CODEBASE if this attribute is not specified. CODE Code is the required attribute that gives the name of file containing compiled .class file. This file is related to the code base URL of the applet. ALT The ALT tag is an alternate tag used to specify a short text message that should be displayed if the browser recognized the applet tag but can't currently run JAVA applet. NAME NAME is an optional attribute used to specify a name for the applet instance. NAME attribute is used in order to communicate between applets on the same page. WIDTH and HEIGHT WIDTH and HEIGHT are the required attributes that gives the size of the applet display area. ALIGN ALIGN is an optional attribute that specifies the alignment of the applet. The possible values are LEFT, RIGHT, TOP, BOTTOM, MIDDLE, BASELINE, TEXTTOP, ABSMIDDLE (Absolute Middle) and ABSBOTTOM (Absolute Bottom). VSPACE and HSPACE These attributes are optional. VSPACE specifies the space in pixel and below the applet. HSPACE specifies the space in pixel on each sides of the applet. PARAM NAME and VALUE PARAMNAME is a tag used to specify applet specific arguments. Applets access their attributes with the getParameter( ) Life Cycle of Applet import java.applet.* ; import java.awt.* ; /* */ public class LifeCycle extends Applet { String message = \"\" ; public void init ( Graphics graphicsObject ){ message += \"Inside Init() \" ; graphicsObject . drawString ( message , 100 , 120 ); } public void start () { message += \"Inside Start() \" ; } public void paint ( Graphics graphicsObject ) { message += \"Inside Paint() \" ; graphicsObject . drawString ( message , 100 , 120 ); } public void stop () { message += \"Inside Stop() \" ; } public void destroy () { message += \"Inside Destroy() \" ; } }","title":"Introduction"},{"location":"applet/#applet-programming","text":"An applet is a Java program that runs in a web browser. An applet is a Java class that extends the java.applet.Applet . No main() method Applet was designed to be embedded with a HTML page. JVM is required to view an applet. Applet have strict security rules that are enforced by the web browser.","title":"Applet Programming"},{"location":"applet/#two-types-of-applet","text":"Based on Applet class These Applets use the Abstract Window Toolkit ( AWT ) to provide the graphical user interface (GUI). The style of applet has been available since Java was first created. Based on JApplet class They are based on the Swing class JApplet which inherits Applet. Swing applet use the swing classes to provide the GUI.","title":"Two types of Applet"},{"location":"applet/#life-cycle-of-applet","text":"","title":"Life Cycle of Applet"},{"location":"applet/#applet-initialization-and-termination","text":"When an applet begins ,the following methods are called in this sequence : init() start() paint() Whenever an applet is terminated, the following sequence of methods calls takes place. stop() destroy()","title":"Applet Initialization and Termination"},{"location":"applet/#description","text":"init() The init( ) method is the first method to be called. This is where you should initialize variables. This method is called only once during the run time of your applet. start() The start( ) method is called after init( ) . It is also called to restart an applet after it has been stopped. Whereas init( ) is called once\u2014the first time an applet is loaded\u2014 start( ) is called each time an applet\u2019s HTML document is displayed onscreen. So, if a user leaves a web page and comes back, the applet resumes execution at start( ) . paint() The paint( ) method is called each time an AWT-based applet\u2019s output must be redrawn. This situation can occur for several reasons. Whatever the applet must redraw its output, paint( ) method is called. The paint( ) method has one parameter of type Graphics. stop() The stop( ) method is called when a web browser leaves the HTML document containing the applet\u2014when it goes to another page, for example. When stop( ) is called, the applet is probably running. You should use stop( ) to suspend threads that don\u2019t need to run when the applet is not visible. You can restart them when start( ) is called if the user returns to the page. destroy() The destroy( ) method is called when the environment determines that your applet needs to be removed completely from memory. At this point, you should free up any resources the applet may be using. The stop( ) method is always called before destroy( ) .","title":"Description :"},{"location":"applet/#the-html-applet-tag","text":"Syntax : [< PARAM NAME = attributeName VALUE = AttributeValue>] >> Important for Exam \ud83d\udcaf [HTML Displayed in the absence of Java] Note : [ ] \u23e9 Optional","title":"The HTML APPLET Tag"},{"location":"applet/#codebase","text":"It is an optional attribute that specifies the base URL of the applet code, which is the directory that will be searched for the applets executable class file. The HTML Document URL Directory is used as the CODEBASE if this attribute is not specified.","title":"CODEBASE"},{"location":"applet/#code","text":"Code is the required attribute that gives the name of file containing compiled .class file. This file is related to the code base URL of the applet.","title":"CODE"},{"location":"applet/#alt","text":"The ALT tag is an alternate tag used to specify a short text message that should be displayed if the browser recognized the applet tag but can't currently run JAVA applet.","title":"ALT"},{"location":"applet/#name","text":"NAME is an optional attribute used to specify a name for the applet instance. NAME attribute is used in order to communicate between applets on the same page.","title":"NAME"},{"location":"applet/#width-and-height","text":"WIDTH and HEIGHT are the required attributes that gives the size of the applet display area.","title":"WIDTH and HEIGHT"},{"location":"applet/#align","text":"ALIGN is an optional attribute that specifies the alignment of the applet. The possible values are LEFT, RIGHT, TOP, BOTTOM, MIDDLE, BASELINE, TEXTTOP, ABSMIDDLE (Absolute Middle) and ABSBOTTOM (Absolute Bottom).","title":"ALIGN"},{"location":"applet/#vspace-and-hspace","text":"These attributes are optional. VSPACE specifies the space in pixel and below the applet. HSPACE specifies the space in pixel on each sides of the applet.","title":"VSPACE and HSPACE"},{"location":"applet/#param-name-and-value","text":"PARAMNAME is a tag used to specify applet specific arguments. Applets access their attributes with the getParameter( )","title":"PARAM NAME and VALUE"},{"location":"applet/#life-cycle-of-applet_1","text":"import java.applet.* ; import java.awt.* ; /* */ public class LifeCycle extends Applet { String message = \"\" ; public void init ( Graphics graphicsObject ){ message += \"Inside Init() \" ; graphicsObject . drawString ( message , 100 , 120 ); } public void start () { message += \"Inside Start() \" ; } public void paint ( Graphics graphicsObject ) { message += \"Inside Paint() \" ; graphicsObject . drawString ( message , 100 , 120 ); } public void stop () { message += \"Inside Stop() \" ; } public void destroy () { message += \"Inside Destroy() \" ; } }","title":"Life Cycle of Applet"},{"location":"applet/EXAMPLES/","text":"Passing Parameter Demonstrate the passing of parameters in Applet File. HTML File < html > < head > < title > Passing Parameter to Applet < body > < applet code = \"ParamDemo.java\" height = \"300\" width = \"300\" > < param name = \"fontName\" value = \"Comic Sans MS\" > < param name = \"fontSize\" value = \"40\" > < param name = \"leadingfontName\" value = \"14.80\" > < param name = \"active\" value = \"true\" > Java File import java.applet.* ; import java.awt.* ; // Following HTML chunk will pass parameter to Applet. This is comment for Java Compiler but not for appletviewer, so altering the attribute of parameter never compell to recompile again. /*/ */ public class ParamDemo extends Applet { String fontName ; String param ; int fontSize ; float leading ; boolean active ; public void init () { // Param is not used here because to get the String value and again to pass to String, no temp variable (param) is needed. fontName = getParameter ( \"fontName\" ); if ( fontName == null ) { fontName = \"Not Specified\" ; } // Param is used as temporary String variable which retrieves the parameter passed. param = getParameter ( \"fontSize\" ); try { if ( param != null ) { fontSize = Integer . parseInt ( param ); // Converts the number in String to Integer data type. } else { fontSize = 0 ; } } catch ( NumberFormatException exc ) { fontSize = 0 ; } param = getParameter ( \"leading\" ); try { if ( param != null ) { leading = Float . valueOf ( param ). floatValue (); // Converts the number in String to Float data type. } else { leading = 0f ; } } catch ( NumberFormatException exc ) { leading = 0f ; } param = getParameter ( \"active\" ); if ( param != null ) { active = Boolean . valueOf ( param ). booleanValue (); // Converts the boolean value in String to Boolean data type. } } public void paint ( Graphics graphicsObject ) { graphicsObject . drawString ( \"Font Name : \" + fontName , 100 , 50 ); graphicsObject . drawString ( \"Font Size : \" + fontName , 100 , 60 ); graphicsObject . drawString ( \"Leading : \" + leading , 100 , 70 ); graphicsObject . drawString ( \"Active : \" + active , 100 , 80 ); } } Display Available Fonts Display the available fonts in the system. /* This shows the available fonts in Host Computer. */ /* */ import java.awt.* ; import java.applet.* ; public class AvailableFonts extends Applet { public void paint ( Graphics g ) { String message = \"\" ; // Initialize string to empty first. String fontLists [] ; /* I don't get the below line. */ GraphicsEnvironment ge = GraphicsEnvironment . getLocalGraphicsEnvironment (); fontLists = ge . getAvailableFontFamilyNames (); for ( String fontList : fontLists ) { message += fontList + \"\\n \" ; g . drawString ( message , 10 , 20 ); } } } Custom Font and Size Demonstrating applet with custom font text and size. import java.awt.* ; import java.applet.* ; // This HTML chunk is for passing parameter to appletviewer. /* > I read in Gandaki College of Information and Science.\"> */ public class CustomFont extends Applet { String param ; String fontName ; String title ; String message ; int fontSize ; // We are defining our custom font. So, font object is created. Font myFont ; public void init () { fontName = getParameter ( \"fontName\" ); if ( fontName == null ) { fontName = \"TimesRoman\" ; } title = getParameter ( \"title\" ); if ( title == null ) { title = \"Untitled\" ; } message = getParameter ( \"message\" ); if ( message == null ) { message = \"Write your description here.\" ; } param = getParameter ( \"fontSize\" ); try { if ( param != null ) { fontSize = Integer . parseInt ( param ); } else { fontSize = 10 ; // parameter pass garyo tara integer parse vayena vane } } catch ( NumberFormatException exc ) { fontSize = 15 ; // Parameter nai pass garena vane chahi yo run huncha } } public void paint ( Graphics g ) { // Font object Syntax : Font(font_name, Font.font_type, font_size); myFont = new Font ( fontName , Font . BOLD , fontSize ); g . setFont ( myFont ); // Setting the defined font for this object. setBackground ( Color . red ); // Setting background color. setForeground ( Color . white ); // Setting foreground color. g . drawString ( title , 20 , 50 ); myFont = new Font ( fontName , Font . PLAIN , fontSize ); // Defining new font-style for displaying message. g . setFont ( myFont ); // Setting the new font. g . drawString ( message , 20 , 80 ); } } Draw Nepali Flag Draw the Nepali Flag using the Applet and graphics. import java.applet.* ; import java.awt.* ; /* */ public class Flag extends Applet { static Color NEPALIFLAG = new Color ( 221 , 12 , 39 ); // Defines custom color public void paint ( Graphics flag ) { // Figure starts from (210,10) // For upper traingle int upperTriangleX [] = { 210 , 360 , 210 }; // +150 for upper triangle int upperTriangleY [] = { 10 , 160 , 160 }; // g.drawPolygon(upperTriangleX,upperTriangleY,3); // Also can be drawn like // this. Polygon upperTriangle = new Polygon ( upperTriangleX , upperTriangleY , 3 ); flag . drawPolygon ( upperTriangle ); flag . setColor ( NEPALIFLAG ); // Setting color of our brave Gorkha Soldiers Blood flag . fillPolygon ( upperTriangle ); // For lower traingle int lowerTriangleX [] = { 210 , 390 , 210 }; // +180 for lower triangle int lowerTriangleY [] = { 160 , 340 , 340 }; Polygon lowerTriangle = new Polygon ( lowerTriangleX , lowerTriangleY , 3 ); flag . drawPolygon ( lowerTriangle ); flag . setColor ( NEPALIFLAG ); flag . fillPolygon ( lowerTriangle ); // For standing rod int rodX [] = { 207 , 210 , 210 , 207 }; int rodY [] = { 7 , 7 , 500 , 498 }; Polygon rod = new Polygon ( rodX , rodY , 4 ); flag . drawPolygon ( rod ); flag . setColor ( Color . black ); flag . fillPolygon ( rod ); // For borders int borderX [] = { 210 , 210 , 360 , 210 , 390 , 210 , 210 , 396 , 216 , 366 }; // 3 units int borderY [] = { 7 , 10 , 160 , 160 , 340 , 340 , 343 , 343 , 163 , 163 }; Polygon border = new Polygon ( borderX , borderY , 10 ); flag . drawPolygon ( border ); flag . setColor ( Color . blue ); flag . fillPolygon ( border ); // For moon // One Oval overlaps other Oval to form a Crescent moon; I was unable to learn // drawArc() at this moment. flag . setColor ( Color . white ); flag . fillOval ( 240 , 100 , 30 , 30 ); // Synatx : fillOval(int xPosition, int yPosition, width, height) flag . setColor ( NEPALIFLAG ); flag . fillOval ( 240 , 91 , 30 , 30 ); // For star int starX [] = { 240 , 250 , 255 , 260 , 270 , 265 , 270 , 260 , 255 , 250 , 240 , 245 }; int starY [] = { 260 , 260 , 250 , 260 , 260 , 270 , 280 , 280 , 290 , 280 , 280 , 270 }; // Starting is 240 Polygon star = new Polygon ( starX , starY , 12 ); flag . drawPolygon ( star ); flag . setColor ( Color . white ); flag . fillPolygon ( star ); } }","title":"General"},{"location":"applet/EXAMPLES/#passing-parameter","text":"Demonstrate the passing of parameters in Applet File.","title":"Passing Parameter"},{"location":"applet/EXAMPLES/#html-file","text":"< html > < head > < title > Passing Parameter to Applet < body > < applet code = \"ParamDemo.java\" height = \"300\" width = \"300\" > < param name = \"fontName\" value = \"Comic Sans MS\" > < param name = \"fontSize\" value = \"40\" > < param name = \"leadingfontName\" value = \"14.80\" > < param name = \"active\" value = \"true\" > ","title":"HTML File"},{"location":"applet/EXAMPLES/#java-file","text":"import java.applet.* ; import java.awt.* ; // Following HTML chunk will pass parameter to Applet. This is comment for Java Compiler but not for appletviewer, so altering the attribute of parameter never compell to recompile again. /*/ */ public class ParamDemo extends Applet { String fontName ; String param ; int fontSize ; float leading ; boolean active ; public void init () { // Param is not used here because to get the String value and again to pass to String, no temp variable (param) is needed. fontName = getParameter ( \"fontName\" ); if ( fontName == null ) { fontName = \"Not Specified\" ; } // Param is used as temporary String variable which retrieves the parameter passed. param = getParameter ( \"fontSize\" ); try { if ( param != null ) { fontSize = Integer . parseInt ( param ); // Converts the number in String to Integer data type. } else { fontSize = 0 ; } } catch ( NumberFormatException exc ) { fontSize = 0 ; } param = getParameter ( \"leading\" ); try { if ( param != null ) { leading = Float . valueOf ( param ). floatValue (); // Converts the number in String to Float data type. } else { leading = 0f ; } } catch ( NumberFormatException exc ) { leading = 0f ; } param = getParameter ( \"active\" ); if ( param != null ) { active = Boolean . valueOf ( param ). booleanValue (); // Converts the boolean value in String to Boolean data type. } } public void paint ( Graphics graphicsObject ) { graphicsObject . drawString ( \"Font Name : \" + fontName , 100 , 50 ); graphicsObject . drawString ( \"Font Size : \" + fontName , 100 , 60 ); graphicsObject . drawString ( \"Leading : \" + leading , 100 , 70 ); graphicsObject . drawString ( \"Active : \" + active , 100 , 80 ); } }","title":"Java File"},{"location":"applet/EXAMPLES/#display-available-fonts","text":"Display the available fonts in the system. /* This shows the available fonts in Host Computer. */ /* */ import java.awt.* ; import java.applet.* ; public class AvailableFonts extends Applet { public void paint ( Graphics g ) { String message = \"\" ; // Initialize string to empty first. String fontLists [] ; /* I don't get the below line. */ GraphicsEnvironment ge = GraphicsEnvironment . getLocalGraphicsEnvironment (); fontLists = ge . getAvailableFontFamilyNames (); for ( String fontList : fontLists ) { message += fontList + \"\\n \" ; g . drawString ( message , 10 , 20 ); } } }","title":"Display Available Fonts"},{"location":"applet/EXAMPLES/#custom-font-and-size","text":"Demonstrating applet with custom font text and size. import java.awt.* ; import java.applet.* ; // This HTML chunk is for passing parameter to appletviewer. /* > I read in Gandaki College of Information and Science.\"> */ public class CustomFont extends Applet { String param ; String fontName ; String title ; String message ; int fontSize ; // We are defining our custom font. So, font object is created. Font myFont ; public void init () { fontName = getParameter ( \"fontName\" ); if ( fontName == null ) { fontName = \"TimesRoman\" ; } title = getParameter ( \"title\" ); if ( title == null ) { title = \"Untitled\" ; } message = getParameter ( \"message\" ); if ( message == null ) { message = \"Write your description here.\" ; } param = getParameter ( \"fontSize\" ); try { if ( param != null ) { fontSize = Integer . parseInt ( param ); } else { fontSize = 10 ; // parameter pass garyo tara integer parse vayena vane } } catch ( NumberFormatException exc ) { fontSize = 15 ; // Parameter nai pass garena vane chahi yo run huncha } } public void paint ( Graphics g ) { // Font object Syntax : Font(font_name, Font.font_type, font_size); myFont = new Font ( fontName , Font . BOLD , fontSize ); g . setFont ( myFont ); // Setting the defined font for this object. setBackground ( Color . red ); // Setting background color. setForeground ( Color . white ); // Setting foreground color. g . drawString ( title , 20 , 50 ); myFont = new Font ( fontName , Font . PLAIN , fontSize ); // Defining new font-style for displaying message. g . setFont ( myFont ); // Setting the new font. g . drawString ( message , 20 , 80 ); } }","title":"Custom Font and Size"},{"location":"applet/EXAMPLES/#draw-nepali-flag","text":"Draw the Nepali Flag using the Applet and graphics. import java.applet.* ; import java.awt.* ; /* */ public class Flag extends Applet { static Color NEPALIFLAG = new Color ( 221 , 12 , 39 ); // Defines custom color public void paint ( Graphics flag ) { // Figure starts from (210,10) // For upper traingle int upperTriangleX [] = { 210 , 360 , 210 }; // +150 for upper triangle int upperTriangleY [] = { 10 , 160 , 160 }; // g.drawPolygon(upperTriangleX,upperTriangleY,3); // Also can be drawn like // this. Polygon upperTriangle = new Polygon ( upperTriangleX , upperTriangleY , 3 ); flag . drawPolygon ( upperTriangle ); flag . setColor ( NEPALIFLAG ); // Setting color of our brave Gorkha Soldiers Blood flag . fillPolygon ( upperTriangle ); // For lower traingle int lowerTriangleX [] = { 210 , 390 , 210 }; // +180 for lower triangle int lowerTriangleY [] = { 160 , 340 , 340 }; Polygon lowerTriangle = new Polygon ( lowerTriangleX , lowerTriangleY , 3 ); flag . drawPolygon ( lowerTriangle ); flag . setColor ( NEPALIFLAG ); flag . fillPolygon ( lowerTriangle ); // For standing rod int rodX [] = { 207 , 210 , 210 , 207 }; int rodY [] = { 7 , 7 , 500 , 498 }; Polygon rod = new Polygon ( rodX , rodY , 4 ); flag . drawPolygon ( rod ); flag . setColor ( Color . black ); flag . fillPolygon ( rod ); // For borders int borderX [] = { 210 , 210 , 360 , 210 , 390 , 210 , 210 , 396 , 216 , 366 }; // 3 units int borderY [] = { 7 , 10 , 160 , 160 , 340 , 340 , 343 , 343 , 163 , 163 }; Polygon border = new Polygon ( borderX , borderY , 10 ); flag . drawPolygon ( border ); flag . setColor ( Color . blue ); flag . fillPolygon ( border ); // For moon // One Oval overlaps other Oval to form a Crescent moon; I was unable to learn // drawArc() at this moment. flag . setColor ( Color . white ); flag . fillOval ( 240 , 100 , 30 , 30 ); // Synatx : fillOval(int xPosition, int yPosition, width, height) flag . setColor ( NEPALIFLAG ); flag . fillOval ( 240 , 91 , 30 , 30 ); // For star int starX [] = { 240 , 250 , 255 , 260 , 270 , 265 , 270 , 260 , 255 , 250 , 240 , 245 }; int starY [] = { 260 , 260 , 250 , 260 , 260 , 270 , 280 , 280 , 290 , 280 , 280 , 270 }; // Starting is 240 Polygon star = new Polygon ( starX , starY , 12 ); flag . drawPolygon ( star ); flag . setColor ( Color . white ); flag . fillPolygon ( star ); } }","title":"Draw Nepali Flag"},{"location":"applet/TUTORIAL/","text":"How to run an Applet? There are two ways to run an applet : By HTML file. By appletViewer tool (for testing purpose). Simple example of Applet by HTML file: To execute the applet by HTML file, create an applet and compile it. After that create an html file and place the applet code in HTML file. Now click the HTML file. //HelloApplet.java import java.applet.Applet; import java.awt.Graphics; public class HelloApplet extends Applet{ public void paint(Graphics g){ g.drawString(\"welcome\",150,150); } } Note: Class must be public because its object is created by Java Plugin software that resides on the browser. HelloApplet.html Applet's Demonstration Simple example of Applet by appletviewer tool: To execute the applet by appletviewer tool, create an applet that contains applet tag in comment and compile it. After that run it by: appletviewer HelloApplet.java. Now HTML file is not required but it is for testing purpose only. //HelloApplet.java import java.applet.Applet; import java.awt.Graphics; public class HelloApplet extends Applet{ public void paint(Graphics g){ g.drawString(\"welcome to applet\",150,150); } } To execute the applet by appletviewer tool, write in command prompt: c:\\>javac HelloApplet.java c:\\>appletviewer HelloApplet.java","title":"Walk Through"},{"location":"applet/TUTORIAL/#how-to-run-an-applet","text":"There are two ways to run an applet : By HTML file. By appletViewer tool (for testing purpose).","title":"How to run an Applet?"},{"location":"applet/TUTORIAL/#simple-example-of-applet-by-html-file","text":"To execute the applet by HTML file, create an applet and compile it. After that create an html file and place the applet code in HTML file. Now click the HTML file. //HelloApplet.java import java.applet.Applet; import java.awt.Graphics; public class HelloApplet extends Applet{ public void paint(Graphics g){ g.drawString(\"welcome\",150,150); } } Note: Class must be public because its object is created by Java Plugin software that resides on the browser. HelloApplet.html Applet's Demonstration ","title":"Simple example of Applet by HTML file:"},{"location":"applet/TUTORIAL/#simple-example-of-applet-by-appletviewer-tool","text":"To execute the applet by appletviewer tool, create an applet that contains applet tag in comment and compile it. After that run it by: appletviewer HelloApplet.java. Now HTML file is not required but it is for testing purpose only. //HelloApplet.java import java.applet.Applet; import java.awt.Graphics; public class HelloApplet extends Applet{ public void paint(Graphics g){ g.drawString(\"welcome to applet\",150,150); } } To execute the applet by appletviewer tool, write in command prompt: c:\\>javac HelloApplet.java c:\\>appletviewer HelloApplet.java","title":"Simple example of Applet by appletviewer tool:"},{"location":"applet/displayingImage/","text":"Displying Image in Applet Java will allow the applet to load the data holding the HTML file that started the applet (theDocumentBase) and the directory from which class file was loaded (codeBase). Both documentBase and codeBase return directories as URL object respectively. Code We've assumed there is an image named blue.jpg . import java.awt.* ; import java.applet.* ; /* */ public class DisplayImage extends Applet { public Image picture ; public void init () { picture = getImage ( getDocumentBase (), \"blue.jpg\" ); } public void paint ( Graphics g ){ g . drawImage ( picture , 30 , 30 , this ); } }","title":"Display Image"},{"location":"applet/displayingImage/#displying-image-in-applet","text":"Java will allow the applet to load the data holding the HTML file that started the applet (theDocumentBase) and the directory from which class file was loaded (codeBase). Both documentBase and codeBase return directories as URL object respectively.","title":"Displying Image in Applet"},{"location":"applet/displayingImage/#code","text":"We've assumed there is an image named blue.jpg . import java.awt.* ; import java.applet.* ; /* */ public class DisplayImage extends Applet { public Image picture ; public void init () { picture = getImage ( getDocumentBase (), \"blue.jpg\" ); } public void paint ( Graphics g ){ g . drawImage ( picture , 30 , 30 , this ); } }","title":"Code"},{"location":"applet/playingAudio/","text":"Playing Audio in Applet An applet can play an audio file represented by the AudioClip interface in the java.applet package. The AudioClip interface has three methods, including : public void play() \u2212 Plays the audio clip one time, from the beginning. public void loop() \u2212 Causes the audio clip to replay continually. public void stop() \u2212 Stops playing the audio clip. To obtain an AudioClip object, you must invoke the getAudioClip() method of the Applet class. The getAudioClip() method returns immediately, whether or not the URL resolves to an actual audio file. The audio file is not downloaded until an attempt is made to play the audio clip. Code We've assumed there is an audio clip named sample.wav . import java.awt.* ; import java.net.* ; // For URL objects import java.applet.* ; /* */ // AppletContext is an environment (interface) which helps to communicate with outer-environment and deal with media files such as audio, image. public class PlayAudio extends Applet { public AudioClip myMusic ; // Defining a variable of data type AudioClip. public AppletContext context ; public void init () { context = this . getAppletContext (); String audioURL = this . getParameter ( \"audioURL\" ); // This gets the parameter passed from applet. if ( audioURL == null ) { audioURL = \"sample.wav\" ; // If no parameter is passed. } try { URL myURL = new URL ( this . getDocumentBase (), audioURL ); // New URL object storing audio URL passed by user. myMusic = context . getAudioClip ( myURL ); // myMusic = this.getAudioClip(myURL); // Also can be done like this. } catch ( MalformedURLException exc ) { exc . printStackTrace (); context . showStatus ( \"Couldn't load audio file.\" ); // Showing status to the Browser status bar. } } public void start () { // When Applet starts if ( myMusic != null ) { myMusic . loop (); } } public void stop () { // When Applet stop if ( myMusic != null ) { myMusic . stop (); } } }","title":"Play Audio"},{"location":"applet/playingAudio/#playing-audio-in-applet","text":"An applet can play an audio file represented by the AudioClip interface in the java.applet package. The AudioClip interface has three methods, including : public void play() \u2212 Plays the audio clip one time, from the beginning. public void loop() \u2212 Causes the audio clip to replay continually. public void stop() \u2212 Stops playing the audio clip. To obtain an AudioClip object, you must invoke the getAudioClip() method of the Applet class. The getAudioClip() method returns immediately, whether or not the URL resolves to an actual audio file. The audio file is not downloaded until an attempt is made to play the audio clip.","title":"Playing Audio in Applet"},{"location":"applet/playingAudio/#code","text":"We've assumed there is an audio clip named sample.wav . import java.awt.* ; import java.net.* ; // For URL objects import java.applet.* ; /* */ // AppletContext is an environment (interface) which helps to communicate with outer-environment and deal with media files such as audio, image. public class PlayAudio extends Applet { public AudioClip myMusic ; // Defining a variable of data type AudioClip. public AppletContext context ; public void init () { context = this . getAppletContext (); String audioURL = this . getParameter ( \"audioURL\" ); // This gets the parameter passed from applet. if ( audioURL == null ) { audioURL = \"sample.wav\" ; // If no parameter is passed. } try { URL myURL = new URL ( this . getDocumentBase (), audioURL ); // New URL object storing audio URL passed by user. myMusic = context . getAudioClip ( myURL ); // myMusic = this.getAudioClip(myURL); // Also can be done like this. } catch ( MalformedURLException exc ) { exc . printStackTrace (); context . showStatus ( \"Couldn't load audio file.\" ); // Showing status to the Browser status bar. } } public void start () { // When Applet starts if ( myMusic != null ) { myMusic . loop (); } } public void stop () { // When Applet stop if ( myMusic != null ) { myMusic . stop (); } } }","title":"Code"},{"location":"array/","text":"Array Java provides a data structure, the array, which stores a fixed-size sequential collection of elements of the same type. An array is used to store a collection of data, but it is often more useful to think of an array as a collection of variables of the same type. Array is indexed collection of fixed number of homogeneous data element. Advantages We can represent huge number of value using single variable. So, that readability of code will be improved. Multiple data items of same data type can be accessed using single name. Arrays can be used to implement matrices. Data structure like queue , linked list can be accessed using arrays. Downpoints Fixed in size Since array is of fixed size, if we allocate more memory than requirement then the memory space will be wasted. And if we allocate less memory than requirement, then it will create problem. The elements of array are stored in consecutive memory locations. So insertions and deletions are very difficult and time consuming. Can only hold similar type of data. To overcome this, we use collection framework. Declaration int [] x ; int [] x ; int x [] ; One Dimensional Array int [ 6 ] x ; \u274c // We cannot define size in declaration. So, we must specify in creation. String [] args ; \u2705 Best way String [] args ; String args [] ; Two Dimensional Array int [][] x ; int [][] x ; int [] [] x ; int [] x [] ; int [][] x ; int [] x [] ; Instantiation int [] x = new int [ 1000 ] ; // fixed in size. Initilization int a [] = new int [ 5 ] ; //declaration and instantiation a [ 0 ] = 10 ; a [ 1 ] = 20 ; a [ 2 ] = 70 ; a [ 3 ] = 40 ; a [ 4 ] = 50 ; Note Every Object in Java is object only. For every array type, corresponding class are available but not available in programming level. System . out . println ( a . getClass (). getName ()); Array Type Corresponding Class Name int[ ] [ I int[ ][ ] [ [ I double[ ] [ D short[ ] [ S byte[ ] [ B boolean[ ] [ Z char[ ] [ C long[ ] [ J Examples int [] a , b ; -> 1D Array int [] a [] , b [] ; -> 2D Array int [] [] a , b [] ; -> 2D , 3D Array int [] a [] b ; -> 2D Array int [] [] a , b ; -> 2D Array int [][] a , [] b ; \u274c // [ ] can be shared with all, if it comes before variable. int [] x = new int [] ; // \u274c Size should be mentioned. int [] x = new int [ 0 ] ; \u2705 int [] x = new int [- 2 ] ; // \u2705 Runtime error; though compiled. byte b = 20 ; int [] x = new int [ b ] ; int [] x = new int [ 'b' ] ; // Character ASCII gets inputed. Internal Representation Follwing way, we can know more about the internal representation of Arrays. class InternalRepresentation { public static void main ( String [] args ) { // Integer[] array = new Integer[2]; int [] array = new int [ 2 ] ; int [][] twoDArray = new int [ 2 ][ 2 ] ; double itsDouble [] = new double [ 2 ] ; short itsShort [] = new short [ 2 ] ; byte itsByte [] = new byte [ 2 ] ; boolean itsBoolean [] = new boolean [ 2 ] ; char itsChar [] = new char [ 2 ] ; long itsLong [] = new long [ 2 ] ; System . out . println ( \"Array : \" + array . getClass (). getName ()); System . out . println ( \"2D Array : \" + twoDArray . getClass (). getName ()); System . out . println ( \"Double : \" + itsDouble . getClass (). getName ()); System . out . println ( \"Short : \" + itsShort . getClass (). getName ()); System . out . println ( \"Byte : \" + itsByte . getClass (). getName ()); System . out . println ( \"Boolean : \" + itsBoolean . getClass (). getName ()); System . out . println ( \"Char : \" + itsChar . getClass (). getName ()); System . out . println ( \"Long : \" + itsLong . getClass (). getName ()); // For every array type, corresponding class are available but not available in // programming level. } }","title":"Introduction"},{"location":"array/#array","text":"Java provides a data structure, the array, which stores a fixed-size sequential collection of elements of the same type. An array is used to store a collection of data, but it is often more useful to think of an array as a collection of variables of the same type. Array is indexed collection of fixed number of homogeneous data element.","title":"Array"},{"location":"array/#advantages","text":"We can represent huge number of value using single variable. So, that readability of code will be improved. Multiple data items of same data type can be accessed using single name. Arrays can be used to implement matrices. Data structure like queue , linked list can be accessed using arrays.","title":"Advantages"},{"location":"array/#downpoints","text":"Fixed in size Since array is of fixed size, if we allocate more memory than requirement then the memory space will be wasted. And if we allocate less memory than requirement, then it will create problem. The elements of array are stored in consecutive memory locations. So insertions and deletions are very difficult and time consuming. Can only hold similar type of data. To overcome this, we use collection framework.","title":"Downpoints"},{"location":"array/#declaration","text":"int [] x ; int [] x ; int x [] ;","title":"Declaration"},{"location":"array/#one-dimensional-array","text":"int [ 6 ] x ; \u274c // We cannot define size in declaration. So, we must specify in creation. String [] args ; \u2705 Best way String [] args ; String args [] ;","title":"One Dimensional Array"},{"location":"array/#two-dimensional-array","text":"int [][] x ; int [][] x ; int [] [] x ; int [] x [] ; int [][] x ; int [] x [] ;","title":"Two Dimensional Array"},{"location":"array/#instantiation","text":"int [] x = new int [ 1000 ] ; // fixed in size.","title":"Instantiation"},{"location":"array/#initilization","text":"int a [] = new int [ 5 ] ; //declaration and instantiation a [ 0 ] = 10 ; a [ 1 ] = 20 ; a [ 2 ] = 70 ; a [ 3 ] = 40 ; a [ 4 ] = 50 ;","title":"Initilization"},{"location":"array/#note","text":"Every Object in Java is object only. For every array type, corresponding class are available but not available in programming level. System . out . println ( a . getClass (). getName ()); Array Type Corresponding Class Name int[ ] [ I int[ ][ ] [ [ I double[ ] [ D short[ ] [ S byte[ ] [ B boolean[ ] [ Z char[ ] [ C long[ ] [ J","title":"Note"},{"location":"array/#examples","text":"int [] a , b ; -> 1D Array int [] a [] , b [] ; -> 2D Array int [] [] a , b [] ; -> 2D , 3D Array int [] a [] b ; -> 2D Array int [] [] a , b ; -> 2D Array int [][] a , [] b ; \u274c // [ ] can be shared with all, if it comes before variable. int [] x = new int [] ; // \u274c Size should be mentioned. int [] x = new int [ 0 ] ; \u2705 int [] x = new int [- 2 ] ; // \u2705 Runtime error; though compiled. byte b = 20 ; int [] x = new int [ b ] ; int [] x = new int [ 'b' ] ; // Character ASCII gets inputed.","title":"Examples"},{"location":"array/#internal-representation","text":"Follwing way, we can know more about the internal representation of Arrays. class InternalRepresentation { public static void main ( String [] args ) { // Integer[] array = new Integer[2]; int [] array = new int [ 2 ] ; int [][] twoDArray = new int [ 2 ][ 2 ] ; double itsDouble [] = new double [ 2 ] ; short itsShort [] = new short [ 2 ] ; byte itsByte [] = new byte [ 2 ] ; boolean itsBoolean [] = new boolean [ 2 ] ; char itsChar [] = new char [ 2 ] ; long itsLong [] = new long [ 2 ] ; System . out . println ( \"Array : \" + array . getClass (). getName ()); System . out . println ( \"2D Array : \" + twoDArray . getClass (). getName ()); System . out . println ( \"Double : \" + itsDouble . getClass (). getName ()); System . out . println ( \"Short : \" + itsShort . getClass (). getName ()); System . out . println ( \"Byte : \" + itsByte . getClass (). getName ()); System . out . println ( \"Boolean : \" + itsBoolean . getClass (). getName ()); System . out . println ( \"Char : \" + itsChar . getClass (). getName ()); System . out . println ( \"Long : \" + itsLong . getClass (). getName ()); // For every array type, corresponding class are available but not available in // programming level. } }","title":"Internal Representation"},{"location":"array/extra/","text":"Array Examples Arrays class Array { public static void main ( String args [] ){ int days [] ; days = new int [ 12 ] ; for ( int i = 0 ; i < 12 ; i ++ ){ days [ i ] = i ; } for ( int i = 0 ; i < 12 ; i ++ ){ System . out . println ( \"Day : \" + days [ i ] ); } System . out . println ( days . getClass (). getName ()); } } Alternate Array Declaration class AlternativeArrayDeclaration { public static void main ( String args [] ){ /* Array can be declared like : type_name[] variable_name; for eg: public static void main(String[] args) */ int a1 [] = new int [ 3 ] ; int [] a2 = new int [ 2 ] ; /* We can also declare multiple arrays at a time by this method. */ int [] a3 , a4 , a5 = new int [ 3 ] ; /* which creates the three array variables of integer type */ } } Array Assignment class ArrayAssignment { public static void main ( String args [] ){ int month [] = { 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 }; for ( int i = 0 ; i < 12 ; i ++ ){ System . out . println ( \"Month : \" + month [ i ] ); } } } Average Using Arrays class Average { public static void main ( String args [] ){ double marks [] = { 40.6 , 30.5 , 90.3 , 20.8 , 87.5 }; double result = 0 ; for ( int i = 0 ; i < 5 ; i ++ ){ result += marks [ i ] ; } System . out . println ( \"Percentage = \" + result / 5 ); } } Two Dimensional Array class TwoDimensionalArray { public static void main ( String args [] ){ int nums [][] = new int [ 4 ][ 5 ] ; int i , j , k = 0 ; for ( i = 0 ; i < 4 ; i ++ ){ for ( j = 0 ; j < 5 ; j ++ ){ nums [ i ][ j ] = k ; k ++ ; } } for ( i = 0 ; i < 4 ; i ++ ){ for ( j = 0 ; j < 5 ; j ++ ){ System . out . print ( nums [ i ][ j ]+ \" \" ); /* Print doesn't gets printed in new line , but println does. Know the difference. */ } System . out . println (); } System . out . println ( nums . getClass (). getName ()); // This returns the class name for corressponding array type. } } Double Two Dimensional Array class DoubleTwoDArray { public static void main ( String args [] ){ double nums [][]= { { 0.0 , 1.0 , 2.0 }, { 3.0 , 4.0 , 5.0 }, { 6.0 , 7.0 , 8 , 0 } }; /* Two declare a two dimensional array, the last braces should be ended with braces as like Class in C++ . */ for ( int i = 0 ; i < 3 ; i ++ ){ for ( int j = 0 ; j < 3 ; j ++ ){ System . out . print ( nums [ i ][ j ]+ \" \" ); } System . out . println (); } } } Two Dimensional Array Manual Allocation class TwoDArray { public static void main ( String args [] ){ int nums [][] = new int [ 4 ][] ; nums [ 0 ] = new int [ 1 ] ; nums [ 1 ] = new int [ 2 ] ; nums [ 2 ] = new int [ 3 ] ; nums [ 3 ] = new int [ 4 ] ; int k = 0 ; for ( int i = 0 ; i < 4 ; i ++ ){ for ( int j = 0 ; i < i + 1 ; j ++ ){ nums [ i ][ j ]= k ; k ++ ; } } for ( int i = 0 ; i < 4 ; i ++ ){ for ( int j = 0 ; i < i + 1 ; j ++ ){ System . out . print ( nums [ i ][ j ] + \" \" ); } System . out . println (); } } } Three Dimensional Array class ThreeDimensionalArray { public static void main ( String args [] ){ int nums [][][] = new int [ 3 ][ 3 ][ 3 ] ; int l = 0 ; for ( int i = 0 ; i < 3 ; i ++ ){ for ( int j = 0 ; j < 3 ; j ++ ){ for ( int k = 0 ; k < 3 ; k ++ ){ nums [ i ][ j ][ k ] = l ; l ++ ; } } } for ( int i = 0 ; i < 3 ; i ++ ){ for ( int j = 0 ; j < 3 ; j ++ ){ for ( int k = 0 ; k < 3 ; k ++ ){ System . out . print ( nums [ i ][ j ][ k ]+ \" \" ); } System . out . println (); } System . out . println ( \"\\n\" ); } } }","title":"Examples"},{"location":"array/extra/#array-examples","text":"","title":"Array Examples"},{"location":"array/extra/#arrays","text":"class Array { public static void main ( String args [] ){ int days [] ; days = new int [ 12 ] ; for ( int i = 0 ; i < 12 ; i ++ ){ days [ i ] = i ; } for ( int i = 0 ; i < 12 ; i ++ ){ System . out . println ( \"Day : \" + days [ i ] ); } System . out . println ( days . getClass (). getName ()); } }","title":"Arrays"},{"location":"array/extra/#alternate-array-declaration","text":"class AlternativeArrayDeclaration { public static void main ( String args [] ){ /* Array can be declared like : type_name[] variable_name; for eg: public static void main(String[] args) */ int a1 [] = new int [ 3 ] ; int [] a2 = new int [ 2 ] ; /* We can also declare multiple arrays at a time by this method. */ int [] a3 , a4 , a5 = new int [ 3 ] ; /* which creates the three array variables of integer type */ } }","title":"Alternate Array Declaration"},{"location":"array/extra/#array-assignment","text":"class ArrayAssignment { public static void main ( String args [] ){ int month [] = { 1 , 2 , 3 , 4 , 5 , 6 , 7 , 8 , 9 , 10 , 11 , 12 }; for ( int i = 0 ; i < 12 ; i ++ ){ System . out . println ( \"Month : \" + month [ i ] ); } } }","title":"Array Assignment"},{"location":"array/extra/#average-using-arrays","text":"class Average { public static void main ( String args [] ){ double marks [] = { 40.6 , 30.5 , 90.3 , 20.8 , 87.5 }; double result = 0 ; for ( int i = 0 ; i < 5 ; i ++ ){ result += marks [ i ] ; } System . out . println ( \"Percentage = \" + result / 5 ); } }","title":"Average Using Arrays"},{"location":"array/extra/#two-dimensional-array","text":"class TwoDimensionalArray { public static void main ( String args [] ){ int nums [][] = new int [ 4 ][ 5 ] ; int i , j , k = 0 ; for ( i = 0 ; i < 4 ; i ++ ){ for ( j = 0 ; j < 5 ; j ++ ){ nums [ i ][ j ] = k ; k ++ ; } } for ( i = 0 ; i < 4 ; i ++ ){ for ( j = 0 ; j < 5 ; j ++ ){ System . out . print ( nums [ i ][ j ]+ \" \" ); /* Print doesn't gets printed in new line , but println does. Know the difference. */ } System . out . println (); } System . out . println ( nums . getClass (). getName ()); // This returns the class name for corressponding array type. } }","title":"Two Dimensional Array"},{"location":"array/extra/#double-two-dimensional-array","text":"class DoubleTwoDArray { public static void main ( String args [] ){ double nums [][]= { { 0.0 , 1.0 , 2.0 }, { 3.0 , 4.0 , 5.0 }, { 6.0 , 7.0 , 8 , 0 } }; /* Two declare a two dimensional array, the last braces should be ended with braces as like Class in C++ . */ for ( int i = 0 ; i < 3 ; i ++ ){ for ( int j = 0 ; j < 3 ; j ++ ){ System . out . print ( nums [ i ][ j ]+ \" \" ); } System . out . println (); } } }","title":"Double Two Dimensional Array"},{"location":"array/extra/#two-dimensional-array-manual-allocation","text":"class TwoDArray { public static void main ( String args [] ){ int nums [][] = new int [ 4 ][] ; nums [ 0 ] = new int [ 1 ] ; nums [ 1 ] = new int [ 2 ] ; nums [ 2 ] = new int [ 3 ] ; nums [ 3 ] = new int [ 4 ] ; int k = 0 ; for ( int i = 0 ; i < 4 ; i ++ ){ for ( int j = 0 ; i < i + 1 ; j ++ ){ nums [ i ][ j ]= k ; k ++ ; } } for ( int i = 0 ; i < 4 ; i ++ ){ for ( int j = 0 ; i < i + 1 ; j ++ ){ System . out . print ( nums [ i ][ j ] + \" \" ); } System . out . println (); } } }","title":"Two Dimensional Array Manual Allocation"},{"location":"array/extra/#three-dimensional-array","text":"class ThreeDimensionalArray { public static void main ( String args [] ){ int nums [][][] = new int [ 3 ][ 3 ][ 3 ] ; int l = 0 ; for ( int i = 0 ; i < 3 ; i ++ ){ for ( int j = 0 ; j < 3 ; j ++ ){ for ( int k = 0 ; k < 3 ; k ++ ){ nums [ i ][ j ][ k ] = l ; l ++ ; } } } for ( int i = 0 ; i < 3 ; i ++ ){ for ( int j = 0 ; j < 3 ; j ++ ){ for ( int k = 0 ; k < 3 ; k ++ ){ System . out . print ( nums [ i ][ j ][ k ]+ \" \" ); } System . out . println (); } System . out . println ( \"\\n\" ); } } }","title":"Three Dimensional Array"},{"location":"array/arrayRepresentation01/","text":"Array Representation 01 This representation of array shows how the memory blocks are allocated to the array. Value is not assigned to the memory blocks, though. Source Code class ArrayRepresentation { public static void main ( String [] args ) { // First the level of the array is pre-defined, and initial indearray of the // array is mentioned in assignation. int [][][] array = new int [ 2 ][][] ; // First Level array [ 0 ] = new int [ 3 ][] ; array [ 1 ] = new int [ 2 ][] ; // Second Level array [ 0 ][ 0 ] = new int [ 1 ] ; array [ 0 ][ 1 ] = new int [ 2 ] ; array [ 0 ][ 2 ] = new int [ 3 ] ; array [ 1 ][ 0 ] = new int [ 2 ] ; array [ 1 ][ 1 ] = new int [ 2 ] ; // In this way, the memory blocks are allocated and no memory leakage happens // here. } }","title":"Array Representation 01"},{"location":"array/arrayRepresentation01/#array-representation-01","text":"This representation of array shows how the memory blocks are allocated to the array. Value is not assigned to the memory blocks, though.","title":"Array Representation 01"},{"location":"array/arrayRepresentation01/#source-code","text":"class ArrayRepresentation { public static void main ( String [] args ) { // First the level of the array is pre-defined, and initial indearray of the // array is mentioned in assignation. int [][][] array = new int [ 2 ][][] ; // First Level array [ 0 ] = new int [ 3 ][] ; array [ 1 ] = new int [ 2 ][] ; // Second Level array [ 0 ][ 0 ] = new int [ 1 ] ; array [ 0 ][ 1 ] = new int [ 2 ] ; array [ 0 ][ 2 ] = new int [ 3 ] ; array [ 1 ][ 0 ] = new int [ 2 ] ; array [ 1 ][ 1 ] = new int [ 2 ] ; // In this way, the memory blocks are allocated and no memory leakage happens // here. } }","title":"Source Code"},{"location":"array/arrayRepresentation02/","text":"Array Representation 02 This representation of array teaches how to allocate the memory block to the elements and assign the integer value to those memory blocks. Source Code // Let's Experience 5D Array // www.github.com/thearjun/Java class ArrayRepresentation { public static void main ( String [] args ){ // First Level int [][][][][] array = new int [ 4 ][][][][] ; // Second Level array [ 0 ] = new int [ 1 ][][][] ; array [ 1 ] = new int [ 1 ][][][] ; array [ 2 ] = new int [ 1 ][][][] ; array [ 3 ] = new int [ 3 ][][][] ; // Third Level array [ 0 ][ 0 ] = new int [ 2 ][][] ; array [ 2 ][ 0 ] = new int [ 2 ][][] ; array [ 3 ][ 0 ] = new int [ 1 ][][] ; // Fourth Level array [ 0 ][ 0 ][ 0 ] = new int [ 2 ][] ; array [ 0 ][ 0 ][ 1 ] = new int [ 1 ][] ; // Fifth Level array [ 0 ][ 0 ][ 1 ][ 0 ] = new int [ 2 ] ; // Value Assign for first level array [ 0 ][ 0 ][ 0 ][ 0 ][ 0 ] = 1 ; array [ 1 ][ 0 ][ 0 ][ 0 ][ 0 ] = 2 ; array [ 2 ][ 0 ][ 0 ][ 0 ][ 0 ] = 3 ; array [ 3 ][ 0 ][ 0 ][ 0 ][ 0 ] = 4 ; // Value assign for second level array [ 0 ][ 0 ][ 0 ][ 0 ][ 0 ] = 5 ; array [ 1 ][ 0 ][ 0 ][ 0 ][ 0 ] = 13 ; array [ 2 ][ 0 ][ 0 ][ 0 ][ 0 ] = 14 ; array [ 3 ][ 0 ][ 0 ][ 0 ][ 0 ] = 18 ; array [ 3 ][ 1 ][ 0 ][ 0 ][ 0 ] = 19 ; array [ 3 ][ 2 ][ 0 ][ 0 ][ 0 ] = 20 ; // Value assign for third level array [ 0 ][ 0 ][ 0 ][ 0 ][ 0 ] = 6 ; array [ 0 ][ 0 ][ 0 ][ 0 ][ 0 ] = 6 ; array [ 2 ][ 0 ][ 0 ][ 0 ][ 0 ] = 15 ; array [ 2 ][ 0 ][ 1 ][ 0 ][ 0 ] = 16 ; array [ 3 ][ 0 ][ 0 ][ 0 ][ 0 ] = 17 ; // Value assign for fourth level array [ 0 ][ 0 ][ 0 ][ 0 ][ 0 ] = 8 ; array [ 0 ][ 0 ][ 0 ][ 1 ][ 0 ] = 9 ; array [ 0 ][ 0 ][ 1 ][ 0 ][ 0 ] = 10 ; // Value assign for fifth level array [ 0 ][ 0 ][ 1 ][ 0 ][ 0 ] = 11 ; array [ 0 ][ 0 ][ 1 ][ 0 ][ 1 ] = 12 ; // // Now we are printing the elements of array. We know that we haven't assigned 0 to any of those memory blocks, so we print the elements which are not zero. // System.out.println(\"First Level Elements : [ \"); // for(int i = 0; i < 4; i++){ // System.out.println(array[i]+\" \"); // // if(array[i]!=0){ // // System.out.println(array[i]+\" \"); // // } // } // System.out.print(\"]\"); } }","title":"Array Representation 02"},{"location":"array/arrayRepresentation02/#array-representation-02","text":"This representation of array teaches how to allocate the memory block to the elements and assign the integer value to those memory blocks.","title":"Array Representation 02"},{"location":"array/arrayRepresentation02/#source-code","text":"// Let's Experience 5D Array // www.github.com/thearjun/Java class ArrayRepresentation { public static void main ( String [] args ){ // First Level int [][][][][] array = new int [ 4 ][][][][] ; // Second Level array [ 0 ] = new int [ 1 ][][][] ; array [ 1 ] = new int [ 1 ][][][] ; array [ 2 ] = new int [ 1 ][][][] ; array [ 3 ] = new int [ 3 ][][][] ; // Third Level array [ 0 ][ 0 ] = new int [ 2 ][][] ; array [ 2 ][ 0 ] = new int [ 2 ][][] ; array [ 3 ][ 0 ] = new int [ 1 ][][] ; // Fourth Level array [ 0 ][ 0 ][ 0 ] = new int [ 2 ][] ; array [ 0 ][ 0 ][ 1 ] = new int [ 1 ][] ; // Fifth Level array [ 0 ][ 0 ][ 1 ][ 0 ] = new int [ 2 ] ; // Value Assign for first level array [ 0 ][ 0 ][ 0 ][ 0 ][ 0 ] = 1 ; array [ 1 ][ 0 ][ 0 ][ 0 ][ 0 ] = 2 ; array [ 2 ][ 0 ][ 0 ][ 0 ][ 0 ] = 3 ; array [ 3 ][ 0 ][ 0 ][ 0 ][ 0 ] = 4 ; // Value assign for second level array [ 0 ][ 0 ][ 0 ][ 0 ][ 0 ] = 5 ; array [ 1 ][ 0 ][ 0 ][ 0 ][ 0 ] = 13 ; array [ 2 ][ 0 ][ 0 ][ 0 ][ 0 ] = 14 ; array [ 3 ][ 0 ][ 0 ][ 0 ][ 0 ] = 18 ; array [ 3 ][ 1 ][ 0 ][ 0 ][ 0 ] = 19 ; array [ 3 ][ 2 ][ 0 ][ 0 ][ 0 ] = 20 ; // Value assign for third level array [ 0 ][ 0 ][ 0 ][ 0 ][ 0 ] = 6 ; array [ 0 ][ 0 ][ 0 ][ 0 ][ 0 ] = 6 ; array [ 2 ][ 0 ][ 0 ][ 0 ][ 0 ] = 15 ; array [ 2 ][ 0 ][ 1 ][ 0 ][ 0 ] = 16 ; array [ 3 ][ 0 ][ 0 ][ 0 ][ 0 ] = 17 ; // Value assign for fourth level array [ 0 ][ 0 ][ 0 ][ 0 ][ 0 ] = 8 ; array [ 0 ][ 0 ][ 0 ][ 1 ][ 0 ] = 9 ; array [ 0 ][ 0 ][ 1 ][ 0 ][ 0 ] = 10 ; // Value assign for fifth level array [ 0 ][ 0 ][ 1 ][ 0 ][ 0 ] = 11 ; array [ 0 ][ 0 ][ 1 ][ 0 ][ 1 ] = 12 ; // // Now we are printing the elements of array. We know that we haven't assigned 0 to any of those memory blocks, so we print the elements which are not zero. // System.out.println(\"First Level Elements : [ \"); // for(int i = 0; i < 4; i++){ // System.out.println(array[i]+\" \"); // // if(array[i]!=0){ // // System.out.println(array[i]+\" \"); // // } // } // System.out.print(\"]\"); } }","title":"Source Code"},{"location":"array/conventional/","text":"Conventional Way Of Declaring Array This method of declaring array is often referred as conventional way of declaring array.","title":"Index"},{"location":"array/conventional/#conventional-way-of-declaring-array","text":"This method of declaring array is often referred as conventional way of declaring array.","title":"Conventional Way Of Declaring Array"},{"location":"array/matrixRepresentation/","text":"Matrix Representation This type of array declaration is represented in matrix form. Memory wastage is most probable to happen in this scenario and manually unassigned blocks of memory are automatically assigned to zero. class MatrixRepresentation { public static void main ( String [] args ) { int [][] x = new int [ 4 ][ 4 ] ; x [ 0 ][ 0 ] = 10 ; x [ 0 ][ 1 ] = 12 ; x [ 0 ][ 2 ] = 99 ; x [ 0 ][ 3 ] = 89 ; x [ 1 ][ 0 ] = 28 ; x [ 1 ][ 1 ] = 67 ; x [ 1 ][ 2 ] = 56 ; x [ 2 ][ 0 ] = 80 ; x [ 2 ][ 1 ] = 90 ; x [ 3 ][ 0 ] = 90 ; for ( int i = 0 ; i < 4 ; i ++ ) { for ( int j = 0 ; j < 4 ; j ++ ) { System . out . println ( \"x[\" + i + \"][\" + j + \"] = \" + x [ i ][ j ] ); } System . out . println (); } System . out . println ( \"The unassigned block of memory are assigned to zero.\" ); } } Conventional Representation This method of declaring array is often referred as conventional way of declaring array. class ConventionalWay { public static void main ( String [] args ){ int [][] x = new int [ 4 ][ 3 ] ; // The no of pairs of brackets represents the level of array i.e. dimensions. } }","title":"Matrix Representation"},{"location":"array/matrixRepresentation/#matrix-representation","text":"This type of array declaration is represented in matrix form. Memory wastage is most probable to happen in this scenario and manually unassigned blocks of memory are automatically assigned to zero. class MatrixRepresentation { public static void main ( String [] args ) { int [][] x = new int [ 4 ][ 4 ] ; x [ 0 ][ 0 ] = 10 ; x [ 0 ][ 1 ] = 12 ; x [ 0 ][ 2 ] = 99 ; x [ 0 ][ 3 ] = 89 ; x [ 1 ][ 0 ] = 28 ; x [ 1 ][ 1 ] = 67 ; x [ 1 ][ 2 ] = 56 ; x [ 2 ][ 0 ] = 80 ; x [ 2 ][ 1 ] = 90 ; x [ 3 ][ 0 ] = 90 ; for ( int i = 0 ; i < 4 ; i ++ ) { for ( int j = 0 ; j < 4 ; j ++ ) { System . out . println ( \"x[\" + i + \"][\" + j + \"] = \" + x [ i ][ j ] ); } System . out . println (); } System . out . println ( \"The unassigned block of memory are assigned to zero.\" ); } }","title":"Matrix Representation"},{"location":"array/matrixRepresentation/#conventional-representation","text":"This method of declaring array is often referred as conventional way of declaring array. class ConventionalWay { public static void main ( String [] args ){ int [][] x = new int [ 4 ][ 3 ] ; // The no of pairs of brackets represents the level of array i.e. dimensions. } }","title":"Conventional Representation"},{"location":"controlStatements/","text":"A control statement in java is a statement that determines whether the other statements will be executed or not. It controls the flow of a program. If Statement Examples 1. Boolean Variable as Argument class IfTest { public static void main ( String [] args ) { boolean x = false ; if ( x = false ) { // This compile as if statement expects boolean value as parameter. This also throws false. System . out . println ( \"Hello Mercury\" ); } else { System . out . println ( \"Hello Venus\" ); } } } 2. Integer Variable as Argument This doesn't compile as if statement expects boolean value as parameter. class IfTest { public static void main ( String [] args ){ int x = 0 ; if ( x ){ // This doesn't compile as if statement expects boolean value as parameter. System . out . println ( \"Hello Mercury\" ); } else { System . out . println ( \"Hello Venus\" ); } } }","title":"Controls"},{"location":"controlStatements/#if-statement-examples","text":"","title":"If Statement Examples"},{"location":"controlStatements/#1-boolean-variable-as-argument","text":"class IfTest { public static void main ( String [] args ) { boolean x = false ; if ( x = false ) { // This compile as if statement expects boolean value as parameter. This also throws false. System . out . println ( \"Hello Mercury\" ); } else { System . out . println ( \"Hello Venus\" ); } } }","title":"1. Boolean Variable as Argument"},{"location":"controlStatements/#2-integer-variable-as-argument","text":"This doesn't compile as if statement expects boolean value as parameter. class IfTest { public static void main ( String [] args ){ int x = 0 ; if ( x ){ // This doesn't compile as if statement expects boolean value as parameter. System . out . println ( \"Hello Mercury\" ); } else { System . out . println ( \"Hello Venus\" ); } } }","title":"2. Integer Variable as Argument"},{"location":"dataStructures/","text":"Examples 1. Stack class Sample { public int [] itsStack = new int [] ; public boolean isEmpty (){ } public boolean isFull (){ } public boolean push (){ } public boolean pop (){ } public int top (){ } public void display (){ } } class Stack { public static void main ( String [] args ){ } } 2. Tower Of Hanoi // TOH refers to Tower Of Hanoi. public class TOH { // Defining a method which accepts parameters as: no of disks, name of rods (should match according to name of formal arguments passed). public void tower ( int noOfDisks , String sourceRod , String destinationRod , String auxiliaryRod ){ if ( noOfDisks == 1 ){ System . out . format ( \"\\nRod %d moved from %s to %s\" , 1 , sourceRod , destinationRod ); return ; } else { // Key Algorithms : tower ( noOfDisks - 1 , \"Source Rod\" , \"Auxiliary Rod\" , \"Destination Rod\" ); System . out . format ( \"\\nDisk %d moved from %s to %s\" , noOfDisks , sourceRod , destinationRod ); tower ( noOfDisks - 1 , \"Auxiliary Rod\" , \"Destination Rod\" , \"Source Rod\" ); } } } Driver Code // TOHDemo refers to Tower Of Hanoi Demo. class TOHDemo { public static void main ( String [] args ){ // This accepts the no of disks int noOfDisks = 4 ; TOH objectOne = new TOH (); // Passing the no of disks and rod names to recursive function. objectOne . tower ( noOfDisks , \"Source Rod\" , \"Destination Rod\" , \"Auxilary Rod\" ); } } 2. Block Chain import java.util.Arrays ; public class Block { private int previousHash ; private String [] transaction ; private int blockHash ; public Block ( int previousHash , String [] transaction ){ this . previousHash = previousHash ; this . transaction = transaction ; Object [] contents = { Arrays . hashCode ( transaction ), previousHash }; this . blockHash = Arrays . hashCode ( contents ); } public int getPreviousHash (){ return previousHash ; } public String [] getTransaction (){ return transaction ; } } Driver Code import java.lang.* ; import java.util.* ; import java.text.* ; public class Main { ArrayList < Block > blockchain = new ArrayList <> (); public static void main ( String [] args ){ Block genesisBlock = new Block ( previousHash ) } }","title":"Data Structures"},{"location":"dataStructures/#examples","text":"","title":"Examples"},{"location":"dataStructures/#1-stack","text":"class Sample { public int [] itsStack = new int [] ; public boolean isEmpty (){ } public boolean isFull (){ } public boolean push (){ } public boolean pop (){ } public int top (){ } public void display (){ } } class Stack { public static void main ( String [] args ){ } }","title":"1. Stack"},{"location":"dataStructures/#2-tower-of-hanoi","text":"// TOH refers to Tower Of Hanoi. public class TOH { // Defining a method which accepts parameters as: no of disks, name of rods (should match according to name of formal arguments passed). public void tower ( int noOfDisks , String sourceRod , String destinationRod , String auxiliaryRod ){ if ( noOfDisks == 1 ){ System . out . format ( \"\\nRod %d moved from %s to %s\" , 1 , sourceRod , destinationRod ); return ; } else { // Key Algorithms : tower ( noOfDisks - 1 , \"Source Rod\" , \"Auxiliary Rod\" , \"Destination Rod\" ); System . out . format ( \"\\nDisk %d moved from %s to %s\" , noOfDisks , sourceRod , destinationRod ); tower ( noOfDisks - 1 , \"Auxiliary Rod\" , \"Destination Rod\" , \"Source Rod\" ); } } } Driver Code // TOHDemo refers to Tower Of Hanoi Demo. class TOHDemo { public static void main ( String [] args ){ // This accepts the no of disks int noOfDisks = 4 ; TOH objectOne = new TOH (); // Passing the no of disks and rod names to recursive function. objectOne . tower ( noOfDisks , \"Source Rod\" , \"Destination Rod\" , \"Auxilary Rod\" ); } }","title":"2. Tower Of Hanoi"},{"location":"dataStructures/#2-block-chain","text":"import java.util.Arrays ; public class Block { private int previousHash ; private String [] transaction ; private int blockHash ; public Block ( int previousHash , String [] transaction ){ this . previousHash = previousHash ; this . transaction = transaction ; Object [] contents = { Arrays . hashCode ( transaction ), previousHash }; this . blockHash = Arrays . hashCode ( contents ); } public int getPreviousHash (){ return previousHash ; } public String [] getTransaction (){ return transaction ; } } Driver Code import java.lang.* ; import java.util.* ; import java.text.* ; public class Main { ArrayList < Block > blockchain = new ArrayList <> (); public static void main ( String [] args ){ Block genesisBlock = new Block ( previousHash ) } }","title":"2. Block Chain"},{"location":"events/","text":"Event Handling What is Event ? Change in the state of an object is known as event. i.e. event describes the change i state of source. Events are generated as a result of user interaction with GUI components . But they can also be generated explicitly. For eg: Clicking on a button, moving the mouse, entering character through keyboard. What is Event Listener ? A Listener is an object that is notified when an event occurs. a.k.a Event Handler . (also known as) Listener is responsible for generating response to an event. It has two major requirements: First , it must have been registered with one or more source to receive notifications about specific types of events. It must implement methods to receive and process these notifications. What is Event Source ? A source is an object that generates an event. This occurs when the internal state of the object chages in some way. Source may generate more than one tyoe of event. A source must register listeners in order for the listeners to recieve notifications about specific type of event. Each type of event has its own registration method. Here is the general form. public void addTypeListener (TypeListener el) // el = event listener For eg: addKeyListener() Here Type is the name of the event and el is the reference to the event listener. When an event occurs, all registered listeners are notified and recieve a copy of event object. This is known as multicasting the event . Some sources may allow only one listener to register. When such an event occurs, the registered listener is notified. This is known as unicasting the event . A source must also provide method that allows a listener to unregister an interest in a specific type of event. The general form: public void removeTypeListener(TypeListener el) What is Event Handling ? It is the mechanism that controls the event and decides what should happen if an event occurs. Java Uses Event Delegation Model . Event Delegation Model Concept : A source generates an event and sends it to one or more listeners. The listener simply waits until it receives an event. Once an event is recieved, the listener processes the event and then returns. Advantages The advantages of this design is that the application logic that processes events is clearly separated from the UI logic that generates those events. Using the Delegation Event Model Steps 1. Implement the appropriate interface in the listener so that it can receive the type of event desired. 2. Implement code to register and unregister (if necessary) the listerner as a recipient for the event notifications.","title":"Event Handling"},{"location":"events/#event-handling","text":"","title":"Event Handling"},{"location":"events/#what-is-event","text":"Change in the state of an object is known as event. i.e. event describes the change i state of source. Events are generated as a result of user interaction with GUI components . But they can also be generated explicitly. For eg: Clicking on a button, moving the mouse, entering character through keyboard.","title":"What is Event ?"},{"location":"events/#what-is-event-listener","text":"A Listener is an object that is notified when an event occurs. a.k.a Event Handler . (also known as) Listener is responsible for generating response to an event. It has two major requirements: First , it must have been registered with one or more source to receive notifications about specific types of events. It must implement methods to receive and process these notifications.","title":"What is Event Listener ?"},{"location":"events/#what-is-event-source","text":"A source is an object that generates an event. This occurs when the internal state of the object chages in some way. Source may generate more than one tyoe of event. A source must register listeners in order for the listeners to recieve notifications about specific type of event. Each type of event has its own registration method. Here is the general form. public void addTypeListener (TypeListener el) // el = event listener For eg: addKeyListener() Here Type is the name of the event and el is the reference to the event listener. When an event occurs, all registered listeners are notified and recieve a copy of event object. This is known as multicasting the event . Some sources may allow only one listener to register. When such an event occurs, the registered listener is notified. This is known as unicasting the event . A source must also provide method that allows a listener to unregister an interest in a specific type of event. The general form: public void removeTypeListener(TypeListener el)","title":"What is Event Source ?"},{"location":"events/#what-is-event-handling","text":"It is the mechanism that controls the event and decides what should happen if an event occurs. Java Uses Event Delegation Model .","title":"What is Event Handling ?"},{"location":"events/#event-delegation-model","text":"Concept : A source generates an event and sends it to one or more listeners. The listener simply waits until it receives an event. Once an event is recieved, the listener processes the event and then returns. Advantages The advantages of this design is that the application logic that processes events is clearly separated from the UI logic that generates those events.","title":"Event Delegation Model"},{"location":"events/#using-the-delegation-event-model","text":"Steps 1. Implement the appropriate interface in the listener so that it can receive the type of event desired. 2. Implement code to register and unregister (if necessary) the listerner as a recipient for the event notifications.","title":"Using the Delegation Event Model"},{"location":"events/EVENTCLASSES/","text":"Event Classes Action Event Class An Action Event is generated when: a button is pressed. a list item is double clicked. menu item is clicked. Constructor ActionEvent(Object src, int type, String cmd) ActionEvent(Object src, int type, String cmd, int modifiers) ActionEvent(Object src, int type, String cmd, long when, int modifiers) Here, src = reference to the object that generated this event. type = Determine type of event cmd = command string modifier = indicates modifier keys ( ALT, CTRL, SHIFT ); values are ALT_MASK, CTRL_MASK, SHIFT_MASK when = specifies when the event occured You can obtain the command name for the envoking ActionEvent object by using: String getActionCommand() For eg: - When a button is pressed, an action event is generated that has a command name equal to the label on that button. - Other Methods : ```int getModifier()``` ```long getWhen()``` KeyEvent Class It is generated when: Keyboard input occurs Types of KeyEvent KEY_PRESSED - generated when key is pressed. KEY_RELEASED - generated when key is released. KEY_TYPED - generated when key is generated. Constants VK_ALT , VK_DOWN , VK_LEFT , VK_RIGHT , VK_ENTER , VK_ESCAPE , VK_CONTROL , VK_SHIFT , Methods char getKeyChar () ; int getKeyChar () ; Mouse Event There are eight types of mouse events: Eight integer constants are defined to determine types: MOUSE EVENT Generate MOUSE_CLICKED When user clicked the mouse MOUSE_DRESSED The user dragged the mouse MOUSE_ENTERED The mouse entered a component MOUSE_EXITED The mouse exited from a component MOUSE_MOVED The mouse moved MOUSE_PRESSED The mouse was pressed MOUSE_RELEASED The mouse was released MOUSE_WHEEL The mouse wheel was moved. Methods: int getX() int getY() Point getPoint() -> gives object that contain X, Y co-ordinates int getClickCount() boolean isPopupTrigger() -> tests if this events causes a pop-up menu to appear on this platform. int getButton() -> returns a values that represents the button that caused the event. Summary Event Class Description 1. Action Event Generated whe a button is pressed, a list item s double-clicked or menu item is selected. 2. Key Event Generated when input is received from the keyboard 3. Mouse Event Generated when the mouse is dragged, moved, clicked, pressed, or released, enter or exist component. 4. Adjustment Event Generated when a scroll bar is manipulated. 5. Component Event Generated when a component is hidden, move, resized or becomes visible. 6. Container Event Generated when a component is added to or remoevd from a component. 7. Focus Event Generated when a component is gains or loses keyboard focus. 8. Input Event Abstract superclass for all component input event classes. 9. Item Event Generated when a checkbox or list item is clicked: also occurs when a choice selection is made or a checkable menu item is selected or deselected. 10. MouseWheelEvent Generated when the mouse wheel is moved. 11. TextEvent Generated when the value of a text area or text field is changed. 11. WindowEvent Generated when a window is activated, closed, deactivated, opened or quitted.","title":"Event Classes"},{"location":"events/EVENTCLASSES/#event-classes","text":"","title":"Event Classes"},{"location":"events/EVENTCLASSES/#action-event-class","text":"An Action Event is generated when: a button is pressed. a list item is double clicked. menu item is clicked.","title":"Action Event Class"},{"location":"events/EVENTCLASSES/#constructor","text":"ActionEvent(Object src, int type, String cmd) ActionEvent(Object src, int type, String cmd, int modifiers) ActionEvent(Object src, int type, String cmd, long when, int modifiers) Here, src = reference to the object that generated this event. type = Determine type of event cmd = command string modifier = indicates modifier keys ( ALT, CTRL, SHIFT ); values are ALT_MASK, CTRL_MASK, SHIFT_MASK when = specifies when the event occured You can obtain the command name for the envoking ActionEvent object by using: String getActionCommand() For eg: - When a button is pressed, an action event is generated that has a command name equal to the label on that button. - Other Methods : ```int getModifier()``` ```long getWhen()```","title":"Constructor"},{"location":"events/EVENTCLASSES/#keyevent-class","text":"It is generated when: Keyboard input occurs","title":"KeyEvent Class"},{"location":"events/EVENTCLASSES/#types-of-keyevent","text":"KEY_PRESSED - generated when key is pressed. KEY_RELEASED - generated when key is released. KEY_TYPED - generated when key is generated.","title":"Types of KeyEvent"},{"location":"events/EVENTCLASSES/#constants","text":"VK_ALT , VK_DOWN , VK_LEFT , VK_RIGHT , VK_ENTER , VK_ESCAPE , VK_CONTROL , VK_SHIFT ,","title":"Constants"},{"location":"events/EVENTCLASSES/#methods","text":"char getKeyChar () ; int getKeyChar () ;","title":"Methods"},{"location":"events/EVENTCLASSES/#mouse-event","text":"There are eight types of mouse events: Eight integer constants are defined to determine types: MOUSE EVENT Generate MOUSE_CLICKED When user clicked the mouse MOUSE_DRESSED The user dragged the mouse MOUSE_ENTERED The mouse entered a component MOUSE_EXITED The mouse exited from a component MOUSE_MOVED The mouse moved MOUSE_PRESSED The mouse was pressed MOUSE_RELEASED The mouse was released MOUSE_WHEEL The mouse wheel was moved.","title":"Mouse Event"},{"location":"events/EVENTCLASSES/#methods_1","text":"int getX() int getY() Point getPoint() -> gives object that contain X, Y co-ordinates int getClickCount() boolean isPopupTrigger() -> tests if this events causes a pop-up menu to appear on this platform. int getButton() -> returns a values that represents the button that caused the event.","title":"Methods:"},{"location":"events/EVENTCLASSES/#summary","text":"Event Class Description 1. Action Event Generated whe a button is pressed, a list item s double-clicked or menu item is selected. 2. Key Event Generated when input is received from the keyboard 3. Mouse Event Generated when the mouse is dragged, moved, clicked, pressed, or released, enter or exist component. 4. Adjustment Event Generated when a scroll bar is manipulated. 5. Component Event Generated when a component is hidden, move, resized or becomes visible. 6. Container Event Generated when a component is added to or remoevd from a component. 7. Focus Event Generated when a component is gains or loses keyboard focus. 8. Input Event Abstract superclass for all component input event classes. 9. Item Event Generated when a checkbox or list item is clicked: also occurs when a choice selection is made or a checkable menu item is selected or deselected. 10. MouseWheelEvent Generated when the mouse wheel is moved. 11. TextEvent Generated when the value of a text area or text field is changed. 11. WindowEvent Generated when a window is activated, closed, deactivated, opened or quitted.","title":"Summary"},{"location":"events/EVENTLISTENERS/","text":"Sources of Events Button , CheckBox , Choice , List , Menu Item , Scrollbar , TextField , TextArea , Window User -> Event source -> Generates Event Objects -> Pass to EventListener(Handler) -> Handle and Return back to Source","title":"Sources of Events"},{"location":"events/EVENTLISTENERS/#sources-of-events","text":"Button , CheckBox , Choice , List , Menu Item , Scrollbar , TextField , TextArea , Window User -> Event source -> Generates Event Objects -> Pass to EventListener(Handler) -> Handle and Return back to Source","title":"Sources of Events"},{"location":"events/ActionListener/","text":"ActionListener Defines one method to receive actions events. Methods void actionPerformed(ActionEvet ae)","title":"**ActionListener**"},{"location":"events/ActionListener/#actionlistener","text":"Defines one method to receive actions events. Methods void actionPerformed(ActionEvet ae)","title":"ActionListener"},{"location":"events/Adapter/","text":"Adapter Class Java compiles a special feature, called an adapter class, that can simplify he creation of event handlers in certain situations. An adapter class prvovides an empty implementation of all methods in an EventListener interface. It is useful when you want to receive and process only some of the events that are handled by a particular event listener interface . Commonly used Listener Interface implemented by Adapter Class : Adapter Class Listener Interface ComponentAdapter ComponentListener ContainerAdapter ContainerListener FocusAdapter FocusListener KeyAdapter KeyListener MouseMotionAdapter MouseMotionListener, MouseListener & MouseWheelListener WindowAdapter WindowListener, WindowFocusListener & WindowStateListener","title":"Adapter Class"},{"location":"events/Adapter/#adapter-class","text":"Java compiles a special feature, called an adapter class, that can simplify he creation of event handlers in certain situations. An adapter class prvovides an empty implementation of all methods in an EventListener interface. It is useful when you want to receive and process only some of the events that are handled by a particular event listener interface . Commonly used Listener Interface implemented by Adapter Class : Adapter Class Listener Interface ComponentAdapter ComponentListener ContainerAdapter ContainerListener FocusAdapter FocusListener KeyAdapter KeyListener MouseMotionAdapter MouseMotionListener, MouseListener & MouseWheelListener WindowAdapter WindowListener, WindowFocusListener & WindowStateListener","title":"Adapter Class"},{"location":"events/AdjustmentListener/","text":"AdjustmentListener Defines one methods to receive adjustment events. Methods 1. void adjustmentValueChanged(AdjustmentEvent ae)","title":"**AdjustmentListener**"},{"location":"events/AdjustmentListener/#adjustmentlistener","text":"Defines one methods to receive adjustment events. Methods 1. void adjustmentValueChanged(AdjustmentEvent ae)","title":"AdjustmentListener"},{"location":"events/ComponentListener/","text":"ComponentListener Defines 4 methods to recognize when a component is hidden , moved , resized or shown. Methods 1. void componentResized(ComponentEvent ce) 2. void componentMoved(ComponentEvent ce) 3. void componentShown(ComponentEvent ce) 4. void componentHidden(ComponentEvent ce)","title":"**ComponentListener**"},{"location":"events/ComponentListener/#componentlistener","text":"Defines 4 methods to recognize when a component is hidden , moved , resized or shown. Methods 1. void componentResized(ComponentEvent ce) 2. void componentMoved(ComponentEvent ce) 3. void componentShown(ComponentEvent ce) 4. void componentHidden(ComponentEvent ce)","title":"ComponentListener"},{"location":"events/ContainerListener/","text":"ContainerListener Defines 2 methods to recognize when a componenet is added to or removed from a container. Methods 1. void containerAdded(ContainerEvent ce) 2. void containerRemoved(ContainerEvent ce)","title":"ContainerListener"},{"location":"events/ContainerListener/#containerlistener","text":"Defines 2 methods to recognize when a componenet is added to or removed from a container. Methods 1. void containerAdded(ContainerEvent ce) 2. void containerRemoved(ContainerEvent ce)","title":"ContainerListener"},{"location":"events/FocusListener/","text":"FocusListener Defines 2 methods to recognize a component gain or loses keyboard focuses Methods 1. void focusGained(FocusEvent fe) 2. void focusLost(FocusEvent fe)","title":"FocusListener"},{"location":"events/FocusListener/#focuslistener","text":"Defines 2 methods to recognize a component gain or loses keyboard focuses Methods 1. void focusGained(FocusEvent fe) 2. void focusLost(FocusEvent fe)","title":"FocusListener"},{"location":"events/ItemListener/","text":"ItemListener: Defines 1 method to recognize when the state of an item changes Methods 1. void itemStateChange(ItemEvent ie)","title":"ItemListener:"},{"location":"events/ItemListener/#itemlistener","text":"Defines 1 method to recognize when the state of an item changes Methods 1. void itemStateChange(ItemEvent ie)","title":"ItemListener:"},{"location":"events/KeyListener/","text":"KeyListener Interface Define 3 methods to recognize when a key is pressed, released or typed. Methods 1. void keyPressed(KeyEvent ke) 2. void keyReleased(KeyEvent ke) 3. void keyTyped(KeyEvent ke)","title":"Index"},{"location":"events/KeyListener/#keylistener-interface","text":"Define 3 methods to recognize when a key is pressed, released or typed. Methods 1. void keyPressed(KeyEvent ke) 2. void keyReleased(KeyEvent ke) 3. void keyTyped(KeyEvent ke)","title":"KeyListener Interface"},{"location":"events/MouseListener/","text":"MouseListener Defines 5 methods to recognize when the mouse is clicked, enters a component, exits component, is pressed, is released. Methods 1. void mouseClicked(MouseEvent me) 2. void mouseEntered(MouseEvent me) 3. void mouseExited(MouseEvent me) 4. void mousePressed(MouseEvent me) 5. void mouseReleased(MouseEvent me)","title":"Index"},{"location":"events/MouseListener/#mouselistener","text":"Defines 5 methods to recognize when the mouse is clicked, enters a component, exits component, is pressed, is released. Methods 1. void mouseClicked(MouseEvent me) 2. void mouseEntered(MouseEvent me) 3. void mouseExited(MouseEvent me) 4. void mousePressed(MouseEvent me) 5. void mouseReleased(MouseEvent me)","title":"MouseListener"},{"location":"events/MouseMotionListener/","text":"MouseMotionListener Defines 2 methods to recognize when mouse is dragged or moved. Methods 1. void mouseDraged(MouseEvent me) 2. void mouseMoved(MouseEvent me)","title":"MouseMotionListener"},{"location":"events/MouseMotionListener/#mousemotionlistener","text":"Defines 2 methods to recognize when mouse is dragged or moved. Methods 1. void mouseDraged(MouseEvent me) 2. void mouseMoved(MouseEvent me)","title":"MouseMotionListener"},{"location":"events/MouseWheelListener/","text":"MouseWheelListener -Defines 1 method to recognize when the mouse wheel is moved. Methods 1. void mouseWheelMoved(MouseWheelEvent mwe)","title":"MouseWheelListener"},{"location":"events/MouseWheelListener/#mousewheellistener","text":"-Defines 1 method to recognize when the mouse wheel is moved. Methods 1. void mouseWheelMoved(MouseWheelEvent mwe)","title":"MouseWheelListener"},{"location":"events/TextListener/","text":"TextListener Defines 1 method to recognize when a text value changes. Methods 1. void textValueChanged(TextEvent te)","title":"TextListener"},{"location":"events/TextListener/#textlistener","text":"Defines 1 method to recognize when a text value changes. Methods 1. void textValueChanged(TextEvent te)","title":"TextListener"},{"location":"events/WindowFocusListener/","text":"WindowFocusListener Defines 2 methods to recognize when a window gains ore loses input focus Methods 1. void windowGainedFocus(WindowEvent we) 2. void windowLostFocus(WindowEvent we)","title":"WindowFocusListener"},{"location":"events/WindowFocusListener/#windowfocuslistener","text":"Defines 2 methods to recognize when a window gains ore loses input focus Methods 1. void windowGainedFocus(WindowEvent we) 2. void windowLostFocus(WindowEvent we)","title":"WindowFocusListener"},{"location":"events/WindowListener/","text":"WindowListener Defines 7 methods to recognize when a window is activated, closed, deactivated,iconified, deiconified, opened or quit. Methods 1. void windowActivated(WindowEvent we) 2. void windowClosed(WindowEvent we) 3. void windowClosing(WindowEvent we) 4. void windowDeactivated(WindowEvent we) 5. void windowIconified(WindowEvent we) 6. void windowDeiconified(WindowEvent we) 7. void windowOpened(WindowEvent we)","title":"WindowListener"},{"location":"events/WindowListener/#windowlistener","text":"Defines 7 methods to recognize when a window is activated, closed, deactivated,iconified, deiconified, opened or quit. Methods 1. void windowActivated(WindowEvent we) 2. void windowClosed(WindowEvent we) 3. void windowClosing(WindowEvent we) 4. void windowDeactivated(WindowEvent we) 5. void windowIconified(WindowEvent we) 6. void windowDeiconified(WindowEvent we) 7. void windowOpened(WindowEvent we)","title":"WindowListener"},{"location":"exams/examAnswers/DBAbstractClassAndInterface/","text":"Difference between Abstract Class and Interface Abstract Class Interface An abstract class is a class that is declared abstract \u2014it may or may not include abstract methods. Abstract classes cannot be instantiated, but they can be subclassed. However, if it does not, then the subclass must also be declared abstract . A Java interface is a bit like a class, except a Java interface can only contain method signatures and fields. An Java interface cannot contain an implementation of the methods, only the signature (name, parameters and exceptions) of the method. You can use interfaces in Java as a way to achieve polymorphism. If we are talking about implementation, but not completely; we use abstract class. If we don't know about the implementation, just have requirements, go with interface. We can take abstract and concrete class. Method is public and abstract. Interface is 100% abstract class. No restrictions on abstract class access modifiers. We can't declare private and protected. Variables present inside abstract class needn't to be public, static and final. Every interface variable is public, final and static whether we are declaring it or not. No restrictions for initialization of variables. Initialization of variable is mandatory during declaration; else compile-time error. No restrictions on declaring static blocks (functions). We can declare instances too. Can't declare instance and static blocks; else compile-time error. It can take instance variable. if we want we can have constructors too. No constructor which sole purpose is to initialize the variable.","title":"Difference between Abstract Class and Interface"},{"location":"exams/examAnswers/DBAbstractClassAndInterface/#difference-between-abstract-class-and-interface","text":"Abstract Class Interface An abstract class is a class that is declared abstract \u2014it may or may not include abstract methods. Abstract classes cannot be instantiated, but they can be subclassed. However, if it does not, then the subclass must also be declared abstract . A Java interface is a bit like a class, except a Java interface can only contain method signatures and fields. An Java interface cannot contain an implementation of the methods, only the signature (name, parameters and exceptions) of the method. You can use interfaces in Java as a way to achieve polymorphism. If we are talking about implementation, but not completely; we use abstract class. If we don't know about the implementation, just have requirements, go with interface. We can take abstract and concrete class. Method is public and abstract. Interface is 100% abstract class. No restrictions on abstract class access modifiers. We can't declare private and protected. Variables present inside abstract class needn't to be public, static and final. Every interface variable is public, final and static whether we are declaring it or not. No restrictions for initialization of variables. Initialization of variable is mandatory during declaration; else compile-time error. No restrictions on declaring static blocks (functions). We can declare instances too. Can't declare instance and static blocks; else compile-time error. It can take instance variable. if we want we can have constructors too. No constructor which sole purpose is to initialize the variable.","title":"Difference between Abstract Class and Interface"},{"location":"exams/examQuestions/","text":"\u2705 in questions denotes the no of question appearence. More the tick in question, possess high importance from examination point of view. Chapter 1 Define Java. Write about the historical background of JPL. \u2705 \u2705 \u2705 Why and where we use Java Programming Language? \u2705 What are the benefits of using Java? How Java is more secure than other programming languages? Explain. \u201cJava is Interpreted, High Performance, Dynamic, Secure, Robust\u201d. Explain the statement. Explain Java Platform with their inter co-related technologies. Draw a sample block diagram to show compile time environment in Java programming. List down the different features of Java. \u2705 \u2705 Explain how Java supports multiple platforms, platform independency. \u2705 \u2705 \u2705 How do you differentiate JDK and JRE? What is the significance of having multiple data types in programming language? What do you mean by Java System Overview? Explain why Java program are known as portable and architecture neutral. What is the motive behind JVM? Explain what you mean by JRE. Is JVM is machine dependent? Explain the use of JVM. How JVM makes machine dependent. What do you mean by architectural \u2013 neutral? What are wrapper classes? What are the uses of Java Virtual Machine in JPL? \u2705 \u2705 \u2705Explain the two types of class loader in JPL. Explain why Java programs are compiled with bytecodes? \u2705 \u2705 What is a class file? Differentiate between assignment and initialization with suitable example. Explain all facilities the Java Programming has over C++. Why it is more popular than C++? \u2705 \u2705 \u2705 - Portability, platform independence (JVM), Java runs on any platform without recompiling. Write a program to sort any five names in alphabetical order. Write a program to print \u201cHello Nepal\u201d in console. \u2705 Write a program to show usage of various data types in Java. Write a function that takes an array of integers as an argument and returns sum of even numbers in that array. Write a program to generate the following triangle using for loop. 1 0 1 1 0 1 0 1 0 1 Chapter 2 How do you implement the concept of OOP in Java? Explain with an example. How the concept of reusability can be useful in OOP? Explain with example, in terms of JPL. \u2705\u2705 How does Java support reusability? Provide examples. What is a class? \u2705 How does it accomplish data hiding? Explain with suitable example. What advantages do we have when inheriting from a class whose attributes are protected rather than private? How are class declared in Java? Illustrate with example. Show the differences between user defined classes and system defined class. \u2705 Explain how we can re-use the user defined classes. What is constructor, Explain with example? State the difference between inner and outer class with the help of suitable example. \u2705 In what scenario inner use of inner class is preferred? Explain the static and non-static inner classes with example. Mention the scope of all modifiers (private, default, protected and public). Write suitable program to illustrate the concept. Write a simple program to show the difference in using and not using static keyword in defining methods. Explain the key words \u201cpublic, static, void, private, protected\u201d with reference to JPL. \u2705 Discuss about the concept of instance variable hiding in Java. Illustrate with a code example. Can you override private or static method in Java? Explain with an example. How inner class helps programmer? Write a short program snippet to show anonymous inner classes. Difference between class method and instance method with suitable example. Explain the difference between method overloading and method overriding? \u2705 \u2705\u2705 \u2705 \u2705 Write a program to show method overriding. Define polymorphism. How should we implement polymorphism in Java? Explain with example. Write a java class to demonstrate method overloading. Define a sum( ) method which takes two parameters and displays the sum. The sum( ) method should be overloaded to accept a combination of integer and double type number. \u2705 Explain the uses of super and this keyword with suitable examples. Define inheritance.\u2705 \u2705 \u2705 \u2705 \u2705 Explain different types of inheritance. \u2705 How does inheritance reduce the program development time? Explain with example. Explain the strategy for designing Inheritance. \u2705 Describe how we can prevent inheritance. Explain one method and multiple implementation approach of inheritance with example. Write a program deriving two child classes from a base class using Java. What is the use of abstract keyword? Explain with a suitable program. How is abstract class different from interfaces? \u2705 \u2705 \u2705 \u2705 What is the use of abstract classes in programming? What is difference between Interface and a class? Explain with an example. What is an interface? \u2705 \u2705 \u2705 \u2705 \u2705 \u2705 Explain with a suitable example. \u2705 \u2705 What are the significant uses of interface? Explain how it is implemented in Java. \u2705 How do you design and use interface? \u2705 \u2705 How Java supports Multiple Inheritance? Write a program in Java that shows the concept of Multiple Inheritance. \u2705 Why is multiple inheritance not supported in Java. Provide a simple code example to support your answer. What is runtime polymorphism? Explain how it can be achieved in Java. What is the difference between static method and non-static method? Can a non-static method be invoked from a static method? Explain with example? Write a program which has two classes A and B, where A should act as Parent class and B should inherit from A. Create a class Employee with id, name, post and salary . Create parameterized constructor to initialize the instance variables. Override the toString( ) method to display the employee details. Create a class Parts with instance variable sno, name, model, price , constructors to initialize the object, a method to calculate commission which calculates 10% of the price of each item and a method to display the details. Derive a new class PartsVAT with a method to calculate 13% VAT of the item. Write necessary constructors to that use the super constructors. Test the classes using a main method in third classes. Write an interface Exam with a method pass (int pass) that returns a Boolean. Write another interface Classify with a method division (int average) which returns a string. Write class Result which implements both Exams and Classify. The pass method should return true if score is greater than 50 otherwise false. The division method must return \u201cFirst\u201d when average is more than 80, \u201cSecond when average is more than 50 otherwise \u201dNo Divison\u201d. Write a Java program to demonstrate runtime polymorphism via method overriding. Write the following classes: Animal as a base class, Cat (derived class of Animal) and Cow (derived class of Animal). Write a method eat( ) in Animal class and override that method in the derived classes. Implement an abstract class named Person and two subclasses named Student and Employee in Java. A person has a name, address, phone number and e-mail address . A student has a class status (freshman, sophomore, junior or senior) . Define the status as a constant. An employee has an office, salary and date-hired . Implement the above classes in Java. Provide Constructors for classes to initialize private variables. Override the toString( ) methods in each class to display class name and the person\u2019s name. Write an application to create objects of type Student and Employee and print the person\u2019s name and the class name of the objects. Implement an abstract class named Book and two other subclasses named Novel and Magazine. A Book has a name, author, total page and publisher . Book has an abstract method called getBookType( ) . Novel and Magazine have field to determine their type. Implement the above classes in Java. Provide constructors for classes to private variables. Make a class Human with a name and age . Make a class Employee inherit from Human . Add instance variable salary of double. Supply a method showData( ) that prints the Employee\u2019s name, age , and salary . Make a class Manager inherit from Employee. Supply appropriate showData( ) methods for all classes. Provide a test program that tests these classes and methods. Define packages. \u2705 \u2705 Explain the significance of using package in Java. Differentiate interface with abstract classes. Write a package of three classes where each class must have at least one function. Also, state the steps to execute the package. \u2705 \u2705Add illustration. How packages are created and used in Java? Explain with example. \u2705 What is user defined package? Illustrate the process of defining and using define package with suitable example. Difference between package and interface in Java. Provide examples for each of them. Create a class MyClass in a package MyPack . Import newly created class MyClass form IpmClass . Chapter 3 What are exceptions? \u2705 \u2705 \u2705 What do you understand by exceptional handling? Describe about try-catch-finally construct with an example. \u2705 \u2705 \u2705 \u2705 \u2705 What\u2019s the use of try and catch block in Java? Write down all the exceptions that occur when we are dealing with array. Define Exceptional Handling with the help of a suitable program. \u2705 \u2705 Explain the different types of Exceptional Class. \u2705 What is usage of exception handling? Define with example. What is exception handling? Is an error similar to exception? \u2705 \u2705 Explain how an exception is handled?\u2705 What are the major exception classes used in Java? \u2705 How does an exception occur in Java? Explain the user defined Exceptions with suitable Java code. Differentiate between checked and unchecked exceptions with relevant examples. How you can create your own exceptions in Java? Explain with Program. Write a program to input an integer from keyboard and print it on the console. Fire an exception if the input is other than integer using try and catch blocks. Write a program to create your own Arithmetic Exception. Chapter 4 Write a program in Java to read a line of string in console mode and display same line as output. \u2705 \u2705 \u2705 \u2705 Write a Java program to access an existing file in to your current directory. Write a program which stores and appends any String value given from keyword into the C:\\store.txt . Write a program to read a text file and display the content on screen. Write a program to read two integer numbers from the console using the Input Stream. Calculate their sum display in console. Write a program to store objects of a class Student into a file \u201cstudent.dat\u201d also reads the objects from same file and display the file state of objects on the screen. Handle possible exceptions. Explain various stream classes available in Java. Write a program using any stream class for writing text to a file. Write a program to read content from file \u201c abc.txt \u201d and store it in \u201c xyz.txt \u201d. Write a program to write \u201c Hello World \u201d in a file abc.txt . Short Notes History of Java Benefits of Java Java Virtual Machine (JVM) \u2705 & Byte Code Data Types, Variables and class \u2705 \u2705 Assignment vs. Initialization Arrays i. Single Dimensional ii. Multi-Dimensional Type casting \u2705 Inner Class \u2705 \u2705 \u2705 \u2705 \u2705 \u2705 Final Keyword Access mechanism in Java \u2705 \u2705 \u2705 Static members \u2705 Static member variable \u2705 Abstract Methods and Classes Runtime Polymorphism in Java Wrapper Classes Inheritance Packages Dynamic Dispatching Casting Abstract Classes","title":"General"},{"location":"exams/examQuestions/#chapter-1","text":"Define Java. Write about the historical background of JPL. \u2705 \u2705 \u2705 Why and where we use Java Programming Language? \u2705 What are the benefits of using Java? How Java is more secure than other programming languages? Explain. \u201cJava is Interpreted, High Performance, Dynamic, Secure, Robust\u201d. Explain the statement. Explain Java Platform with their inter co-related technologies. Draw a sample block diagram to show compile time environment in Java programming. List down the different features of Java. \u2705 \u2705 Explain how Java supports multiple platforms, platform independency. \u2705 \u2705 \u2705 How do you differentiate JDK and JRE? What is the significance of having multiple data types in programming language? What do you mean by Java System Overview? Explain why Java program are known as portable and architecture neutral. What is the motive behind JVM? Explain what you mean by JRE. Is JVM is machine dependent? Explain the use of JVM. How JVM makes machine dependent. What do you mean by architectural \u2013 neutral? What are wrapper classes? What are the uses of Java Virtual Machine in JPL? \u2705 \u2705 \u2705Explain the two types of class loader in JPL. Explain why Java programs are compiled with bytecodes? \u2705 \u2705 What is a class file? Differentiate between assignment and initialization with suitable example. Explain all facilities the Java Programming has over C++. Why it is more popular than C++? \u2705 \u2705 \u2705 - Portability, platform independence (JVM), Java runs on any platform without recompiling. Write a program to sort any five names in alphabetical order. Write a program to print \u201cHello Nepal\u201d in console. \u2705 Write a program to show usage of various data types in Java. Write a function that takes an array of integers as an argument and returns sum of even numbers in that array. Write a program to generate the following triangle using for loop. 1 0 1 1 0 1 0 1 0 1","title":"Chapter 1"},{"location":"exams/examQuestions/#chapter-2","text":"How do you implement the concept of OOP in Java? Explain with an example. How the concept of reusability can be useful in OOP? Explain with example, in terms of JPL. \u2705\u2705 How does Java support reusability? Provide examples. What is a class? \u2705 How does it accomplish data hiding? Explain with suitable example. What advantages do we have when inheriting from a class whose attributes are protected rather than private? How are class declared in Java? Illustrate with example. Show the differences between user defined classes and system defined class. \u2705 Explain how we can re-use the user defined classes. What is constructor, Explain with example? State the difference between inner and outer class with the help of suitable example. \u2705 In what scenario inner use of inner class is preferred? Explain the static and non-static inner classes with example. Mention the scope of all modifiers (private, default, protected and public). Write suitable program to illustrate the concept. Write a simple program to show the difference in using and not using static keyword in defining methods. Explain the key words \u201cpublic, static, void, private, protected\u201d with reference to JPL. \u2705 Discuss about the concept of instance variable hiding in Java. Illustrate with a code example. Can you override private or static method in Java? Explain with an example. How inner class helps programmer? Write a short program snippet to show anonymous inner classes. Difference between class method and instance method with suitable example. Explain the difference between method overloading and method overriding? \u2705 \u2705\u2705 \u2705 \u2705 Write a program to show method overriding. Define polymorphism. How should we implement polymorphism in Java? Explain with example. Write a java class to demonstrate method overloading. Define a sum( ) method which takes two parameters and displays the sum. The sum( ) method should be overloaded to accept a combination of integer and double type number. \u2705 Explain the uses of super and this keyword with suitable examples. Define inheritance.\u2705 \u2705 \u2705 \u2705 \u2705 Explain different types of inheritance. \u2705 How does inheritance reduce the program development time? Explain with example. Explain the strategy for designing Inheritance. \u2705 Describe how we can prevent inheritance. Explain one method and multiple implementation approach of inheritance with example. Write a program deriving two child classes from a base class using Java. What is the use of abstract keyword? Explain with a suitable program. How is abstract class different from interfaces? \u2705 \u2705 \u2705 \u2705 What is the use of abstract classes in programming? What is difference between Interface and a class? Explain with an example. What is an interface? \u2705 \u2705 \u2705 \u2705 \u2705 \u2705 Explain with a suitable example. \u2705 \u2705 What are the significant uses of interface? Explain how it is implemented in Java. \u2705 How do you design and use interface? \u2705 \u2705 How Java supports Multiple Inheritance? Write a program in Java that shows the concept of Multiple Inheritance. \u2705 Why is multiple inheritance not supported in Java. Provide a simple code example to support your answer. What is runtime polymorphism? Explain how it can be achieved in Java. What is the difference between static method and non-static method? Can a non-static method be invoked from a static method? Explain with example? Write a program which has two classes A and B, where A should act as Parent class and B should inherit from A. Create a class Employee with id, name, post and salary . Create parameterized constructor to initialize the instance variables. Override the toString( ) method to display the employee details. Create a class Parts with instance variable sno, name, model, price , constructors to initialize the object, a method to calculate commission which calculates 10% of the price of each item and a method to display the details. Derive a new class PartsVAT with a method to calculate 13% VAT of the item. Write necessary constructors to that use the super constructors. Test the classes using a main method in third classes. Write an interface Exam with a method pass (int pass) that returns a Boolean. Write another interface Classify with a method division (int average) which returns a string. Write class Result which implements both Exams and Classify. The pass method should return true if score is greater than 50 otherwise false. The division method must return \u201cFirst\u201d when average is more than 80, \u201cSecond when average is more than 50 otherwise \u201dNo Divison\u201d. Write a Java program to demonstrate runtime polymorphism via method overriding. Write the following classes: Animal as a base class, Cat (derived class of Animal) and Cow (derived class of Animal). Write a method eat( ) in Animal class and override that method in the derived classes. Implement an abstract class named Person and two subclasses named Student and Employee in Java. A person has a name, address, phone number and e-mail address . A student has a class status (freshman, sophomore, junior or senior) . Define the status as a constant. An employee has an office, salary and date-hired . Implement the above classes in Java. Provide Constructors for classes to initialize private variables. Override the toString( ) methods in each class to display class name and the person\u2019s name. Write an application to create objects of type Student and Employee and print the person\u2019s name and the class name of the objects. Implement an abstract class named Book and two other subclasses named Novel and Magazine. A Book has a name, author, total page and publisher . Book has an abstract method called getBookType( ) . Novel and Magazine have field to determine their type. Implement the above classes in Java. Provide constructors for classes to private variables. Make a class Human with a name and age . Make a class Employee inherit from Human . Add instance variable salary of double. Supply a method showData( ) that prints the Employee\u2019s name, age , and salary . Make a class Manager inherit from Employee. Supply appropriate showData( ) methods for all classes. Provide a test program that tests these classes and methods. Define packages. \u2705 \u2705 Explain the significance of using package in Java. Differentiate interface with abstract classes. Write a package of three classes where each class must have at least one function. Also, state the steps to execute the package. \u2705 \u2705Add illustration. How packages are created and used in Java? Explain with example. \u2705 What is user defined package? Illustrate the process of defining and using define package with suitable example. Difference between package and interface in Java. Provide examples for each of them. Create a class MyClass in a package MyPack . Import newly created class MyClass form IpmClass .","title":"Chapter 2"},{"location":"exams/examQuestions/#chapter-3","text":"What are exceptions? \u2705 \u2705 \u2705 What do you understand by exceptional handling? Describe about try-catch-finally construct with an example. \u2705 \u2705 \u2705 \u2705 \u2705 What\u2019s the use of try and catch block in Java? Write down all the exceptions that occur when we are dealing with array. Define Exceptional Handling with the help of a suitable program. \u2705 \u2705 Explain the different types of Exceptional Class. \u2705 What is usage of exception handling? Define with example. What is exception handling? Is an error similar to exception? \u2705 \u2705 Explain how an exception is handled?\u2705 What are the major exception classes used in Java? \u2705 How does an exception occur in Java? Explain the user defined Exceptions with suitable Java code. Differentiate between checked and unchecked exceptions with relevant examples. How you can create your own exceptions in Java? Explain with Program. Write a program to input an integer from keyboard and print it on the console. Fire an exception if the input is other than integer using try and catch blocks. Write a program to create your own Arithmetic Exception.","title":"Chapter 3"},{"location":"exams/examQuestions/#chapter-4","text":"Write a program in Java to read a line of string in console mode and display same line as output. \u2705 \u2705 \u2705 \u2705 Write a Java program to access an existing file in to your current directory. Write a program which stores and appends any String value given from keyword into the C:\\store.txt . Write a program to read a text file and display the content on screen. Write a program to read two integer numbers from the console using the Input Stream. Calculate their sum display in console. Write a program to store objects of a class Student into a file \u201cstudent.dat\u201d also reads the objects from same file and display the file state of objects on the screen. Handle possible exceptions. Explain various stream classes available in Java. Write a program using any stream class for writing text to a file. Write a program to read content from file \u201c abc.txt \u201d and store it in \u201c xyz.txt \u201d. Write a program to write \u201c Hello World \u201d in a file abc.txt .","title":"Chapter 4"},{"location":"exams/examQuestions/#short-notes","text":"History of Java Benefits of Java Java Virtual Machine (JVM) \u2705 & Byte Code Data Types, Variables and class \u2705 \u2705 Assignment vs. Initialization Arrays i. Single Dimensional ii. Multi-Dimensional Type casting \u2705 Inner Class \u2705 \u2705 \u2705 \u2705 \u2705 \u2705 Final Keyword Access mechanism in Java \u2705 \u2705 \u2705 Static members \u2705 Static member variable \u2705 Abstract Methods and Classes Runtime Polymorphism in Java Wrapper Classes Inheritance Packages Dynamic Dispatching Casting Abstract Classes","title":"Short Notes"},{"location":"exams/examQuestions/ProgrammingQuestions/","text":"\u2705 in questions denotes the no of question appearence. More the tick in question, possess high importance from examination point of view. Chapter 1 Write a program to sort any five names in alphabetical order. Write a program to print \u201cHello Nepal\u201d in console. \u2705 class Two { public static void main ( String [] args ) { System . out . println ( \"Hello Nepal\" ); } } Write a program to show usage of various data types in Java. Write a function that takes an array of integers as an argument and returns sum of even numbers in that array. class Four { public static void main ( String [] args ) { int [] array = { 1 , 2 , 3 , 4 , 5 }; int sum = sumArray ( array ); System . out . println ( \"Sum : \" + sum ); } public static int sumArray ( int [] array ){ int sum = 0 ; for ( int num : array ){ sum += num ; } return sum ; } } Write a program to generate the following triangle using for loop. 1 0 1 1 0 1 0 1 0 1 class Five { public static void main ( String [] args ){ for ( int i = 1 ; i <= 4 ; i ++ ){ // First we are running loop from 1 to 4. for ( int j = 0 ; j < i ; j ++ ){ // Then we are running loop from 0 until i. System . out . print (( j + i ) % 2 + \" \" ); // Sum of i and j modulus of 2 equals the alternate of 1 and 0. } System . out . println (); } } } // Practiced Algorithms // System.out.print((int)(temp+Math.pow(-1,j))+\" \"); // (int)(+Math.pow(-1,)) // System.out.print((j+1)%2+\" \"); Chapter 2 Write a program which has two classes A and B, where A should act as Parent class and B should inherit from A. class A { void display (){ System . out . println ( \"This is from class A\" ); } } class B extends A { void display (){ System . out . println ( \"This is from class B\" ); } } class Demo { public static void main ( String [] args ){ A aObject = new A (); B bObject = new B (); aObject . display (); bObject . display (); // bObject.super.display(); } } Create a class Employee with id, name, post and salary . Create parameterized constructor to initialize the instance variables. Override the toString( ) method to display the employee details. class Employee { private int id ; private String name ; private String post ; private double salary ; Employee ( int id , String name , String post , double salary ) { this . id = id ; this . name = name ; this . post = post ; this . salary = salary ; } // This overrides the toString() method. // Returns a string representation of the object. In general, the toString // method returns a string that \"textually represents\" this object. The result // should be a concise but informative representation that is easy for a person // to read. It is recommended that all subclasses override this method. public String toString () { return \"ID : \" + this . id + \"\\nName : \" + this . name + \"\\nPost : \" + this . post + \"\\nSalary : \" + this . salary ; } } class Two { public static void main ( String [] args ) { Employee employeeOne = new Employee ( 12 , \"Arjun\" , \"Manager\" , 12345.90 ); String employee = employeeOne . toString (); System . out . println ( employee ); } } // System.out.println(\"ID : \"+id); // System.out.println(\"Name : \"+name); // System.out.println(\"Post : \"+post); // System.out.println(\"Salary : \"+salary); Create a class Parts with instance variable sno, name, model, price , constructors to initialize the object, a method to calculate commission which calculates 10% of the price of each item and a method to display the details. Derive a new class PartsVAT with a method to calculate 13% VAT of the item. Write necessary constructors to that use the super constructors. Test the classes using a main method in third classes. class Parts { private int sno ; private String name ; private String model ; private double price ; Parts ( int sno , String name , String model , double price ) { this . sno = sno ; this . name = name ; this . model = model ; this . price = price ; } public int getSno () { return sno ; } public String getName () { return name ; } public double getPrice () { return price ; } public String getModel () { return model ; } public double tax () { return 0.1 * this . price ; } public void display () { System . out . println ( \"\\nS.N. : \" + this . getSno () + \"\\nName : \" + this . getName () + \"\\nModel : \" + this . getModel () + \"\\nPirce : \" + this . getPrice () + \"\\nTax : \" + this . tax ()); } } class PartsVAT extends Parts { PartsVAT ( int sno , String name , String model , double price ) { super ( sno , name , model , price ); } public double tax () { return 0.13 * getPrice (); } public void display () { System . out . println ( \"\\nS.N. : \" + this . getSno () + \"\\nName : \" + this . getName () + \"\\nModel : \" + this . getModel () + \"\\nPirce : \" + this . getPrice () + \"\\nTax : \" + this . tax ()); } } class Three { public static void main ( String [] args ){ PartsVAT obj = new PartsVAT ( 12 , \"Tesla\" , \"Y\" , 400000.00d ); obj . display (); Parts objOne = new Parts ( 11 , \"Audi\" , \"R8\" , 650000.00d ); objOne . display (); } } Write an interface Exam with a method pass (int pass) that returns a Boolean. Write another interface Classify with a method division (int average) which returns a string. Write class Result which implements both Exams and Classify. The pass method should return true if score is greater than 50 otherwise false. The division method must return \u201cFirst\u201d when average is more than 80, \u201cSecond when average is more than 50 otherwise \u201dNo Divison\u201d. interface Exam { public boolean pass ( int average ); } interface Classify { public String division ( int average ); } public class Result implements Exam , Classify { public boolean pass ( int average ) { // Interface implement garda method ko agadi jahile pani public rakhne natra \"attempting to assign weaker access privileges; was public\" error message aaucha. if ( average > 50 ) { return true ; } else { return false ; } } public String division ( int average ) { if ( average > 80 ) { return \"First Division\" ; } else if ( average > 50 ) { return \"Second Division\" ; } else { return \"No Division\" ; } } } class ResultDemo { public static void main ( String [] args ) { Result resultObj = new Result (); int average = 45 ; boolean pass = resultObj . pass ( average ); String div = resultObj . division ( average ); System . out . println ( \"Pass : \" + pass + \"\\nDivision : \" + div ); } } Write a Java program to demonstrate runtime polymorphism via method overriding. Write the following classes: Animal as a base class, Cat (derived class of Animal) and Cow (derived class of Animal). Write a method eat( ) in Animal class and override that method in the derived classes. abstract class Animal { // Define a abstract class. abstract void eat (); // Define a abstract method. } class Cat extends Animal { void eat (){ // Override it. System . out . println ( \"Cat is eating.\" ); } } class Cow extends Animal { void eat (){ // Override it. System . out . println ( \"Animal is eating.\" ); } } class Five { public static void main ( String [] args ){ Animal referrer = new Cat (); // Create referrer object of Parent abstract class. referrer . eat (); referrer = new Cow (); referrer . eat (); } } Implement an abstract class named Person and two subclasses named Student and Employee in Java. A person has a name, address, phone number and e-mail address . A student has a class status (freshman, sophomore, junior or senior) . Define the status as a constant. An employee has an office, salary and date-hired . Implement the above classes in Java. Provide Constructors for classes to initialize private variables. Override the toString( ) methods in each class to display class name and the person\u2019s name. Write an application to create objects of type Student and Employee and print the person\u2019s name and the class name of the objects. abstract class Person { String name , address , phoneNumber , email ; Person ( String name , String address , String phoneNumber , String email ) { this . name = name ; this . address = address ; this . phoneNumber = phoneNumber ; this . email = email ; } abstract public String toString (); } class Student extends Person { final String status ; // Provide status as (freshman, sophomore, junior or senior.) Student ( String name , String address , String phoneNumber , String email , String status ) { super ( name , address , phoneNumber , email ); this . status = status ; } @Override public String toString () { return \"Class Name: \" + this . getClass (). getName () + \"\\nName: \" + this . name ; } } class Employee extends Person { String office , salary , dateHired ; Employee ( String name , String address , String phoneNumber , String email , String office , String salary , String dateHired ) { super ( name , address , phoneNumber , email ); this . office = office ; this . salary = salary ; this . dateHired = dateHired ; } @Override public String toString () { return \"Class Name: \" + this . getClass (). getName () + \"\\nName: \" + this . name ; } } public class Six { public static void main ( String [] args ) { Student studentOne = new Student ( \"Arjun Adhikari\" , \"Pokhara\" , \"9800011111\" , \"mailarjunadhikari@gmail.com\" , \"Senior\" ); Employee employeeOne = new Employee ( \"Anil Adhikari\" , \"Pokhara\" , \"982211111\" , \"mailaniladhikari@gmail.com\" , \"Human Resources\" , \"234454.90\" , \"1 January 2019\" ); String display = studentOne . toString (); System . out . println ( display ); display = employeeOne . toString (); System . out . println ( display ); } } Implement an abstract class named Book and two other subclasses named Novel and Magazine. A Book has a name, author, total page and publisher . Book has an abstract method called getBookType( ) . Novel and Magazine have field to determine their type. Implement the above classes in Java. Provide constructors for classes to private variables. abstract class Book { private String name ; private String author ; private int totalPage ; private String publisher ; Book ( String name , String author , int totalPage , String publisher ) { this . name = name ; this . author = author ; this . totalPage = totalPage ; this . publisher = publisher ; } public String getName () { return name ; } public String getAuthor () { return author ; } public int getTotalPage () { return totalPage ; } public String getPublisher () { return publisher ; } abstract void getBookType (); // Abstract Method } class Novel extends Book { Novel ( String name , String author , int totalPage , String publisher ) { super ( name , author , totalPage , publisher ); } void getBookType () { System . out . println ( \"Book Type : \" + this . getClass ()); System . out . println ( \"Name : \" + getName ()); System . out . println ( \"Author : \" + getAuthor ()); System . out . println ( \"Total Page : \" + getTotalPage ()); System . out . println ( \"Publisher: \" + getPublisher ()); } } class Magazine extends Book { Magazine ( String name , String author , int totalPage , String publisher ) { super ( name , author , totalPage , publisher ); } void getBookType () { System . out . println ( \"Book Type : \" + this . getClass (). getName ()); // This returns the class type System . out . println ( \"Name : \" + getName ()); System . out . println ( \"Author : \" + getAuthor ()); System . out . println ( \"Total Page : \" + getTotalPage ()); System . out . println ( \"Publisher: \" + getPublisher ()); } } class Seven { public static void main ( String [] args ){ Magazine magazineOne = new Magazine ( \"TIME\" , \"Time Editorial\" , 61 , \"Time Publishers\" ); magazineOne . getBookType (); } } Make a class Human with a name and age . Make a class Employee inherit from Human . Add instance variable salary of double. Supply a method showData( ) that prints the Employee\u2019s name, age , and salary . Make a class Manager inherit from Employee. Supply appropriate showData( ) methods for all classes. Provide a test program that tests these classes and methods. class Human { private String name ; private int age ; Human ( String name , int age ) { this . name = name ; this . age = age ; } public void display () { System . out . println ( \"Name : \" + name ); System . out . println ( \"Age : \" + age ); } } class Employee extends Human { private double salary ; Employee ( String name , int age , double salary ){ super ( name , age ); this . salary = salary ; } public void display () { super . display (); System . out . println ( \"Salary : \" + salary ); } } class Manager extends Employee { Manager ( String name , int age , double salary ){ super ( name , age , salary ); } public void display () { super . display (); } } class Eight { public static void main ( String [] args ) { Human humanOne = new Human ( \"Arjun\" , 19 ); humanOne . display (); Employee employeeOne = new Employee ( \"Hari\" , 45 , 21312.90 ); employeeOne . display (); Manager managerOne = new Manager ( \"Hari Nath\" , 45 , 21312.90 ); managerOne . display (); } } Create a class MyClass in a package MyPack . Import newly created class MyClass form IpmClass . Chapter 3 Write a program to input an integer from keyboard and print it on the console. Fire an exception if the input is other than integer using try and catch. Write a program to create your own Arithmetic Exception. Chapter 4 Write a program in Java to read a line of string in console mode and display same line as output. \u2705 \u2705 \u2705 \u2705 Write a Java program to access an existing file in to your current directory. Write a program which stores and appends any String value given from keyword into the C:\\store.txt . Write a program to read a text file and display the content on screen. Write a program to read two integer numbers from the console using the Input Stream. Calculate their sum display in console. Write a program to store objects of a class Student into a file \u201cstudent.dat\u201d also reads the objects from same file and display the file state of objects on the screen. Handle possible exceptions. Write a program using any stream class for writing text to a file. Write a program to read content from file \u201c abc.txt \u201d and store it in \u201c xyz.txt \u201d. /* Write a program to read content from file abc.txt and store it in xyz.txt. */ import java.io.* ; class DataTransfer { public static void main ( String [] args ) { try { FileReader filereader = new FileReader ( \"abc.txt\" ); FileWriter filewriter = new FileWriter ( \"xyz.txt\" ); int i = filereader . read (); while ( i != - 1 ) { System . out . print (( char ) i ); filewriter . write ( i ); // Appends every time i = filereader . read (); } filereader . close (); filewriter . flush (); filewriter . close (); } catch ( IOException err ){ err . printStackTrace (); } } } Write a program to write \u201c Hello World \u201d in a file abc.txt .","title":"Programming"},{"location":"exams/examQuestions/ProgrammingQuestions/#chapter-1","text":"Write a program to sort any five names in alphabetical order. Write a program to print \u201cHello Nepal\u201d in console. \u2705 class Two { public static void main ( String [] args ) { System . out . println ( \"Hello Nepal\" ); } } Write a program to show usage of various data types in Java. Write a function that takes an array of integers as an argument and returns sum of even numbers in that array. class Four { public static void main ( String [] args ) { int [] array = { 1 , 2 , 3 , 4 , 5 }; int sum = sumArray ( array ); System . out . println ( \"Sum : \" + sum ); } public static int sumArray ( int [] array ){ int sum = 0 ; for ( int num : array ){ sum += num ; } return sum ; } } Write a program to generate the following triangle using for loop. 1 0 1 1 0 1 0 1 0 1 class Five { public static void main ( String [] args ){ for ( int i = 1 ; i <= 4 ; i ++ ){ // First we are running loop from 1 to 4. for ( int j = 0 ; j < i ; j ++ ){ // Then we are running loop from 0 until i. System . out . print (( j + i ) % 2 + \" \" ); // Sum of i and j modulus of 2 equals the alternate of 1 and 0. } System . out . println (); } } } // Practiced Algorithms // System.out.print((int)(temp+Math.pow(-1,j))+\" \"); // (int)(+Math.pow(-1,)) // System.out.print((j+1)%2+\" \");","title":"Chapter 1"},{"location":"exams/examQuestions/ProgrammingQuestions/#chapter-2","text":"Write a program which has two classes A and B, where A should act as Parent class and B should inherit from A. class A { void display (){ System . out . println ( \"This is from class A\" ); } } class B extends A { void display (){ System . out . println ( \"This is from class B\" ); } } class Demo { public static void main ( String [] args ){ A aObject = new A (); B bObject = new B (); aObject . display (); bObject . display (); // bObject.super.display(); } } Create a class Employee with id, name, post and salary . Create parameterized constructor to initialize the instance variables. Override the toString( ) method to display the employee details. class Employee { private int id ; private String name ; private String post ; private double salary ; Employee ( int id , String name , String post , double salary ) { this . id = id ; this . name = name ; this . post = post ; this . salary = salary ; } // This overrides the toString() method. // Returns a string representation of the object. In general, the toString // method returns a string that \"textually represents\" this object. The result // should be a concise but informative representation that is easy for a person // to read. It is recommended that all subclasses override this method. public String toString () { return \"ID : \" + this . id + \"\\nName : \" + this . name + \"\\nPost : \" + this . post + \"\\nSalary : \" + this . salary ; } } class Two { public static void main ( String [] args ) { Employee employeeOne = new Employee ( 12 , \"Arjun\" , \"Manager\" , 12345.90 ); String employee = employeeOne . toString (); System . out . println ( employee ); } } // System.out.println(\"ID : \"+id); // System.out.println(\"Name : \"+name); // System.out.println(\"Post : \"+post); // System.out.println(\"Salary : \"+salary); Create a class Parts with instance variable sno, name, model, price , constructors to initialize the object, a method to calculate commission which calculates 10% of the price of each item and a method to display the details. Derive a new class PartsVAT with a method to calculate 13% VAT of the item. Write necessary constructors to that use the super constructors. Test the classes using a main method in third classes. class Parts { private int sno ; private String name ; private String model ; private double price ; Parts ( int sno , String name , String model , double price ) { this . sno = sno ; this . name = name ; this . model = model ; this . price = price ; } public int getSno () { return sno ; } public String getName () { return name ; } public double getPrice () { return price ; } public String getModel () { return model ; } public double tax () { return 0.1 * this . price ; } public void display () { System . out . println ( \"\\nS.N. : \" + this . getSno () + \"\\nName : \" + this . getName () + \"\\nModel : \" + this . getModel () + \"\\nPirce : \" + this . getPrice () + \"\\nTax : \" + this . tax ()); } } class PartsVAT extends Parts { PartsVAT ( int sno , String name , String model , double price ) { super ( sno , name , model , price ); } public double tax () { return 0.13 * getPrice (); } public void display () { System . out . println ( \"\\nS.N. : \" + this . getSno () + \"\\nName : \" + this . getName () + \"\\nModel : \" + this . getModel () + \"\\nPirce : \" + this . getPrice () + \"\\nTax : \" + this . tax ()); } } class Three { public static void main ( String [] args ){ PartsVAT obj = new PartsVAT ( 12 , \"Tesla\" , \"Y\" , 400000.00d ); obj . display (); Parts objOne = new Parts ( 11 , \"Audi\" , \"R8\" , 650000.00d ); objOne . display (); } } Write an interface Exam with a method pass (int pass) that returns a Boolean. Write another interface Classify with a method division (int average) which returns a string. Write class Result which implements both Exams and Classify. The pass method should return true if score is greater than 50 otherwise false. The division method must return \u201cFirst\u201d when average is more than 80, \u201cSecond when average is more than 50 otherwise \u201dNo Divison\u201d. interface Exam { public boolean pass ( int average ); } interface Classify { public String division ( int average ); } public class Result implements Exam , Classify { public boolean pass ( int average ) { // Interface implement garda method ko agadi jahile pani public rakhne natra \"attempting to assign weaker access privileges; was public\" error message aaucha. if ( average > 50 ) { return true ; } else { return false ; } } public String division ( int average ) { if ( average > 80 ) { return \"First Division\" ; } else if ( average > 50 ) { return \"Second Division\" ; } else { return \"No Division\" ; } } } class ResultDemo { public static void main ( String [] args ) { Result resultObj = new Result (); int average = 45 ; boolean pass = resultObj . pass ( average ); String div = resultObj . division ( average ); System . out . println ( \"Pass : \" + pass + \"\\nDivision : \" + div ); } } Write a Java program to demonstrate runtime polymorphism via method overriding. Write the following classes: Animal as a base class, Cat (derived class of Animal) and Cow (derived class of Animal). Write a method eat( ) in Animal class and override that method in the derived classes. abstract class Animal { // Define a abstract class. abstract void eat (); // Define a abstract method. } class Cat extends Animal { void eat (){ // Override it. System . out . println ( \"Cat is eating.\" ); } } class Cow extends Animal { void eat (){ // Override it. System . out . println ( \"Animal is eating.\" ); } } class Five { public static void main ( String [] args ){ Animal referrer = new Cat (); // Create referrer object of Parent abstract class. referrer . eat (); referrer = new Cow (); referrer . eat (); } } Implement an abstract class named Person and two subclasses named Student and Employee in Java. A person has a name, address, phone number and e-mail address . A student has a class status (freshman, sophomore, junior or senior) . Define the status as a constant. An employee has an office, salary and date-hired . Implement the above classes in Java. Provide Constructors for classes to initialize private variables. Override the toString( ) methods in each class to display class name and the person\u2019s name. Write an application to create objects of type Student and Employee and print the person\u2019s name and the class name of the objects. abstract class Person { String name , address , phoneNumber , email ; Person ( String name , String address , String phoneNumber , String email ) { this . name = name ; this . address = address ; this . phoneNumber = phoneNumber ; this . email = email ; } abstract public String toString (); } class Student extends Person { final String status ; // Provide status as (freshman, sophomore, junior or senior.) Student ( String name , String address , String phoneNumber , String email , String status ) { super ( name , address , phoneNumber , email ); this . status = status ; } @Override public String toString () { return \"Class Name: \" + this . getClass (). getName () + \"\\nName: \" + this . name ; } } class Employee extends Person { String office , salary , dateHired ; Employee ( String name , String address , String phoneNumber , String email , String office , String salary , String dateHired ) { super ( name , address , phoneNumber , email ); this . office = office ; this . salary = salary ; this . dateHired = dateHired ; } @Override public String toString () { return \"Class Name: \" + this . getClass (). getName () + \"\\nName: \" + this . name ; } } public class Six { public static void main ( String [] args ) { Student studentOne = new Student ( \"Arjun Adhikari\" , \"Pokhara\" , \"9800011111\" , \"mailarjunadhikari@gmail.com\" , \"Senior\" ); Employee employeeOne = new Employee ( \"Anil Adhikari\" , \"Pokhara\" , \"982211111\" , \"mailaniladhikari@gmail.com\" , \"Human Resources\" , \"234454.90\" , \"1 January 2019\" ); String display = studentOne . toString (); System . out . println ( display ); display = employeeOne . toString (); System . out . println ( display ); } } Implement an abstract class named Book and two other subclasses named Novel and Magazine. A Book has a name, author, total page and publisher . Book has an abstract method called getBookType( ) . Novel and Magazine have field to determine their type. Implement the above classes in Java. Provide constructors for classes to private variables. abstract class Book { private String name ; private String author ; private int totalPage ; private String publisher ; Book ( String name , String author , int totalPage , String publisher ) { this . name = name ; this . author = author ; this . totalPage = totalPage ; this . publisher = publisher ; } public String getName () { return name ; } public String getAuthor () { return author ; } public int getTotalPage () { return totalPage ; } public String getPublisher () { return publisher ; } abstract void getBookType (); // Abstract Method } class Novel extends Book { Novel ( String name , String author , int totalPage , String publisher ) { super ( name , author , totalPage , publisher ); } void getBookType () { System . out . println ( \"Book Type : \" + this . getClass ()); System . out . println ( \"Name : \" + getName ()); System . out . println ( \"Author : \" + getAuthor ()); System . out . println ( \"Total Page : \" + getTotalPage ()); System . out . println ( \"Publisher: \" + getPublisher ()); } } class Magazine extends Book { Magazine ( String name , String author , int totalPage , String publisher ) { super ( name , author , totalPage , publisher ); } void getBookType () { System . out . println ( \"Book Type : \" + this . getClass (). getName ()); // This returns the class type System . out . println ( \"Name : \" + getName ()); System . out . println ( \"Author : \" + getAuthor ()); System . out . println ( \"Total Page : \" + getTotalPage ()); System . out . println ( \"Publisher: \" + getPublisher ()); } } class Seven { public static void main ( String [] args ){ Magazine magazineOne = new Magazine ( \"TIME\" , \"Time Editorial\" , 61 , \"Time Publishers\" ); magazineOne . getBookType (); } } Make a class Human with a name and age . Make a class Employee inherit from Human . Add instance variable salary of double. Supply a method showData( ) that prints the Employee\u2019s name, age , and salary . Make a class Manager inherit from Employee. Supply appropriate showData( ) methods for all classes. Provide a test program that tests these classes and methods. class Human { private String name ; private int age ; Human ( String name , int age ) { this . name = name ; this . age = age ; } public void display () { System . out . println ( \"Name : \" + name ); System . out . println ( \"Age : \" + age ); } } class Employee extends Human { private double salary ; Employee ( String name , int age , double salary ){ super ( name , age ); this . salary = salary ; } public void display () { super . display (); System . out . println ( \"Salary : \" + salary ); } } class Manager extends Employee { Manager ( String name , int age , double salary ){ super ( name , age , salary ); } public void display () { super . display (); } } class Eight { public static void main ( String [] args ) { Human humanOne = new Human ( \"Arjun\" , 19 ); humanOne . display (); Employee employeeOne = new Employee ( \"Hari\" , 45 , 21312.90 ); employeeOne . display (); Manager managerOne = new Manager ( \"Hari Nath\" , 45 , 21312.90 ); managerOne . display (); } } Create a class MyClass in a package MyPack . Import newly created class MyClass form IpmClass .","title":"Chapter 2"},{"location":"exams/examQuestions/ProgrammingQuestions/#chapter-3","text":"Write a program to input an integer from keyboard and print it on the console. Fire an exception if the input is other than integer using try and catch. Write a program to create your own Arithmetic Exception.","title":"Chapter 3"},{"location":"exams/examQuestions/ProgrammingQuestions/#chapter-4","text":"Write a program in Java to read a line of string in console mode and display same line as output. \u2705 \u2705 \u2705 \u2705 Write a Java program to access an existing file in to your current directory. Write a program which stores and appends any String value given from keyword into the C:\\store.txt . Write a program to read a text file and display the content on screen. Write a program to read two integer numbers from the console using the Input Stream. Calculate their sum display in console. Write a program to store objects of a class Student into a file \u201cstudent.dat\u201d also reads the objects from same file and display the file state of objects on the screen. Handle possible exceptions. Write a program using any stream class for writing text to a file. Write a program to read content from file \u201c abc.txt \u201d and store it in \u201c xyz.txt \u201d. /* Write a program to read content from file abc.txt and store it in xyz.txt. */ import java.io.* ; class DataTransfer { public static void main ( String [] args ) { try { FileReader filereader = new FileReader ( \"abc.txt\" ); FileWriter filewriter = new FileWriter ( \"xyz.txt\" ); int i = filereader . read (); while ( i != - 1 ) { System . out . print (( char ) i ); filewriter . write ( i ); // Appends every time i = filereader . read (); } filereader . close (); filewriter . flush (); filewriter . close (); } catch ( IOException err ){ err . printStackTrace (); } } } Write a program to write \u201c Hello World \u201d in a file abc.txt .","title":"Chapter 4"},{"location":"exception/","text":"Exception Handling Exception is an abnormal condition that arises in a code sequence at run time. When an exceptional condition arises, an object representing that exception is created and thrown in the method that caused the error. Exceptions can be generated by : Java run-time system Exceptions thrown by Java relate to fundamental errors that violate the rules of Java language or the constraints of Java execution environment. Can be manually generated by your code. Java exception handling is managed via five keywords: 1. try 2. throw 3. catch 4. throws 5. finally Exception is recoverable. Error is non-recoverable. Eg: lack of resources \u27a1 Our of memory. Under Runtime Exception 1. Arithmetic Exception 2. Null Pointer Exception Uncaught Exceptions: class Exception{ public static void main(String[] args){ int d = 0; int a = 42 / d; } } Array Out of Bound Exception Here, java runtime system detects the attemps to divide by zero, it constructs a new exception object and then throws this exception. This causes the execution of Exception class to stop because once an exception has been thrown , it must be caught by an exception handler and dealed with immediately. Here we haven't supplied any exception handlers of our own, so the exception is caught by the default handler provided by Java Runtime System.","title":"Exception Handling"},{"location":"exception/#exception-handling","text":"Exception is an abnormal condition that arises in a code sequence at run time. When an exceptional condition arises, an object representing that exception is created and thrown in the method that caused the error. Exceptions can be generated by : Java run-time system Exceptions thrown by Java relate to fundamental errors that violate the rules of Java language or the constraints of Java execution environment. Can be manually generated by your code. Java exception handling is managed via five keywords: 1. try 2. throw 3. catch 4. throws 5. finally Exception is recoverable. Error is non-recoverable. Eg: lack of resources \u27a1 Our of memory. Under Runtime Exception 1. Arithmetic Exception 2. Null Pointer Exception","title":"Exception Handling"},{"location":"exception/#uncaught-exceptions","text":"class Exception{ public static void main(String[] args){ int d = 0; int a = 42 / d; } }","title":"Uncaught Exceptions:"},{"location":"exception/#array-out-of-bound-exception","text":"Here, java runtime system detects the attemps to divide by zero, it constructs a new exception object and then throws this exception. This causes the execution of Exception class to stop because once an exception has been thrown , it must be caught by an exception handler and dealed with immediately. Here we haven't supplied any exception handlers of our own, so the exception is caught by the default handler provided by Java Runtime System.","title":"Array Out of Bound Exception"},{"location":"exception/ChainedException/","text":"Chained Exceptions allow to associate another exception with an exception. To allow chained Exceptions, two constructors and two methods are added to Throwable. Throwable (Throwable cause Exception) Throwable (String message, Throwable cause Exception) Two methods used are: Throwable getCause() Throwable initCause (Throwable causeException)","title":"Chained Exceptions"},{"location":"exception/ChainedException/#chained-exceptions","text":"allow to associate another exception with an exception. To allow chained Exceptions, two constructors and two methods are added to Throwable. Throwable (Throwable cause Exception) Throwable (String message, Throwable cause Exception) Two methods used are: Throwable getCause() Throwable initCause (Throwable causeException)","title":"Chained Exceptions"},{"location":"exception/NestedTry/","text":"Nested Try Statement The try statement can be nested i.e , a try can be inside the block of another try. Each time a try statement is entered, the contact of that exception is pushed in the track. If an inner try statement doesn't have a catch handler for particular exception, the stack is unwound and the next try statement catch handler are inspected for a match. This continues until one of the catch statement succeeds or until all of the nested try statments are exhausted. If no catch statements matches then the Java Runtime System will handle the exception.","title":"Nested Try Statement"},{"location":"exception/NestedTry/#nested-try-statement","text":"The try statement can be nested i.e , a try can be inside the block of another try. Each time a try statement is entered, the contact of that exception is pushed in the track. If an inner try statement doesn't have a catch handler for particular exception, the stack is unwound and the next try statement catch handler are inspected for a match. This continues until one of the catch statement succeeds or until all of the nested try statments are exhausted. If no catch statements matches then the Java Runtime System will handle the exception.","title":"Nested Try Statement"},{"location":"exception/builtIn/","text":"Java's Built-in Exceptions java.lang Most general of these exceptions are subclasses of the standard type RuntimeException. Checked Exception That must be included in a method's throw list if that method can generate one of these Exception and does not handle itself. eg: ClassNotFOundException, IllegalAccessException Unchecked Exception These exceptio need not be included in any method's throw list. Compiler doesn't check to see if a method handles or throw these exception. eg: ArithmeticException, ArrayIndexOutofBoundsException","title":"Index"},{"location":"exception/builtIn/#javas-built-in-exceptions","text":"java.lang Most general of these exceptions are subclasses of the standard type RuntimeException. Checked Exception That must be included in a method's throw list if that method can generate one of these Exception and does not handle itself. eg: ClassNotFOundException, IllegalAccessException Unchecked Exception These exceptio need not be included in any method's throw list. Compiler doesn't check to see if a method handles or throw these exception. eg: ArithmeticException, ArrayIndexOutofBoundsException","title":"Java's Built-in Exceptions"},{"location":"exception/finally/","text":"Finally When exceptions are thrown, execution in a method takes a rather abrupt, nonlinear path that alters the normal flow through the method. Depending upon how the method is coded, it is even possible for an exception to cause the method to return prematurely. This could be a problem in some methods. The finally keyword is designed to address this kind of problems. finally creates a block of code that will be executed after a try catch block has completed and before the code following the try catch block. The finally block will be executed whether or not an exception is thrown. If an exception is thrown the finally block will execute even if no catch statement matches the exception. This can be useful for closing file handles and freeing up any other resources. finally block is optional. Note Each try statments requires at least one catch or finally clause.","title":"Finally"},{"location":"exception/finally/#finally","text":"When exceptions are thrown, execution in a method takes a rather abrupt, nonlinear path that alters the normal flow through the method. Depending upon how the method is coded, it is even possible for an exception to cause the method to return prematurely. This could be a problem in some methods. The finally keyword is designed to address this kind of problems. finally creates a block of code that will be executed after a try catch block has completed and before the code following the try catch block. The finally block will be executed whether or not an exception is thrown. If an exception is thrown the finally block will execute even if no catch statement matches the exception. This can be useful for closing file handles and freeing up any other resources. finally block is optional. Note Each try statments requires at least one catch or finally clause.","title":"Finally"},{"location":"exception/throw/","text":"Throw So far, you have only been catching exceptions that are thrown by the Java run-time system. However, it is possible to throw an exception explicitly, using throw statement. General Form : throw throwableInstance; Here, ThrowableInstance must be an object of type Throwable or a subclass of Throwable. There are two ways you can obtain a Throwable Object. Using a parameter in catch clause Creating one with the new operator. The flow of execution stops immediately after the throw statement; any subsequent statements are not executed. The nearest enclosing try block is inspected to see if it has a catch statement that matches the type of exception. It if does find a match, control is transferred to that statement. If not, then the next enclosing try statement is inspected and so on. If no matching catch is found, then the default exception handler halts the program and prints the stack trace. // Error aauni wala","title":"Throw"},{"location":"exception/throw/#throw","text":"So far, you have only been catching exceptions that are thrown by the Java run-time system. However, it is possible to throw an exception explicitly, using throw statement.","title":"Throw"},{"location":"exception/throw/#general-form","text":"throw throwableInstance; Here, ThrowableInstance must be an object of type Throwable or a subclass of Throwable. There are two ways you can obtain a Throwable Object. Using a parameter in catch clause Creating one with the new operator. The flow of execution stops immediately after the throw statement; any subsequent statements are not executed. The nearest enclosing try block is inspected to see if it has a catch statement that matches the type of exception. It if does find a match, control is transferred to that statement. If not, then the next enclosing try statement is inspected and so on. If no matching catch is found, then the default exception handler halts the program and prints the stack trace. // Error aauni wala","title":"General Form :"},{"location":"exception/throws/","text":"Throws If a method is capable of causing an exception that it doesn't handle, it must specify this behaviour so that colors of the method can guard themself against that exception you do this by including a throws clause in the method declaration. A throw clause lists the type of exception that a method might throw. This is necessary for all exception, except those of type Error and or runtime Exception or any of their subclasses. All other exception that a method can throw must be declared in throw clause. If they are not, a compile time error will occur. General Form : type methodName (parameter list) throws exceptionList{ / Exception 1, Exception 2 ... etc. // code goes here }","title":"Throws"},{"location":"exception/throws/#throws","text":"If a method is capable of causing an exception that it doesn't handle, it must specify this behaviour so that colors of the method can guard themself against that exception you do this by including a throws clause in the method declaration. A throw clause lists the type of exception that a method might throw. This is necessary for all exception, except those of type Error and or runtime Exception or any of their subclasses. All other exception that a method can throw must be declared in throw clause. If they are not, a compile time error will occur.","title":"Throws"},{"location":"exception/throws/#general-form","text":"type methodName (parameter list) throws exceptionList{ / Exception 1, Exception 2 ... etc. // code goes here }","title":"General Form :"},{"location":"general/","text":"General Java Questions Write a program that accepts a number and checks if it equal to the sum of any two numbers in array divided by two. If it doesn't contains such numbers, it should print message to user \" No such numbers found in array \". Link to the answer : Click here","title":"General Java Questions"},{"location":"general/#general-java-questions","text":"Write a program that accepts a number and checks if it equal to the sum of any two numbers in array divided by two. If it doesn't contains such numbers, it should print message to user \" No such numbers found in array \". Link to the answer : Click here","title":"General Java Questions"},{"location":"graphics/","text":"Graphics Context and Graphics Object A graphics context enables drawing on the screen. A Graphics object manages a graphics context and draws pixels pn the screen that represent text and other graphical objects (lines, ellipses, rectangles and polygons.) Graphics object contain methods for drawing, font manipulation, color manipulation. Methods that takes Graphics object as an argument public void paint(Graphics g) The paint() method of the Component class takes a Graphics object as a argument. This object is passed to the paint method by the system when a paint() method by the system when a paint operation is required for a component. The paint() method defined in class Component does nothing by default, it must be overridden by the programmer. The paint() method is rarely called directly by the programmer. When an applet executes, the paint() method is automatically caused. Similarly, when any component is displayed, that component's paint method is called automatically. A. public void repaint() - If the progammer needs to call paint() , a call is made to the Component class repaint() method. - The paint method request a call to the Component 's update method. public void update() In AWT GUI Components, the update() clears the background of GUI components. public void paintComponent(Graphics g) Swing components the inherit from the class JComponent contain method paintComponent() that helps them to draw properly in the context of a swing GUI.","title":"Graphics Context and Graphics Object"},{"location":"graphics/#graphics-context-and-graphics-object","text":"A graphics context enables drawing on the screen. A Graphics object manages a graphics context and draws pixels pn the screen that represent text and other graphical objects (lines, ellipses, rectangles and polygons.) Graphics object contain methods for drawing, font manipulation, color manipulation.","title":"Graphics Context and Graphics Object"},{"location":"graphics/#methods-that-takes-graphics-object-as-an-argument","text":"public void paint(Graphics g) The paint() method of the Component class takes a Graphics object as a argument. This object is passed to the paint method by the system when a paint() method by the system when a paint operation is required for a component. The paint() method defined in class Component does nothing by default, it must be overridden by the programmer. The paint() method is rarely called directly by the programmer. When an applet executes, the paint() method is automatically caused. Similarly, when any component is displayed, that component's paint method is called automatically. A. public void repaint() - If the progammer needs to call paint() , a call is made to the Component class repaint() method. - The paint method request a call to the Component 's update method. public void update() In AWT GUI Components, the update() clears the background of GUI components. public void paintComponent(Graphics g) Swing components the inherit from the class JComponent contain method paintComponent() that helps them to draw properly in the context of a swing GUI.","title":"Methods that takes Graphics object as an argument"},{"location":"graphics/color/","text":"Color Control Color constants and their RGB values Constant RGB Value public static final Color RED 255,0,0 public static final Color GREEN 0,255,0 public static final Color BLUE 0,0,255 public static final Color ORANGE 255,200,0 public static final Color PINK 255,75,175 public static final Color CYAN 0,255,255 public static final Color MAGNETA 255,0,255 public static final Color YELLOW 255,255,0 public static final Color BLACK 0,0,0 public static final Color WHITE 255,255,255 public static final Color GRAY 128,128,128 public static final Color LIGHT_GRAY 192,192,192 public static final Color DARK_GRAY 64,64,64","title":"Color Control"},{"location":"graphics/color/#color-control","text":"Color constants and their RGB values Constant RGB Value public static final Color RED 255,0,0 public static final Color GREEN 0,255,0 public static final Color BLUE 0,0,255 public static final Color ORANGE 255,200,0 public static final Color PINK 255,75,175 public static final Color CYAN 0,255,255 public static final Color MAGNETA 255,0,255 public static final Color YELLOW 255,255,0 public static final Color BLACK 0,0,0 public static final Color WHITE 255,255,255 public static final Color GRAY 128,128,128 public static final Color LIGHT_GRAY 192,192,192 public static final Color DARK_GRAY 64,64,64","title":"Color Control"},{"location":"graphics/control/","text":"Color Control Color constants and their RGB values Constant RGB Value public static final Color RED 255,0,0 public static final Color GREEN 0,255,0 public static final Color BLUE 0,0,255 public static final Color ORANGE 255,200,0 public static final Color PINK 255,75,175 public static final Color CYAN 0,255,255 public static final Color MAGNETA 255,0,255 public static final Color YELLOW 255,255,0 public static final Color BLACK 0,0,0 public static final Color WHITE 255,255,255 public static final Color GRAY 128,128,128 public static final Color LIGHT_GRAY 192,192,192 public static final Color DARK_GRAY 64,64,64 Constructors public Color(int r, int g, int b) based on RGB values 0-255 public color(float r, float g, float b) based on 0.0 to 1.0 Methods public int getRed() public int getGreen() public int getBlue() Graphics method for manipulating Colors public int getColor() returns object representing current color for the graphics context. public int setColor(Color c) Sets current color for drawing with the graphics context.","title":"Color Control"},{"location":"graphics/control/#color-control","text":"Color constants and their RGB values Constant RGB Value public static final Color RED 255,0,0 public static final Color GREEN 0,255,0 public static final Color BLUE 0,0,255 public static final Color ORANGE 255,200,0 public static final Color PINK 255,75,175 public static final Color CYAN 0,255,255 public static final Color MAGNETA 255,0,255 public static final Color YELLOW 255,255,0 public static final Color BLACK 0,0,0 public static final Color WHITE 255,255,255 public static final Color GRAY 128,128,128 public static final Color LIGHT_GRAY 192,192,192 public static final Color DARK_GRAY 64,64,64","title":"Color Control"},{"location":"graphics/control/#constructors","text":"public Color(int r, int g, int b) based on RGB values 0-255 public color(float r, float g, float b) based on 0.0 to 1.0","title":"Constructors"},{"location":"graphics/control/#methods","text":"public int getRed() public int getGreen() public int getBlue()","title":"Methods"},{"location":"graphics/control/#graphics-method-for-manipulating-colors","text":"public int getColor() returns object representing current color for the graphics context. public int setColor(Color c) Sets current color for drawing with the graphics context.","title":"Graphics method for manipulating Colors"},{"location":"graphics/font/","text":"Manipulating Fonts Constants public static final int PLAIN public static final int BOLD public static final int ITALIC Graphics methods for manipulating fonts public Font getText() public void setFont(Font f) Constructors public Font(String name, int style, int size) Methods public int getStyle() public int getSize() public String getName() public String getFamily() public boolean isPlain() public boolean isBold() public boolean isItalic()","title":"Manipulating Fonts"},{"location":"graphics/font/#manipulating-fonts","text":"","title":"Manipulating Fonts"},{"location":"graphics/font/#constants","text":"public static final int PLAIN public static final int BOLD public static final int ITALIC","title":"Constants"},{"location":"graphics/font/#graphics-methods-for-manipulating-fonts","text":"public Font getText() public void setFont(Font f)","title":"Graphics methods for manipulating fonts"},{"location":"graphics/font/#constructors","text":"public Font(String name, int style, int size)","title":"Constructors"},{"location":"graphics/font/#methods","text":"public int getStyle() public int getSize() public String getName() public String getFamily() public boolean isPlain() public boolean isBold() public boolean isItalic()","title":"Methods"},{"location":"graphics/font/fontMetrics/","text":"Font Metrics Important for Exam Methods public int getAscent() public int getDescent() public int getLeading() public int getHeight() Graphics Methods for getting a Font's Font Metrics public FontMetrics getFontMetrics() public FontMetrics getFontMetrics(Font f)","title":"Font Metrics"},{"location":"graphics/font/fontMetrics/#font-metrics","text":"Important for Exam","title":"Font Metrics"},{"location":"graphics/font/fontMetrics/#methods","text":"public int getAscent() public int getDescent() public int getLeading() public int getHeight()","title":"Methods"},{"location":"graphics/font/fontMetrics/#graphics-methods-for-getting-a-fonts-font-metrics","text":"public FontMetrics getFontMetrics() public FontMetrics getFontMetrics(Font f)","title":"Graphics Methods for getting a Font's Font Metrics"},{"location":"graphics/geometry/","text":"Geometrical Elements Line public void drawLine(int x1, int y1, int x2, int y2); Rectangle public void drawRect(int x, int y, int width, int height); public void fillRect(int x, int y, int width, int height); public void drawRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight); public void fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight); Oval public void drawOval(int x, int y, int width, int height); public void fillOval(int x, int y, int width, int height); Arc public void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle); public void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle); Negative angle means rotating clockwise, positive means anti-clockwise. Drawing Polygons and Polylines Polygons are closed multisided shapes composed of straight line segments. Polylines are sequences of connected points. Polygon Constructors public Polygon() public Polygon(int[] xValues, int[] yValues , int numberOfPoint) Methods public void addPoint(int x, int y) To add one point to the existing polygon, we use this method. In Polygon, if the last point is different from the first, the polygon is closed by a line that connects the last point to the first. public Polygon() In Polygon, if the last point is different from the first, the polyline is not closed. Graphics methods for drawing Polygons public void drawPolygon(int []xPoints, int []yPoints, int points); public void drawPolyLine(int []xPoints, int []yPoints, int points); public void drawPolygon(Polygon p); public void fillPolygon(Polygon p); public void fillPolygon(Polygon p);","title":"Geometrical Elements"},{"location":"graphics/geometry/#geometrical-elements","text":"","title":"Geometrical Elements"},{"location":"graphics/geometry/#line","text":"public void drawLine(int x1, int y1, int x2, int y2);","title":"Line"},{"location":"graphics/geometry/#rectangle","text":"public void drawRect(int x, int y, int width, int height); public void fillRect(int x, int y, int width, int height); public void drawRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight); public void fillRoundRect(int x, int y, int width, int height, int arcWidth, int arcHeight);","title":"Rectangle"},{"location":"graphics/geometry/#oval","text":"public void drawOval(int x, int y, int width, int height); public void fillOval(int x, int y, int width, int height);","title":"Oval"},{"location":"graphics/geometry/#arc","text":"public void drawArc(int x, int y, int width, int height, int startAngle, int arcAngle); public void fillArc(int x, int y, int width, int height, int startAngle, int arcAngle); Negative angle means rotating clockwise, positive means anti-clockwise.","title":"Arc"},{"location":"graphics/geometry/#drawing-polygons-and-polylines","text":"Polygons are closed multisided shapes composed of straight line segments. Polylines are sequences of connected points.","title":"Drawing Polygons and Polylines"},{"location":"graphics/geometry/#polygon-constructors","text":"public Polygon() public Polygon(int[] xValues, int[] yValues , int numberOfPoint)","title":"Polygon Constructors"},{"location":"graphics/geometry/#methods","text":"public void addPoint(int x, int y) To add one point to the existing polygon, we use this method. In Polygon, if the last point is different from the first, the polygon is closed by a line that connects the last point to the first. public Polygon() In Polygon, if the last point is different from the first, the polyline is not closed.","title":"Methods"},{"location":"graphics/geometry/#graphics-methods-for-drawing-polygons","text":"public void drawPolygon(int []xPoints, int []yPoints, int points); public void drawPolyLine(int []xPoints, int []yPoints, int points); public void drawPolygon(Polygon p); public void fillPolygon(Polygon p); public void fillPolygon(Polygon p);","title":"Graphics methods for drawing Polygons"},{"location":"introduction/","text":"Introduction Let's dive alpha : testing in own organization beta : testing in public nightly build : daily build or nightly build is the practice of completing software build of the latest version of program on a daily basis. JEE - Java Enterprise Edition (for enterprise level applications) JSE - Java Standard Edition (for stand alone) JME - Java Micro Edition (for mobiles) History of Java Benefits of Java and its features Simple and easy to learn. Java is almost fully OOP. Java is robust and secure. Architecture neutral and portable. Multithreading Provides High Performance How is Java platform independent? The meaning of platform independent is that, the java source code can run on all operating systems. A program is written in a language which is a human readable language. It may contain words, phrases etc which the machine does not understand. For the source code to be understood by the machine, it needs to be in a language understood by machines, typically a machine-level language. So, here comes the role of a compiler. The compiler converts the high-level language (human language) into a format understood by the machines. Therefore, a compiler is a program that translates the source code for another program from a programming language into executable code. This executable code may be a sequence of machine instructions that can be executed by the CPU directly, or it may be an intermediate representation that is interpreted by a virtual machine. This intermediate representation in Java is the Java Byte Code. Step by step Execution of Java Program Whenever, a program is written in JAVA, the javac compiles it. The result of the JAVA compiler is the .class file or the bytecode and not the machine native code (unlike C compiler). The bytecode generated is a non-executable code and needs an interpreter to execute on a machine. This interpreter is the JVM and thus the Bytecode is executed by the JVM. And finally program runs to give the desired output. Write once, run everytime.","title":"Introduction"},{"location":"introduction/#introduction","text":"","title":"Introduction"},{"location":"introduction/#lets-dive","text":"alpha : testing in own organization beta : testing in public nightly build : daily build or nightly build is the practice of completing software build of the latest version of program on a daily basis. JEE - Java Enterprise Edition (for enterprise level applications) JSE - Java Standard Edition (for stand alone) JME - Java Micro Edition (for mobiles)","title":"Let's dive"},{"location":"introduction/#history-of-java","text":"","title":"History of Java"},{"location":"introduction/#benefits-of-java-and-its-features","text":"Simple and easy to learn. Java is almost fully OOP. Java is robust and secure. Architecture neutral and portable. Multithreading Provides High Performance How is Java platform independent? The meaning of platform independent is that, the java source code can run on all operating systems. A program is written in a language which is a human readable language. It may contain words, phrases etc which the machine does not understand. For the source code to be understood by the machine, it needs to be in a language understood by machines, typically a machine-level language. So, here comes the role of a compiler. The compiler converts the high-level language (human language) into a format understood by the machines. Therefore, a compiler is a program that translates the source code for another program from a programming language into executable code. This executable code may be a sequence of machine instructions that can be executed by the CPU directly, or it may be an intermediate representation that is interpreted by a virtual machine. This intermediate representation in Java is the Java Byte Code. Step by step Execution of Java Program Whenever, a program is written in JAVA, the javac compiles it. The result of the JAVA compiler is the .class file or the bytecode and not the machine native code (unlike C compiler). The bytecode generated is a non-executable code and needs an interpreter to execute on a machine. This interpreter is the JVM and thus the Bytecode is executed by the JVM. And finally program runs to give the desired output. Write once, run everytime.","title":"Benefits of Java and its features"},{"location":"introduction/DataTypes/","text":"Data Types Java is strongly-typed language. int x = 10.5 ; \u274c boolean b = 0 ; \u274c Java doesn't support 1/0 as boolean data like C/C++ . Every variable and expression has a type. Every type is strictly defined. Every assignment should be checked by compile type compatibility. Note : if ( 1 ){ // Needs true / false. //doesn't run } No operator overloading, multiple inheritance are supported in Java. Syntax: data_type identifier = literal ; ADT - derived from Primitive Data Type and performs action.","title":"Data Types"},{"location":"introduction/DataTypes/#data-types","text":"Java is strongly-typed language. int x = 10.5 ; \u274c boolean b = 0 ; \u274c Java doesn't support 1/0 as boolean data like C/C++ . Every variable and expression has a type. Every type is strictly defined. Every assignment should be checked by compile type compatibility.","title":"Data Types"},{"location":"introduction/DataTypes/#note","text":"if ( 1 ){ // Needs true / false. //doesn't run } No operator overloading, multiple inheritance are supported in Java.","title":"Note :"},{"location":"introduction/DataTypes/#syntax","text":"data_type identifier = literal ; ADT - derived from Primitive Data Type and performs action.","title":"Syntax:"},{"location":"introduction/IDENTIFIER/","text":"Identifier name for program for identification purpose. Can be classname, method name, variable name or label name also. is case sensitive. is any sequence of letters, digits, \" _ \" , \" $ \" characters that doesn't begin with a digit. How many identifier here ? class Hello { public static void main ( String [] args ){ int numOne = 20 ; int numTwo = 10 ; } } String -> Wrapper Class main -> Name of function/identifier args -> arguments (variable, used for passing Command Line Arguments) numOne, numTwo -> Variable Hello -> Class Name username \u2705 #username \u274c num1 \u2705 1num \u274c class Test { int num = 10 ; int NUM = 20 ; int Num = 30 ; } Java is case-sensitive and all three declaration of variables are valid. Notes Identifier length is not limit. Max character - no length limit int while = 20; \u274c int String = 9; \u2705 String is class name, now reserved word.","title":"Identifiers"},{"location":"introduction/IDENTIFIER/#identifier","text":"name for program for identification purpose. Can be classname, method name, variable name or label name also. is case sensitive. is any sequence of letters, digits, \" _ \" , \" $ \" characters that doesn't begin with a digit. How many identifier here ? class Hello { public static void main ( String [] args ){ int numOne = 20 ; int numTwo = 10 ; } } String -> Wrapper Class main -> Name of function/identifier args -> arguments (variable, used for passing Command Line Arguments) numOne, numTwo -> Variable Hello -> Class Name username \u2705 #username \u274c num1 \u2705 1num \u274c class Test { int num = 10 ; int NUM = 20 ; int Num = 30 ; } Java is case-sensitive and all three declaration of variables are valid.","title":"Identifier"},{"location":"introduction/IDENTIFIER/#notes","text":"Identifier length is not limit. Max character - no length limit int while = 20; \u274c int String = 9; \u2705 String is class name, now reserved word.","title":"Notes"},{"location":"introduction/ReservedWord/","text":"Reserved Word Keywords Java reserved words are the words that are reserved by Java functions or other uses that cannot be used as identifiers (e.g., variable names, function names, class names) Keywords are the reserved words that keep special meaning in Java. (e.g. for, int, class ,etc.) They are 53 in number till now. They are 50 in number. All reserved words cannot be keywords. All keywords are reserved words. Used Keywords : Exception Handling (6) Class Related (6) Object Related (4) For Data Type (8) Control Flow (11) Modifier (11) Return Type (1) -> void Enum(1) -> enum Exception Handling (6) 1. try 2. catch 3. finally 4. throw 5. throws 6. assert Class Related (6) 1. class 2. interface 3. extends 4. implements 5. package 6. import For Data Type (8) 1. byte 2. short 3. int 4. long 5. float 6. double 7. boolean 8. char Control Flow (11) 1. if 2. else 3. switch 4. case 5. default 6. while 7. do 8. for 9. break 10. continue 11. return Modifier (11) 1. public 2. private 3. protected 4. static 5. final 6. abstract 7. synchronized 8. native 9. strictfp 10. transient 11. volatile","title":"Reserved Words"},{"location":"introduction/ReservedWord/#used-keywords","text":"Exception Handling (6) Class Related (6) Object Related (4) For Data Type (8) Control Flow (11) Modifier (11) Return Type (1) -> void Enum(1) -> enum","title":"Used Keywords :"},{"location":"introduction/ReservedWord/#exception-handling-6","text":"1. try 2. catch 3. finally 4. throw 5. throws 6. assert","title":"Exception Handling (6)"},{"location":"introduction/ReservedWord/#class-related-6","text":"1. class 2. interface 3. extends 4. implements 5. package 6. import","title":"Class Related (6)"},{"location":"introduction/ReservedWord/#for-data-type-8","text":"1. byte 2. short 3. int 4. long 5. float 6. double 7. boolean 8. char","title":"For Data Type (8)"},{"location":"introduction/ReservedWord/#control-flow-11","text":"1. if 2. else 3. switch 4. case 5. default 6. while 7. do 8. for 9. break 10. continue 11. return","title":"Control Flow (11)"},{"location":"introduction/ReservedWord/#modifier-11","text":"1. public 2. private 3. protected 4. static 5. final 6. abstract 7. synchronized 8. native 9. strictfp 10. transient 11. volatile","title":"Modifier (11)"},{"location":"io/","text":"Java io Package io refers to input / output. Provides for system input and output through data streams, serialization and the file system. Unless otherwise noted, passing a null argument to a constructor or method in any class or interface in this package will cause a NullPointerException to be thrown. Classes : File FileWriter FileReader BufferedWriter BufferedReader PrintWriter","title":"Introduction"},{"location":"io/#java-io-package","text":"io refers to input / output. Provides for system input and output through data streams, serialization and the file system. Unless otherwise noted, passing a null argument to a constructor or method in any class or interface in this package will cause a NullPointerException to be thrown.","title":"Java io Package"},{"location":"io/#classes","text":"File FileWriter FileReader BufferedWriter BufferedReader PrintWriter","title":"Classes :"},{"location":"io/BufferedReader/","text":"Read line by line or char by char Constructors BufferedReader br = new BufferedReader(\"abc.txt\"); \u274c // cannot directly communicate with data. BufferedReader br = new BufferedReader(Reader r); BufferedReader br = new BufferedReader(Reader r, int BufferSize); Methods int read() int read(char[] ch) void close() // 1, 2 3 are same as FileReader String readline() To insert line separator. Examples Text File A sample text file named \"gces.txt\". gces 2019 Happy New Year Read File Read from \"gces.txt\" with BufferedReader. import java.io.FileReader ; import java.io.IOException ; import java.io.BufferedReader ; class GCES { public static void main ( String [] args ) { try { BufferedReader br = new BufferedReader ( new FileReader ( \"gces.txt\" )); int i = br . read (); // Reads the character and stores in integer value - Unicode while ( i != - 1 ) { // Denotes no character System . out . print (( char ) i ); // Type hinting i = br . read (); // Iteratively reads the character one by one until loop terminates. } br . close (); } catch ( IOException error ) { error . printStackTrace (); } } } Read File With ReadLine Read from \"gces.txt\" with BufferedReader using readLine() method.. import java.io.FileReader ; import java.io.IOException ; import java.io.BufferedReader ; class GCES { public static void main ( String [] args ) { try { BufferedReader br = new BufferedReader ( new FileReader ( \"gces.txt\" )); int i = br . read (); // Reads the character and stores in integer value - Unicode while ( i != - 1 ) { // Denotes no character System . out . print (( char ) i ); // Type hinting i = br . read (); // Iteratively reads the character one by one until loop terminates. } br . close (); } catch ( IOException error ) { error . printStackTrace (); } } }","title":"BufferedReader"},{"location":"io/BufferedReader/#constructors","text":"BufferedReader br = new BufferedReader(\"abc.txt\"); \u274c // cannot directly communicate with data. BufferedReader br = new BufferedReader(Reader r); BufferedReader br = new BufferedReader(Reader r, int BufferSize);","title":"Constructors"},{"location":"io/BufferedReader/#methods","text":"int read() int read(char[] ch) void close() // 1, 2 3 are same as FileReader String readline() To insert line separator.","title":"Methods"},{"location":"io/BufferedReader/#examples","text":"","title":"Examples"},{"location":"io/BufferedReader/#text-file","text":"A sample text file named \"gces.txt\". gces 2019 Happy New Year","title":"Text File"},{"location":"io/BufferedReader/#read-file","text":"Read from \"gces.txt\" with BufferedReader. import java.io.FileReader ; import java.io.IOException ; import java.io.BufferedReader ; class GCES { public static void main ( String [] args ) { try { BufferedReader br = new BufferedReader ( new FileReader ( \"gces.txt\" )); int i = br . read (); // Reads the character and stores in integer value - Unicode while ( i != - 1 ) { // Denotes no character System . out . print (( char ) i ); // Type hinting i = br . read (); // Iteratively reads the character one by one until loop terminates. } br . close (); } catch ( IOException error ) { error . printStackTrace (); } } }","title":"Read File"},{"location":"io/BufferedReader/#read-file-with-readline","text":"Read from \"gces.txt\" with BufferedReader using readLine() method.. import java.io.FileReader ; import java.io.IOException ; import java.io.BufferedReader ; class GCES { public static void main ( String [] args ) { try { BufferedReader br = new BufferedReader ( new FileReader ( \"gces.txt\" )); int i = br . read (); // Reads the character and stores in integer value - Unicode while ( i != - 1 ) { // Denotes no character System . out . print (( char ) i ); // Type hinting i = br . read (); // Iteratively reads the character one by one until loop terminates. } br . close (); } catch ( IOException error ) { error . printStackTrace (); } } }","title":"Read File With ReadLine"},{"location":"io/BufferedWriter/","text":"Constructors : BufferedWriter bw = new BufferedWriter(\"abc.txt\"); \u274c // cannot directly communicate with data. BufferedWriter bw = new BufferedWriter(Writer w); BufferedWriter bw = new BufferedWriter(Writer w, int buffer size); Which one of these are true ? BufferedWriter bw = new BufferedWriter(\"abc.txt\") \u274c BufferedWriter bw = new BufferedWriter(new File(\"abc.txt\")) \u274c BufferedWriter bw = new BufferedWriter(new FileWriter(\"abc.txt\")) \u2705 BufferedWriter bw = new BufferedWriter(new FileWriter(new FileWriter(\"abc.txt\"))) \u274c Methods write (int ch) write(char[] ch) write(String s) flush() close() newLine() To insert line separator. BufferedWriter is almost similar to FileWriter but it uses internal buffer to write data into file. So, if the number of write operation are more, the actual IO operations are less and performance is better. You should use BufferedWriter when no. of write operations are more. Examples Write On File Write some text on file named \"gces.txt\". import java.io.* ; class GCES { public static void main ( String [] args ) { try { BufferedWriter bw = new BufferedWriter ( new FileWriter ( \"gces.txt\" )); bw . write ( \"gces\" ); bw . newLine (); bw . write ( \"2019\" ); bw . newLine (); bw . write ( \"Happy New Year\" ); bw . flush (); bw . close (); } catch ( IOException error ) { error . printStackTrace (); } } }","title":"BufferedWriter"},{"location":"io/BufferedWriter/#constructors","text":"BufferedWriter bw = new BufferedWriter(\"abc.txt\"); \u274c // cannot directly communicate with data. BufferedWriter bw = new BufferedWriter(Writer w); BufferedWriter bw = new BufferedWriter(Writer w, int buffer size);","title":"Constructors :"},{"location":"io/BufferedWriter/#which-one-of-these-are-true","text":"BufferedWriter bw = new BufferedWriter(\"abc.txt\") \u274c BufferedWriter bw = new BufferedWriter(new File(\"abc.txt\")) \u274c BufferedWriter bw = new BufferedWriter(new FileWriter(\"abc.txt\")) \u2705 BufferedWriter bw = new BufferedWriter(new FileWriter(new FileWriter(\"abc.txt\"))) \u274c","title":"Which one of these are true ?"},{"location":"io/BufferedWriter/#methods","text":"write (int ch) write(char[] ch) write(String s) flush() close() newLine() To insert line separator. BufferedWriter is almost similar to FileWriter but it uses internal buffer to write data into file. So, if the number of write operation are more, the actual IO operations are less and performance is better. You should use BufferedWriter when no. of write operations are more.","title":"Methods"},{"location":"io/BufferedWriter/#examples","text":"","title":"Examples"},{"location":"io/BufferedWriter/#write-on-file","text":"Write some text on file named \"gces.txt\". import java.io.* ; class GCES { public static void main ( String [] args ) { try { BufferedWriter bw = new BufferedWriter ( new FileWriter ( \"gces.txt\" )); bw . write ( \"gces\" ); bw . newLine (); bw . write ( \"2019\" ); bw . newLine (); bw . write ( \"Happy New Year\" ); bw . flush (); bw . close (); } catch ( IOException error ) { error . printStackTrace (); } } }","title":"Write On File"},{"location":"io/File/","text":"File f = new File (\"myTextFile.txt\") - Won't create physical file but this is java ile object. Check Existence System.out.println(f.exists()); // It returns false. Create File f.createNewFile(); f.exists(); // Now, it returns true. Java io is used on UNIX system. It can be used to represent directory also. Create Directory File f = new File (\"GCES\") ; f.mkdir() ; Constructors File f = new File(String name); To represent resources in current working directory. File f = new File(\"directory = name\",\"file name\"); File f = new File(File subdirectory, String name); File subdirectory refers to another object of File type. Methods boolean exists(); boolean createNewFile(); boolean mkdir(); boolean isFile(); boolean isDirectory(); String[] list(); long length(); boolean delete(); Examples Counts File inside Directory Counts file inside a directory path.. import java.io.File ; class CountsFile { private static int count ; // Count variable to count the no of files. public static void count (){ count ++ ; // Every time the method is envoked, count increases by 1. } public static int getCount (){ return count ; // Getter for count. } public static void main ( String [] args ){ try { File fileObjectOne = new File ( \"C:\\\\users\\\\arjun\\\\Desktop\\\\workspace\\\\Java\\\\packages\\\\io\\\\File\" ); // My directory structure. System . out . println ( \"Is this directory : \" + fileObjectOne . isDirectory ()); // Checks the given path is folder or not and returns boolean value. File [] thisDirectory = fileObjectOne . listFiles (); // Returns an array of abstract pathnames denoting the files in the directory denoted by this abstract pathname. If this abstract pathname does not denote a directory, then this method returns null. for ( File thisDir : thisDirectory ){ if ( thisDir . isFile ()){ // Tests whether the file denoted by this abstract pathname is a normal file. A file is normal if it is not a directory and, in addition, satisfies other system-dependent criteria. Any non-directory file created by a Java application is guaranteed to be a normal file. System . out . println ( \">> \" + thisDir . getName ()); // Returns the name of the file or directory denoted by this abstract pathname. This is just the last name in the pathname's name sequence. If the pathname's name sequence is empty, then the empty string is returned. count (); } } } catch ( Exception error ){ error . printStackTrace (); } finally { System . out . println ( \"Total no of files : \" + getCount ()); } } } Display File and Directories Display a list of files and directories inside a directory path. import java.io.File ; class DisplayAll { public static void main ( String [] args ){ try { File fileObjectOne = new File ( \"C:\\\\users\\\\arjun\\\\Desktop\\\\\" ); File [] thisDirectory = fileObjectOne . listFiles (); System . out . println ( \"\\nYou're in : \" + fileObjectOne . getAbsolutePath () + \"\\n\" ); for ( File thisDir : thisDirectory ){ if ( thisDir . isFile () || thisDir . isDirectory ()){ System . out . println ( \">> \" + thisDir . getName ()); } } } catch ( Exception error ){ error . printStackTrace (); } } }","title":"Introduction"},{"location":"io/File/#check-existence","text":"System.out.println(f.exists()); // It returns false.","title":"Check Existence"},{"location":"io/File/#create-file","text":"f.createNewFile(); f.exists(); // Now, it returns true. Java io is used on UNIX system. It can be used to represent directory also.","title":"Create File"},{"location":"io/File/#create-directory","text":"File f = new File (\"GCES\") ; f.mkdir() ;","title":"Create Directory"},{"location":"io/File/#constructors","text":"File f = new File(String name); To represent resources in current working directory. File f = new File(\"directory = name\",\"file name\"); File f = new File(File subdirectory, String name); File subdirectory refers to another object of File type.","title":"Constructors"},{"location":"io/File/#methods","text":"boolean exists(); boolean createNewFile(); boolean mkdir(); boolean isFile(); boolean isDirectory(); String[] list(); long length(); boolean delete();","title":"Methods"},{"location":"io/File/#examples","text":"","title":"Examples"},{"location":"io/File/#counts-file-inside-directory","text":"Counts file inside a directory path.. import java.io.File ; class CountsFile { private static int count ; // Count variable to count the no of files. public static void count (){ count ++ ; // Every time the method is envoked, count increases by 1. } public static int getCount (){ return count ; // Getter for count. } public static void main ( String [] args ){ try { File fileObjectOne = new File ( \"C:\\\\users\\\\arjun\\\\Desktop\\\\workspace\\\\Java\\\\packages\\\\io\\\\File\" ); // My directory structure. System . out . println ( \"Is this directory : \" + fileObjectOne . isDirectory ()); // Checks the given path is folder or not and returns boolean value. File [] thisDirectory = fileObjectOne . listFiles (); // Returns an array of abstract pathnames denoting the files in the directory denoted by this abstract pathname. If this abstract pathname does not denote a directory, then this method returns null. for ( File thisDir : thisDirectory ){ if ( thisDir . isFile ()){ // Tests whether the file denoted by this abstract pathname is a normal file. A file is normal if it is not a directory and, in addition, satisfies other system-dependent criteria. Any non-directory file created by a Java application is guaranteed to be a normal file. System . out . println ( \">> \" + thisDir . getName ()); // Returns the name of the file or directory denoted by this abstract pathname. This is just the last name in the pathname's name sequence. If the pathname's name sequence is empty, then the empty string is returned. count (); } } } catch ( Exception error ){ error . printStackTrace (); } finally { System . out . println ( \"Total no of files : \" + getCount ()); } } }","title":"Counts File inside Directory"},{"location":"io/File/#display-file-and-directories","text":"Display a list of files and directories inside a directory path. import java.io.File ; class DisplayAll { public static void main ( String [] args ){ try { File fileObjectOne = new File ( \"C:\\\\users\\\\arjun\\\\Desktop\\\\\" ); File [] thisDirectory = fileObjectOne . listFiles (); System . out . println ( \"\\nYou're in : \" + fileObjectOne . getAbsolutePath () + \"\\n\" ); for ( File thisDir : thisDirectory ){ if ( thisDir . isFile () || thisDir . isDirectory ()){ System . out . println ( \">> \" + thisDir . getName ()); } } } catch ( Exception error ){ error . printStackTrace (); } } }","title":"Display File and Directories"},{"location":"io/File/CLA/","text":"Program that displays files and directories based on Command Line Arguments passed. First path, then filter :) Cases No CLA provided : - It displays all files and directories from the default path. javac DisplayWithCLA.java && java Display -f or -d provided : - It displays either files or directories from the default path. javac DisplayWithCLA.java && java Display -f // Displays files from default path. javac DisplayWithCLA.java && java Display -d // Displays directories from default path. Path provided : - It displays all files and directories from the given path. javac DisplayWithCLA.java && java Display C:\\users Path with -f or -d provided : - It displays either files or directories from the given path. javac DisplayWithCLA.java && java Display C:\\Users -f // Displays files from given path. javac DisplayWithCLA.java && java Display C:\\users -d // Displays directories from given path. Source Code // Importing File class from Java io package. // CLA in documentation refers to Command Line Argument. import java.io.File ; // Creating a class named Display. class Display { public static void main ( String [] args ){ // To prevent any of the exception that may arise, I put the codes under try block. try { // File type object is created. This is used when no path is passed as Command Line Argument. File defaultPath = new File ( \"C:\\\\users\\\\arjun\\\\Desktop\" ); // File type array is created for the every file present on default path. File [] filesInDefaultDirectory = defaultPath . listFiles (); // If the Command Line Argument is provided. if ( args . length != 0 ){ // If only one Command Line Argument is passed. if ( args . length == 1 ){ // Creating a file type object from the Given Command Line Argument. File fileFromPath = new File ( args [ 0 ] ); // If CLA is either -f or -d. if ( args [ 0 ] . equals ( \"-f\" ) || args [ 0 ] . equals ( \"-d\" )){ // If CLA is -f. if ( args [ 0 ] . equals ( \"-f\" )){ // Assigns each file object of array to another file type object; for-each loop. System . out . println ( \"\\nFiles listing on default path : \" ); for ( File filesInDefaultDir : filesInDefaultDirectory ){ // Returns true if the file type object is file. if ( filesInDefaultDir . isFile ()){ System . out . println ( \">> \" + filesInDefaultDir . getName ()); } } System . out . println ( \"Provided Command Line Argument : \" + args [ 0 ] ); // If CLA is -d. } else if ( args [ 0 ] . equals ( \"-d\" )){ System . out . println ( \"\\nDirectory listing on default path : \" ); // Assigns each file object of array to another file type object; for-each loop. for ( File foldersInDefaultDir : filesInDefaultDirectory ){ // Returns true if the file type object is directory. if ( foldersInDefaultDir . isDirectory ()){ System . out . println ( \">> \" + foldersInDefaultDir . getName ()); } } System . out . println ( \"Provided Command Line Argument : \" + args [ 0 ] ); } // If CLA is path of any directory. } else if ( fileFromPath . isDirectory ()){ // Assigning CLA to string variable. String path = args [ 0 ] ; // Creating the file type object array of the files and directories present in the given path. File [] thisDirectoryFromPath = fileFromPath . listFiles (); System . out . println ( \"\\nYou're in : \" + fileFromPath . getAbsolutePath () + \"\\n\" ); // Assigns each file object of array to another file type object; for-each loop. for ( File thisDirFromPath : thisDirectoryFromPath ){ // Prints if the file type object is either file or directory. if ( thisDirFromPath . isFile () || thisDirFromPath . isDirectory ()){ System . out . println ( \">> \" + thisDirFromPath . getName ()); } } System . out . println ( \"Provided Path : \" + path ); } // Checks if CLA equals to two. } else if ( args . length == 2 ){ // Creates file type object from the CLA number one. File fileFromPath = new File ( args [ 0 ] ); // File type array is created for the every file present on default path. File [] thisDirectoryFromPath = fileFromPath . listFiles (); System . out . println ( \"\\nYou're in : \" + fileFromPath . getAbsolutePath () + \"\\n\" ); for ( File thisDirFromPath : thisDirectoryFromPath ){ // Prints if the file type object is either file or directory. if ( thisDirFromPath . isFile () || thisDirFromPath . isDirectory ()){ // Checks if CLA number two is either -f or -d. if ( args [ 1 ] . equals ( \"-f\" )){ if ( thisDirFromPath . isFile ()){ System . out . println ( \">> \" + thisDirFromPath . getName ()); } } else if ( args [ 1 ] . equals ( \"-d\" )){ if ( thisDirFromPath . isDirectory ()){ System . out . println ( \">> \" + thisDirFromPath . getName ()); } } } } } } else { // This runs if none of CLA is passed; it displays all files and directories from default path provided. File [] thisDirectoryDefault = defaultPath . listFiles (); System . out . println ( \"\\nYou're in : \" + defaultPath . getAbsolutePath () + \"\\n\" ); for ( File thisDirDefault : thisDirectoryDefault ){ if ( thisDirDefault . isFile () || thisDirDefault . isDirectory ()){ System . out . println ( \">> \" + thisDirDefault . getName ()); } } System . out . println ( \"Default Path : \" + defaultPath ); } } catch ( Exception error ){ // Prints the error if arised. error . printStackTrace (); } } }","title":"File CLI App"},{"location":"io/File/CLA/#cases","text":"No CLA provided : - It displays all files and directories from the default path. javac DisplayWithCLA.java && java Display -f or -d provided : - It displays either files or directories from the default path. javac DisplayWithCLA.java && java Display -f // Displays files from default path. javac DisplayWithCLA.java && java Display -d // Displays directories from default path. Path provided : - It displays all files and directories from the given path. javac DisplayWithCLA.java && java Display C:\\users Path with -f or -d provided : - It displays either files or directories from the given path. javac DisplayWithCLA.java && java Display C:\\Users -f // Displays files from given path. javac DisplayWithCLA.java && java Display C:\\users -d // Displays directories from given path.","title":"Cases"},{"location":"io/File/CLA/#source-code","text":"// Importing File class from Java io package. // CLA in documentation refers to Command Line Argument. import java.io.File ; // Creating a class named Display. class Display { public static void main ( String [] args ){ // To prevent any of the exception that may arise, I put the codes under try block. try { // File type object is created. This is used when no path is passed as Command Line Argument. File defaultPath = new File ( \"C:\\\\users\\\\arjun\\\\Desktop\" ); // File type array is created for the every file present on default path. File [] filesInDefaultDirectory = defaultPath . listFiles (); // If the Command Line Argument is provided. if ( args . length != 0 ){ // If only one Command Line Argument is passed. if ( args . length == 1 ){ // Creating a file type object from the Given Command Line Argument. File fileFromPath = new File ( args [ 0 ] ); // If CLA is either -f or -d. if ( args [ 0 ] . equals ( \"-f\" ) || args [ 0 ] . equals ( \"-d\" )){ // If CLA is -f. if ( args [ 0 ] . equals ( \"-f\" )){ // Assigns each file object of array to another file type object; for-each loop. System . out . println ( \"\\nFiles listing on default path : \" ); for ( File filesInDefaultDir : filesInDefaultDirectory ){ // Returns true if the file type object is file. if ( filesInDefaultDir . isFile ()){ System . out . println ( \">> \" + filesInDefaultDir . getName ()); } } System . out . println ( \"Provided Command Line Argument : \" + args [ 0 ] ); // If CLA is -d. } else if ( args [ 0 ] . equals ( \"-d\" )){ System . out . println ( \"\\nDirectory listing on default path : \" ); // Assigns each file object of array to another file type object; for-each loop. for ( File foldersInDefaultDir : filesInDefaultDirectory ){ // Returns true if the file type object is directory. if ( foldersInDefaultDir . isDirectory ()){ System . out . println ( \">> \" + foldersInDefaultDir . getName ()); } } System . out . println ( \"Provided Command Line Argument : \" + args [ 0 ] ); } // If CLA is path of any directory. } else if ( fileFromPath . isDirectory ()){ // Assigning CLA to string variable. String path = args [ 0 ] ; // Creating the file type object array of the files and directories present in the given path. File [] thisDirectoryFromPath = fileFromPath . listFiles (); System . out . println ( \"\\nYou're in : \" + fileFromPath . getAbsolutePath () + \"\\n\" ); // Assigns each file object of array to another file type object; for-each loop. for ( File thisDirFromPath : thisDirectoryFromPath ){ // Prints if the file type object is either file or directory. if ( thisDirFromPath . isFile () || thisDirFromPath . isDirectory ()){ System . out . println ( \">> \" + thisDirFromPath . getName ()); } } System . out . println ( \"Provided Path : \" + path ); } // Checks if CLA equals to two. } else if ( args . length == 2 ){ // Creates file type object from the CLA number one. File fileFromPath = new File ( args [ 0 ] ); // File type array is created for the every file present on default path. File [] thisDirectoryFromPath = fileFromPath . listFiles (); System . out . println ( \"\\nYou're in : \" + fileFromPath . getAbsolutePath () + \"\\n\" ); for ( File thisDirFromPath : thisDirectoryFromPath ){ // Prints if the file type object is either file or directory. if ( thisDirFromPath . isFile () || thisDirFromPath . isDirectory ()){ // Checks if CLA number two is either -f or -d. if ( args [ 1 ] . equals ( \"-f\" )){ if ( thisDirFromPath . isFile ()){ System . out . println ( \">> \" + thisDirFromPath . getName ()); } } else if ( args [ 1 ] . equals ( \"-d\" )){ if ( thisDirFromPath . isDirectory ()){ System . out . println ( \">> \" + thisDirFromPath . getName ()); } } } } } } else { // This runs if none of CLA is passed; it displays all files and directories from default path provided. File [] thisDirectoryDefault = defaultPath . listFiles (); System . out . println ( \"\\nYou're in : \" + defaultPath . getAbsolutePath () + \"\\n\" ); for ( File thisDirDefault : thisDirectoryDefault ){ if ( thisDirDefault . isFile () || thisDirDefault . isDirectory ()){ System . out . println ( \">> \" + thisDirDefault . getName ()); } } System . out . println ( \"Default Path : \" + defaultPath ); } } catch ( Exception error ){ // Prints the error if arised. error . printStackTrace (); } } }","title":"Source Code"},{"location":"io/FileReader/","text":"to read characters data or text data. Here, we can read character by character by character; not line by line. Constructors FileReader fr = new FileReader(String fileName); FileReader fr = new FileReader(File f); If no file is available, this will throw exception. Methods int read () Unicode value of character. int read (char[] ch) no of characters copied from file into array. void close() Examples Text File Hello my name is Arjun. Read File By Looping Demo of a FileReader class. import java.io.FileReader ; import java.io.IOException ; class FileReaderDemo { // Method : int read() public static void main ( String [] args ){ try { FileReader fr = new FileReader ( \"myText.txt\" ); int i = fr . read (); while ( i != - 1 ){ // Denotes no character System . out . print (( char ) i ); // Type-hinting i = fr . read (); } fr . close (); } catch ( IOException error ){ error . printStackTrace (); } } } Read File With Character Array Demo of a FileReader class using a array. import java.io.* ; class FileReaderDemo { public static void main ( String [] args ){ try { // Method : int read(char[] ch) File f = new File ( \"myText.txt\" ); // Dynamically allocating the size of the array according to the text length inside file. char [] ch = new char [ ( int ) f . length () ] ; FileReader fr = new FileReader ( f ); fr . read ( ch ); // Assigns each character into another character variable. for ( char ch1 : ch ){ System . out . print ( ch1 ); } fr . close (); } catch ( IOException error ){ error . printStackTrace (); } } }","title":"FileReader"},{"location":"io/FileReader/#constructors","text":"FileReader fr = new FileReader(String fileName); FileReader fr = new FileReader(File f); If no file is available, this will throw exception.","title":"Constructors"},{"location":"io/FileReader/#methods","text":"int read () Unicode value of character. int read (char[] ch) no of characters copied from file into array. void close()","title":"Methods"},{"location":"io/FileReader/#examples","text":"","title":"Examples"},{"location":"io/FileReader/#text-file","text":"Hello my name is Arjun.","title":"Text File"},{"location":"io/FileReader/#read-file-by-looping","text":"Demo of a FileReader class. import java.io.FileReader ; import java.io.IOException ; class FileReaderDemo { // Method : int read() public static void main ( String [] args ){ try { FileReader fr = new FileReader ( \"myText.txt\" ); int i = fr . read (); while ( i != - 1 ){ // Denotes no character System . out . print (( char ) i ); // Type-hinting i = fr . read (); } fr . close (); } catch ( IOException error ){ error . printStackTrace (); } } }","title":"Read File By Looping"},{"location":"io/FileReader/#read-file-with-character-array","text":"Demo of a FileReader class using a array. import java.io.* ; class FileReaderDemo { public static void main ( String [] args ){ try { // Method : int read(char[] ch) File f = new File ( \"myText.txt\" ); // Dynamically allocating the size of the array according to the text length inside file. char [] ch = new char [ ( int ) f . length () ] ; FileReader fr = new FileReader ( f ); fr . read ( ch ); // Assigns each character into another character variable. for ( char ch1 : ch ){ System . out . print ( ch1 ); } fr . close (); } catch ( IOException error ){ error . printStackTrace (); } } }","title":"Read File With Character Array"},{"location":"io/FileWriter/","text":"Constructors FileWriter fw = new FileWriter(String name); FileWriter fw = new FileWriter(File f); FileWriter fw = new FileWriter(String name, boolean append); FileWriter fw = new FileWriter(File f, boolean append); Constructors listed 1 and 2 overrides the existing data, but Constructors listed 3 and 4 appends to existing data. If no file is available, this will create that file. Methods write (int ch) to write a single character to the file. fw.write(100); // Unicode value for d is 100 fw.write('d'); // Both writes d. write(char[] ch) write(String s) flush() To guarantee our data including last char also on written property. close() Examples FileWriter Demo import java.io.* ; class FileWriterDemo { public static void main ( String [] args ) { try { FileWriter fw = new FileWriter ( \"abc.txt\" ); fw . write ( 100 ); fw . write ( \"abc \\n Software\" ); // Paragraph Break fw . write ( '\\n' ); // Character Array char [] ch = { 'a' , 'b' , 'c' }; // Writing character array fw . write ( ch ); fw . write ( '\\n' ); fw . flush (); fw . close (); } catch ( IOException error ) { error . printStackTrace (); } } } FileWriter Append Demo import java.io.* ; class FileWriterAppendDemo { public static void main ( String [] args ){ try { // Appends FileWriter fw = new FileWriter ( \"abc.txt\" , true ); fw . write ( \"\\n Arjun\" ); fw . flush (); fw . close (); } catch ( IOException error ){ error . printStackTrace (); } } }","title":"FileWriter"},{"location":"io/FileWriter/#constructors","text":"FileWriter fw = new FileWriter(String name); FileWriter fw = new FileWriter(File f); FileWriter fw = new FileWriter(String name, boolean append); FileWriter fw = new FileWriter(File f, boolean append); Constructors listed 1 and 2 overrides the existing data, but Constructors listed 3 and 4 appends to existing data. If no file is available, this will create that file.","title":"Constructors"},{"location":"io/FileWriter/#methods","text":"write (int ch) to write a single character to the file. fw.write(100); // Unicode value for d is 100 fw.write('d'); // Both writes d. write(char[] ch) write(String s) flush() To guarantee our data including last char also on written property. close()","title":"Methods"},{"location":"io/FileWriter/#examples","text":"","title":"Examples"},{"location":"io/FileWriter/#filewriter-demo","text":"import java.io.* ; class FileWriterDemo { public static void main ( String [] args ) { try { FileWriter fw = new FileWriter ( \"abc.txt\" ); fw . write ( 100 ); fw . write ( \"abc \\n Software\" ); // Paragraph Break fw . write ( '\\n' ); // Character Array char [] ch = { 'a' , 'b' , 'c' }; // Writing character array fw . write ( ch ); fw . write ( '\\n' ); fw . flush (); fw . close (); } catch ( IOException error ) { error . printStackTrace (); } } }","title":"FileWriter Demo"},{"location":"io/FileWriter/#filewriter-append-demo","text":"import java.io.* ; class FileWriterAppendDemo { public static void main ( String [] args ){ try { // Appends FileWriter fw = new FileWriter ( \"abc.txt\" , true ); fw . write ( \"\\n Arjun\" ); fw . flush (); fw . close (); } catch ( IOException error ){ error . printStackTrace (); } } }","title":"FileWriter Append Demo"},{"location":"io/PrintWriter/","text":"Solves problems of FileWriter and BufferedWriter Constructors : PrintWriter bw = new PrintWriter(String fname); PrintWriter bw = new PrintWriter(File f); PrintWriter bw = new PrintWriter(Writer w); Methods write (int ch) write(char[] ch) write(String s) flush() close() print(char ch)...print(int i)...print(boolean b)...print(String s) println(char ch)...println(int i)...println(boolean b)...println(String s) Examples Write On File Write some text on file named \"abc.txt\". import java.io.* ; class Sample { public static void main ( String [] args ) { try { PrintWriter pw = new PrintWriter ( \"abc.txt\" ); pw . print ( 'd' ); // Writes character pw . print ( 100 + \"\\n\" ); // Writes integer pw . print ( true + \"\\n\" ); // Writes boolean pw . print ( 'c' + \"\\n\" ); // Writes Character pw . print ( \"gces\" + \"\\n\" ); // Writes string pw . flush (); pw . close (); } catch ( IOException error ) { error . printStackTrace (); } } }","title":"PrintWriter"},{"location":"io/PrintWriter/#constructors","text":"PrintWriter bw = new PrintWriter(String fname); PrintWriter bw = new PrintWriter(File f); PrintWriter bw = new PrintWriter(Writer w);","title":"Constructors :"},{"location":"io/PrintWriter/#methods","text":"write (int ch) write(char[] ch) write(String s) flush() close() print(char ch)...print(int i)...print(boolean b)...print(String s) println(char ch)...println(int i)...println(boolean b)...println(String s)","title":"Methods"},{"location":"io/PrintWriter/#examples","text":"","title":"Examples"},{"location":"io/PrintWriter/#write-on-file","text":"Write some text on file named \"abc.txt\". import java.io.* ; class Sample { public static void main ( String [] args ) { try { PrintWriter pw = new PrintWriter ( \"abc.txt\" ); pw . print ( 'd' ); // Writes character pw . print ( 100 + \"\\n\" ); // Writes integer pw . print ( true + \"\\n\" ); // Writes boolean pw . print ( 'c' + \"\\n\" ); // Writes Character pw . print ( \"gces\" + \"\\n\" ); // Writes string pw . flush (); pw . close (); } catch ( IOException error ) { error . printStackTrace (); } } }","title":"Write On File"},{"location":"io/more-examples/","text":"Text File A sample text file named \"abc.txt\". First line from File one Second Line from File one A sample text file named \"xyz.txt\". First line from File two Second Line from File Two Display Text Files Display all text files inside a given directory path.. import java.io.* ; class DisplayTextFiles { public static void main ( String [] args ) throws IOException { String path = \"C:/users/arjun/Desktop\" ; File [] filesFromPath = ( new File ( path )). listFiles (); for ( File fileFromPath : filesFromPath ) { if ( fileFromPath . getName (). endsWith ( \".txt\" )) { // First getName() will return the file name into string and endsWith() checks the file extension like REGEX. System . out . println ( fileFromPath . getName ()); // Prints all txt files in Desktop. } } } } Merge Text Files Read from \"abc.txt\" and \"xyz.txt\" and merge into \"finalText.txt\" file. import java.io.* ; class MergeFiles { public static void main ( String [] args ) throws IOException { try { PrintWriter pw = new PrintWriter ( new File ( \"finalText.txt\" )); BufferedReader br = new BufferedReader ( new FileReader ( \"abc.txt\" )); String line = br . readLine (); while ( line != null ) { // Denotes no character pw . write ( line + \"\\n\" ); line = br . readLine (); // Iteratively reads the line one by one until loop terminates. } br = new BufferedReader ( new FileReader ( \"xyz.txt\" )); line = br . readLine (); while ( line != null ) { // Denotes no character pw . write ( line + \"\\n\" ); line = br . readLine (); // Iteratively reads the line one by one until loop terminates. } pw . flush (); pw . close (); br . close (); } catch ( IOException error ){ error . printStackTrace (); } } } Merge Text Files Alternatively Read from \"abc.txt\" and \"xyz.txt\" and merge into \"finalText.txt\" file while writing each lines from both files alternatively.. import java.io.* ; class MergeFiles { public static void main ( String [] args ) throws IOException { try { PrintWriter pw = new PrintWriter ( new File ( \"finalText.txt\" )); BufferedReader brOne = new BufferedReader ( new FileReader ( \"abc.txt\" )); BufferedReader brTwo = new BufferedReader ( new FileReader ( \"xyz.txt\" )); String lineOne = brOne . readLine (); String lineTwo = brTwo . readLine (); while ( lineOne != null || lineTwo != null ) { // Denotes no character pw . write ( lineOne + \"\\n\" ); pw . write ( lineTwo + \"\\n\" ); lineOne = brOne . readLine (); // Iteratively reads the line one by one until loop terminates. lineTwo = brTwo . readLine (); } pw . flush (); pw . close (); brOne . close (); brTwo . close (); } catch ( IOException error ){ error . printStackTrace (); } } } Merge Text Files From Given Path Read text files from a given path and merge them. import java.io.* ; class DisplayTextFiles { public static void main ( String [] args ) throws IOException { BufferedReader br ; // Declaring a variable of BufferedReader data type so that it can be used inside loop to read every .txt files listed there. String path = \"C:/users/arjun/Desktop/\" ; // This is pre-specified path, you can change it. PrintWriter pw = new PrintWriter ( path + \"mergedText.txt\" ); String line ; // This will get the lines on text files. String location ; File [] filesFromPath = ( new File ( path )). listFiles (); for ( File fileFromPath : filesFromPath ) { if ( fileFromPath . getName (). endsWith ( \".txt\" ) && ! fileFromPath . getName (). equals ( \"mergedText.txt\" )) { // First getName() will return the file name into string and endsWith() checks the file extension like REGEX. It excludes the mergedText.txt too. System . out . println ( \"Reading from \" + fileFromPath . getName ()); // Prints progress message in console. location = path + fileFromPath . getName (); br = new BufferedReader ( new FileReader ( location )); pw . write ( \"From \" + fileFromPath . getName () + \"\\n\" ); // This will write the text. line = br . readLine (); // Reads a line from specified file and returns string. while ( line != null ) { // Loop executes until the line-read is not null. pw . println ( line + \"\\n\" ); // Writes each lines into the PrintWriter variable. line = br . readLine (); } pw . write ( \"\\n\" ); } } System . out . println ( \"Writing completed.\" ); // br is not initialized at this scope, so need to close() it. pw . flush (); pw . close (); } }","title":"More Examples"},{"location":"io/more-examples/#text-file","text":"A sample text file named \"abc.txt\". First line from File one Second Line from File one A sample text file named \"xyz.txt\". First line from File two Second Line from File Two","title":"Text File"},{"location":"io/more-examples/#display-text-files","text":"Display all text files inside a given directory path.. import java.io.* ; class DisplayTextFiles { public static void main ( String [] args ) throws IOException { String path = \"C:/users/arjun/Desktop\" ; File [] filesFromPath = ( new File ( path )). listFiles (); for ( File fileFromPath : filesFromPath ) { if ( fileFromPath . getName (). endsWith ( \".txt\" )) { // First getName() will return the file name into string and endsWith() checks the file extension like REGEX. System . out . println ( fileFromPath . getName ()); // Prints all txt files in Desktop. } } } }","title":"Display Text Files"},{"location":"io/more-examples/#merge-text-files","text":"Read from \"abc.txt\" and \"xyz.txt\" and merge into \"finalText.txt\" file. import java.io.* ; class MergeFiles { public static void main ( String [] args ) throws IOException { try { PrintWriter pw = new PrintWriter ( new File ( \"finalText.txt\" )); BufferedReader br = new BufferedReader ( new FileReader ( \"abc.txt\" )); String line = br . readLine (); while ( line != null ) { // Denotes no character pw . write ( line + \"\\n\" ); line = br . readLine (); // Iteratively reads the line one by one until loop terminates. } br = new BufferedReader ( new FileReader ( \"xyz.txt\" )); line = br . readLine (); while ( line != null ) { // Denotes no character pw . write ( line + \"\\n\" ); line = br . readLine (); // Iteratively reads the line one by one until loop terminates. } pw . flush (); pw . close (); br . close (); } catch ( IOException error ){ error . printStackTrace (); } } }","title":"Merge Text Files"},{"location":"io/more-examples/#merge-text-files-alternatively","text":"Read from \"abc.txt\" and \"xyz.txt\" and merge into \"finalText.txt\" file while writing each lines from both files alternatively.. import java.io.* ; class MergeFiles { public static void main ( String [] args ) throws IOException { try { PrintWriter pw = new PrintWriter ( new File ( \"finalText.txt\" )); BufferedReader brOne = new BufferedReader ( new FileReader ( \"abc.txt\" )); BufferedReader brTwo = new BufferedReader ( new FileReader ( \"xyz.txt\" )); String lineOne = brOne . readLine (); String lineTwo = brTwo . readLine (); while ( lineOne != null || lineTwo != null ) { // Denotes no character pw . write ( lineOne + \"\\n\" ); pw . write ( lineTwo + \"\\n\" ); lineOne = brOne . readLine (); // Iteratively reads the line one by one until loop terminates. lineTwo = brTwo . readLine (); } pw . flush (); pw . close (); brOne . close (); brTwo . close (); } catch ( IOException error ){ error . printStackTrace (); } } }","title":"Merge Text Files Alternatively"},{"location":"io/more-examples/#merge-text-files-from-given-path","text":"Read text files from a given path and merge them. import java.io.* ; class DisplayTextFiles { public static void main ( String [] args ) throws IOException { BufferedReader br ; // Declaring a variable of BufferedReader data type so that it can be used inside loop to read every .txt files listed there. String path = \"C:/users/arjun/Desktop/\" ; // This is pre-specified path, you can change it. PrintWriter pw = new PrintWriter ( path + \"mergedText.txt\" ); String line ; // This will get the lines on text files. String location ; File [] filesFromPath = ( new File ( path )). listFiles (); for ( File fileFromPath : filesFromPath ) { if ( fileFromPath . getName (). endsWith ( \".txt\" ) && ! fileFromPath . getName (). equals ( \"mergedText.txt\" )) { // First getName() will return the file name into string and endsWith() checks the file extension like REGEX. It excludes the mergedText.txt too. System . out . println ( \"Reading from \" + fileFromPath . getName ()); // Prints progress message in console. location = path + fileFromPath . getName (); br = new BufferedReader ( new FileReader ( location )); pw . write ( \"From \" + fileFromPath . getName () + \"\\n\" ); // This will write the text. line = br . readLine (); // Reads a line from specified file and returns string. while ( line != null ) { // Loop executes until the line-read is not null. pw . println ( line + \"\\n\" ); // Writes each lines into the PrintWriter variable. line = br . readLine (); } pw . write ( \"\\n\" ); } } System . out . println ( \"Writing completed.\" ); // br is not initialized at this scope, so need to close() it. pw . flush (); pw . close (); } }","title":"Merge Text Files From Given Path"},{"location":"literals/","text":"Macro Rendering Error TemplateNotFound : literals/testForLiterals/DoubleWithD.java Traceback (most recent call last): File \"/opt/hostedtoolcache/Python/3.10.4/x64/lib/python3.10/site-packages/mkdocs_macros/plugin.py\", line 480, in render return md_template.render(**page_variables) File \"/opt/hostedtoolcache/Python/3.10.4/x64/lib/python3.10/site-packages/jinja2/environment.py\", line 1291, in render self.environment.handle_exception() File \"/opt/hostedtoolcache/Python/3.10.4/x64/lib/python3.10/site-packages/jinja2/environment.py\", line 926, in handle_exception raise rewrite_traceback_stack(source=source) File \"