diff --git a/ch04/HelloMethod.java b/ch04/HelloMethod.java
new file mode 100644
index 0000000..a285fcb
--- /dev/null
+++ b/ch04/HelloMethod.java
@@ -0,0 +1,35 @@
+import java.sql.SQLOutput;
+
+public class HelloMethod
+{
+    public static void main(String[] args)
+    {
+        String firstName = "Fred ";
+        String secondName = "Wilma ";
+        String thirdName = "Pebbles";
+        String lastName = "Flintstone";
+        printHelloWorld(firstName, lastName);
+        printHelloWorld(secondName, lastName);
+        printHelloWorld(thirdName, lastName);
+        printOhNo();
+    }
+
+    public static void printHelloWorld(String fname, String lName)
+    {
+        System.out.println("Hello World " + fname + lName);
+    }
+
+    public static void printOhNo()
+    {
+        System.out.println("Oh No !!!!!!!!!!");
+
+    }
+
+    public static void printNumberNoSign(int number)
+    {
+
+    }
+
+
+}
+
diff --git a/ch05/.idea/vcs.xml b/ch05/.idea/vcs.xml
new file mode 100644
index 0000000..6c0b863
--- /dev/null
+++ b/ch05/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/ch05/Comparison.java b/ch05/Comparison.java
new file mode 100644
index 0000000..47b93b5
--- /dev/null
+++ b/ch05/Comparison.java
@@ -0,0 +1,25 @@
+public class Comparison
+{
+    public static void main(String[] args)
+    {
+        String txt="Fantastic";
+        String lang="Java";
+
+        Boolean state = (txt==lang);//Assign test result
+        System.out.println("String Equality Test: "+state);
+
+        state= (txt !=lang);
+        System.out.println("string Inequality Test: "+state);
+
+        int dozen =12;
+        int score =20;
+        state =(dozen>score);
+        System.out.println("Greater Than Test: "+state);
+
+        state =(dozen<score);
+        System.out.println("Less Than Test: "+state);
+
+
+    }
+
+}
diff --git a/ch05/Condition.java b/ch05/Condition.java
new file mode 100644
index 0000000..fdd9203
--- /dev/null
+++ b/ch05/Condition.java
@@ -0,0 +1,15 @@
+public class Condition
+{
+    public static void main(String[] args)
+    {
+        int num1= 1357;
+        int num2 = 2468;
+        String result;
+        result = (num1%2!=0)?"Odd":"Even";
+        System.out.println(num1+" is "+result);
+
+        result = (num2%2!=0)?"Odd":"Even;";
+        System.out.println(num2 + " is "+ result);
+
+    }
+}
diff --git a/ch05/CrazyEd.java b/ch05/CrazyEd.java
new file mode 100644
index 0000000..61057d2
--- /dev/null
+++ b/ch05/CrazyEd.java
@@ -0,0 +1,76 @@
+import java.util.Scanner;
+
+public class CrazyEd
+{
+
+
+    public static void main(String[] args)
+    {
+        Scanner scanner = new Scanner(System.in);
+
+        System.out.println("What size would you like?");
+        int diameter = scanner.nextInt();
+
+        if (diameter > 3)
+            System.out.println("This order is crazy and you are stupid.  We obviously don't sell that here.");
+
+        System.out.println("How many yards would you like?");
+        int length = scanner.nextInt();
+
+        if (length > 1000)
+            System.out.println("This order is crazy and you are stupid.  There's not that much cheese in Wisconsin.");
+        System.out.println("Your total delivered cost is:");
+        boolean price1 = diameter == 1;
+        boolean shipping1 = diameter == 1;
+        boolean price2 = diameter == 2;
+        boolean shipping2 = diameter == 2;
+        boolean price3 = diameter == 3;
+        boolean shipping3 = diameter == 3;
+
+
+        {
+            if (price1 && length <= 50)
+                System.out.println("$" + (2 * (length) + 2 * (length)));
+
+            if (price1 && length > 50)
+                System.out.println("$" + (2 * (length)));
+
+
+            if (price2 && length <= 50)
+                System.out.println("$" + (4 * (length) + 2 * (length)));
+
+            if (price2 && length > 50)
+                System.out.println("$" + (4 * (length)));
+
+            if (price3 && length <= 50)
+                System.out.println("$" + (6 * (length) + 4 * (length)));
+
+            if (price3 && length > 50)
+                System.out.println("$" + (6 * (length)));
+
+
+
+           /* if (price4)
+                System.out.println("This order is crazy and you are stupid.  We obviously don't sell that here.");
+*/
+        }
+/* public static void priceperyard(int price)
+    {
+
+
+        switch (price)
+        {
+            case 1: price=2;
+
+                System.out.println("The price of your order is:"+price*length);
+            case 2: price=3;
+            case 3: price=6;
+
+
+        }
+*/
+    }
+
+
+}
+
diff --git a/ch05/Logic.java b/ch05/Logic.java
new file mode 100644
index 0000000..a04845a
--- /dev/null
+++ b/ch05/Logic.java
@@ -0,0 +1,17 @@
+public class Logic
+{
+    public static void main(String[] args)
+    {
+        boolean yes=true;
+        boolean no =false;
+        System.out.println("Both YesYes True:"+(yes && yes));
+        System.out.println("Both YesNot True:" +(yes && no));
+
+        System.out.println("Either YesYes True: "+(yes||yes));
+        System.out.println("Either YesNo True: "+(yes||no));
+        System.out.println("Either NoNo True: "+(no||no));
+
+        System.out.println("Original Yes Value: "+yes);
+        System.out.println("Inverse Yes Value: "+!yes);
+    }
+}
diff --git a/ch05/Precedence.java b/ch05/Precedence.java
new file mode 100644
index 0000000..a67cc97
--- /dev/null
+++ b/ch05/Precedence.java
@@ -0,0 +1,14 @@
+public class Precedence
+{
+    public static void main(String[] args)
+    {
+        int sum = 32-8+16*2;
+        System.out.println("Default order: "+sum);
+
+        sum=(32-8+16)*2;
+        System.out.println("Specified order: "+sum);
+
+        sum=(32-(8+16))*2;
+        System.out.println("Nested specific order: "+sum);
+    }
+}
diff --git a/ch05/Switch.java b/ch05/Switch.java
new file mode 100644
index 0000000..c1e8fde
--- /dev/null
+++ b/ch05/Switch.java
@@ -0,0 +1,22 @@
+public class Switch
+{
+    public static void main(String[] args)
+    {
+        int month = 2, year = 2016, num = 31;
+        switch (month)
+        {
+            case 4:
+            case 6:
+            case 9:
+            case 11:
+                num = 30;
+                break;
+            case 2: num = (year%4==0)?29:28;
+                break;
+        }
+        System.out.println(month+"/"+year+":"+num+"days");
+
+    }
+
+
+}
diff --git a/ch06/.idea/vcs.xml b/ch06/.idea/vcs.xml
new file mode 100644
index 0000000..6c0b863
--- /dev/null
+++ b/ch06/.idea/vcs.xml
@@ -0,0 +1,6 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project version="4">
+  <component name="VcsDirectoryMappings">
+    <mapping directory="$PROJECT_DIR$/.." vcs="Git" />
+  </component>
+</project>
\ No newline at end of file
diff --git a/ch06/Demo.java b/ch06/Demo.java
new file mode 100644
index 0000000..c0c9486
--- /dev/null
+++ b/ch06/Demo.java
@@ -0,0 +1,32 @@
+import java.util.Scanner;
+
+public class Demo
+{
+    public static void main(String[] args)
+    {
+        printGreeting("HELLO");
+
+
+        Scanner in = new Scanner(System.in);
+
+        System.out.println("Enter a number:");
+
+        int firstNumber=in.nextInt();
+
+        System.out.println("Enter a number:");
+
+        int secondNumber=in.nextInt();
+
+        int total = firstNumber + secondNumber;
+        System.out.println("the total is "+total);
+    }
+
+    public static void printTotal()
+    {
+
+    }
+    public static void printGreeting(String greeting)
+    {
+        System.out.println("<<<"+ greeting + ">>>");
+    }
+}
diff --git a/ch06/MathUtil.java b/ch06/MathUtil.java
new file mode 100644
index 0000000..26e2ae8
--- /dev/null
+++ b/ch06/MathUtil.java
@@ -0,0 +1,55 @@
+public class MathUtil
+{
+    public static void main(String[] args)
+    {
+        int total = getTotal(1, 2);
+
+        System.out.println(total);
+        double cargoVolume = getCargoVolume(2, 2, 2, false);
+        System.out.println(cargoVolume);
+
+        int absoluteAnswer = absoluteSum(-5, 2);
+        System.out.println(absoluteAnswer);
+
+        int absoluteAnswerTwo = absoluteSum(-5, 2, -3);
+        System.out.println(absoluteAnswerTwo);
+
+    }
+
+    public static int getTotal(int firstNumber, int secondNumber)
+    {
+        int sum = firstNumber + secondNumber;
+
+        return sum;
+    }
+
+    public static double getCargoVolume(double height, double length, double depth, boolean heavyDuty)
+    {
+
+        double materialThickness = .25;
+        if (heavyDuty) ;
+        materialThickness = .25 * 2;
+        double interiorHeight = height - (2 * materialThickness);
+        double interiorLength = length - (2 * materialThickness);
+        double interiorDepth = depth - (2 * materialThickness);
+        double cargoVolume = interiorHeight * interiorLength * interiorDepth;
+        return cargoVolume;
+    }
+
+    public static int absoluteSum(int numberone, int numberTwo)
+    {
+        int absoluteOne = Math.abs(numberone);
+        int absoluteTwo = Math.abs(numberTwo);
+        int absoluteAnswer = absoluteOne + absoluteTwo;
+        return absoluteAnswer;
+    }
+
+    public static int absoluteSum(int numberone, int numberTwo, int numberThree)
+    {
+        int absoluteOne = Math.abs(numberone);
+        int absoluteTwo = Math.abs(numberTwo);
+        int absoluteThree = Math.abs(numberThree);
+        int absoluteAnswerTwo = absoluteOne + absoluteTwo + absoluteThree;
+        return absoluteAnswerTwo;
+    }
+}
diff --git a/ch06/Names.java b/ch06/Names.java
new file mode 100644
index 0000000..ad8d04c
--- /dev/null
+++ b/ch06/Names.java
@@ -0,0 +1,24 @@
+public class Names
+{
+    public static void main(String[] args)
+    {
+        //String decoration=%%%%%%%;
+        String returnValue=getMyName();
+
+        String fancyName=getMyFancyName("%%%%%%%%");
+
+        System.out.println(returnValue);
+        System.out.println(fancyName);
+    }
+
+    public static String getMyName( )
+
+    {
+        return "Stephen";
+    }
+    public static String getMyFancyName(String decoration)
+    {
+        String fancyName = decoration +"Stephen"+decoration;
+        return fancyName;
+    }
+}