From 593d6ba42f13d9cc0ea1b7c0abbf835ddc00d704 Mon Sep 17 00:00:00 2001
From: raedaniel36 <raedaniel@earthlink.net>
Date: Tue, 17 Apr 2018 18:15:01 -0500
Subject: [PATCH 1/5] Chapter 2 Exercises.

---
 ch02/Arithmetic.java    | 24 ++++++++++++++++++
 ch02/Assignment.java    | 25 +++++++++++++++++++
 ch02/Constants.java     | 27 ++++++++++++++++++++
 ch02/DataTypes.java     | 21 ++++++++++++++++
 ch02/Date.java          | 28 +++++++++++++++++++++
 ch02/DoubleByZero.java  | 14 +++++++++++
 ch02/FirstVariable.java | 14 +++++++++++
 ch02/IntByZero.java     | 16 ++++++++++++
 ch02/IntExtremes.java   | 19 ++++++++++++++
 ch02/LoveJava.java      | 16 ++++++++++++
 ch02/Time.java          | 55 +++++++++++++++++++++++++++++++++++++++++
 ch02/Withdrawal.java    | 23 +++++++++++++++++
 12 files changed, 282 insertions(+)
 create mode 100644 ch02/Arithmetic.java
 create mode 100644 ch02/Assignment.java
 create mode 100644 ch02/Constants.java
 create mode 100644 ch02/DataTypes.java
 create mode 100644 ch02/Date.java
 create mode 100644 ch02/DoubleByZero.java
 create mode 100644 ch02/FirstVariable.java
 create mode 100644 ch02/IntByZero.java
 create mode 100644 ch02/IntExtremes.java
 create mode 100644 ch02/LoveJava.java
 create mode 100644 ch02/Time.java
 create mode 100644 ch02/Withdrawal.java

diff --git a/ch02/Arithmetic.java b/ch02/Arithmetic.java
new file mode 100644
index 0000000..2625233
--- /dev/null
+++ b/ch02/Arithmetic.java
@@ -0,0 +1,24 @@
+//Exercise 2-ES-1.
+//Exercise 4.
+
+public class Arithmetic
+{
+    public static void main (String[] args)
+    {
+        int num = 100;
+        int factor = 20;
+        int sum = 0;
+
+        sum = num + factor; // 100+20
+        System.out.println("Addition sum: " + sum);
+
+        sum = num - factor; // 100-20
+        System.out.println("Subtraction sum: " + sum);
+
+        sum = num * factor;  // 100*20
+        System.out.println("Multiplication sum: " + sum);
+
+        sum = num / factor;  // 100/20
+        System.out.println("Division sum: " + sum);
+    }
+}
diff --git a/ch02/Assignment.java b/ch02/Assignment.java
new file mode 100644
index 0000000..0c1c1b4
--- /dev/null
+++ b/ch02/Assignment.java
@@ -0,0 +1,25 @@
+//Exercise 2-ES-1.
+//Exercise 5.
+
+public class Assignment
+{
+    public static void main (String[] args)
+    {
+        String txt = "Fantastic";
+        String lang = "Java";
+        txt += lang; //Assign concatenated String.
+        System.out.println("Add & Assign Strings: " + txt);
+
+        int sum = 10;
+        int num = 20;
+        sum += num; //Assign result (10+20=30)
+        System.out.println("Add & Assign Integers: " + sum);
+
+        int factor = 5;
+        sum *= factor; //Assign result (30*5=150)
+        System.out.println("Multiplication sum: " + sum);
+
+        sum /= factor; //Assign result (150/5=30)
+        System.out.println("Division sum: " + sum);
+    }
+}
diff --git a/ch02/Constants.java b/ch02/Constants.java
new file mode 100644
index 0000000..b972d78
--- /dev/null
+++ b/ch02/Constants.java
@@ -0,0 +1,27 @@
+//Exercise 2-ES-1.
+//Exercise 3.
+
+public class Constants
+{
+    public static void main (String[] args)
+    {
+        //Constant score values.
+        final int TOUCHDOWN = 6;
+        final int CONVERSION = 1;
+        final int FIELDGOAL = 3;
+
+        //Calculate points scored.
+        int td;
+        int pat;
+        int fg;
+        int total;
+
+        td = 4 * TOUCHDOWN;
+        pat = 3 * CONVERSION;
+        fg = 2 * FIELDGOAL;
+        total = (td + pat + fg);
+
+        //Output calculated total.
+        System.out.println("Score: " + total);
+    }
+}
diff --git a/ch02/DataTypes.java b/ch02/DataTypes.java
new file mode 100644
index 0000000..705d5dd
--- /dev/null
+++ b/ch02/DataTypes.java
@@ -0,0 +1,21 @@
+//Exercise 2-ES-1.
+//Exercise 2.
+
+public class DataTypes
+{
+    public static void main (String[] args)
+    {
+        char letter = 'M';
+        String title = "Java in Easy Steps";
+        int number = 365;
+        float decimal = 98.6f;
+        boolean result = true;
+
+        System.out.println("Initial is " + letter);
+        System.out.println("Book is " + title);
+        System.out.println("Days are " + number);
+        System.out.println("Temperature is " + decimal);
+        System.out.println("Answer is " + result);
+
+    }
+}
diff --git a/ch02/Date.java b/ch02/Date.java
new file mode 100644
index 0000000..b222604
--- /dev/null
+++ b/ch02/Date.java
@@ -0,0 +1,28 @@
+//Exercise 2-2.
+
+public class Date
+{
+    public static void main (String[] args)
+    {
+        String day = "Monday";
+        int date = 16;
+        String month = "April";
+        int year = 2018;
+
+        System.out.println(day);
+        System.out.println(date);
+        System.out.println(month);
+        System.out.println(year);
+
+        System.out.println();
+
+        System.out.println("American Format:");
+        System.out.println(day + ", " + month + " " + date + ", " + year);
+
+        System.out.println();
+
+        System.out.println("European Format:");
+        System.out.println(day + " " + date + " " + month + " " + year);
+
+    }
+}
diff --git a/ch02/DoubleByZero.java b/ch02/DoubleByZero.java
new file mode 100644
index 0000000..5a9b7aa
--- /dev/null
+++ b/ch02/DoubleByZero.java
@@ -0,0 +1,14 @@
+//Exercise 2-C.
+
+public class DoubleByZero
+{
+        public static void main (String[] args)
+        {
+            double var1 = 42.0;
+            double var2 = 0.0;
+            double result = (var1 / var2);
+
+            System.out.println("The result is:  " + result);
+        }
+}
+//The result is:  Infinity
\ No newline at end of file
diff --git a/ch02/FirstVariable.java b/ch02/FirstVariable.java
new file mode 100644
index 0000000..720b476
--- /dev/null
+++ b/ch02/FirstVariable.java
@@ -0,0 +1,14 @@
+//Exercise 2-ES-1.
+//Exercise 1.
+
+public class FirstVariable
+{
+    public static void main (String[] args)
+    {
+        String message = "Initial value.";
+        System.out.println(message);
+
+        message = "Modified value.";
+        System.out.println(message);
+    }
+}
diff --git a/ch02/IntByZero.java b/ch02/IntByZero.java
new file mode 100644
index 0000000..f0dc7a0
--- /dev/null
+++ b/ch02/IntByZero.java
@@ -0,0 +1,16 @@
+//Exercise 2-B.
+
+public class IntByZero
+{
+    public static void main (String[] args)
+    {
+        int var1 = 42;
+//        int var2 = 0;
+        int var2 = 2;
+        int result = (var1 / var2);
+
+        System.out.println("The result is:  " + result);
+    }
+}
+// Exception in thread "main" java.lang.ArithmeticException: / by zero
+//	at IntByZero.main(IntByZero.java:7)
\ No newline at end of file
diff --git a/ch02/IntExtremes.java b/ch02/IntExtremes.java
new file mode 100644
index 0000000..285f0c7
--- /dev/null
+++ b/ch02/IntExtremes.java
@@ -0,0 +1,19 @@
+//Exercise 2-A.
+
+public class IntExtremes
+{
+    public static void main (String[] args)
+    {
+        int positiveInt = 2147483647;
+        System.out.println(positiveInt);
+        positiveInt = positiveInt + 1;
+        System.out.println(positiveInt);
+
+        System.out.println();
+
+        int negativeInt = -2147483648;
+        System.out.println(negativeInt);
+        negativeInt = negativeInt - 1;
+        System.out.println(negativeInt);
+    }
+}
diff --git a/ch02/LoveJava.java b/ch02/LoveJava.java
new file mode 100644
index 0000000..abac822
--- /dev/null
+++ b/ch02/LoveJava.java
@@ -0,0 +1,16 @@
+//Exercise 2-E.
+
+public class LoveJava
+{
+    public static void main (String[] args)
+    {
+        System.out.println("I love Java!");
+
+        String word1 = "I";
+        String word2 = "love";
+        String word3 = "Java!";
+
+        System.out.println(word1 + " " + word2 + " " + word3);
+
+    }
+}
diff --git a/ch02/Time.java b/ch02/Time.java
new file mode 100644
index 0000000..4c1f7b3
--- /dev/null
+++ b/ch02/Time.java
@@ -0,0 +1,55 @@
+//Exercise 2-3.
+
+public class Time
+{
+    public static void main (String[] args)
+    {
+        int hour = 22;
+        int minute = 49;
+        int second = 45;
+
+        final int NUMSECINDAY = 86400;
+
+        System.out.print("The number of seconds since midnight is:  ");
+        System.out.println((((hour * 60) + minute) * 60) + second); //82,185
+
+        System.out.println();
+
+        System.out.print("The number of seconds remaining in the day is:  ");
+        System.out.println( NUMSECINDAY - ((((hour * 60) + minute) * 60) + second));
+
+        System.out.println();
+
+        double hour2 = 22.0;
+        double maxhr2 = 24.0;
+        System.out.println("Fraction of the day that has passed: ");
+        System.out.println(hour2 / maxhr2);
+
+        System.out.println();
+
+        double oldhour = 22.0;
+        double oldmin = 49.0;
+        double oldsec = 45.0;
+
+        double newhour = 23.0;
+        double newmin = 12.0;
+        double newsec = 35.0;
+
+        double oldtime = ((((oldhour * 60) + oldmin) * 60) + oldsec);
+        double newtime = ((((newhour * 60) + newmin) * 60) + newsec);
+        double elapsedtime = newtime - oldtime;
+
+        System.out.print("Elapsed time in seconds is: ");
+        System.out.println(elapsedtime);
+
+        System.out.print("Elapsed time in minutes is: ");
+        System.out.println(elapsedtime / 60);
+
+        System.out.print("Elapsed time in hours is: ");
+        System.out.println((elapsedtime / 60) / 60);
+
+
+
+
+    }
+}
diff --git a/ch02/Withdrawal.java b/ch02/Withdrawal.java
new file mode 100644
index 0000000..85aebe5
--- /dev/null
+++ b/ch02/Withdrawal.java
@@ -0,0 +1,23 @@
+//Exercise 2-D.
+
+public class Withdrawal
+{
+    public static void main (String[] args)
+    {
+        int withdrawal = 2;
+        int var20 = withdrawal / 20;
+        int left20 = withdrawal % 20;
+        int var10 = left20 / 10;
+        int left10 = left20 % 10;
+        int var05 = left10 / 5;
+        int var01 = left10 % 5;
+
+        System.out.println("The amount of the withdrawal is:  " + withdrawal);
+        System.out.println("The number of $20s dispensed is:  "  + var20);
+//        System.out.println(left20);
+        System.out.println("The number of $10s dispensed is:  " + var10);
+//        System.out.println(left10);
+        System.out.println("The number of $5s dispensed is:  " + var05);
+        System.out.println("The number of $1s dispensed is:  " + var01);
+    }
+}

From b868c0d000a9a3a0d58325d5078058dc56cd6b33 Mon Sep 17 00:00:00 2001
From: raedaniel36 <raedaniel@earthlink.net>
Date: Wed, 18 Apr 2018 20:00:57 -0500
Subject: [PATCH 2/5] Exercises for Chapter 3.

---
 ch03/ConvertTemp.java   | 25 +++++++++++++++++++++++++
 ch03/ConvertTime.java   | 34 ++++++++++++++++++++++++++++++++++
 ch03/Escape.java        | 17 +++++++++++++++++
 ch03/GuessMyNumber.java | 29 +++++++++++++++++++++++++++++
 4 files changed, 105 insertions(+)
 create mode 100644 ch03/ConvertTemp.java
 create mode 100644 ch03/ConvertTime.java
 create mode 100644 ch03/Escape.java
 create mode 100644 ch03/GuessMyNumber.java

diff --git a/ch03/ConvertTemp.java b/ch03/ConvertTemp.java
new file mode 100644
index 0000000..3471738
--- /dev/null
+++ b/ch03/ConvertTemp.java
@@ -0,0 +1,25 @@
+//Exercise 3-2.
+
+import java.util.Scanner;
+
+public class ConvertTemp {
+
+    public static void main(String[] args)
+    {
+        double tempCelsius;
+        double tempFahrenheit;
+        Scanner in = new Scanner(System.in);
+
+
+        // prompt the user and get the value
+        System.out.print("What is the Celsius temperature? ");
+        tempCelsius = in.nextDouble();
+
+        // convert and output the result
+        tempFahrenheit = ((tempCelsius * (9.0 / 5.0)) + 32.0);
+        System.out.println(tempCelsius);
+        System.out.println(tempFahrenheit);
+        System.out.printf("%.1f C = %.1f F\n", tempCelsius, tempFahrenheit);
+    }
+}
+
diff --git a/ch03/ConvertTime.java b/ch03/ConvertTime.java
new file mode 100644
index 0000000..6c2071d
--- /dev/null
+++ b/ch03/ConvertTime.java
@@ -0,0 +1,34 @@
+//Exercise 3-3.
+
+import java.util.Scanner;
+
+public class ConvertTime
+{
+    public static void main(String[] args)
+    {
+        int inputSeconds;
+
+        int numberHours;
+        int numberMinutes;
+        int numberSeconds;
+
+        Scanner in = new Scanner(System.in);
+
+        // prompt the user and get the value
+        System.out.print("What is the number of seconds? ");
+        inputSeconds = in.nextInt();
+
+        // convert and output the result
+        numberSeconds = inputSeconds % 60;
+        System.out.println(numberSeconds);
+
+        numberMinutes = ((inputSeconds - numberSeconds) / 60) % 60;
+        System.out.println(numberMinutes);
+
+        numberHours = ((inputSeconds - numberSeconds) / 60) / 60;
+        System.out.println(numberHours);
+
+        System.out.println(inputSeconds + " seconds = " + numberHours + " hours, " + numberMinutes + " minutes, " + numberSeconds + " seconds");
+    }
+}
+
diff --git a/ch03/Escape.java b/ch03/Escape.java
new file mode 100644
index 0000000..0fee943
--- /dev/null
+++ b/ch03/Escape.java
@@ -0,0 +1,17 @@
+//Exercise 3-ES-1
+
+public class Escape
+{
+    public static void main( String[] args)
+    {
+        String header = "\n\tNEW YORK 3-DAY FORECAST:\n";
+        header += "\n\tDay\t\t\tHigh\tLow\t\tConditions\n";
+        header += "\t---\t\t\t----\t---\t\t----------\n";
+
+        String forecast = "\tSunday\t\t68F\t\t48F\t\tSunny\n";
+        forecast += "\tMonday\t\t69F\t\t57F\t\tSunny\n";
+        forecast += "\tTuesday\t\t71F\t\t50F\t\tCloudy\n";
+
+        System.out.print(header + forecast);
+    }
+}
diff --git a/ch03/GuessMyNumber.java b/ch03/GuessMyNumber.java
new file mode 100644
index 0000000..9509a87
--- /dev/null
+++ b/ch03/GuessMyNumber.java
@@ -0,0 +1,29 @@
+//Exercise 3-4.
+
+import java.util.Random;
+import java.util.Scanner;
+
+public class GuessMyNumber
+{
+    public static void main(String[] args)
+    {
+        // pick a random number
+        Random random = new Random();
+        int number = random.nextInt(100) + 1;
+        // printing this so I can check the code
+        System.out.println(number);
+
+        // prompt the user and get the value
+        int guess;
+        Scanner in = new Scanner(System.in);
+
+        System.out.print("Choose a number:  ");
+        guess = in.nextInt();
+        int difference = number - guess;
+        System.out.println("You chose: " + guess);
+        System.out.println("The number I chose was: " + number);
+        System.out.println("You were off by: " + difference);
+    }
+
+}
+

From f210b486bf7124888bcb3ae295bbc8fa912d736f Mon Sep 17 00:00:00 2001
From: raedaniel36 <raedaniel@earthlink.net>
Date: Wed, 18 Apr 2018 20:01:40 -0500
Subject: [PATCH 3/5] Chapter 2 Exercises.

---
 ch02/Time.java | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/ch02/Time.java b/ch02/Time.java
index 4c1f7b3..0ecb788 100644
--- a/ch02/Time.java
+++ b/ch02/Time.java
@@ -8,7 +8,7 @@ public static void main (String[] args)
         int minute = 49;
         int second = 45;
 
-        final int NUMSECINDAY = 86400;
+        final int NUM_SEC_IN_DAY = 86400;
 
         System.out.print("The number of seconds since midnight is:  ");
         System.out.println((((hour * 60) + minute) * 60) + second); //82,185
@@ -16,7 +16,7 @@ public static void main (String[] args)
         System.out.println();
 
         System.out.print("The number of seconds remaining in the day is:  ");
-        System.out.println( NUMSECINDAY - ((((hour * 60) + minute) * 60) + second));
+        System.out.println( NUM_SEC_IN_DAY - ((((hour * 60) + minute) * 60) + second));
 
         System.out.println();
 

From 0f1d98da417f461a11883e94c35d9700887bb2be Mon Sep 17 00:00:00 2001
From: raedaniel36 <raedaniel@earthlink.net>
Date: Wed, 18 Apr 2018 20:02:54 -0500
Subject: [PATCH 4/5] Exercises for Chapter 4.

---
 ch04/BegMethodSignature.java | 18 ++++++++++
 ch04/DemoMath.java           | 26 ++++++++++++++
 ch04/Employee.java           | 68 ++++++++++++++++++++++++++++++++++++
 ch04/Exercise4_1.java        | 38 ++++++++++++++++++++
 ch04/MathUtil.java           | 28 +++++++++++++++
 ch04/PrintDates.java         | 40 +++++++++++++++++++++
 ch04/SimpleMethods.java      | 31 ++++++++++++++++
 7 files changed, 249 insertions(+)
 create mode 100644 ch04/BegMethodSignature.java
 create mode 100644 ch04/DemoMath.java
 create mode 100644 ch04/Employee.java
 create mode 100644 ch04/Exercise4_1.java
 create mode 100644 ch04/MathUtil.java
 create mode 100644 ch04/PrintDates.java
 create mode 100644 ch04/SimpleMethods.java

diff --git a/ch04/BegMethodSignature.java b/ch04/BegMethodSignature.java
new file mode 100644
index 0000000..1083679
--- /dev/null
+++ b/ch04/BegMethodSignature.java
@@ -0,0 +1,18 @@
+//Exercise 4-G.
+
+public class BegMethodSignature
+{
+    public static void main(String[] args)
+    {
+        printSum(1, 2, 3, 4, 5, 6, 7, 8, 9, 10);
+        printSum(5, 5, 5, 5, 5, 5, 5, 5, 5, 5);
+    }
+
+    private static void printSum(int a, int b, int c, int d, int e, int f, int g, int h, int i, int j)
+    {
+        int sum = a + b + c + d + e + f + g + h + i + j;
+        System.out.println("The values of a through j are:  " + a + ", " + b + ", " + c + ", " + d + ", " + e + ", " + f + ", " + g + ", " + h + ", " + i + ", " + j);
+        System.out.println("This sum of a through j is:  " + sum);
+        System.out.println();
+    }
+}
diff --git a/ch04/DemoMath.java b/ch04/DemoMath.java
new file mode 100644
index 0000000..85a9d1f
--- /dev/null
+++ b/ch04/DemoMath.java
@@ -0,0 +1,26 @@
+//Exercise 4-E.
+
+public class DemoMath
+{
+    public static void main(String[] args)
+    {
+        int a = -4;
+        int b = 5;
+
+        System.out.println("The value of a is:  " + a);
+        System.out.println("The absolute value of a is:  " + Math.abs(a));
+        System.out.println();
+
+        System.out.println("The value of a is:  " + a);
+        System.out.println("The value of b is:  " + b);
+        System.out.println("The max value of a and b is:  " + Math.max(a, b));
+        System.out.println();
+
+        double c = 6.0;
+        System.out.println("The value of c is:  " + c);
+        System.out.println("The value of c to the power of c is:  " + Math.pow(c, c));
+        System.out.println();
+
+        System.out.println("The valued of PI is:  " + Math.PI);
+    }
+}
diff --git a/ch04/Employee.java b/ch04/Employee.java
new file mode 100644
index 0000000..c6e40b1
--- /dev/null
+++ b/ch04/Employee.java
@@ -0,0 +1,68 @@
+//Exercise 4-H.
+
+import java.util.Scanner;
+import java.util.Random;
+
+public class Employee
+{
+    public static void main(String[] args)
+    {
+        int birthYear = 1995;
+        boolean isUnionMember = false;
+        String firstName = "Robin";
+        String middleName = "Ann";
+        String lastName = "Daniel";
+        int employeeNumber;
+
+        printHeader();
+
+        Scanner in = new Scanner(System.in);
+        System.out.println("Please enter your 5 digit employee number:  ");
+        employeeNumber = in.nextInt();
+
+        printFullName(lastName, firstName, middleName);
+        printUnionStatus(isUnionMember);
+        printAge(birthYear);
+        printEvenOrOdd(employeeNumber);
+        printGenerateSecretPassword(employeeNumber);
+    }
+
+    private static void printHeader()
+    {
+        String header = "Welcome to the WallabyTech Employee Application\n";
+        header += "-----------------------------------------------\n";
+        System.out.print(header);
+    }
+
+    private static void printFullName(String ln, String fn, String mn)
+    {
+        System.out.println(ln + ", " + fn + " " + mn);
+    }
+
+    private static void printUnionStatus(boolean s)
+    {
+        System.out.println("Your union status is:  " + s);
+    }
+
+    private static void printAge(int a)
+    {
+        final int CURRENT_YEAR = 2018;
+        int age = CURRENT_YEAR - a;
+        System.out.println("Your age is:  " + age);
+    }
+
+    private static void printEvenOrOdd(int n)
+    {
+        int typeOfNumber = (n % 2);
+        System.out.println("Employee Number is even (0) or odd (1): " + typeOfNumber);
+    }
+
+    private static void printGenerateSecretPassword(int n)
+    {
+        Random random = new Random();
+        int number = random.nextInt(10) + 1;
+        int password = ((n + number) * 5);
+//        System.out.println(number); //Did this to check the computation.
+        System.out.println("Employee's random secret ps is: " + password);
+    }
+}
diff --git a/ch04/Exercise4_1.java b/ch04/Exercise4_1.java
new file mode 100644
index 0000000..898bcc9
--- /dev/null
+++ b/ch04/Exercise4_1.java
@@ -0,0 +1,38 @@
+//Exercise 4-1.
+
+public class Exercise4_1
+{
+    public static void zoop()
+    {
+        baffle();
+        System.out.print("You wugga ");
+        baffle();
+    }
+
+    public static void main(String[] args)
+    {
+        System.out.print("No, I ");
+        zoop();
+        System.out.print("I ");
+        baffle();
+    }
+
+    public static void baffle()
+    {
+        System.out.print("wug");
+        ping();
+    }
+
+    public static void ping()
+    {
+        System.out.println(".");
+//        baffle();  <= Causes an endless loop.
+    }
+}
+//No, I wug. (new line)
+//You wugga wug. (new line)
+//I wug.
+
+//invoke baffle() at the end of ping()
+//No, I wug.
+//wug.   Endless loop of "wug."
\ No newline at end of file
diff --git a/ch04/MathUtil.java b/ch04/MathUtil.java
new file mode 100644
index 0000000..4b49c6d
--- /dev/null
+++ b/ch04/MathUtil.java
@@ -0,0 +1,28 @@
+//Exercise 4-F.
+
+public class MathUtil
+{
+    public static void main(String[] args)
+    {
+        printDifference(-4, 5);
+        printAbsValue(-45);
+        printDifference(1000, 4000000);
+    }
+
+    private static void printDifference(int a, int b)
+    {
+        int difference = a - b;
+        System.out.println("The values of a and b are:  " + a + " and " + b);
+        System.out.println("This difference between a and b is:  " + difference);
+        System.out.println();
+        printAbsValue(difference);
+    }
+
+    private static void printAbsValue(int c)
+    {
+        int absoluteValue = Math.abs(c);
+        System.out.println("The value of c is:  " + c);
+        System.out.println("The absolute value of c is:  " + absoluteValue);
+        System.out.println();
+    }
+}
diff --git a/ch04/PrintDates.java b/ch04/PrintDates.java
new file mode 100644
index 0000000..59f3591
--- /dev/null
+++ b/ch04/PrintDates.java
@@ -0,0 +1,40 @@
+//Exercise 4-3.
+
+public class PrintDates
+{
+    public static void main(String[] args)
+    {
+        String day = "Wednesday";
+        int date = 18;
+        String month = "April";
+        int year = 2018;
+
+        printAmerican(day, date, month, year);
+        System.out.println();
+        printEuropean(day, date, month, year);
+    }
+
+    public static void printAmerican(String day, int date, String month, int year)
+    {
+        System.out.println("American format:");
+        System.out.print(day);
+        System.out.print(", ");
+        System.out.print(month);
+        System.out.print(" ");
+        System.out.print(date);
+        System.out.print(", ");
+        System.out.println(year);
+    }
+
+    public static void printEuropean(String day, int date, String month, int year)
+    {
+        System.out.println("European format:");
+        System.out.print(day);
+        System.out.print(" ");
+        System.out.print(date);
+        System.out.print(" ");
+        System.out.print(month);
+        System.out.print(" ");
+        System.out.println(year);
+    }
+}
diff --git a/ch04/SimpleMethods.java b/ch04/SimpleMethods.java
new file mode 100644
index 0000000..e4d8126
--- /dev/null
+++ b/ch04/SimpleMethods.java
@@ -0,0 +1,31 @@
+// Exercise 4-A.
+
+public class SimpleMethods
+{
+    public static void main(String[] args)
+    {
+        printCount(5);
+        printSum(4, 6);
+        printSum(7, 2);
+        printBoolean(true);
+        printBoolean(false);
+    }
+
+    private static void printCount(int count)
+    {
+        System.out.println("This count is:  " + count);
+    }
+
+    private static void printSum(int x, int y)
+    {
+        int z = x + y;
+        System.out.println(x + " + " + y + " = " + z);
+    }
+
+    private static void printBoolean(boolean isRich)
+    {
+        System.out.println("I am rich:  " + isRich);
+    }
+}
+
+

From 8c207fea6e049e1381fbe073dc3f96a6e358d907 Mon Sep 17 00:00:00 2001
From: raedaniel36 <raedaniel@earthlink.net>
Date: Thu, 19 Apr 2018 21:01:46 -0500
Subject: [PATCH 5/5] Chapter 5 Exercises.

---
 ch05/Comparison.java                 |  28 ++++++++
 ch05/Condition.java                  |  20 ++++++
 ch05/CrazyEdWholesaleCheese.java     | 101 +++++++++++++++++++++++++++
 ch05/Else.java                       |  24 +++++++
 ch05/EmailOffer.java                 |  29 ++++++++
 ch05/GreenCoffeeGrowersDiscount.java |  33 +++++++++
 ch05/If.java                         |  29 ++++++++
 ch05/Logic.java                      |  28 ++++++++
 ch05/LogicMethods.java               |  86 +++++++++++++++++++++++
 ch05/Precedence.java                 |  17 +++++
 ch05/Switch.java                     |  20 ++++++
 ch05/SwitchExample.java              |  69 ++++++++++++++++++
 ch05/TicketNumber.java               |  32 +++++++++
 13 files changed, 516 insertions(+)
 create mode 100644 ch05/Comparison.java
 create mode 100644 ch05/Condition.java
 create mode 100644 ch05/CrazyEdWholesaleCheese.java
 create mode 100644 ch05/Else.java
 create mode 100644 ch05/EmailOffer.java
 create mode 100644 ch05/GreenCoffeeGrowersDiscount.java
 create mode 100644 ch05/If.java
 create mode 100644 ch05/Logic.java
 create mode 100644 ch05/LogicMethods.java
 create mode 100644 ch05/Precedence.java
 create mode 100644 ch05/Switch.java
 create mode 100644 ch05/SwitchExample.java
 create mode 100644 ch05/TicketNumber.java

diff --git a/ch05/Comparison.java b/ch05/Comparison.java
new file mode 100644
index 0000000..b85eaff
--- /dev/null
+++ b/ch05/Comparison.java
@@ -0,0 +1,28 @@
+// Exercise 5-ES-1
+// Exercise 1
+
+public class Comparison
+{
+    public static void main(String[] args)
+    {
+      String txt = "Fantastic";
+      String lang = "Java";
+
+      boolean state = (txt == lang);
+      System.out.println("String Equality Test:  " + state);
+
+      state = (txt != lang);
+      System.out.println("String Inequality Test:  " + state);
+
+      System.out.println();
+
+      int dozen = 12;
+      int score = 10;
+
+      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..e05b920
--- /dev/null
+++ b/ch05/Condition.java
@@ -0,0 +1,20 @@
+// Exercise 5-ES-1
+// Exercise 3
+
+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);
+
+        System.out.println();
+
+        result = (num2 % 2 != 0) ? "Odd" : "Even";
+        System.out.println( num2 + " is " + result);
+    }
+}
diff --git a/ch05/CrazyEdWholesaleCheese.java b/ch05/CrazyEdWholesaleCheese.java
new file mode 100644
index 0000000..8d5903c
--- /dev/null
+++ b/ch05/CrazyEdWholesaleCheese.java
@@ -0,0 +1,101 @@
+//Exercise 5-G.
+
+import java.util.Scanner;
+
+public class CrazyEdWholesaleCheese
+{
+        public static void main(String[] args)
+        {
+            Scanner in = new Scanner(System.in);
+
+            System.out.print("What size cheese would you like to order?  ");
+            int cheeseSize = in.nextInt();
+            switch(cheeseSize)
+            {
+                case 1 : case 2 : case 3 :
+                System.out.println("You chose: " + cheeseSize + " inch diameter string cheese.");
+                break;
+
+                default :
+                System.out.println("Please choose 1, 2, or 3 inch diameter string cheese.");
+                return;
+            }
+
+            System.out.println("What length of cheese would you like to order?  ");
+            int cheeseLength = in.nextInt();
+
+            determineCostOfOrder(cheeseSize, cheeseLength);
+        }
+
+        public static void determineCostOfOrder(int cheeseSize, int cheeseLength)
+        {
+            final int COST_OF_1_INCH_CHEESE = 2;
+            final int COST_OF_2_INCH_CHEESE = 4;
+            final int COST_OF_3_INCH_CHEESE = 6;
+
+            final int SHIPPING_COST_OF_1_INCH_CHEESE = 2;
+            final int SHIPPING_COST_OF_2_INCH_CHEESE = 2;
+            final int SHIPPING_COST_OF_3_INCH_CHEESE = 4;
+
+            final int FREE_SHIPPING_BREAKPOINT_FOR_1_INCH_CHEESE = 50;
+            final int FREE_SHIPPING_BREAKPOINT_FOR_2_INCH_CHEESE = 75;
+            final int FREE_SHIPPING_BREAKPOINT_FOR_3_INCH_CHEESE = 25;
+
+            final int HANDLING_CHARGE = 5;
+
+            int cheeseCost = 0;
+            int shippingCost = 0;
+
+            boolean isValidOrder = true;
+
+            if ((cheeseSize == 1) && (cheeseLength > FREE_SHIPPING_BREAKPOINT_FOR_1_INCH_CHEESE))
+            {
+                cheeseCost = (cheeseLength * COST_OF_1_INCH_CHEESE);
+                shippingCost = 0;
+            }
+            else if (cheeseSize == 1)
+            {
+                cheeseCost = (cheeseLength * COST_OF_1_INCH_CHEESE);
+                shippingCost = (cheeseLength * SHIPPING_COST_OF_1_INCH_CHEESE);
+            }
+            else if ((cheeseSize == 2) && (cheeseLength > FREE_SHIPPING_BREAKPOINT_FOR_2_INCH_CHEESE))
+            {
+                cheeseCost = (cheeseLength * COST_OF_2_INCH_CHEESE);
+                shippingCost = 0;
+            }
+            else if (cheeseSize == 2)
+            {
+                cheeseCost = (cheeseLength * COST_OF_2_INCH_CHEESE);
+                shippingCost = (cheeseLength * SHIPPING_COST_OF_2_INCH_CHEESE);
+            }
+            else if ((cheeseSize == 3) && (cheeseLength > FREE_SHIPPING_BREAKPOINT_FOR_3_INCH_CHEESE))
+            {
+                cheeseCost = (cheeseLength * COST_OF_3_INCH_CHEESE);
+                shippingCost = 0;
+            }
+            else if (cheeseSize == 3)
+            {
+                cheeseCost = (cheeseLength * COST_OF_3_INCH_CHEESE);
+                shippingCost = (cheeseLength * SHIPPING_COST_OF_3_INCH_CHEESE);
+            }
+            else
+            {
+                isValidOrder = false;
+            }
+
+            int totalCost = cheeseCost + shippingCost + HANDLING_CHARGE;
+
+            if (isValidOrder)
+            {
+                System.out.println("The total cost of this cheese is:  $" + cheeseCost);
+                System.out.println("The total shipping cost is:  $" + shippingCost);
+                System.out.println("The Handling Charge for this order is:  $" + HANDLING_CHARGE);
+                System.out.println("The total cost of this order is:  $" + totalCost);
+                System.out.println();
+            }
+            else
+            {
+                System.out.println("This order is too crazy!");
+            }
+        }
+    }
diff --git a/ch05/Else.java b/ch05/Else.java
new file mode 100644
index 0000000..a5c042b
--- /dev/null
+++ b/ch05/Else.java
@@ -0,0 +1,24 @@
+// Exercise 5-ES-1
+// Exercise 6
+
+public class Else
+{
+    public static void main(String[] args)
+    {
+        int hrs = 21;
+
+        if (hrs < 13)
+        {
+            System.out.println("Good morning:  " + hrs);
+        }
+        else if (hrs < 18)
+        {
+            System.out.println("Good afternoon:  " + hrs);
+        }
+        else
+        {
+            System.out.println("Good evening:  " + hrs);
+        }
+
+    }
+}
diff --git a/ch05/EmailOffer.java b/ch05/EmailOffer.java
new file mode 100644
index 0000000..533f8c7
--- /dev/null
+++ b/ch05/EmailOffer.java
@@ -0,0 +1,29 @@
+//Exercise 5-J.
+
+public class EmailOffer
+{
+    public static void main(String[] args)
+    {
+        determineEmailOffer("IA", 10);
+    }
+
+    public static void determineEmailOffer(String state, int currentSpeed)
+    {
+        if ((state.equals("IA")) && (currentSpeed < 30))
+        {
+            System.out.println("Congratulations!  You are eligible for a free HSI upgrade to 50M.");
+        }
+        else if ((state.equals("MO")) && (currentSpeed < 10))
+        {
+            System.out.println("Congratulations!  You are eligible for a free HSI upgrade to 20M.");
+        }
+        else if ((state.equals("MO")) && (currentSpeed < 25))
+        {
+            System.out.println("Congratulations!  You are eligible for a free HSI upgrade to 50M.");
+        }
+        else
+        {
+            System.out.println("We are sorry.  No HSI Upgrade is available at this time.");
+        }
+    }
+}
diff --git a/ch05/GreenCoffeeGrowersDiscount.java b/ch05/GreenCoffeeGrowersDiscount.java
new file mode 100644
index 0000000..9efd010
--- /dev/null
+++ b/ch05/GreenCoffeeGrowersDiscount.java
@@ -0,0 +1,33 @@
+//Exercise 5-I.
+
+public class GreenCoffeeGrowersDiscount
+{
+    public static void main(String[] args)
+    {
+        determineDiscount("Bicycle", 50);
+    }
+
+    public static void determineDiscount(String modeOfTravel, int distanceOfCommute)
+    {
+        if (distanceOfCommute < 21)
+        {
+            System.out.println("Congratulations!  You are eligible for a Free Coffee and a 30% Discount.");
+        }
+        else if ((modeOfTravel.equals("Bicycle")) && (distanceOfCommute > 20 && distanceOfCommute < 30))
+        {
+            System.out.println("Congratulations!  You are eligible for a 30% Discount.");
+        }
+        else if ((modeOfTravel.equals("Bicycle")) && (distanceOfCommute > 29 && distanceOfCommute < 50))
+        {
+            System.out.println("Congratulations!  You are eligible for a 20% Discount.");
+        }
+        else if ((modeOfTravel.equals("Bus")) && (distanceOfCommute > 34 && distanceOfCommute < 50))
+        {
+            System.out.println("Congratulations!  You are eligible for a 50% Discount.");
+        }
+        else
+        {
+            System.out.println("We are sorry.  You are not eligible for a discount at this time.");
+        }
+    }
+}
diff --git a/ch05/If.java b/ch05/If.java
new file mode 100644
index 0000000..a97aa44
--- /dev/null
+++ b/ch05/If.java
@@ -0,0 +1,29 @@
+// Exercise 5-ES-1
+// Exercise 5
+
+public class If
+{
+    public static void main(String[] args)
+    {
+        if (5>1)
+        {
+            System.out.println("Five is greater than one.");
+        }
+
+        System.out.println();
+
+        if (2<4)
+        {
+            System.out.println("Two is less than four.");
+            System.out.println("Test succeeded.");
+        }
+
+        System.out.println();
+
+        int num = 15;
+        if (((num > 5) && (num < 10)) || (num == 12))
+        {
+            System.out.println("Number is 6-9 inclusive, or 12");
+        }
+    }
+}
diff --git a/ch05/Logic.java b/ch05/Logic.java
new file mode 100644
index 0000000..17dac89
--- /dev/null
+++ b/ch05/Logic.java
@@ -0,0 +1,28 @@
+// Exercise 5-ES-1
+// Exercise 2
+
+public class Logic
+{
+    public static void main(String[] args)
+    {
+        boolean yes = true;
+        boolean no = false;
+
+        //Add these lines to test if both conditions are true.
+        System.out.println("Both YesYes True:  " + ( yes && yes));
+        System.out.println("Both YesNo True:  " + ( yes && no));
+
+        System.out.println();
+
+        //Add these lines to test if either condition is true.
+        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();
+
+        //Add two more lines to show an original and inverse value.
+        System.out.println("Original Yes Value:  " + ( yes ));
+        System.out.println("Inverse Yes Value:  " + ( !yes ));
+    }
+}
diff --git a/ch05/LogicMethods.java b/ch05/LogicMethods.java
new file mode 100644
index 0000000..dd29251
--- /dev/null
+++ b/ch05/LogicMethods.java
@@ -0,0 +1,86 @@
+//Exercises 5-A through 5-D.
+
+public class LogicMethods
+{
+    public static void main(String[] args)
+    {
+        //Exercise 5-A.
+        printIsLarge(4);
+        //Exercise 5-B.
+        printIsLargeOrSmall(47);
+        //Exercise 5-C.
+        printLargest(25, 9);
+        //Exercise 5-D
+        printLargestOdd(12, 12);
+    }
+
+    public static void printIsLarge(int number)
+    {
+        if (number > 99)
+        {
+            System.out.println("The number is large.");
+        }
+    }
+
+    public static void printIsLargeOrSmall(int number)
+    {
+        if (number > 99)
+        {
+            System.out.println("The number is large.");
+        }
+        else if (number < 10)
+        {
+            System.out.println("The number is small.");
+        }
+    }
+
+    public static void printLargest(int number1, int number2)
+    {
+        if (number1 == number2)
+        {
+            System.out.println("The numbers are equal.");
+        }
+        else if (number1 > number2)
+        {
+            System.out.println("The largest number is:  " + number1);
+        }
+        else
+        {
+            System.out.println("The largest number is:  " + number2);
+        }
+    }
+
+    public static void printLargestOdd(int x, int y)
+    {
+        boolean xIsOdd = (x % 2 == 1);
+        boolean xIsEven = (x % 2 == 0);
+        boolean yIsOdd = (y % 2 == 1);
+        boolean yIsEven = (y % 2 == 0);
+
+        if ((xIsEven) && (yIsEven))
+        {
+            System.out.println("Neither number is ODD.");
+        }
+        else if ((xIsEven) && (yIsOdd))
+        {
+            System.out.println("The largest ODD number is:  " + y);
+        }
+        else if ((xIsOdd) && (yIsEven))
+        {
+            System.out.println("The largest ODD number is:  " + x);
+        }
+        else if ((x == y) && (xIsOdd))
+        {
+            System.out.println("Two ODDs make an EVEN:  " + (x + y));
+        }
+        else if (x > y)
+        {
+            System.out.println("The largest ODD number is:  " + x);
+        }
+        else if (y > x)
+        {
+            System.out.println("The largest ODD number is:  " + y);
+        }
+    }
+}
+
diff --git a/ch05/Precedence.java b/ch05/Precedence.java
new file mode 100644
index 0000000..4c19006
--- /dev/null
+++ b/ch05/Precedence.java
@@ -0,0 +1,17 @@
+// Exercise 5-ES-1
+// Exercise 4
+
+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..3651cb4
--- /dev/null
+++ b/ch05/Switch.java
@@ -0,0 +1,20 @@
+// Exercise 5-ES-1
+// Exercise 7
+
+public class Switch
+{
+    public static void main(String[] args)
+    {
+        int month = 2;
+        int year = 2018;
+        int 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/ch05/SwitchExample.java b/ch05/SwitchExample.java
new file mode 100644
index 0000000..d8df890
--- /dev/null
+++ b/ch05/SwitchExample.java
@@ -0,0 +1,69 @@
+//Exercise 5-E.
+//Exercise 5-F.
+
+public class SwitchExample
+{
+    public static void main(String[] args)
+    {
+       lastNameWinner("Lazenby");
+       System.out.println();
+       dayOfWeek(7);
+    }
+
+    public static void lastNameWinner(String name)
+    {
+        switch(name)
+        {
+            case "Smith" : case "Jones" :
+                System.out.println("Congratulations, Grand Winner.");
+            break;
+
+            case "Lazenby" :
+            System.out.println("Hey, he owes me dinner!");
+            break;
+
+            default:
+            System.out.println("Sorry, you are not a winner.");
+        }
+    }
+
+
+
+    public static void dayOfWeek(int day)
+    {
+        switch(day)
+        {
+            case 1 :
+                System.out.println("Sunday");
+            break;
+
+            case 2 :
+                System.out.println("Monday");
+            break;
+
+            case 3 :
+                System.out.println("Tuesday");
+                break;
+
+            case 4 :
+                System.out.println("Wednesday");
+                break;
+
+            case 5 :
+                System.out.println("Thursday");
+                break;
+
+            case 6 :
+                System.out.println("Friday");
+                break;
+
+            case 7 :
+                System.out.println("Saturday");
+                break;
+
+            default:
+                System.out.println("Invalid entry:  " + day);
+        }
+    }
+
+}
diff --git a/ch05/TicketNumber.java b/ch05/TicketNumber.java
new file mode 100644
index 0000000..d350725
--- /dev/null
+++ b/ch05/TicketNumber.java
@@ -0,0 +1,32 @@
+//Exercise 5-H.
+
+import java.util.Scanner;
+
+public class TicketNumber
+{
+    public static void main(String[] args)
+    {
+        Scanner in = new Scanner(System.in);
+        int ticketNumber;
+
+        System.out.print("What is the Ticket Number?  ");
+        ticketNumber = in.nextInt();
+        System.out.println("This is the Ticket Number you entered:  " + ticketNumber);
+
+        int ticketPrefix = ticketNumber / 10;
+        int lastDigit = ticketNumber % 10;
+
+        System.out.println("The Ticket Prefix is:  " + ticketPrefix);
+        System.out.println("The last digit of the Ticket is:  " + lastDigit);
+
+        boolean isValid = ((ticketPrefix % 7) == lastDigit);
+        if (isValid)
+        {
+            System.out.println("This is a good number.");
+        }
+        else
+        {
+            System.out.println("This is a bad number.");
+        }
+    }
+}