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section3/ContinueBreak.java

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+
+
+public class ContinueBreak {
+    public static void main(String[] args) {
+        int count = 0;
+
+        while(count < 10) {
+
+            if(count == 5) {
+                count++;
+                break;
+            }
+            System.out.print(count + "\t");
+
+            count++;
+        }//end while
+    }//end main
+}

section3/ControlStatementsIntro.java

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+
+public class ControlStatementsIntro {
+    public static void main(String[] args) {
+        int age = 19;
+
+        if(age >= 16) {
+            System.out.println("You can drive!");
+        }
+        else {
+            System.out.println("You cannot drive yet!");
+        }//end if-else
+
+        System.out.println();  //add some newline space
+
+        for(int i = 1; i <= age; i++) {
+            System.out.println("Happy Birthday " + i);
+        }//end for
+
+    }//end main
+}

section3/DiceSimulation.java

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+import java.util.Random;
+
+public class DiceSimulation {
+    public static void main(String[] args) {
+        Random random = new Random();
+
+        int diceVal;
+
+        for(int i = 0; i < 10; i++) {
+            diceVal = random.nextInt(6) + 1;
+            System.out.println(diceVal);
+        }//end for
+    }//end main
+}

section3/DivisibleByThree.java

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+import java.util.Scanner;
+
+public class DivisibleByThree {
+    public static void main(String[] args) {
+        Scanner keyboard = new Scanner(System.in);
+        int input;
+
+        System.out.println("Please enter your integer");
+        input = keyboard.nextInt();
+
+        if(input % 3 == 0) {
+            System.out.println(input + " is divisible by 3");
+        }
+        else {
+            System.out.println(input + " is NOT divisible by 3");
+        }
+
+    }//end main
+}

section3/EvenOnly.java

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+
+public class EvenOnly {
+    public static void main(String[] args) {
+        int count = 0;
+
+        while(count < 10) {
+
+            if(count % 2 != 0) {
+                count++;
+                continue;
+            }
+            System.out.println(count);
+
+            count++;
+        }//end while
+    }//end main
+}

section3/Fraternity.java

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+import java.util.Scanner;
+
+public class Fraternity {
+    public static void main(String[] args) {
+        Scanner keyboard = new Scanner(System.in);
+        int age;
+        char gender;
+
+        System.out.print("Enter your age:\t");
+        age = keyboard.nextInt();
+
+        System.out.print("Enter your gender:\t");
+        gender = keyboard.next().charAt(0);
+
+        if(age >= 19 && gender == 'M') {
+            System.out.println("You can join the fraternity.");
+        }
+        else {
+            System.out.println("Sorry, you cannot join the fraternity.");
+        }//end if-else
+    }//end main
+}

section3/GradeFun.java

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+import java.util.Scanner;
+
+public class GradeFun {
+    public static void main(String[] args) {
+        Scanner keyboard = new Scanner(System.in);
+
+        char grade;
+
+        System.out.println("Enter a grade");
+        grade = keyboard.next().charAt(0);
+
+        switch(grade) {
+            case 'A':
+            case 'a':
+                System.out.println("Great job!");
+                break;
+            case 'B':
+            case 'b':
+                System.out.println("Good job.");
+                break;
+            case 'C':
+            case 'c':
+                System.out.println("You can do better.");
+                break;
+            case 'D':
+            case 'd':
+                System.out.println("You're getting pretty close to failing");
+                break;
+            case 'F':
+            case 'f':
+                System.out.println("You are failing the course!");
+                break;
+            default:
+                System.out.println("You have entered an invalid grade.");
+        }//end switch
+
+
+
+    }//end main
+}

section3/Proj3_1_LearningPackages.java

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+import java.util.Scanner;
+
+public class Proj3_1_LearningPackages {
+    public static void main(String[] args) {
+        Scanner keyboard = new Scanner(System.in);
+        int packageNumber;
+        int howManyCourses;
+        int baseCost;
+        int costPerCourse;
+        int numIncluded;
+        int totalCost;
+
+        System.out.println("Which of the packages do you want? 1,2, or 3?");
+        packageNumber = keyboard.nextInt();
+
+        System.out.println("How many courses did you enroll in this month?");
+        howManyCourses = keyboard.nextInt();
+
+        if(packageNumber == 1) {
+            baseCost = 10;
+            costPerCourse = 6;
+            numIncluded = 2;
+        }
+        else if(packageNumber == 2) {
+            baseCost = 12;
+            costPerCourse = 4;
+            numIncluded = 4;
+        }
+        else {
+            //package 3
+            baseCost = 15;
+            costPerCourse = 3;
+            numIncluded = 6;
+        }//end if-else chain
+
+        //calculate total cost
+        if(howManyCourses > numIncluded) {
+            totalCost = baseCost + (howManyCourses - numIncluded) * costPerCourse;
+        }
+        else {
+            totalCost = baseCost;
+        }
+
+        System.out.println("Total cost is $" + totalCost);
+
+    }//end main
+}

section3/Proj3_3_GuessTheNumber.java

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+import java.util.Random;
+import java.util.Scanner;
+
+public class Proj3_3_GuessTheNumber {
+
+    public static void main(String[] args) {
+        int ourGuess;
+        int computerNumber;
+        int guessCount = 0;
+        Random random = new Random();
+        boolean guessedNumber = false;
+        Scanner keyboard = new Scanner(System.in);
+
+        computerNumber = random.nextInt(100) + 1;
+
+        while(!guessedNumber) {
+            System.out.println("Enter your integer guess");
+            ourGuess = keyboard.nextInt();
+            guessCount++;
+
+            if(ourGuess >= 1 && ourGuess <= 100) {
+                if(ourGuess == computerNumber) {
+                    System.out.println("Congratulations!  You guessed the number in " +
+                            guessCount + " guesses!  Thanks for playing!");
+
+                    guessedNumber = true;
+                }
+                else if(ourGuess > computerNumber) {
+                    System.out.println("Your guess was too high!");
+                }
+                else  {  //too low!
+                    System.out.println("Your guess was too low!");
+                }
+            }
+            else {
+                //invalid guess
+                System.out.println("That was a wasted guess!  You must pick a number between 1 and 100, inclusive!");
+            }
+
+        }//end while
+
+    }//end main
+}

section3/RandomFun.java

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+import java.util.Random;
+
+public class RandomFun {
+    public static void main(String[] args) {
+        Random random = new Random();
+        int myRandomNumber;
+
+        myRandomNumber = random.nextInt();
+        System.out.println("number is:\t" + myRandomNumber);
+
+        myRandomNumber = random.nextInt(1000);  //0 - 999
+        System.out.println("0 through 999?\t" + myRandomNumber);
+
+        //shifting
+        myRandomNumber = random.nextInt(1000) + 1;  //1 - 1000
+        System.out.println("1 through 1000?\t" + myRandomNumber);
+
+    }//end main
+}

section3/RepetitionFun.java

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+import java.util.Scanner;
+
+public class RepetitionFun {
+    public static void main(String[] args) {
+
+        Scanner keyboard = new Scanner(System.in);
+        int input;
+
+        //priming read
+        System.out.println("Enter a non-negative integer");
+        System.out.println("Or negative to exit");
+        input = keyboard.nextInt();
+
+        while(input >= 0) {
+            System.out.println(input);
+
+            System.out.println("Enter a non-negative integer");
+            System.out.println("Or negative to exit");
+            input = keyboard.nextInt();
+        }//end while
+
+        System.out.println("Done!");
+
+
+
+//        int count = 0;
+//
+//        while(count < 10) {
+//            System.out.println(count);
+//            count++;
+//        }//end while
+
+//        int count2 = 15;
+//
+//        do {
+//            System.out.println(count2);
+//            count2++;
+//        }
+//        while(count2 < 10);
+
+//        for(int i = 0; i < 10; i++) {
+//            System.out.println(i);
+//        }//end for
+
+
+
+    }//end main
+}

section3/SelectionFun.java

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+import java.util.Scanner;
+
+public class SelectionFun {
+    public static void main(String[] args) {
+        int age;
+        Scanner keyboard = new Scanner(System.in);
+
+        System.out.println("Welcome to the Pub and Grille.");
+
+        System.out.println("Please enter your age");
+        age = keyboard.nextInt();
+
+        if(age >= 21) {
+            System.out.println("Here, have a beer.");
+        }
+        else if(age >= 16) {
+            System.out.println("Here have a Coke!");
+            System.out.println("At least you can drive!");
+        }
+        else {
+            System.out.println("Here have a Coke!");
+        }
+
+        System.out.println("Thanks for coming to the Pub and Grille!");
+
+    }
+}

section3/SumFun.java

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+import java.util.Scanner;
+
+public class SumFun {
+    public static void main(String[] args) {
+        Scanner keyboard = new Scanner(System.in);
+        int sum = 0;
+        int input;
+
+        //priming read
+        System.out.println("Enter non-negative to add to sum");
+        System.out.println("Enter a negative to exit!");
+        input = keyboard.nextInt();
+
+        while(input >= 0) {
+            sum += input;  //sum = sum + input;
+            System.out.println("Enter non-negative to add to sum");
+            System.out.println("Enter a negative to exit!");
+            input = keyboard.nextInt();
+        }//end while
+
+        System.out.println("Sum is " + sum);
+
+
+    }//end main
+}