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section7/BankAccount.java

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+
+public class BankAccount {
+    private String owner;
+    private int balance;
+
+    public BankAccount(String owner) {
+        this(owner, 0);
+    }//end ctor
+
+    public BankAccount(String owner, int balance) {
+        this.owner = owner;
+        this.balance = balance;
+    }//end ctor
+
+    public void deposit(int amount) {
+        if(amount > 0) {
+            balance += amount;  //balance = balance + amount;
+        }
+        else {
+            System.out.println("Amount to deposit must be greater than 0");
+        }//end if-else
+    }//end deposit
+
+    public void withdraw(int amount) {
+        if(amount > 0 && amount <= balance) {
+            balance -= amount;  //balance = balance - amount;
+        }
+        else {
+            System.out.println("The amount to deposit must be greater than 0 " +
+                    "and less than your balance.");
+        }
+    }//end withdraw
+
+    public String getOwner() {
+        return owner;
+    }
+
+    public int getBalance() {
+        return balance;
+    }
+}//end BankAccount

section7/BankAccountDemo.java

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+public class BankAccountDemo {
+    public static void main(String[] args) {
+        BankAccount myAccount = new BankAccount("John Baugh", 5000);
+        BankAccount bobsAccount = new BankAccount("Bob Robinson");
+
+        bobsAccount.deposit(500);
+        System.out.println("owner: " + bobsAccount.getOwner());
+        System.out.println("blance: " + bobsAccount.getBalance());
+
+        bobsAccount.withdraw(1000);  //warning!
+        System.out.println("owner: " + bobsAccount.getOwner());
+        System.out.println("balance: " + bobsAccount.getBalance());
+        System.out.println();
+
+        System.out.println("owner: " + myAccount.getOwner());
+        System.out.println("balance: " + myAccount.getBalance());
+        System.out.println();
+
+        System.out.println("Deposit 1000?");
+        myAccount.deposit(1000);
+
+        System.out.println("owner: " + myAccount.getOwner());
+        System.out.println("balance: " + myAccount.getBalance());
+    }//end main
+}//end BankAccountDemo

section7/Book.java

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+
+public class Book {
+    private String author;
+    private String title;
+    private String genre;
+    private int numPages;
+
+    public Book(String author, String title, String genre, int numPages) {
+        this.author = author;
+        this.title = title;
+        this.genre = genre;
+        this.numPages = numPages;
+    }//end ctor
+
+    public String getAuthor() {
+        return author;
+    }
+
+    public String getTitle() {
+        return title;
+    }
+
+    public String getGenre() {
+        return genre;
+    }
+
+    public int getNumPages() {
+        return numPages;
+    }
+
+    public void printBookDetails() {
+        System.out.println(title);
+        System.out.println("by " + author);
+        System.out.println("has " + numPages +
+                " pages, and its genre is " + genre);
+        System.out.println();
+    }//end printBookDetails
+}//end Book class

section7/BookDemo.java

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+
+public class BookDemo {
+    public static void main(String[] args) {
+        Book gameOfThrones = new Book("George Martin",
+                "Game of Thrones", "Fantasy", 864);
+
+        Book mathBook = new Book("James Stewart",
+                "Calculus", "Math", 1392);
+
+        Book javaBook = new Book("Joel Murach",
+                "Murach's Java Programming", "Programming", 800);
+
+        gameOfThrones.printBookDetails();
+        mathBook.printBookDetails();
+        javaBook.printBookDetails();
+    }//end main
+
+//    public static void printBookDetails(Book book) {
+//        System.out.println(book.getTitle());
+//        System.out.println("by " + book.getAuthor());
+//        System.out.println("has " + book.getNumPages() +
+//                " pages, and its genre is " + book.getGenre());
+//
+//        System.out.println();
+//    }//end printBookDetails
+}//end BookDemo class

section7/Circle.java

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+
+public class Circle {
+    private double radius;
+
+    public Circle() {
+        this(1.0);
+    }//no arg ctor
+
+    public Circle(double radius) {
+        this.radius = radius;
+    }//end ctor
+
+    public double getRadius() {
+        return radius;
+    }//end getRadius
+
+    public void setRadius(double radius) {
+        this.radius = radius;
+    }//end setRadius
+
+    public double circumference() {
+        return 2 * Math.PI * radius;
+    }//end circumference
+
+    public double area() {
+        return Math.PI * Math.pow(radius, 2);
+    }//end area
+}//end Circle class
+
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section7/CircleDemo.java

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+
+public class CircleDemo {
+  public static void main(String[] args) {
+    Circle unitCircle = new Circle();
+    Circle myCircle = new Circle(5);
+    Circle yourCircle = new Circle(12.75);
+
+    printCircleData(unitCircle);
+    printCircleData(myCircle);
+    printCircleData(yourCircle);
+  }//end main
+
+    public static void printCircleData(Circle circle) {
+      System.out.println("r = " + circle.getRadius());
+      System.out.println("C = " +
+              String.format("%.2f",circle.circumference())
+      );
+      System.out.println("A = " +
+              String.format("%.2f", circle.area())
+      );
+      System.out.println();
+    }//end printCircleData
+}//end CircleDemo

section7/House.java

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+
+
+public class House {
+    private int numStories;
+    private int numWindows;
+    private String color;
+
+    //no-arg constructor
+    public House() {
+        numStories = 1;
+        numWindows = 4;
+        color = "gray";
+    }//end ctor
+
+    //parameterized ctor
+    public House(int numStories, int numWindows, String color) {
+        this.numStories = numStories;
+        this.numWindows = numWindows;
+        this.color = color;
+    }//end param ctor
+
+
+    public int getNumStories() {
+        return numStories;
+    }
+
+    public void setNumStories(int numStories) {
+        this.numStories = numStories;
+
+        numStories = numStories;
+    }
+
+    public int getNumWindows() {
+        return numWindows;
+    }
+
+    public void setNumWindows(int numWindows) {
+        this.numWindows = numWindows;
+    }
+
+    public String getColor() {
+        return color;
+    }
+
+    public void setColor(String color) {
+        this.color = color;
+    }
+}//end House

section7/HouseDemo.java

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+public class HouseDemo {
+    public static void main(String[] args) {
+        House myHouse = new House();
+        House yourHouse = new House(3, 10, "blue");
+
+        myHouse.setNumStories(2);
+        myHouse.setNumWindows(6);
+        myHouse.setColor("red");
+
+        printHouseData(myHouse);
+        System.out.println();
+        printHouseData(yourHouse);
+//        yourHouse.setNumStories(3);
+//        yourHouse.setNumWindows(10);
+//        yourHouse.setColor("blue");
+
+//        System.out.println("My house is " + myHouse.getColor() +
+//                " and has " + myHouse.getNumStories() + " stories and " +
+//                myHouse.getNumWindows() + " windows.");
+//        System.out.println();
+//
+//        System.out.println("Your house is " + yourHouse.getColor() +
+//                " and has " + yourHouse.getNumStories() + " stories and " +
+//                yourHouse.getNumWindows() + " windows.");
+    }//end main
+
+    public static void printHouseData(House house) {
+        System.out.println("The house is " + house.getColor() +
+                "\nand has " + house.getNumStories() + " stories and " +
+                "\n" + house.getNumWindows() + " windows.");
+    }//end printHouseData
+}//end HouseDemo

section7/IceCream.java

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+import java.util.ArrayList;
+
+public class IceCream {
+    private String name;
+    private int cost;
+    private int numScoops;
+    private ArrayList<String> toppings;
+
+    public IceCream(String name, int cost, int numScoops) {
+        this.name = name;
+        this.cost = cost;
+        this.numScoops = numScoops;
+        this.toppings = new ArrayList<>();
+    }//end IceCream ctor
+
+    public void addTopping(String topping) {
+        toppings.add(topping);
+    }//end addTopping
+
+    public String getName() {
+        return name;
+    }
+
+    public int getCost() {
+        return cost;
+    }
+
+    public int getNumScoops() {
+        return numScoops;
+    }
+
+    public void printToppings() {
+        for(String topping : toppings) {
+            System.out.println("\t" + topping);
+        }//end for
+    }//end printToppings
+}//end class
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section7/IceCreamDemo.java

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+public class IceCreamDemo {
+    public static void main(String[] args) {
+        IceCream myIC = new IceCream("Chocolate", 3, 2);
+        IceCream yourIC = new IceCream("Strawberry", 2, 1);
+
+        myIC.addTopping("nuts");
+        myIC.addTopping("cherries");
+
+        yourIC.addTopping("sprinkles");
+
+        printIC(myIC);
+        printIC(yourIC);
+
+    }//end main
+
+    public static void printIC(IceCream icecream) {
+        System.out.println(icecream.getName());
+        System.out.println("Cost: $" + icecream.getCost());
+        System.out.println("Topped with:");
+        icecream.printToppings();
+        System.out.println();  //extra space
+    }//end printIC
+}//end IceCreamDemo