Updates

Author: Programmer-RD-AI

Diff for: Animal.java

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+public class Animal {
+    void speak(){
+        System.out.println("The animal speaks");
+    }
+}

Diff for: Anonymous Inner Classes/.idea/.gitignore

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+public class Greeting {
+    public void Welcome(){
+        System.out.println("hELLO");
+    }
+}

Diff for: Anonymous Inner Classes/.idea/Anonymous Inner Classes.iml

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+public class Main {
+    public static void Main(String[] args){
+        Greeting greeting = new Greeting(){
+            @Override
+            public void Welcome(){
+                System.out.println("Yo");
+            }
+        };
+        Greeting greeting2 = new Greeting();
+        greeting2.Welcome();
+        greeting.Welcome();
+        return;
+    }
+}

Diff for: Anonymous Inner Classes/.idea/misc.xml

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+public class Bicycle extends Vehicle{
+}

Diff for: Anonymous Inner Classes/.idea/modules.xml

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+public class Car1 extends Vehicle1{
+    @Override
+    void go(){
+        System.out.println("the driver is driving the car");
+        return;
+    }
+}

Diff for: Anonymous Inner Classes/.idea/vcs.xml

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+public class Car4 extends Vehicle{
+    Car4(){
+        this.typeOfVehicle = "Car";
+    }
+}

Diff for: Anonymous Inner Classes/Greeting.java

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+public class Car5 {
+    private String make;
+    private String model;
+    private int year;
+
+    Car5(String make, String model, int year){
+        this.setMake(make);
+        this.setModel(model);
+        this.setYear(year);
+    }
+
+    Car5(Car5 x){
+        this.copy(x);
+    }
+
+    public int getYear() {
+        return year;
+    }
+
+    public String getMake() {
+        return make;
+    }
+
+    public String getModel() {
+        return model;
+    }
+
+    public void setMake(String make) {
+        this.make = make;
+    }
+
+    public void setModel(String model) {
+        this.model = model;
+    }
+
+    public void setYear(int year) {
+        this.year = year;
+    }
+
+    public void copy(Car5 x){
+        this.setMake(x.getMake());
+        this.setModel(x.getModel());
+        this.setYear(x.getYear());
+    }
+}

Diff for: Anonymous Inner Classes/Main.java

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+public class AgeException extends Exception{
+    AgeException(String message){
+        super(message);
+    }
+}

Diff for: Bicycle.java

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+import java.util.Scanner;
+
+public class Main {
+    public static void main(String[] args){
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Enter your age: ");
+        int age = scan.nextInt();
+        try{
+            checkAge(age);
+        }
+        catch (Exception e){
+            System.out.println(e.getMessage());
+        }
+        return;
+    }
+
+    static void checkAge(int age) throws AgeException{
+        if (age<18){
+            throw new AgeException("under 18");
+        }
+        else {
+            System.out.println("signed up!");
+        }
+    }
+}

Diff for: Car1.java

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+public class Dog extends Animal{
+    @Override
+    void speak(){
+        System.out.println("Baw baw");
+    }
+}

Diff for: Car4.java

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+public class Animal {
+    public void speak(){
+        System.out.println("brr");
+    }
+}

Diff for: Car5.java

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+public class Cat extends Animal{
+    @Override
+    public void speak(){
+        System.out.println("meow?");
+    }
+}

Diff for: Custom Exceptions/.idea/.gitignore

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+public class Dog extends Animal{
+    @Override
+    public void speak(){
+        System.out.println("bak bak");
+    }
+}

Diff for: Custom Exceptions/.idea/Custom Exceptions.iml

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+import java.util.Scanner;
+
+public class Main {
+    public static void main(String[] args){
+        // Polymorphism = many shapes/forms
+        // dynamic = after compialation (during runtime)
+        // ex: A corvette is a: corvette and a car and a vehicle yk?
+
+        Scanner scanner = new Scanner(System.in);
+        Animal animal;
+
+        System.out.println("What animal do you want?");
+        System.out.print("(1 = Dog, 2 = Cat): ");
+        int choice = scanner.nextInt();
+
+        if (choice == 1){
+            animal = new Dog();
+        }
+        else if (choice == 2){
+            animal = new Cat();
+        }
+        else {
+            animal = new Animal();
+            System.out.println("invalid choice");
+        }
+        animal.speak();
+    }
+}