Pet PolyMorphism Example

PetPolyMorphism.java

// Polymorphism Example
// A.C. Silvestri
// Java Programming
// 07/20/2020

public class PetPolyMorphism {
	public static void main(String[] args) 
	{
		Pet pets[] = new Pet[10];
				
		for (int i = 0; i < pets.length; i++) {
			switch ((int)(Math.random() * 10)) {
			case 0:
				pets[i] = new BigBird();
				break;
			
			case 1:
			case 2:
				pets[i] = new Dog();
				break;

			case 4:
				pets[i] = new Cat();
				break;
				
			case 5:
				pets[i] = new Snake();
				break;
			
			default:
				pets[i] = new Bird();
				break;
			}
		}

		for (int i = 0; i < pets.length; i++) {
			pets[i].method(new BigBird());
			// System.out.println("I am a " + pets[i].whatAmI() + " and I " + pets[i].speak());
			// if (pets[i] instanceof Dog) {
			//	 Dog d = (Dog)pets[i];
			//	 d.bark();
			// }
			
		}
		
	}
}

abstract class Pet {
	abstract String whatAmI();
	abstract String speak();

	void method(Pet b) {
		System.out.println("Pet.PetMethod");
	}

	void method(Bird b) {
		System.out.println("Pet.BirdMethod");
	}
}

class Snake extends Pet {
	String whatAmI() {
		return "Snake";
	}

	String speak() {
		return "Hiss";
	}
}

class Dog extends Pet {
	String whatAmI() {
		return "Dog";
	}

	String speak() {
		return "Woof";
	}
	
	void bark() {
		System.out.println("Barking Dog");
	}
}


class Cat extends Pet {
	String whatAmI() {
		return "Cat";
	}

	String speak() {
		return "Meow";
	}
}


class Bird extends Pet {
	String whatAmI() {
		return "Bird";
	}

	String speak() {
		return "Tweet";
	}

	void method(Object o) {
		System.out.println("Bird.Method");
	}
}

class BigBird extends Bird {
	void method(Pet p) {
		System.out.println("BigBird.PetMethod");
	}
	
	void method(Bird o) {
		System.out.println("BigBird.BirdMethod");
	}
}