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package chapter12;

// MethodOverrideDemo1.java

/* In this example Pet variable behaves polymorphic because it can be either Cat or Dog. The method makeSound() overridden in sub class Dog and Cat. */

import java.util.ArrayList;

import java.util.List;

abstract class Pet{

public abstract void makeSound();

}

class Cat extends Pet{

@Override

public void makeSound() {

System.out.println("Cat makes Meow sound");

}

}

class Dog extends Pet{

@Override

public void makeSound() {

System.out.println("Dog makes Woof sound");

}

}

public class MethodOverrideDemo1{

public static void main(String args[]) {

//Now Pet will show How Method Overriding works in Java

List<Pet> pets = new ArrayList<Pet>();

pets.add(new Cat());

pets.add(new Dog());

//pet variable which is type of Pet behave different based

//upon whether pet is Cat or Dog

for(Pet pet : pets){

pet.makeSound();

}

}

}