Polymorphism in Java

Polymorphism allows methods to do different things based on the object that it is acting upon.

Source Code

class Animal {
    public void animalSound() {
        System.out.println("The animal makes a sound");
    }
}
class Pig extends Animal {
    public void animalSound() {
        System.out.println("The pig says: wee wee");
    }
}
class Dog extends Animal {
    public void animalSound() {
        System.out.println("The dog says: bow wow");
    }
}
public class Main {
    public static void main(String[] args) {
        Animal myAnimal = new Animal();  // Create a Animal object
        Animal myPig = new Pig();  // Create a Pig object
        Animal myDog = new Dog();  // Create a Dog object
        myAnimal.animalSound();
        myPig.animalSound();
        myDog.animalSound();
    }
}