Polymorphism in Java - Types & Examples

What is Polymorphism?

Polymorphism means "many forms", and it occurs when we have many classes that are related to each other by inheritance.

It allows us to perform a single action in different ways.

Types:

Compile-time: Method Overloading.

Runtime: Method Overriding.

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"); }
}