// Parent class A1

class A1 {

// Method in class A1

public void show(){

System.out.println("in A");

}

}

// Child class B

class B extends A1 {

// Overriding method in class B

public void show(){

System.out.println("in B");

}

}

// Child class C

class C extends A1 {

// Overriding method in class C

public void show(){

System.out.println("in C");

}

}

public class OverridingMethod {

public static void main(String[] args) {

// Runtime polymorphism - Creating object of class B using reference of class A1

A1 obj = new B();

// Method invocation - Resolved at runtime

obj.show(); // which show method to call will be decided at runtime only

// Dynamic method dispatch - Changing the reference to class C

obj = new C();

// Method invocation - Changes with the object to which the reference is pointing

obj.show(); // dynamic method dispatch [ In order to achieve this we need Runtime polymorphism

}

}