Pr2a.java

class A {

  void show() {
    System.out.println("Base Class");
  }
}

class B extends A {

  @Override
  void show() {
    System.out.println("Derived Class");
  }
}

class Pr2a {

  public static void main(String args[]) {
    A obj = new A();
    obj.show();
    B obj1 = new B();
    obj1.show();
  }
}