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Program 1
 

class A {
  
  public void op(){
    System.out.println("op i klassen A");
  }

}

class B extends A {

  public void op(){
    System.out.println("op i klassen B");
  }

}


class StaticDynamicBinding {

  public static void main (String[] args){

    A x = new A();
    B y = new B();

    x = y; 

    x.op();

  }
}