class Super_class{

 

   int num = 20;

  

   //display method of superclass

   public void display(){  

      System.out.println("This is the display method of superclass");

   }

 

}

 

public class Sub_class extends Super_class {

 

   int num = 10;

  

   //display method of sub class

   public void display(){

      System.out.println("This is the display method of subclass");

   }

  

   public void my_method(){

      

      //Instantiating subclass

      Sub_class sub = new Sub_class();

      

      //Invoking the display() method of sub class

      sub.display();

      

      //Invoking the display() method of superclass

      super.display();

      

      //printing the value of variable num of subclass

      System.out.println("value of the variable named num in sub class:"+ sub.num);

           

      //printing the value of variable num of superclass

      System.out.println("value of the variable named num in super class:"+ super.num);    

   }

  

   public static void main(String args[]){

      Sub_class obj = new Sub_class();

      obj.my_method();

     

   }

}