Adding the Interface

Adding the Interface

The child class Food extends the parent class. It uses super to use the parent's constructor and the parent's display method.

class Food extends Goods
{
  double calories;

  Food( String des, double pr, double cal)
  {
    super( des, pr );
    calories = cal ;
  }

  void display()
  {
    super.display( );
    System.out.println( "calories: " + calories );
  }
}