Abstract

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package pkgabstract;

/**
 *
 * @author Student
 */
abstract class Animal {
   abstract void sound();

}

class Dog extends Animal {
   @Override
   public void sound() {
      System.out.println("Ghug Ghug");
   }
}

class Cat extends Animal {
   @Override
   public void sound() {
      System.out.println("Meow ");
   }
}



public class Abstract {

    /**
     * @param args the command line arguments
     */
    public static void main(String[] args) {
        // TODO code application logic here

        Dog d1 = new Dog();
      d1.sound();

      Cat c1 = new Cat();
      c1.sound();
    }

}