public class Sheep extends Animal
  {
    public void makeNoise()
    {
       System.out.println("I am a sheep: baaa");
    }
 
    public void eat()
    {
       System.out.println("I am a sheep. I eat grass");
    } 
 
    // My testing program for class Sheep
    public static void main(String[] args)
    {
       Sheep sh = new Sheep(); // I am creating an object of subclass, Sheep
       sh.food = "grass";      // I am accessing its inherited instance variable.
       sh.hunger = 5;          // I am accessing its inherited instance variable.
       sh.locationX = 100;     // I am accessing its inherited instance variable.
       sh.locationY = 105;     // I am accessing its inherited instance variable.
       sh.eat();               // I am accessing its overriden method.
       sh.makeNoise();         // I am accessing its overriden method.
       sh.sleep();             // I am accessing its inherited method.
       sh.roam();              // I am accessing its inherited method.
    }
}