public class Animal {
  private String name;   // The human name for the animal, not some secret animal name.
  private String sound;  // What sound does it vocalize?


  /** Constructor.
   * @param _name the name of the animal.
   * @param _sound what sound the animal makes.   
   */
  Animal( String _name, String _sound ) {
    this.name  = _name;
    this.sound = _sound;
    }

  /** When the animal wants to bug a human, it says...
   * @return The sound of the animal, bugging its owner.
   */
  public String speak() {
    return this.sound + ", " + this.sound + ".";
    }

  public String getName()  { return this.name; }
  public String getSound() { return this.sound; }


  /** A series of tests, constructing subclasses of Animal defined below.
   */
  public static void test1() {
    System.out.println( "Creating objects and calling methods:" );
    System.out.println( new Cat("Bartok").speak() );
    //System.out.println( new Python().speak() );
    }

    


  }