/* The purpose of this class is to provide a
 * honk implementation once, since it is essentially
 * the same in every implementation.
 * Note that because this is an abstract class, it
 * cannot be instantiated with 'new'.
 */
abstract class AbstractHonkable implements Honkable {
  protected String honkTxt;
    
  public String honk(int n) {
    String s = "";
    for (int i = 0; i < n; i++) {
      s += honkTxt;
    }
    return s;
  }
}