Lecture 7 - slide 19 : 41

class Triple extends Pair {

  protected Object part3;

  public Triple(Object part1, Object part2, Object part3){
    super(part1,part2);
    this.part3 = part3;
  }

  public Object part3(){
    return(part3);
  }

  public void setPart3(Object newPart){
   part3 = newPart;
  }

  public String toString(){
    return("Triple: " + part1.toString() + 
           ", " + part2.toString() +
           ", " + part3.toString());
  }

}