public class Time implements Cloneable, Comparable {

  int hours, minutes, seconds;

  public Time (int hr, int min, int sec) {
    hours = hr;
    minutes = min;
    seconds = sec;
  }

  public Object clone() {
    Time dup;

    try {
      dup = (Time) super.clone();
    }
    catch (CloneNotSupportedException e) {
      return null;
    }

    return dup;
  }

  public int compareTo(Object otherTime) {
    int delta;
    Time t = (Time) otherTime;

    delta = hours - t.hours;
    if (delta != 0)
      return delta;

    delta = minutes - t.minutes;
    if ( delta != 0)
      return delta;

    return seconds - t.seconds;
  }

  public boolean equals(Object otherTime) {
    Time t = (Time) otherTime;

    return hours == t.hours && minutes == t.minutes
           && seconds == t.seconds;
  }

  public String toString() {
    return String.format("%02d:%02d:%02d", hours,
           minutes, seconds);
  }
}