public class Time1
{
   private int hour; //0-23
   private int minute; //0-59
   private int second; //0-59

   public void setTime(int h, int m, int s) {
       if ((h>=0&&h<24)&&(m>=0&&m<60)&&(s>=0&&s<60))
       {
           hour = h;
           minute = m;
           second = s;
       }
       else
           throw new IllegalArgumentException("hour, minute and/or second was out of range");
   }
   public String toUniversalString() {
       return String.format("%02d:%02d:%02d", hour, minute, second);
   }
   public String toString() {
       return String.format("%02d:%02d:%02d %s", ((hour==0||hour==12)?12:hour%12), minute, second, (hour<12?"AM":"PM"));
   }
}