8.1

//Time1.java
//Time1 class declaration maintains the time in 24-hour format.

public class Time1
{
   private int hour;
   private int minute;
   private int second;

   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("%d:%02d:%02d %s",
            ((hour == 0 || hour == 12) ? 12 : hour % 12),
            minute, second, (hour < 12 ? "AM" : "PM"));
   }
}