public class Time1 extends Time1Test
{
        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"));
        }
    }

TIME1TEST

public class Time1Test
{
    // instance variables - replace the example below with your own


    /**
     * Constructor for objects of class timetime
     */
    public static void main( String[] args)
    {
        // initialise instance variables
        Time1 time = new Time1();

        System.out.print( "The initial universal time is: ");
        System.out.println( time.toUniversalString() );
        System.out.print( "The initial standard time is: ");
        System.out.println( time.toString() );
        System.out.println();

        time.setTime( 13, 27, 6);
        System.out.print( "Universal time after setTime is:");
        System.out.println( time.toUniversalString() );
        System.out.print( "Standard time after setTime is:");
        System.out.println( time.toString() );
        System.out.println();

        try{
            time.setTime( 99, 99, 99);
        }
        catch (IllegalArgumentException e){
            System.out.printf( "Exception: %s\\n\\n", e.getMessage() );
        }

        System.out.println("After attempting invalid settings:");
        System.out.print( "Universal time:");
        System.out.println( time.toUniversalString() );
        System.out.print( "Standard time:");
        System.out.println( time.toString() );
    }