import Clock;
class ClockDemo
{
   public static void main(String[] argv)
   {
       Clock clock = new Clock();  // use the default constructor

       clock.print();    // should show 0:0:0
       clock.setClock(12,45,0); 
       clock.print();    // should show 12:45:0
       clock = new Clock(1,2,3);
       int h = clock.getHour();
       int m = clock.getMinute();
       int s = clock.getSecond();
       System.out.println("clock reading is "+h+":"+m+":"+s);
       // should show clock reading is 1:2:3
   }
}