    01: public class DayTest
    02: {
    03:    public static void main(String[] args)
    04:    {
    05:       Day today = new Day(2001, 2, 3); // February 3, 2001
    06:       Day later = today.addDays(999);
    07:       System.out.println(later.getYear()
    08:          + "-" + later.getMonth()
    09:          + "-" + later.getDate());
    10:       System.out.println(later.daysFrom(today)); // prints 999
    11:    }
    12: }