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: }