1: public class DayTester 2: { 3: public static void main(String[] args) 4: { 5: Day today = new Day(2001, 2, 3); // February 3, 2001 6: Day later = today.addDays(999); 7: System.out.println(later.getYear() 8: + "-" + later.getMonth() 9: + "-" + later.getDate()); 10: System.out.println(later.daysFrom(today)); // Prints 999 11: } 12: }