- daysFrom computes number of days between two days:
int n = today.daysFrom(birthday);
- addDays computes a day that is some days away from a
given day:
Day later = today.addDays(999);
- Mathematical relationship:
d.addDays(n).daysFrom(d) == n
d1.addDays(d2.daysFrom(d1)) == d2
- Clearer when written with "overloaded operators":
(d + n) - d == n
d1 + (d2 - d1) == d2
- Constructor Date(int year, int month, int date)
- getYear, getMonth, getDate acccesors
