How to check if date is between interval in java? -

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• creating java date object year,month,day 6 answers

i have 6 int variables: currentmonth, currentday, monthfrom, dayfrom, monthuntil , dayuntil. need check if todays month , day falls within range of , until variables.

for example if currentmonth = 1, currentday = 2, monthfrom = 11, dayfrom = 24, monthuntil = 3 , dayuntil = 3 date in interval , method should return true.

i'm not sure how though. there other option check every possible outcome using ifs?

just quick range check calendar:

note: make sure import java.util.gregoriancalendar;

public static boolean isdateinrange(int month, int day,                                     int monthfrom, int dayfrom,                                     int monthuntil, int dayuntil) {     int yearroll = 0;     int currentroll = 0;     if (monthuntil < monthfrom) yearroll = -1; // ensures date calculated correctly.     if (month >= monthfrom && yearroll < 0) currentroll = -1;      gregoriancalendar testdate = new gregoriancalendar(currentroll, month, day);     gregoriancalendar startdate = new gregoriancalendar(yearroll, monthfrom, dayfrom);     gregoriancalendar enddate = new gregoriancalendar(0, monthuntil, dayuntil);      // makes pass if between or equal interval.     // remove if want pass dates explicitly between intervals.     if (testdate.compareto(startdate) == 0 || testdate.compareto(enddate) == 0) {         return true;     }      return !(testdate.before(startdate) || testdate.after(enddate)); } 

this take account fact february between november , march. since november part of previous year, move from date year ensure passing.

what doesn't take account however, fact february has day on leap-years. add extra-precision, need integers years. can following:

public static boolean isdateinrange(int year, int month, int day,                                     int yearfrom, int monthfrom, int dayfrom,                                     int yearuntil, int monthuntil, int dayuntil) {      gregoriancalendar testdate = new gregoriancalendar(year, month, day);     gregoriancalendar startdate = new gregoriancalendar(yearfrom, monthfrom, dayfrom);     gregoriancalendar enddate = new gregoriancalendar(yearuntil, monthuntil, dayuntil);      return !(testdate.before(startdate) || testdate.after(enddate)); } 

and here implementation date values gave plus few more:

public static void main(string[] args) {     system.out.println(isdateinrange(1, 2,                                      11, 24,                                      3, 3));     system.out.println(isdateinrange(11, 25,                                      11, 24,                                      3, 3));     system.out.println(isdateinrange(1, 2,                                      1, 1,                                      3, 3));     system.out.println(isdateinrange(1, 22,                                      1, 21,                                      1, 25)); } 

and results are:

true true true true 

will work @marvin's tests.