Time between Dates using LocalDate and Period

Question

If I do:

public static void main(String[] args) {
    LocalDate d1 = LocalDate.of(2015, Month.MARCH, 12);
    LocalDate d2 = LocalDate.of(2015, Month.APRIL, 13);
    System.out.println(d1.until(d2).getDays());
    // Prints 11
    LocalDate d3 = LocalDate.of(2015, Month.APRIL, 25);
    // Prints 23.

Both of which are incorrect. The second output makes sense as there is 1 month and 23 days between them.

How do I get the total number of days between?

I would want the first output to be 32 Days and the second to be 44 days (the total number of days between the two dates).

What am I doing wrong? I don't see a totalDays() method.

Hint: `13-12=1`, `25-12=13`. – Sotirios Delimanolis Jul 07 '15 at 16:51 — Sotirios Delimanolis, Jul 07 '15 at 16:51

assylias · Accepted Answer · 2015-07-07T16:55:35.367

2

You should probably not use a period (which has year and month components) if you are only interested in days. One solution to your question is:

System.out.println(DAYS.between(d1, d2)); //32

or alternatively:

System.out.println(d1.until(d2, DAYS)); //32

Note: I'm using import static java.time.temporal.ChronoUnit.DAYS;

edited Jul 07 '15 at 16:55

answered Jul 07 '15 at 16:53

assylias

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Or `d1.until(d2, ChronoUnit.DAYS)`. – Sotirios Delimanolis Jul 07 '15 at 16:54
Perfect. This is exactly what I needed. I remember doing it in C++ where you make a period and then there is a function to get total number of days in that period, thought it worked the same in Java. Thank you! – SwiftySwift Jul 07 '15 at 16:56
@Marcin A Period does not have a notion of a start or end date - so you can't convert 1 month 1 day into total days (would it be 29? 30? 31? 32?). – assylias Jul 07 '15 at 16:58
You're right. Then I must be getting mixed up with something else. – SwiftySwift Jul 07 '15 at 17:01

score 0 · Answer 2 · edited May 23 '17 at 12:14

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I don't know how much you want to do with dates and possible you don't need it but I really recommend Joda Time and here is how to get number of days between two dates.
In Java 8 we finally have good Dates library but if you don't use Java 8 then you have to get Joda Time

edited May 23 '17 at 12:14

Community

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answered Jul 07 '15 at 17:27

Michu93

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Time between Dates using LocalDate and Period

2 Answers2