How to find the number of days between two dates in java or groovy?

Question

I have a method which uses following logic to calculate difference between days.

long diff = milliseconds2 - milliseconds1;
long diffDays = diff / (24 * 60 *         


        

Answer 1

It's a well worn line, but for Dates use JodaTime.

Here's how to calculate date intervals using JodaTime.

Days days = Days.daysBetween(new DateTime(millis1), new DateTime(millis2));
int daysBetweenDates = days.getDays();