Decrement a date in Java

Question

I want to get the previous day (24 hours) from the current time.

e.g if current time is Date currentTime = new Date();

2011-04-25 12:

Answer 1

I would suggest you use Joda Time to start with, which is a much nicer API. Then you can use:

DateTime yesterday = new DateTime().minusDays(1);

Note that "this time yesterday" isn't always 24 hours ago though... you need to think about time zones etc. You may want to use LocalDateTime or Instant instead of DateTime.