Java – How to determine the date one day prior to a given date in Java


I am assuming Java has some built-in way to do this.

Given a date, how can I determine the date one day prior to that date?

For example, suppose I am given 3/1/2009. The previous date is 2/28/2009. If I had been given 3/1/2008, the previous date would have been 2/29/2008.

Best Solution

Use the Calendar interface.

Calendar cal = Calendar.getInstance();
Date oneDayBefore= cal.getTime();

Doing "addition" in this way guarantees you get a valid date. This is valid for 1st of the year as well, e.g. if myDate is January 1st, 2012, oneDayBefore will be December 31st, 2011.