How to round DateTime of Joda library to the nearest X minutes?

Question

How to round DateTime of Joda library to the nearest X minutes ?
For example:

X = 10 minutes
Jun 27, 11:32 -> Jun 27, 11         


        

Answer 1

When you want to round Joda DateTime the best solution IMHO is to use the built-in roundHalfCeilingCopy and roundHalfFloorCopy methods:

DateTime dateTime = DateTime.now();
DateTime newDateTime = dateTime.minuteOfHour().roundHalfCeilingCopy();

Please note that roundHalfCeilingCopy will favor the ceiling if halfway. You can use roundHalfFloorCopy in order to favor the floor in case it's halfway.