Question

How do i implement a java comparator class which can sort the order of the list of date/time strings?

Like e.g.

i have

2012-06-15T12:01:00.000+08:00
2012-06-25T12:15:00.000+08:00
2012-06-08T00:00:00.000Z

Then it should be sorted like

2012-06-08T00:00:00.000Z
2012-06-15T12:01:00.000+08:00
2012-06-25T12:15:00.000+08:00

Answer 1

You have two issues here (since parsing the strings directly is not going to work).

1. Convert your strings into dates. See SimpleDateFormat for more info and the DateFormat.parse() method
2. Sort the subsequent dates in a collection using Collections.sort.