Get the week start and end date given a current date and week start

Question

If possible I would prefer a joda or non-joda solution for the scenario below

Lets say if my week starts on 02/05/2012 and the given current date is 02/22/2011. I ne

Answer 1

 DateTime sDateTime = new DateTime(startDate); // My calendar start date
 DateTime eDateTime = new DateTime(date); // the date for the week to be determined

 Interval interval = new Interval(sDateTime, sDateTime.plusWeeks(1));
 while(!interval.contains(eDateTime))
 {
    interval = new Interval(interval.getEnd(), interval.getEnd().plusWeeks(1));
 }
 return interval;