Get week start timestamp and week end timestamp using Java SE API and Joda Time (based on ISO)

Question

给定java.util.Date（或Joda DateTime），如何获得周开始时间戳（2010-03-01 00:00:00 UTC）和周结束时间戳（2010-03-08 00:00:00 UTC），还是年份和ISO周号，使用Java SE API和Joda Time？

Answer 1

JodaTime has support for ISO week numbers (see here ). For example:

java.util.Date date = new java.util.Date();
DateTime dateTime = new DateTime(date);
int isoWeek = dateTime.getWeekOfWeekyear();

You can also set the "start of aweek" using something like this:

DateTime startOfWeek = dateTime.withWeekOfWeekyear(4).withDayOfWeek(1).withTime(0, 0, 0, 0);