java - How to get dates of a week (I know week number)?

Question

I know the week number of the year, a week is start from Sunday, then Monday, Tuesday...,Saturday.

Since I know the week number, what's the efficient way to get the dates of the specific week by using Java code??

Answer 1

If you don't want external library, just use calendar.

SimpleDateFormat sdf = new SimpleDateFormat("MM dd yyyy");
Calendar cal = Calendar.getInstance();
cal.set(Calendar.WEEK_OF_YEAR, 23);        
cal.set(Calendar.DAY_OF_WEEK, Calendar.MONDAY);
System.out.println(sdf.format(cal.getTime()));