How to get the last Sunday before current date?

Question

I have the following code for getting the last Sunday before the current date:

Calendar calendar=Calendar.getInstance();
calendar.set(Calendar.WEEK_OF_YEAR, cale         


        

Answer 1

java.time.temporal.TemporalAdjuster

This can be easily achieved by a TemporalAdjuster implementation found in TemporalAdjusters along with the DayOfWeek enum. Specifically, previous​(DayOfWeek dayOfWeek).

 LocalDate
 .now()
 .with(
     TemporalAdjusters.previous( DayOfWeek.SUNDAY )
 ) ;

If today is Sunday and you would like the result to be today rather than a week ago, call previousOrSame​(DayOfWeek dayOfWeek).

 LocalDate
 .now()
 .with(
     TemporalAdjusters.previousOrSame( DayOfWeek.SUNDAY )
 ) ;

These classes are built into Java 8 and later, and built into Android 26 and later. For Java 6 & 7, most of the functionality is back-ported in ThreeTen-Backport. For earlier Android, see ThreeTenABP.