Get Last Friday of Month in Java

Question

I am working on a project where the requirement is to have a date calculated as being the last Friday of a given month. I think I have a solution that only uses standard Ja

Answer 1

java.time

Using java.time library built into Java 8 and later, you may use TemporalAdjusters.lastInMonth:

val now = LocalDate.now() 
val lastInMonth = now.with(TemporalAdjusters.lastInMonth(DayOfWeek.FRIDAY))

You may choose any day from the DayOfWeek enum.

If you need to add time information, you may use any available LocalDate to LocalDateTime conversion like

lastFriday.atStartOfDay() // e.g. 2015-11-27T00:00