Is it possible to truncate date to Month with Java 8?

Question

I want to get the milliseconds truncated to days, I can use

Instant.now().truncatedTo(ChronoUnit.DAYS).toEpochMilli()

But I can't truncate to ChronoUnit.MONTH (it throws an exception). Do I need use a Calendar?

Answer 1

This is what java.time.temporal.TemporalAdjusters are for.

date.with(TemporalAdjusters.firstDayOfMonth()).truncatedTo(ChronoUnit.DAYS);