How to get 5 years before now

I am new to java 8 and I am trying to get five years before now, here is my code:

Instant fiveYearsBefore = Instant.now().plus(-5,
					ChronoUnit.YEARS);

But I get the following error:

java.time.temporal.UnsupportedTemporalTypeException: Unsupported unit: Years

Can anyone help me how to do that?

ZonedDateTime.now().minusYears(5).toInstant()

That will use your default time zone to compute the time. If you want another one, specify it in now(). For example:

ZonedDateTime.now(ZoneOffset.UTC).minusYears(5).toInstant()

According to the Javadoc, Instant will only accept temporal units from nanos to days [Instant.plus(long amountToAdd, TemporalUnit unit);][1]

You can use [LocalDateTime][2]. You use it the same way, but it will support operation on the YEARS level.

[1]: https://docs.oracle.com/javase/8/docs/api/java/time/Instant.html#plus-long-java.time.temporal.TemporalUnit- "Instant.plus(long amountToAdd, TemporalUnit unit)" [2]: https://docs.oracle.com/javase/8/docs/api/java/time/LocalDateTime.html

Instant does not support addition or subtraction of YEARS.

You can use this LocalDate if you only need date without time:

LocalDate date = LocalDate.now();
date = date.plus(-5, ChronoUnit.YEARS);

Otherwise you can user LocalDateTime.

I bumped into the same exception, but with ChronoUnit.MONTHS. It is a little bit misleading, because on compile time does not throw an error or warning or something. Anyway, I read the documentation, too:

and, yes, all the other ChronoUnit types are not supported unfortunately.

Happily, LocalDateTime can substract months and years, too.

> LocalDateTime.now().minusYears(yearsBack)

> LocalDateTime.now().minusMonths(monthsBack);

If you are so inclined is does not require the date time conversion.

Instant.now().minus(Period.ofYears(5).getDays(),ChronoUnit.DAYS);