Convert LocalDateTime to LocalDateTime with specific Zone in Java

Vinícius Britto :

I need to do a LocalDateTime conversion of a UTC date to another LocalDateTime variable considering a specific timezone tz.

During my research I found many solutions, but they all convert the LocalDateTime to another type, like ZonedDateTime.

I need something like that, but LocalDateTime wont work with ZoneId:

LocalDateTime output = input.getInitDate().of(ZoneId.of(tz))

Considering a -3 timezone:

    input: 2019-12-03T18:24:07

    output: 2019-12-03T15:24:07

Eng.Fouad :

You need to convert it first to ZonedDateTime, change the timezone, and then extract LocalDateTime from that:

ZoneId from = ...;
ZoneId to = ...;
LocalDateTime input = ...;
LocalDateTime output = input.atZone(from).withZoneSameInstant(to).toLocalDateTime();

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