Convert LocalDateTime to LocalDateTime in UTC

Question

Convert LocalDateTime to LocalDateTime in UTC.

LocalDateTime convertToUtc(LocalDateTime date) {      //do conversion  } 

I searched over net. But did not get a solution

Answer 1

I personally prefer

LocalDateTime.now(ZoneOffset.UTC); 

as it is the most readable option.

Answer 2

LocalDateTime does not contain Zone information. ZonedDatetime does.

If you want to convert LocalDateTime to UTC, you need to wrap by ZonedDateTime fist.

You can convert like the below.

LocalDateTime ldt = LocalDateTime.now(); System.out.println(ldt.toLocalTime());  ZonedDateTime ldtZoned = ldt.atZone(ZoneId.systemDefault());  ZonedDateTime utcZoned = ldtZoned.withZoneSameInstant(ZoneId.of("UTC"));  System.out.println(utcZoned.toLocalTime());