Convert LocalDateTime to LocalDateTime in UTC

Question

Convert LocalDateTime to LocalDateTime in UTC.

LocalDateTime convertToUtc(LocalDateTime date) {

    //do conversion

}

I searched over net. Bu

Answer 1

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());