java 8 LocalTime 到 LocalTime UTC

Question

I have a LocalTime instance created by parsing as below

Below time("01:00:00") is in ET,

LocalTime time1 = LocalTime.parse("01:00:00");

Now I want to convert this time1 to UTC LocalTime, NOT LocalDateTime or LocalDate. How to use that?

Answer 1

Now I want to convert this time1 to UTC LocalTime

LocalTime fundamentally means 'timezone-less', and UTC is a timezone.

That is like saying: "I want to convert this shape into a circle.. but with corners'. If you stick a corner in a circle it is no longer a circle. If you want some LocalTime, 'but in UTC', it is no longer a LocalTime.

OffsetTime ot = LocalTime.parse("01:00:00").atOffset(ZoneOffset.UTC);

will get you there. From there you can eg invoke .atDate(someLocalDate) to get an OffsetDateTime object out.