Given an object of Instant, a time string representing the time at a specific ZoneId, How to construct a ZonedDateTime object with the date part (year, month, day) from the instant at the given ZoneId and the time part from the given time string?
For example:
Given an object of Instant of value 1437404400000 (equivalent to 20-07-2015 15:00 UTC), a time string 21:00, and an object of ZoneId representing Europe/London, I want to construct an object of ZonedDateTime equivalent to 20-07-2015 21:00 Europe/London.
You'll want to parse the time string to a LocalTime first, then you can adjust a ZonedDateTime from the Instant with the zone, and then apply the time. For example:
DateTimeFormatter formatter = DateTimeFormatter.ofPattern("HH:mm", Locale.US");
LocalTime time = LocalTime.parse(timeText, formatter);
ZonedDateTime zoned = instant.atZone(zoneId)
.with(time);
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