ZoneId Java Guide | Time Zone Handling

1 year ago
Emily Johnson
1 minute

ZoneId is a class in Java 8 that is used to represent time zone identifiers, providing methods to retrieve and manipulate time zones.

Here are some common methods of the ZoneId class:

  1. Create a ZoneId object based on the identifier of the time zone. For example, ZoneId.of(“Asia/Tokyo”) will create a ZoneId object representing the Tokyo time zone.
  2. systemDefault(): returns the system’s default time zone.
  3. Return a collection of all available time zone identifiers with getAvailableZoneIds().
  4. getRules(): returns the time zone rules associated with this time zone.
  5. withZoneSameInstant(ZoneId zoneId) : Returns a new ZoneId object with the same offset as the given time zone, but representing the same instant.
  6. withZoneSameLocal(ZoneId zoneId): returns a new ZoneId object with the same offset as the given time zone, but representing the same local time.

With the ZoneId class, you can access and manipulate time zone information, such as converting time zones, obtaining a list of available time zones, and converting dates and times between different time zones.

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