java.time.ZoneId for Working with Time Zones in Java

When working with dates and times across time zones, use ZoneId to handle time zone rules properly. Always consider time zone implications in global applications.

Source Code

Set allZoneIds = ZoneId.getAvailableZoneIds();
ZoneId zoneId = ZoneId.of("Europe/Paris");
ZonedDateTime zonedDateTime = ZonedDateTime.now(zoneId);
System.out.println(zonedDateTime);