Change time to another timezone

switchingTimezone.java

// get now date
LocalDateTime ldt = LocalDateTime.now();
// tell him that this is Europe/Berlin
ZonedDateTime serverTime = ldt.atZone(ZoneId.of("Europe/Berlin"));

// then tell him to the same time but in another zone
ZonedDateTime playerTime = serverTime.withZoneSameInstant(ZoneId.of("UTC"));

System.out.println(serverTime);
System.out.println(playerTime);

// 2021-04-16T14:45:31.096+02:00[Europe/Berlin]
// 2021-04-16T12:45:31.096Z[UTC]

// DO NOT MIX IT UP WITH THIS APPROACH

ldt = LocalDateTime.now();
serverTime = ldt.atZone(ZoneId.of("Europe/Berlin"));
playerTime = serverTime.withZoneSameLocal(ZoneId.of("UTC"));

System.out.println(serverTime);
System.out.println(playerTime);

// 2021-04-16T14:47:11.918+02:00[Europe/Berlin]
// 2021-04-16T14:47:11.918Z[UTC]