Java Data Type - 如何通过偏移更改时区中的日期时间

import java.time.ZoneId;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;

public class Main {

  public static void main(String[] args) {
    ZonedDateTime nowInAthens = ZonedDateTime.now(ZoneId.of("Europe/Athens"));

    System.out.println(nowInAthens.withZoneSameInstant(ZoneId.ofOffset("UTC",
        ZoneOffset.ofHours(3))));
  }
}