import java.time.LocalDateTime;
import java.time.ZoneId;
import java.util.AbstractMap.SimpleEntry;
import java.util.Map;

public class DisplayZoneAndOffSet {

  public static final boolean SORT_BY_REGION = false;

  public static void main(String[] args) {

    LocalDateTime localDateTime = LocalDateTime.now();

    long total = ZoneId.getAvailableZoneIds()
        .stream()
        .map(ZoneId::of)
        .map(zoneId -> new SimpleEntry<>(zoneId.toString(), localDateTime.atZone(zoneId)
            .getOffset()
            .getId()
            .replaceAll("Z", "+00:00")))
        .sorted(SORT_BY_REGION
            ? Map.Entry.comparingByKey()
            : Map.Entry.<String, String>comparingByValue().reversed())
        .peek(e -> System.out.printf(String.format("%35s (UTC%s) %n", e.getKey(), e.getValue())))
        .count();

    System.out.println("\nTotal Zone IDs " + total);
  }
}