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TimeZone List Generator from Java
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| import java.util.ArrayList; | |
| import java.util.Comparator; | |
| import java.util.List; | |
| import java.util.TimeZone; | |
| import java.util.concurrent.TimeUnit; | |
| public class TimeZoneList { | |
| public static void main(String[] args) { | |
| String[] zoneIds = TimeZone.getAvailableIDs(); | |
| List<TimeZoneEntry> entries = new ArrayList<>(zoneIds.length); | |
| for (String id : zoneIds) { | |
| entries.add(generateEntry(TimeZone.getTimeZone(id))); | |
| } | |
| entries.sort(Comparator.comparingInt(a -> a.offset)); | |
| entries.forEach(e -> System.out.println(e.toJavaScript())); | |
| } | |
| private static TimeZoneEntry generateEntry(TimeZone tz) { | |
| long hours = TimeUnit.MILLISECONDS.toHours(tz.getRawOffset()); | |
| long minutes = TimeUnit.MILLISECONDS.toMinutes(tz.getRawOffset()) - TimeUnit.HOURS.toMinutes(hours); | |
| minutes = Math.abs(minutes); | |
| String result = String.format(hours >= 0 ? "+%d:%02d" : "%d:%02d", hours, minutes, tz.getID()); | |
| return new TimeZoneEntry(tz.getRawOffset(), tz.getID(), result); | |
| } | |
| } | |
| class TimeZoneEntry { | |
| int offset; | |
| String id; | |
| String label; | |
| TimeZoneEntry(int offset, String id, String label) { | |
| this.offset = offset; | |
| this.id = id; | |
| this.label = label; | |
| } | |
| @Override | |
| public String toString() { | |
| return label; | |
| } | |
| public String toJavaScript() { | |
| StringBuilder result = new StringBuilder(); | |
| result.append('{'); | |
| result.append("rawOffset: "); | |
| result.append(offset); | |
| result.append(", offset:\""); | |
| result.append(label); | |
| result.append("\", id:\""); | |
| result.append(id); | |
| result.append("\"},"); | |
| return result.toString(); | |
| } | |
| } |
Author
lpellegr
commented
Nov 2, 2019
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