lpellegr/TimeZoneList.java

## TimeZoneList.java
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();
    }

}
	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();
	}

	}