Java Utililty Methods TimeZone Create

List of utility methods to do TimeZone Create

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Description

The list of methods to do TimeZone Create are organized into topic(s).

Method

StringgetTimezoneAbbreviation(String tzid, boolean dst)
get Timezone Abbreviation 
if (tzid == null)
    return null;
for (int tzindex = 0; tzindex < ZONE_INFO.length; tzindex++) {
    if (tzid.equalsIgnoreCase(ZONE_INFO[tzindex][0]))
        return dst ? ZONE_INFO[tzindex][4] : ZONE_INFO[tzindex][2];
return null;
TimeZonegetTimeZoneChecked(String id)
get Time Zone Checked 
TimeZone tz = TimeZone.getTimeZone(id);
if (!tz.getID().equals(id)) {
    throw new IllegalArgumentException("illegal timezone id " + id);
return tz;
StringgetTimeZoneCorrectedProgramId(String progID)
Gets the time zone corrected program id of the given program id. 
int index = progID.lastIndexOf('_');
String timeString = progID.substring(index + 1);
int hourIndex = timeString.indexOf(':');
int offsetIndex = timeString.lastIndexOf(':');
if (hourIndex != offsetIndex) {
    int timeZoneOffset = Integer.parseInt(timeString.substring(offsetIndex + 1));
    int currentTimeZoneOffset = TimeZone.getDefault().getRawOffset() / 60000;
    if (timeZoneOffset != currentTimeZoneOffset) {
...
TimeZonegetTimeZoneDefault()
get Time Zone Default 
return null != System.getProperty(TIME_ZONE) ? TimeZone.getTimeZone(System.getProperty(TIME_ZONE)) : null;
String[]getTimeZoneIds()
get Time Zone Ids 
String[] ids = TimeZone.getAvailableIDs();
sort(ids);
return ids;
ListgetTimeZoneList()
get Time Zone List 
List<String> timeZones = new ArrayList<String>();
for (String timeZone : TimeZone.getAvailableIDs()) {
    timeZones.add(timeZone);
return timeZones;
String[]getTimezoneList()
get Timezone List 
return TimeZone.getAvailableIDs();
MapgetTimeZoneMap()
Returns a list of available time zones. 
Map<String, String> timeZoneMap = new TreeMap<String, String>();
for (String timeZoneId : TimeZone.getAvailableIDs()) {
    timeZoneMap.put(timeZoneId, timeZoneId);
return timeZoneMap;
TimeZonegetTimeZoneOfTenant()
get Time Zone Of Tenant 
return TimeZone.getTimeZone(TENANT_TIME_ZONE);
intgetTotalTimeZoneOffset(TimeZone zone)
Required to correctly account for all factors when dealing with TimeZones. 
int r = zone.getRawOffset();
if (zone.useDaylightTime()) {
    r += zone.getDSTSavings();
return r;