Retrieves the ID of the current time zone.returnString the ID of the current time zone.
Retrieves the singleton instance of this class.returnTimezoneGetter the single instance of this class. return instance;
return instance;
Sets the singleton instance of this class.paraminstance TimezoneGetter the single instance of this class. if (instance != null) { throw new UnsupportedOperationException("TimezoneGetter instance already set"); } instance = getter;
if (instance != null) { throw new UnsupportedOperationException("TimezoneGetter instance already set"); } instance = getter;