Calendar cal2 = Calendar.getInstance();         SimpleDateFormat sdf = new SimpleDateFormat("HH:mm:ss");         sdf.setTimeZone(TimeZone.getTimeZone("Asia/Dubai"));        String wsSysTime2  = sdf.format(cal2.getTime());        System.out.println("END   TIME ..." + wsSysTime2);                          System.out.println(java.util.TimeZone.getDefault().getID());                TimeZone tz = TimeZone.getTimeZone("Poland");                 for(String str: tz.getAvailableIDs()){            System.out.println(str);        }        System.out.println(tz.getID());        System.out.println(tz.getDSTSavings());        System.out.println(tz.getDisplayName());        System.out.println(tz);                System.out.println(TimeZone.getTimeZone("Europe/London").useDaylightTime());        System.out.println(TimeZone.getTimeZone("Asia/Dubai").useDaylightTime());        System.out.println(TimeZone.getTimeZone("Asia/Bahrain").useDaylightTime());        System.out.println(TimeZone.getTimeZone("Poland").useDaylightTime());        System.out.println(TimeZone.getTimeZone("Europe/Moscow").useDaylightTime());     }