Java Utililty Methods TimeZone Get

List of utility methods to do TimeZone Get

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Description

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

Method

StringgetCurrentTimezoneOffset()
get Current Timezone Offset 
TimeZone tz = TimeZone.getDefault();
Calendar cal = GregorianCalendar.getInstance(tz);
int offsetInMillis = tz.getOffset(cal.getTimeInMillis());
String offset = String.format("%02d:%02d", Math.abs(offsetInMillis / 3600000),
        Math.abs((offsetInMillis / 60000) % 60));
offset = (offsetInMillis >= 0 ? "+" : "-") + offset;
return offset;
CalendargetDateInTimeZone(final Date date, final TimeZone timeZone)
Get date in timezone 
final Calendar calendar = Calendar.getInstance(timeZone);
calendar.setTime(date);
return calendar;
longgetDefaultTimeZoneOffset()
Get the offset between GMT and the local timezone 
long offset = 0;
TimeZone zn = TimeZone.getDefault();
Calendar local = Calendar.getInstance();
local.setTime(new Date(System.currentTimeMillis()));
int time = (int) (local.get(Calendar.HOUR_OF_DAY) * HOUR_FACTOR + local.get(Calendar.MINUTE) * MINUTE_FACTOR
        + local.get(Calendar.SECOND) * SECOND_FACTOR);
offset = zn.getOffset(1, 
        local.get(Calendar.YEAR), local.get(Calendar.MONTH), local.get(Calendar.DAY_OF_MONTH),
...
intgetDefaultTimeZoneRawOffset()
get Default Time Zone Raw Offset 
return TimeZone.getDefault().getRawOffset();
StringgetDefaultTimeZoneString()
get Default Time Zone String 
if (timeZone == null) {
    String s = new SimpleDateFormat("Z").format(new Date(0)); 
    timeZone = s.substring(0, 3) + ':' + s.substring(3, 5);
return timeZone;
intgetDiffTimeZoneRawOffset(String timeZoneId)
get Diff Time Zone Raw Offset 
return TimeZone.getDefault().getRawOffset() - TimeZone.getTimeZone(timeZoneId).getRawOffset();
StringgetDisplayDate(Date date, TimeZone tz, Locale inLocale, int style, boolean includeTime)
Private method for getting display date for a particular style: short, medium, long or full. 
if (date == null || inLocale == null) {
    return null;
if (includeTime && (tz == null)) {
    tz = TimeZone.getTimeZone("GMT");
try {
    SimpleDateFormat formatter;
...
intgetDSTSavings(TimeZone tz)

Equivalent of TimeZone.getDSTSavings() in JDK 1.4, but Quartz is trying to support JDK 1.3. 

if (tz.useDaylightTime()) {
    return 3600000;
return 0;
longgetDSTTime(TimeZone tz, Date date)
get DST Time 
return date.getTime() + (tz.inDaylightTime(date) ? tz.getDSTSavings() : 0);
StringgetEnd(String date, TimeZone tz)
get End 
return date + " 23:59:59 " + tz.getDisplayName(true, TimeZone.SHORT);