Java Utililty Methods Time in GMT

List of utility methods to do Time in GMT

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Description

The list of methods to do Time in GMT are organized into topic(s).

Method

StringgetGmtFromTimeInMillis(String val)
Gets the gmt from time in millis. 
long time = Long.parseLong(val);
DateFormat gmtFormat = new SimpleDateFormat("E, dd-MMM-yyyy hh:mm:ss");
TimeZone gmtTime = TimeZone.getTimeZone("GMT");
gmtFormat.setTimeZone(gmtTime);
return (gmtFormat.format(new Date(time)) + " GMT");
StringgetGMTime()
Get the current GMT time for user notification. 
SimpleDateFormat gmtDateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
gmtDateFormat.setTimeZone(TimeZone.getTimeZone("GMT"));
return gmtDateFormat.format(new java.util.Date());
StringgetGMTime()
get GM Time 
SimpleDateFormat dform = ((SimpleDateFormat) DateFormat.getDateInstance());
dform.applyPattern("yyyyMMddHH");
dform.setTimeZone(TimeZone.getTimeZone("GMT"));
Calendar cal = Calendar.getInstance(TimeZone.getTimeZone("GMT"));
String gmtime = dform.format(cal.getTime());
gmtime += Integer.toString(((int) Math.floor((double) cal.get(Calendar.MINUTE) / 10)));
return gmtime;
StringgetGMTString(Date d)
get GMT String 
DateFormat format = new SimpleDateFormat("EEE, dd MMM yyyy HH:mm:ss z", Locale.ENGLISH);
format.setTimeZone(TimeZone.getTimeZone("GMT"));
return format.format(d);
StringgetGMTString(Date date, TimeZone tz)
get GMT String 
DecimalFormat fmt = new DecimalFormat("'GMT'+00':00';'GMT'-00':00'");
int off = tz.getRawOffset();
if (tz.inDaylightTime(date))
    off += 3600000;
off = off / 3600000;
return fmt.format(off);
DategetGMTTime(Date localTime)
get GMT Time from local time. 
if (localTime == null)
    return null;
return getTime(localTime, TimeZone.getDefault(), TimeZone.getTimeZone("GMT"));
StringgetGMTTime(final Date date)
Returns the GTM date/time String for the specified value using the RFC1123 pattern. 
final DateFormat formatter = new SimpleDateFormat(RFC1123_PATTERN, LOCALE_US);
formatter.setTimeZone(GMT_ZONE);
return formatter.format(date);
StringgetGMTTimeStr(Date pageTime, int offset)
get GMT Time string for given page date and offset, time would be formated to DEFAULT_DATE_FORMAT; 
return formatDate(getGMTFromLocal(pageTime, offset), DEFAULT_DATE_FORMAT);
StringgetGmtTimeString(double startTime)
Returns a time string of the form yyyy-MM-dd'T'HH:mm:ss'Z' from the specified date number. 
if (Double.isNaN(startTime)) {
    return NOT_AVAILABLE;
Date date = new Date(Math.round(startTime));
SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd'T'HH:mm:ss'Z'");
formatter.setTimeZone(TimeZone.getTimeZone("GMT"));
return formatter.format(date);