Examples of java.util.TimeZone

java.util.TimeZone
TimeZone represents a time zone offset, and also figures out daylight savings.
Typically, you get a TimeZone using getDefault which creates a TimeZone based on the time zone where the program is running. For example, for a program running in Japan, getDefault creates a TimeZone object based on Japanese Standard Time.
You can also get a TimeZone using getTimeZone along with a time zone ID. For instance, the time zone ID for the U.S. Pacific Time zone is "America/Los_Angeles". So, you can get a U.S. Pacific Time TimeZone object with:
```
 TimeZone tz = TimeZone.getTimeZone("America/Los_Angeles"); 
```
You can use the getAvailableIDs method to iterate through all the supported time zone IDs. You can then choose a supported ID to get a TimeZone. If the time zone you want is not represented by one of the supported IDs, then a custom time zone ID can be specified to produce a TimeZone. The syntax of a custom time zone ID is:
```
 CustomID: GMT Sign Hours : Minutes GMT Sign Hours Minutes GMT Sign Hours Sign: one of + - Hours: Digit Digit Digit Minutes: Digit Digit Digit: one of 0 1 2 3 4 5 6 7 8 9 
```
Hours must be between 0 to 23 and Minutes must be between 00 to 59. For example, "GMT+10" and "GMT+0010" mean ten hours and ten minutes ahead of GMT, respectively.
The format is locale independent and digits must be taken from the Basic Latin block of the Unicode standard. No daylight saving time transition schedule can be specified with a custom time zone ID. If the specified string doesn't match the syntax, "GMT" is used.
When creating a TimeZone, the specified custom time zone ID is normalized in the following syntax:
```
 NormalizedCustomID: GMT Sign TwoDigitHours : Minutes Sign: one of + - TwoDigitHours: Digit Digit Minutes: Digit Digit Digit: one of 0 1 2 3 4 5 6 7 8 9 
```
For example, TimeZone.getTimeZone("GMT-8").getID() returns "GMT-08:00".
Three-letter time zone IDs
For compatibility with JDK 1.1.x, some other three-letter time zone IDs (such as "PST", "CTT", "AST") are also supported. However, their use is deprecated because the same abbreviation is often used for multiple time zones (for example, "CST" could be U.S. "Central Standard Time" and "China Standard Time"), and the Java platform can then only recognize one of them. @see Calendar @see GregorianCalendar @see SimpleTimeZone @version 1.76 12/07/07 @author Mark Davis, David Goldsmith, Chen-Lieh Huang, Alan Liu @since JDK1.1

        return s;
    }


    public Sequence eval(Sequence<? extends Item> contextSeq, ValueSequence argv, DynamicContext dynEnv)
            throws XQueryException {
        TimeZone tz = dynEnv.implicitTimezone();
        int utcOffset = tz.getOffset(0);
        final Duration d = XsDatatypeFactory.createDuration(utcOffset);
        return new DurationValue(d, DayTimeDurationType.DAYTIME_DURATION);
    }

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        Item first = argv.getItem(0);
        DateTimeValue arg = (DateTimeValue) first;
        XMLGregorianCalendar cal = arg.getValue();
        final long utcOffsetInMillis;
        if(arglen == 1) {
            TimeZone tz = dynEnv.implicitTimezone();
            utcOffsetInMillis = tz.getRawOffset();
        } else if(arglen == 2) {
            Item sec = argv.getItem(1);
            if(sec.isEmpty()) {
                cal.setTimezone(DatatypeConstants.FIELD_UNDEFINED);
                return arg;

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    }
    if (o instanceof TimeZone == false)
    {
      throw new BeanException("Failed to convert object of type " + o.getClass() + ": Not a timezone.");
    }
    final TimeZone tz = (TimeZone) o;
    return tz.getID();
  }

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    super.setFormatter(dfmt);
  }


  public Object getValue(final ExpressionRuntime runtime, final Element element)
  {
    final TimeZone timeZone = runtime.getResourceBundleFactory().getTimeZone();
    if (ObjectUtilities.equal(timeZone, this.timeZone) == false)
    {
      this.timeZone = timeZone;
      getDateFormat().setTimeZone(timeZone);
    }

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      {
        // return the default to-string behavior of java.util.Date
        formatStringRaw = "EEE MMM dd HH:mm:ss zzz yyyy";
      }
      final Locale locale = runtime.getResourceBundleFactory().getLocale();
      final TimeZone timeZone = runtime.getResourceBundleFactory().getTimeZone();
      final SimpleDateFormat dateFormat = new SimpleDateFormat(String.valueOf(formatStringRaw), locale);
      dateFormat.setDateFormatSymbols(new DateFormatSymbols(locale));
      dateFormat.setTimeZone(timeZone);
      return dateFormat.format(staticValue);
    }

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    }


    try
    {
      final Locale locale = runtime.getResourceBundleFactory().getLocale();
      final TimeZone timeZone = runtime.getResourceBundleFactory().getTimeZone();
      if (dateFormat == null)
      {
        this.formatString = String.valueOf(formatStringRaw);
        this.locale = locale;
        this.timeZone = timeZone;

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      }
    }
  }
  
  private Float getUptime(HttpServletRequest aRequest){
    TimeZone tz = (TimeZone)getExistingSession().getServletContext().getAttribute(Controller.TIME_ZONE);
    DateTime now = DateTime.now(tz);
    DateTime startup = getStartTime();
    int SECONDS_PER_DAY = 86400;
    return new Float(startup.numSecondsFrom(now)/SECONDS_PER_DAY);
  }

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        LOG.log(Level.FINE, "server sending reply: ", reply);


        long timeToLive = 0;
        if (request.getJMSExpiration() > 0) {
            TimeZone tz = new SimpleTimeZone(0, "GMT");
            Calendar cal = new GregorianCalendar(tz);
            timeToLive =  request.getJMSExpiration() - cal.getTimeInMillis();
        }
        
        if (timeToLive >= 0) {

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        String iCalFormat   = null;
        int    startPoint   = 0;
        String tzName       = null;


        TimeZone offsetZone = java.util.TimeZone.getDefault();


        if (iCalString.startsWith("TZID=")){
            // Time for a specific Time Zone
            startPoint = iCalString.indexOf(":") + 1;
            // Get timezone.

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        return date;
    }


    public TimeZone getTimeZoneFromDate(String iCalString, int startPoint)
    {
        TimeZone tz = null;
        try {
            String tzName = null;
            if (iCalString.indexOf("TZID=/softwarestudio.org/Olson_20011030_5/") != -1)
            {
                tzName = iCalString.substring("TZID=/softwarestudio.org/Olson_20011030_5/".length(),startPoint -1);

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Examples of java.util.TimeZone

Three-letter time zone IDs

Related Classes of java.util.TimeZone