Examples of java.util.TimeZone$DisplayNames

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


    /**
     * Tests this class.
     */
    public static void main(final String[] args) throws Exception {
        final TimeZone tz = TimeZone.getTimeZone("UTC");
        final Calendar calendar = Calendar.getInstance(tz);
        calendar.clear();
        calendar.set(1970, 0, 1);
        new TimeScaleUnit(SECOND, calendar.getTime());
    }

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  final public Calendar zoneExpr(Calendar calendar) throws ParseException {
    int         sign = 1;
    int         zoneHour;
    int         zoneMinute = 0;
    Token       token;
    TimeZone    timeZone;
    switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
    case PLUS:
    case MINUS:
    case UINT:
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case PLUS:
      case MINUS:
        sign = sign();
        break;
      default:
        jj_la1[32] = jj_gen;
        ;
      }
      zoneHour = unsignedInteger();
      switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
      case COLON:
      case UINT:
        switch ((jj_ntk==-1)?jj_ntk():jj_ntk) {
        case COLON:
          jj_consume_token(COLON);
          break;
        default:
          jj_la1[33] = jj_gen;
          ;
        }
        zoneMinute = unsignedInteger();
        break;
      default:
        jj_la1[34] = jj_gen;
        ;
      }
                if (zoneHour >= 100)
                {
                    zoneMinute += zoneHour % 100;
                    zoneHour /= 100;
                }
                if (zoneHour > 23 || zoneMinute > 59)
                {
                    {if (true) throw new ParseException("invalid time-zone in timestamp");}
                }
                timeZone = TimeZone.getTimeZone("UTC");
                timeZone.setRawOffset(sign*(zoneHour*60 + zoneMinute)*60*1000);
      break;
    case NAME:
      token = jj_consume_token(NAME);
                timeZone = TimeZone.getTimeZone(token.image);
      break;

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    public static String formatDate(String dateTime, String pattern)
    {
        final String yearSymbols = "Gy";
        final String monthSymbols = "M";
        final String daySymbols = "dDEFwW";
        TimeZone timeZone;
        String zone;


        // Get the timezone information if it was supplied and modify the 
        // dateTime so that SimpleDateFormat will understand it.
        if (dateTime.endsWith("Z") || dateTime.endsWith("z"))

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      }
      String[][] zoneStrings = formatData.getZoneStringsWrapper();
      buffer.append(zoneStrings[zoneIndex][index]);
        }
    } else {
        TimeZone tz = calendar.getTimeZone();
        boolean daylight = (calendar.get(Calendar.DST_OFFSET) != 0);
        int tzstyle = (count < 4 ? TimeZone.SHORT : TimeZone.LONG);
        buffer.append(tz.getDisplayName(daylight, tzstyle, formatData.locale));
    }
      }
            break;


        case 18: // 'Z' - ZONE_OFFSET ("-/+hhmm" form)

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  // If the deserialized object has a SimpleTimeZone, try
  // to replace it with a ZoneInfo equivalent in order to
  // be compatible with the SimpleTimeZone-based
  // implementation as much as possible.
  TimeZone tz = getTimeZone();
  if (tz instanceof SimpleTimeZone) {
      String id = tz.getID();
      TimeZone zi = TimeZone.getTimeZone(id);
      if (zi != null && zi.hasSameRules(tz) && zi.getID().equals(id)) {
    setTimeZone(zi);
      }
  }
    }

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      return "NOW";
    }
    else {
      long date = sendTime.getTime();
      
      TimeZone tz = TimeZone.getTimeZone(timeZoneID);
//      tz.setStartRule(Calendar.MARCH, -1, Calendar.SUNDAY,  2*60*60*1000);
//      tz.setEndRule(Calendar.OCTOBER, -1, Calendar.SUNDAY,  2*60*60*1000);


      date -= tz.getRawOffset();
      if (tz.inDaylightTime(sendTime)) {
        date -= 3600 * 1000;
      }


      return new SimpleDateFormat("yyyyMMddHHmm").format(new Date(date));
    }

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  public static String getDateTime()
  {
    Calendar cal = Calendar.getInstance();
    SimpleDateFormat dateTimeFormat = new SimpleDateFormat(DATETIMEFORMAT);
    TimeZone timeZone = cal.getTimeZone();


    return dateTimeFormat.format(new Date(cal.getTimeInMillis()
        - timeZone.getOffset(cal.getTimeInMillis())));
  }

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    public void testLocalTime() throws ParseException {
        Date dsum = DF.parse("AD 2010-05-09 20:00:00:0 UTC");
        Date dwin = DF.parse("AD 2010-01-01 20:00:00:0 UTC");
        
        TimeZone tzRome = TimeZone.getTimeZone("Europe/Rome");
        if (tzRome.getOffset(0) == 0) {
            throw new RuntimeException(
                    "Can't get time zone for Europe/Rome!");
        }
        assertEquals(
                "2010-05-09T22:00:00+02",
                dateToISO8601DateTimeString(dsum, tzRome));
        assertEquals(
                "2010-01-01T21:00:00+01",
                dateToISO8601DateTimeString(dwin, tzRome));
        assertEquals(
                "2010-05-09",
                dateToISO8601DateString(dsum, tzRome));
        assertEquals(
                "2010-01-01",
                dateToISO8601DateString(dwin, tzRome));
        assertEquals(
                "22:00:00+02",
                dateToISO8601TimeString(dsum, tzRome));
        assertEquals(
                "21:00:00+01",
                dateToISO8601TimeString(dwin, tzRome));
        
        TimeZone tzNY = TimeZone.getTimeZone("America/New_York");
        if (tzNY.getOffset(0) == 0) {
            throw new RuntimeException(
                    "Can't get time zone for America/New_York!");
        }
        assertEquals(
                "2010-05-09T16:00:00-04",
                dateToISO8601DateTimeString(dsum, tzNY));
        assertEquals(
                "2010-01-01T15:00:00-05",
                dateToISO8601DateTimeString(dwin, tzNY));
        assertEquals(
                "2010-05-09",
                dateToISO8601DateString(dsum, tzNY));
        assertEquals(
                "2010-01-01",
                dateToISO8601DateString(dwin, tzNY));
        assertEquals(
                "16:00:00-04",
                dateToISO8601TimeString(dsum, tzNY));
        assertEquals(
                "15:00:00-05",
                dateToISO8601TimeString(dwin, tzNY));
        
        TimeZone tzFixed = TimeZone.getTimeZone("GMT+02:30");
        assertEquals(
                "2010-05-09T22:30:00+02:30",
                dateToISO8601DateTimeString(dsum, tzFixed));
        assertEquals(
                "2010-01-01T22:30:00+02:30",

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        tf.setTimeZone(DateUtil.UTC);
        assertEquals("00:00:00", tf.format(t));
        assertEquals("00:00:00",
                dateToISO8601UTCTimeString(t, false));
        
        TimeZone gmt1 = DateUtil.getTimeZone("GMT+01"); 
        tf.setTimeZone(gmt1);
        assertEquals("01:00:00", tf.format(t)); 
        assertEquals("01:00:00+01",
                dateToISO8601TimeString(t, gmt1));
    }

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        if (jsonLocaleCode != null) {
          datasource.setLocale(jsonLocaleCode);
        }
      }
      
      TimeZone jsonTimezone = (TimeZone) getParameterValue(JsonQueryExecuterFactory.JSON_TIME_ZONE, true);
      if (jsonTimezone != null) {
        datasource.setTimeZone(jsonTimezone);
      } else {
        String jsonTimezoneId = getStringParameterOrProperty(JsonQueryExecuterFactory.JSON_TIMEZONE_ID);
        if (jsonTimezoneId != null) {

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Examples of java.util.TimeZone$DisplayNames

Three-letter time zone IDs

Related Classes of java.util.TimeZone$DisplayNames