Examples of com.google.gwt.i18n.client.DateTimeFormat

com.google.gwt.i18n.client.DateTimeFormat

Formats and parses dates and times using locale-sensitive patterns.

Patterns

Symbol	Meaning	Presentation	Example
`G`	era designator	Text	`AD`
`y`	year	Number	`1996`
`L`	standalone month in year	Text or Number	`July (or) 07`
`M`	month in year	Text or Number	`July (or) 07`
`d`	day in month	Number	`10`
`h`	hour in am/pm (1-12)	Number	`12`
`H`	hour in day (0-23)	Number	`0`
`m`	minute in hour	Number	`30`
`s`	second in minute	Number	`55`
`S`	fractional second	Number	`978`
`E`	day of week	Text	`Tuesday`
`c`	standalone day of week	Text	`Tuesday`
`a`	am/pm marker	Text	`PM`
`k`	hour in day (1-24)	Number	`24`
`K`	hour in am/pm (0-11)	Number	`0`
`z`	time zone	Text	`Pacific Standard Time(see comment)`
`Z`	time zone (RFC 822)	Text	`-0800(See comment)`
`v`	time zone id	Text	`America/Los_Angeles(See comment)`
`'`	escape for text	Delimiter	`'Date='`
`''`	single quote	Literal	`'o''clock'`

The number of pattern letters influences the format, as follows:

Text: if 4 or more, then use the full form; if less than 4, use short or abbreviated form if it exists (e.g., "EEEE" produces "Monday", "EEE" produces "Mon")
Number: the minimum number of digits. Shorter numbers are zero-padded to this amount (e.g. if "m" produces "6", "mm" produces "06"). Year is handled specially; that is, if the count of 'y' is 2, the Year will be truncated to 2 digits. (e.g., if "yyyy" produces "1997", "yy" produces "97".) Unlike other fields, fractional seconds are padded on the right with zero.
Text or Number: 3 or more, use text, otherwise use number. (e.g. "M" produces "1", "MM" produces "01", "MMM" produces "Jan", and "MMMM" produces "January". Some pattern letters also treat a count of 5 specially, meaning a single-letter abbreviation: L, M, E, and c.

Any characters in the pattern that are not in the ranges of ['a '..'z'] and ['A'..'Z'] will be treated as quoted text. For instance, characters like ':', ' .', ' ' (space), '#' and ' @' will appear in the resulting time text even they are not embraced within single quotes.

[Time Zone Handling] Web browsers don't provide all the information we need for proper time zone formating -- so GWT has a copy of the required data, for your convenience. For simpler cases, one can also use a fallback implementation that only keeps track of the current timezone offset. These two approaches are called, respectively, Common TimeZones and Simple TimeZones, although both are implemented with the same TimeZone class. "TimeZone createTimeZone(String timezoneData)" returns a Common TimeZone object, and "TimeZone createTimeZone(int timeZoneOffsetInMinutes)" returns a Simple TimeZone object. The one provided by OS fall into to Simple TimeZone category. For formatting purpose, following table shows the behavior of GWT DateTimeFormat.

Pattern	Common TimeZone	Simple TimeZone
z, zz, zzz	PDT	UTC-7
zzzz	Pacific Daylight Time	UTC-7
Z, ZZ, ZZZ	-0700	-0700
ZZZZ	GMT-07:00	GMT-07:00
v, vv, vvv, vvvv	America/Los_Angeles	Etc/GMT+7

Parsing Dates and Times

The pattern does not need to specify every field. If the year, month, or day is missing from the pattern, the corresponding value will be taken from the current date. If the hour, minute, or second is missing, the value defaults to zero.

As with formatting (described above), the count of pattern letters determines the parsing behavior.

Text: 4 or more pattern letters--use full form, less than 4--use short or abbreviated form if one exists. In parsing, we will always try long format, then short.
Number: the minimum number of digits.
Text or Number: 3 or more characters means use text, otherwise use number

Although the current pattern specification doesn't not specify behavior for all letters, it may in the future. It is strongly discouraged to use unspecified letters as literal text without quoting them.

[Note on TimeZone] The time zone support for parsing is limited. Only standard GMT and RFC format are supported. Time zone specification using time zone id (like America/Los_Angeles), time zone names (like PST, Pacific Standard Time) are not supported. Normally, it is too much a burden for a client application to load all the time zone symbols. And in almost all those cases, it is a better choice to do such parsing on server side through certain RPC mechanism. This decision is based on particular use cases we have studied; in principle, it could be changed in future versions.

Examples

Pattern	Formatted Text
`"yyyy.MM.dd G 'at' HH:mm:ss vvvv"`	`1996.07.10 AD at 15:08:56 America/Los_Angeles`
`"EEE, MMM d, ''yy"`	`Wed, July 10, '96`
`"h:mm a"`	`12:08 PM`
`"hh 'o''clock' a, zzzz"`	`12 o'clock PM, Pacific Daylight Time`
`"K:mm a, vvvv"`	`0:00 PM, America/Los_Angeles`
`"yyyyy.MMMMM.dd GGG hh:mm aaa"`	`01996.July.10 AD 12:08 PM`

Additional Parsing Considerations

When parsing a date string using the abbreviated year pattern ( "yy"), the parser must interpret the abbreviated year relative to some century. It does this by adjusting dates to be within 80 years before and 20 years after the time the parser instance is created. For example, using a pattern of "MM/dd/yy" and a DateTimeFormat object created on Jan 1, 1997, the string "01/11/12" would be interpreted as Jan 11, 2012 while the string "05/04/64" would be interpreted as May 4, 1964. During parsing, only strings consisting of exactly two digits, as defined by {@link java.lang.Character#isDigit(char)}, will be parsed into the default century. If the year pattern does not have exactly two 'y' characters, the year is interpreted literally, regardless of the number of digits. For example, using the pattern "MM/dd/yyyy", "01/11/12" parses to Jan 11, 12 A.D.

When numeric fields abut one another directly, with no intervening delimiter characters, they constitute a run of abutting numeric fields. Such runs are parsed specially. For example, the format "HHmmss" parses the input text "123456" to 12:34:56, parses the input text "12345" to 1:23:45, and fails to parse "1234". In other words, the leftmost field of the run is flexible, while the others keep a fixed width. If the parse fails anywhere in the run, then the leftmost field is shortened by one character, and the entire run is parsed again. This is repeated until either the parse succeeds or the leftmost field is one character in length. If the parse still fails at that point, the parse of the run fails.

In the current implementation, timezone parsing only supports GMT:hhmm, GMT:+hhmm, and GMT:-hhmm.

Example

{@example com.google.gwt.examples.DateTimeFormatExample}


    if (val != null && val instanceof Number && c.getNumberFormat() != null) {
      Number n = (Number) val;
      val = c.getNumberFormat().format(n.doubleValue());
    } else if (val != null && val instanceof Date && c.getDateTimeFormat() != null) {
      DateTimeFormat dtf = c.getDateTimeFormat();
      val = dtf.format((Date) val);
    }


    String text = null;
    if (val != null) {
      text = val.toString();

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    if (val != null && c.getNumberFormat() != null) {
      Number n = (Number) val;
      NumberFormat nf = cm.getColumn(colIndex).getNumberFormat();
      val = nf.format(n.doubleValue());
    } else if (val != null && c.getDateTimeFormat() != null) {
      DateTimeFormat dtf = c.getDateTimeFormat();
      val = dtf.format((Date) val);
    }


    String text = null;
    if (val != null) {
      text = val.toString();

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            if (type.equals(Date.class)) {
              if ("timestamp".equals(field.getFormat())) {
                Date d = new Date(Long.parseLong(s) * 1000);
                model.set(name, d);
              } else {
                DateTimeFormat format = DateTimeFormat.getFormat(field.getFormat());
                Date d = format.parse(s);
                model.set(name, d);
              }
            }
          } else {
            model.set(name, s);

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    }


    public String getDateString() {
        String t = textWidget.getText();
        Date date = this.visualFormatFormatter.parse( t );
        DateTimeFormat formatter = DateTimeFormat.getFormat( defaultFormat );
        return formatter.format( date );
    }

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   * @param patternString
   * @return
   */
  public static DateTimeFormat getDateTimeFormat(String patternString)
  {
    DateTimeFormat result;
    
    if (FULL_DATE_PATTERN.equals(patternString))
    {
      result = DateTimeFormat.getFormat(PredefinedFormat.DATE_FULL);
    }

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            }
        } );


        // Check if there is a valid date set. If not, set this date.
        try {
            DateTimeFormat formatter = DateTimeFormat.getFormat( defaultFormat );
            Date date = formatter.parse( selectedDate );
            selectedDate = visualFormatFormatter.format( date );
        } catch ( Exception e ) {
            selectedDate = visualFormatFormatter.format( new Date() );
        }

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    ProgressDto progressDto = null;
    String process = "";
    String totalsituation = "";
    //Grid 1
    DateTimeFormat dateTimeFormat = DateTimeFormat.getFormat(Constants.DATE_FORMAT);
    NumberFormat numberFormat = NumberFormat.getFormat(Constants.NUMBER_FORMAT);
    String process_date = "";
    //String [] arrMois = mois.split(Constants.SEPRATE);
    for (int j = 0; j < list.size(); j++) {    
      progressDto = list.get(j);
      process_date = progressDto.getDate() != null ? dateTimeFormat.format(progressDto.getDate()) : "";
      process += (j+1) + Constants.SEPRATE + progressDto.getLabel() + Constants.SEPRATE +
      process_date + Constants.SEPRATE + numberFormat.format(progressDto.getCumule()) + Constants.SEPRATE + numberFormat.format(progressDto.getMois()) + 
      Constants.SEPRATE + numberFormat.format(progressDto.getCumule2()) + Constants.SEPRATE + numberFormat.format(progressDto.getMois2()) + Constants.SEPRATE;
    }

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    add(panel);
  }


  public static List<Stock> getCompanies() {
    DateTimeFormat f = DateTimeFormat.getFormat("M/d h:mma");
    List<Stock> stocks = new ArrayList<Stock>();
    stocks.add(new Stock("3m Co", 71.72, 0.02, 0.03, f.parse("4/2 12:00am"), "Manufacturing"));
    stocks.add(new Stock("Alcoa Inc", 29.01, 0.42, 1.47, f.parse("4/1 12:00am"), "Manufacturing"));
    stocks.add(new Stock("Altria Group Inc", 83.81, 0.28, 0.34, f.parse("4/3 12:00am"), "Manufacturing"));
    stocks.add(new Stock("American Express Company", 52.55, 0.01, 0.02, f.parse("4/8 12:00am"), "Finance"));
    stocks.add(new Stock("American International Group, Inc.", 64.13, 0.31, 0.49, f.parse("4/1 12:00am"), "Services"));
    stocks.add(new Stock("AT&T Inc.", 31.61, -0.48, -1.54, f.parse("4/8 12:00am"), "Services"));
    stocks.add(new Stock("Boeing Co.", 75.43, 0.53, 0.71, f.parse("4/8 12:00am"), "Manufacturing"));
    stocks.add(new Stock("Caterpillar Inc.", 67.27, 0.92, 1.39, f.parse("4/1 12:00am"), "Services"));
    stocks.add(new Stock("Citigroup, Inc.", 49.37, 0.02, 0.04, f.parse("4/4 12:00am"), "Finance"));
    stocks.add(new Stock(
        "E.I. du Pont de Nemours and Company", 40.48, 0.51, 1.28, f.parse("4/1 12:00am"), "Manufacturing"));
    stocks.add(new Stock("Exxon Mobil Corp", 68.1, -0.43, -0.64, f.parse("4/3 12:00am"), "Manufacturing"));
    stocks.add(new Stock("General Electric Company", 34.14, -0.08, -0.23, f.parse("4/3 12:00am"), "Manufacturing"));
    stocks.add(new Stock("General Motors Corporation", 30.27, 1.09, 3.74, f.parse("4/3 12:00am"), "Automotive"));
    stocks.add(new Stock("Hewlett-Packard Co.", 36.53, -0.03, -0.08, f.parse("4/3 12:00am"), "Computer"));
    stocks.add(new Stock("Honeywell Intl Inc", 38.77, 0.05, 0.13, f.parse("4/3 12:00am"), "Manufacturing"));
    stocks.add(new Stock("Intel Corporation", 19.88, 0.31, 1.58, f.parse("4/2 12:00am"), "Computer"));
    stocks.add(new Stock("International Business Machines", 81.41, 0.44, 0.54, f.parse("4/1 12:00am"), "Computer"));
    stocks.add(new Stock("Johnson & Johnson", 64.72, 0.06, 0.09, f.parse("4/2 12:00am"), "Medical"));
    stocks.add(new Stock("JP Morgan & Chase & Co", 45.73, 0.07, 0.15, f.parse("4/2 12:00am"), "Finance"));
    stocks.add(new Stock("McDonald\"s Corporation", 36.76, 0.86, 2.40, f.parse("4/2 12:00am"), "Food"));
    stocks.add(new Stock("Merck & Co., Inc.", 40.96, 0.41, 1.01, f.parse("4/2 12:00am"), "Medical"));
    stocks.add(new Stock("Microsoft Corporation", 25.84, 0.14, 0.54, f.parse("4/2 12:00am"), "Computer"));
    stocks.add(new Stock("Pfizer Inc", 27.96, 0.4, 1.45, f.parse("4/8 12:00am"), "Services"));
    stocks.add(new Stock("The Coca-Cola Company", 45.07, 0.26, 0.58, f.parse("4/1 12:00am"), "Food"));
    stocks.add(new Stock("The Home Depot, Inc.", 34.64, 0.35, 1.02, f.parse("4/8 12:00am"), "Retail"));
    stocks.add(new Stock("The Procter & Gamble Company", 61.91, 0.01, 0.02, f.parse("4/1 12:00am"), "Manufacturing"));
    stocks.add(new Stock("United Technologies Corporation", 63.26, 0.55, 0.88, f.parse("4/1 12:00am"), "Computer"));
    stocks.add(new Stock("Verizon Communications", 35.57, 0.39, 1.11, f.parse("4/3 12:00am"), "Services"));
    stocks.add(new Stock("Wal-Mart Stores, Inc.", 45.45, 0.73, 1.63, f.parse("4/3 12:00am"), "Retail"));
    stocks.add(new Stock(
        "Walt Disney Company (The) (Holding Company)", 29.89, 0.24, 0.81, f.parse("4/1 12:00am"), "Services"));
    return stocks;
  }

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    plants.add(new Plant("Cardinal Flower", "Shade", 7.81, "05/18/2006", false));
    return plants;
  }


  public static List<Stock> getCompanies() {
    DateTimeFormat f = DateTimeFormat.getFormat("M/d h:mma");
    List<Stock> stocks = new ArrayList<Stock>();
    stocks.add(new Stock("3m Co", 71.72, 0.02, 0.03, f.parse("4/2 12:00am"),
        "Manufacturing"));
    stocks.add(new Stock("Alcoa Inc", 29.01, 0.42, 1.47, f.parse("4/1 12:00am"),
        "Manufacturing"));
    stocks.add(new Stock("Altria Group Inc", 83.81, 0.28, 0.34, f.parse("4/3 12:00am"),
        "Manufacturing"));
    stocks.add(new Stock("American Express Company", 52.55, 0.01, 0.02,
        f.parse("4/8 12:00am"), "Finance"));
    stocks.add(new Stock("American International Group, Inc.", 64.13, 0.31, 0.49,
        f.parse("4/1 12:00am"), "Services"));
    stocks.add(new Stock("AT&T Inc.", 31.61, -0.48, -1.54, f.parse("4/8 12:00am"),
        "Services"));
    stocks.add(new Stock("Boeing Co.", 75.43, 0.53, 0.71, f.parse("4/8 12:00am"),
        "Manufacturing"));
    stocks.add(new Stock("Caterpillar Inc.", 67.27, 0.92, 1.39, f.parse("4/1 12:00am"),
        "Services"));
    stocks.add(new Stock("Citigroup, Inc.", 49.37, 0.02, 0.04, f.parse("4/4 12:00am"),
        "Finance"));
    stocks.add(new Stock("E.I. du Pont de Nemours and Company", 40.48, 0.51, 1.28,
        f.parse("4/1 12:00am"), "Manufacturing"));
    stocks.add(new Stock("Exxon Mobil Corp", 68.1, -0.43, -0.64, f.parse("4/3 12:00am"),
        "Manufacturing"));
    stocks.add(new Stock("General Electric Company", 34.14, -0.08, -0.23,
        f.parse("4/3 12:00am"), "Manufacturing"));
    stocks.add(new Stock("General Motors Corporation", 30.27, 1.09, 3.74,
        f.parse("4/3 12:00am"), "Automotive"));
    stocks.add(new Stock("Hewlett-Packard Co.", 36.53, -0.03, -0.08,
        f.parse("4/3 12:00am"), "Computer"));
    stocks.add(new Stock("Honeywell Intl Inc", 38.77, 0.05, 0.13, f.parse("4/3 12:00am"),
        "Manufacturing"));
    stocks.add(new Stock("Intel Corporation", 19.88, 0.31, 1.58, f.parse("4/2 12:00am"),
        "Computer"));
    stocks.add(new Stock("International Business Machines", 81.41, 0.44, 0.54,
        f.parse("4/1 12:00am"), "Computer"));
    stocks.add(new Stock("Johnson & Johnson", 64.72, 0.06, 0.09, f.parse("4/2 12:00am"),
        "Medical"));
    stocks.add(new Stock("JP Morgan & Chase & Co", 45.73, 0.07, 0.15,
        f.parse("4/2 12:00am"), "Finance"));
    stocks.add(new Stock("McDonald\"s Corporation", 36.76, 0.86, 2.40,
        f.parse("4/2 12:00am"), "Food"));
    stocks.add(new Stock("Merck & Co., Inc.", 40.96, 0.41, 1.01, f.parse("4/2 12:00am"),
        "Medical"));
    stocks.add(new Stock("Microsoft Corporation", 25.84, 0.14, 0.54,
        f.parse("4/2 12:00am"), "Computer"));
    stocks.add(new Stock("Pfizer Inc", 27.96, 0.4, 1.45, f.parse("4/8 12:00am"),
        "Services"));
    stocks.add(new Stock("The Coca-Cola Company", 45.07, 0.26, 0.58,
        f.parse("4/1 12:00am"), "Food"));
    stocks.add(new Stock("The Home Depot, Inc.", 34.64, 0.35, 1.02,
        f.parse("4/8 12:00am"), "Retail"));
    stocks.add(new Stock("The Procter & Gamble Company", 61.91, 0.01, 0.02,
        f.parse("4/1 12:00am"), "Manufacturing"));
    stocks.add(new Stock("United Technologies Corporation", 63.26, 0.55, 0.88,
        f.parse("4/1 12:00am"), "Computer"));
    stocks.add(new Stock("Verizon Communications", 35.57, 0.39, 1.11,
        f.parse("4/3 12:00am"), "Services"));
    stocks.add(new Stock("Wal-Mart Stores, Inc.", 45.45, 0.73, 1.63,
        f.parse("4/3 12:00am"), "Retail"));
    stocks.add(new Stock("Walt Disney Company (The) (Holding Company)", 29.89, 0.24,
        0.81, f.parse("4/1 12:00am"), "Services"));
    return stocks;
  }

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   * @param params
   * @return
   */
  protected String append(Object... params) {
    NumberFormat numberFormat = NumberFormat.getFormat(Constants.NUMBER_FORMAT);
    DateTimeFormat dateTimeFormat = DateTimeFormat.getFormat(Constants.DATE_FORMAT);
    String srcParam = "";
    for( Object param : params ) {
      if( param != null ) {
        if( param instanceof String ) {
          srcParam += param;
        }
        if( param instanceof Integer ) {
          srcParam += numberFormat.format(((Integer) param).intValue());
        }
        if( param instanceof Double ) {
          srcParam += numberFormat.format(((Double) param).doubleValue());
        }
        if( param instanceof Float ) {
          srcParam += numberFormat.format(((Float) param).floatValue());
        }
        if( param instanceof Date ) {
          srcParam += dateTimeFormat.format((Date) param);
        }
      }
      else {
        srcParam += "null";
      }

View Full Code Here

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