Henri Yandell wrote on Monday, March 06, 2006 9:02 AM:
> This seems like a useful class to me. Any reason not to add it?
>
> http://issues.apache.org/bugzilla/show_bug.cgi?id=38772
It's way from complete. While some ISO8601formats are quite obscure, using UTC
is really common, otherwise you're dependend on a time zone. With JDK 1.4 you
can mimik this using the 'Z' formatting symbol ... but that does not exist in
JDK 1.3 (but in lang.FastDateFormat). Personally I have extended
SimpleDateFormat to handle a lot of the ISO8601 (and to be able to use the
symbols of ISO 8601 to define a format):
public void testAllStandardFormatter() {
final Calendar calendar = Calendar.getInstance();
calendar.setTimeZone(TimeZone.getTimeZone("Europe/Berlin"));
calendar.setTimeInMillis(50);
calendar.set(1968, Calendar.MAY, 28, 13, 30, 10);
final Date date = calendar.getTime();
assertEquals("680528", ISO8601DateFormat.BASIC_DATE.format(date));
assertEquals("1968-05-28",
ISO8601DateFormat.EXTENDED_DATE.format(date));
assertEquals("133010", ISO8601DateFormat.BASIC_TIME.format(date));
assertEquals("13:30:10", ISO8601DateFormat.EXTENDED_TIME.format(date));
assertEquals("133010,050",
ISO8601DateFormat.BASIC_TIME_FRACTION.format(date));
assertEquals("13:30:10,050",
ISO8601DateFormat.EXTENDED_TIME_FRACTION.format(date));
assertEquals("123010Z", ISO8601DateFormat.BASIC_TIME_UTC.format(date));
assertEquals("12:30:10Z",
ISO8601DateFormat.EXTENDED_TIME_UTC.format(date));
assertEquals("123010,050Z",
ISO8601DateFormat.BASIC_TIME_UTC_FRACTION.format(date));
assertEquals("12:30:10,050Z",
ISO8601DateFormat.EXTENDED_TIME_UTC_FRACTION.format(date));
assertEquals("123010+0000",
ISO8601DateFormat.BASIC_TIME_OFFSET.format(date));
assertEquals("12:30:10+0000",
ISO8601DateFormat.EXTENDED_TIME_OFFSET.format(date));
assertEquals("680528T133010",
ISO8601DateFormat.BASIC_DATE_TIME.format(date));
assertEquals("1968-05-28T13:30:10",
ISO8601DateFormat.EXTENDED_DATE_TIME.format(date));
assertEquals("680528T133010,050",
ISO8601DateFormat.BASIC_DATE_TIME_FRACTION.format(date));
assertEquals("1968-05-28T13:30:10,050",
ISO8601DateFormat.EXTENDED_DATE_TIME_FRACTION.format(date));
assertEquals("680528T123010Z",
ISO8601DateFormat.BASIC_DATE_TIME_UTC.format(date));
assertEquals("1968-05-28T12:30:10Z",
ISO8601DateFormat.EXTENDED_DATE_TIME_UTC.format(date));
assertEquals("680528T123010,050Z",
ISO8601DateFormat.BASIC_DATE_TIME_UTC_FRACTION.format(date));
assertEquals("1968-05-28T12:30:10,050Z",
ISO8601DateFormat.EXTENDED_DATE_TIME_UTC_FRACTION.format(date));
assertEquals("680528T123010+0000",
ISO8601DateFormat.BASIC_DATE_TIME_OFFSET.format(date));
assertEquals("1968-05-28T12:30:10+0000",
ISO8601DateFormat.EXTENDED_DATE_TIME_OFFSET.format(date));
}
That would be an IMHO an interesting extension to lang (since FastDateFormat
provides the necessary functionality and DateRangeUtils already deal with
ISO8601 symbols). WDYT?
- Jörg
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