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https://issues.apache.org/jira/browse/LANG-538?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13766132#comment-13766132
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Christian P. MOMON commented on LANG-538:
-----------------------------------------
Hi. This bug is existing in version 3.3.1. The "assertEquals("dateTime",
dateTime, format.format(cal));" from the test above returns the following error:
org.junit.ComparisonFailure: dateTime expected:<2009-10-16T[16]:42:16.000Z> but
was:<2009-10-16T[08]:42:16.000Z>
Reproduced whit Sun Java version: 1.6.0_45 and 1.7.0_21 on Fedora 17 (Linux
3.9.10-100.fc17.i686.PAE).
I will try to clone this issue.
> DateFormatUtils.format does not correctly change Calendar TimeZone in certain
> situations
> ----------------------------------------------------------------------------------------
>
> Key: LANG-538
> URL: https://issues.apache.org/jira/browse/LANG-538
> Project: Commons Lang
> Issue Type: Bug
> Components: lang.time.*
> Affects Versions: 2.4
> Environment: Sun JDK6, RHEL 5.3
> Reporter: Jeff Peterson
> Fix For: 2.5
>
>
> If a Calendar object is constructed in certain ways a call to
> Calendar.setTimeZone does not correctly change the Calendars fields. Calling
> Calenar.getTime() seems to fix this problem. While this is probably a bug in
> the JDK, it would be nice if DateFormatUtils was smart enough to
> detect/resolve this problem.
> For example, the following unit test fails:
> {noformat}
> public void testFormat_CalendarIsoMsZulu() {
> final String dateTime = "2009-10-16T16:42:16.000Z";
> // more commonly constructed with: cal = new GregorianCalendar(2009, 9,
> 16, 8, 42, 16)
> // for the unit test to work in any time zone, constructing with GMT-8
> rather than default locale time zone
> GregorianCalendar cal = new
> GregorianCalendar(TimeZone.getTimeZone("GMT-8"));
> cal.clear();
> cal.set(2009, 9, 16, 8, 42, 16);
> FastDateFormat format =
> FastDateFormat.getInstance("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'",
> TimeZone.getTimeZone("GMT"));
> assertEquals("dateTime", dateTime, format.format(cal));
> }
> {noformat}
> However, this unit test passes:
> {noformat}
> public void testFormat_CalendarIsoMsZulu() {
> final String dateTime = "2009-10-16T16:42:16.000Z";
> GregorianCalendar cal = new
> GregorianCalendar(TimeZone.getTimeZone("GMT-8"));
> cal.clear();
> cal.set(2009, 9, 16, 8, 42, 16);
> cal.getTime();
> FastDateFormat format =
> FastDateFormat.getInstance("yyyy-MM-dd'T'HH:mm:ss.SSS'Z'",
> TimeZone.getTimeZone("GMT"));
> assertEquals("dateTime", dateTime, format.format(cal));
> }
> {noformat}
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