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https://issues.apache.org/jira/browse/WICKET-3301?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Attila Király updated WICKET-3301:
----------------------------------

    Attachment: WICKET-3301.patch

Attaching patch that fixes some of the creations of SimpleDateFormat-s.

Fixed in:
o.a.w.extensions.yui.calendar.AbstractCalendar: deleted the instances. They 
were not used and as SimpleDateFormat is not thread safe having it in public 
static final variables was not good anyway.

o.a.w.util.time.AbstractTime and o.a.w.util.time.Time: these classes are using 
SimpleDateFormat in a static way (static variable or method) so I added 
Locale.ENGLISH to the constructors.

With the patch all tests pass including o.a.w.util.time.TimeTest.test().

What the patch does not fix but I think should be done (but it needs decision 
on the wicket team side):
o.a.w.validation.validator.DateValidator.MaximumValidator.variablesMap(IValidatable<Date>)
o.a.w.validation.validator.DateValidator.MinimumValidator.variablesMap(IValidatable<Date>)
o.a.w.validation.validator.DateValidator.RangeValidator.variablesMap(IValidatable<Date>)
o.a.w.extensions.yui.calendar.DatePicker.configure(Map<String, Object>, 
IHeaderResponse, Map<String, Object>)
o.a.w.devutils.inspector.LiveSessionsPage
o.a.w.devutils.inspector.RequestsPage

These are not static usages and because of this maybe they should use the 
client.


> SimpleDateFormat-s should be created with Locale defined in constructor
> -----------------------------------------------------------------------
>
>                 Key: WICKET-3301
>                 URL: https://issues.apache.org/jira/browse/WICKET-3301
>             Project: Wicket
>          Issue Type: Bug
>          Components: wicket, wicket-datetime
>    Affects Versions: 1.5-M3
>            Reporter: Attila Király
>         Attachments: WICKET-3301.patch
>
>
> The wicket-core junit test o.a.w.util.time.TimeTest.test() fails on computers 
> where the default locale strings for "Am/pm marker" is not am/pm. The reason 
> for this is that wicket uses SimpleDateFormat(String pattern) constructor 
> instead of SimpleDateFormat(String pattern, Locale locale) in a lot of places 
> and so the system default locale is used.
> I think for consistent results wicket should always specify a locale and not 
> depend on the system default.

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