format dates in specific timezone

[mariyan nenchev]

Hi,

How can i format dates in gwt for specific time zone like "GMT+2" for example.

Regards.

[Ashwin Desikan]

You can use the DateTimeFormat function defined in the  com.google.gwt.i18n.client.DateTimeFormat to specify the format.

check out the http://gwt.google.com/samples/Showcase/Showcase.html#!CwDateTimeFormat example in showcase on how to set the various formats

regards
Ashwin

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[mariyan nenchev]

I don't need to change the format, i want to format the date according to timezone.

DateTimeFormat has method format with args date and timezone, but i don't know how to pass GMT like time zone for example GMT+1, GMT+0, GMT-2 etc...

This is throwing exception that GMT+1 is unknown. This is because createTimeZone method is receiving strings from TimeZoneConstants and i can't use them.

Regards.

 DateTimeFormat.getShortDateFormat().format(new Date(System.currentTimeMillis()), TimeZone.createTimeZone("GMT+1"))

[Sydney]

TimeZone.createTimeZone(TimeZoneInfo.buildTimeZoneData(TimeZoneConstants.europeParis()));

Not tested

[Sydney]

If you want to use GMT+1 timezone style I guess you need to do some kind of mapping.

[mariyan nenchev]

I don't want to make mappings manually. 

It's very funny that such thing can't be done with gwt.

On Thu, Aug 25, 2011 at 11:05 PM, Sydney <sydney....@gmail.com> wrote:

If you want to use GMT+1 timezone style I guess you need to do some kind of mapping.

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[Palo G.]

Hi, I found this discussion after hours of thinking and googling same
problem. We have simple problem that turned out to be a huge problem
in GWT. There is no tool that can get client time zone and return that
bloody TimeZoneInfo instance.

So I have to ask if you had found some solution or how did you end up?

thanks

[Stevko]

I've been doing the same research deep dive and came up with this
nugget of code

final TimeZoneConstants timeZoneConstants =
GWT.create(TimeZoneConstants.class);
TimeZone usPacific = TimeZone.createTimeZone(

TimeZoneInfo.buildTimeZoneData(timeZoneConstants.americaLosAngeles()));
Date dt = new Date(2007 - 1900, 7 - 1, 1);
assertTrue(usPacific.isDaylightTime(dt));
assertEquals("PDT", usPacific.getShortName(dt));
assertEquals("Pacific Daylight Time", usPacific.getLongName(dt));

from http://code.google.com/p/google-web-toolkit/source/browse/trunk/user/test/com/google/gwt/i18n/client/TimeZoneTest.java?r=3655