settimezone on gregorian calendar doesn't work !!

[samantha clarkson]

Hello, i have a gregorian calendar, i apply a timezone, then i retrieve the date, but it's displayed in GMT timezone , what can i do for retrieving a date from a calendar with a specified timezone .
After, i have to use a jcalendar which display the time coresponding to the time zone of the server machine.

Code :
TimeZone tz = TimeZone.getTimeZone("America/Caracas");
System.out.println("TZ ID : "+tz.getID());
System.out.println("TZ display name : "+tz.getDisplayName());
GregorianCalendar c = new GregorianCalendar();
c.setTimeZone(tz);
System.out.println("c TZ ID : "+c.getTimeZone().getID());
System.out.println("c TZ display name : "+c.getTimeZone().getDisplayName());
System.out.println("c time : "+c.getTime().toString());

Output :
TZ ID : America/Caracas
TZ display name : Heure du Venezuela
c TZ ID : America/Caracas
c TZ display name : Heure du Venezuela
c time : Sun May 31 13:16:08 GMT 2009

Thanks .

[Steve Luke]

The problem isn't that the Calendar's TimeZone isn't working. It is that you are printing the results in your computer's local time zone. You should use a DateFormatter to make sure the date is displayed in the same time zone the Calendar is maintained in:

    void displayAndFormatTime(Date time, TimeZone tz)
    {
        DateFormat formatter = DateFormat.getDateTimeInstance(DateFormat.FULL, DateFormat.FULL);
        formatter.setTimeZone(tz);
        
        System.out.println("Time is "+formatter.format(time));
    }

    ...
        TimeZone timeZone = TimeZone.getTimeZone("America/Caracas");
        Calendar cal = Calendar.getInstance(timeZone);
        displayAndFormatTime(cal.getTime(), cal.getTimeZone());
    ...