FULL PRODUCT VERSION :
java version "1.5.0_06"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_06-b05
Java HotSpot(TM) Client VM (build 1.5.0_06-b05, mixed mode, sharing)

and

java version "1.5.0_05"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_05-b05)
Java HotSpot(TM) Client VM (build 1.5.0_05-b05, mixed mode)

ADDITIONAL OS VERSION INFORMATION :
Microsoft Windows XP [Version 5.1.2600]

EXTRA RELEVANT SYSTEM CONFIGURATION :
Test running on a WinXP machine in the EST (GMT-5) timezone on 28 Mar 2006.

A DESCRIPTION OF THE PROBLEM :
Day of month is reported differently on the _05 build versus _06.

What has changed between versions?
Are there any other undocumented changes.

STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
Test program is below. Long value presented is midnight EST on 31 Mar 2008.

Run on _05 and _06 - expect the output to be the same - it isn't!


EXPECTED VERSUS ACTUAL BEHAVIOR :
EXPECTED -
Output on 05:

Eastern Standard Time
-18000000
America/New_York
March 30, 2008

Output on 06 :
Eastern Standard Time
-18000000
America/New_York
March 31, 2008
ACTUAL -
Expect to see 06 output.

REPRODUCIBILITY :
This bug can be reproduced always.

---------- BEGIN SOURCE ----------

package test;

import java.text.DateFormat;
import java.util.Date;
import java.util.TimeZone;

public class Test {

/**
* @param args
*/
public static void main(String[] args)
{
Date d2 = new Date(1206936000000L);
        DateFormat fmt = DateFormat.getDateInstance(DateFormat.LONG);

        System.out.println(TimeZone.getDefault().getDisplayName());
        System.out.println(TimeZone.getDefault().getOffset(new Date().getTime()));
        System.out.println(TimeZone.getDefault().getID());
        
        System.out.println(fmt.format(d2));
        

}

}

---------- END SOURCE ----------

CUSTOMER SUBMITTED WORKAROUND :
None found.