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From: loial <jldunn2...@gmail.com>
Newsgroups: comp.lang.java.programmer
Subject: Timezones and versions of Java
Date: Mon, 23 May 2011 07:38:54 -0700 (PDT)
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I am trying to convert BST times to EST.

The following code correctly returns a difference of 5 hours between
the 2 times when run under Java 1.5. :

Local Offset 3600000
EST Offset -14400000
EST time Tue May 04 07:48:18 2010
BST time Tue May 04 12:48:18 2010


However if run under Java 1.6 (on the same machine), it returns a time
difference of 6 hours :

Local Offset 3600000
EST Offset -18000000
EST time Tue May 04 06:48:18 2010
BST time Tue May 04 12:48:18 2010


Do I need to do something different in Java 1.6?.

Platform is linux.






class testtz {
    public static void main(String[] args) {


       Date date = null;

       SimpleDateFormat dateFormat = new
SimpleDateFormat("yyyyMMddHHmmss");

       try {

            date = dateFormat.parse("20100504124818");
       }
       catch(ParseException pe) {
           System.out.println("Error");
       }

       TimeZone tz1 = TimeZone.getDefault();

       long localOffset = tz1.getOffset(date.getTime());

       System.out.println("Local Offset " + localOffset);

       TimeZone tz2 = TimeZone.getTimeZone("EST");

       long remoteOffset = tz2.getOffset(date.getTime());

       System.out.println("EST Offset " + remoteOffset);


       Date dateToPutInDB = new Date(date.getTime() - localOffset +
remoteOffse;


       System.out.println("EST time " + dateToPutInDB)

       System.out.println("BST time " + date);



   }

}