Re: Possible to treat time in milliseconds as a different time zone?

From:

=?ISO-8859-1?Q?Arne_Vajh=F8j?= <arne@vajhoej.dk>

Newsgroups:

comp.lang.java.programmer

Date:

Tue, 21 May 2013 11:23:15 -0400

Message-ID:

<519b9164$0$32104$14726298@news.sunsite.dk>

On 5/21/2013 10:58 AM, laredotornado@zipmail.com wrote:

I'm using Java 6. I'm trying to see if there's a simple way to convert a long varaible (the number of milliseconds since 1970) to a timezone other than GMT. I have another time zone string, MY_TIMEZONE, which could be a timezone string ("GMT-5"), but I'm figuring out this doesn't work ...

     long timeInMs = 1368921600000;
     final Calendar cal = Calendar.getInstance();
     cal.setTimeZone(TimeZone.getTimeZone(MY_TIMEZONE));
     cal.setTimeInMillis(timeInMs);
     final java.util.Date dateObj = cal.getTime();
     System.out.println(dateObj.toString());

Can I parse the time zone string to get the number of hours difference and then just add that? Grateful for any elegant solutions.

The idea sounds wrong to me.

In Java time stored in a long is supposed to be in UTC. And there are
various classes to convert to and from time components based on time
zones.

Inventing a ms since 1970 local time concept would create massive
confusion in the code base.

Arne