Hi Majid,
On 27-05-2012 05:37:32 -0700, Majid Azimi wrote: [snip]
But there is no difference between timestamps in database
and timestamps after converting time zone in application. Could anyone help? Is this the wrong way to convert TimeZone?
I'm not sure I understand what you want. The example code you showed looked daft, since you seem to be changing timezones on the fly.
The Driver accomodates for your timezone, that is, the timezone that's default in your JVM when it makes a connection to the database. If you want to use another timezone for timestamps/times/dates than the default of your JVM, then set the desired timezone before creating a new connection to the database (DriverManager.getConnection()).
If you have a scenario where many timezones are involved in retrieving and storing timestamps, you probably best use TIMESTAMP WITH TIMEZONE instead to save yourself a lot of trouble.
Fabian