How to upgrade my application?

Hi
Can any one explain me how to upgrade my application in webstart.
Is it enough to chang the Jar of my application in the server? or have I to mention in on JNLP file too?.Is there any tag to mention the version of application in Jnlp file?. Explain me how web start in the client side automaticaly upgrade the latest version?
Thanks in advance.
regards,
selva.

First of all the easiest way of upgrading your application is by just replacing the jar file. WebStart compares the Timestamps of the Jar File the Client has and the Jar File the server has. If the Jar File on the Server is newer then the new file is downloaded.
A safer way is to use versioned based download.There is a tag (version=) but you have to obey som rules if you want to use versioned downloads. Best described are these methods in the JNLP Specs and in the WebStart developers Pack.
Hpe that helps
Cu

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