JNLP On-Demand download

[Vijay Simha]

I have an issue with JNLP DownloadService. I'm trying to write code to download jar files when it is required.
For eg: If user clicks on a button it'll open a frame all frame data is in a jar. first code checks if that jar is available in cache or not if not it downloads.
Now the problem is once jar file is downloaded, if we update the jar file on server, the new file is not getting updated to the cache.

How to solve this, please help me out

Regards,
Vj