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Applying patch in java web application

Abhi Agg

Joined: Dec 22, 2008
Posts: 2
I have web application deployed in tomcat.
I need to provide way to apply patches(bug fixes) by just copying the patched jar files in some patch folder.
How to override the loading of regular WEB-INF/lib jar file with the CATALINAHOME/patch jar file?

William Brogden
Author and all-around good cowpoke

Joined: Mar 22, 2000
Posts: 12682
It makes no sense to fiddle with a patch folder, just stop the application, replace the jar files directly and restart the application.

The Tomcat management app has simple commands to start and stop applications.


Java Resources at
Abhi Agg

Joined: Dec 22, 2008
Posts: 2
Actually our product is deployed using tomcat and customer is directly using it.
So it would be tough and confusing for user to navigate through the webapp directory structure and apply the patch.
Ulf Dittmer

Joined: Mar 22, 2005
Posts: 39553
Are you saying that the users are creating patches for the software supplied by your company? That's rather an unusual way of doing things, isn't it?

Ping & DNS - updated with new look and Ping home screen widget
I agree. Here's the link:
subject: Applying patch in java web application
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