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Question on ClassLoaders

Saathvik Reddy
Ranch Hand

Joined: Jun 03, 2005
Posts: 228

I want to on how websphere app. server will handle this issue
If I have two projects A & B deployed as two different war files a.war and b.war files to the same app. server.
a.war file has lib/hibernate/hibernate3.jar
b.war file has lib/hibernate/hibernate2.jar

both the projects use hibernate api. My question is does app. server load both the jar files and execute each jar against each project? or does it load only one jar file and both project uses the same jar file??

Thanks in advance
Cameron Wallace McKenzie
author and cow tipper
Saloon Keeper

Joined: Aug 26, 2006
Posts: 4968

Just so you know, with a standard classloader configuration, each war file will use its own set of jar files, so one will use h2, the other will use h3.

Here's a tutorial on Understanding WebSphere Classloaders for more information


-Cameron McKenzie
Saathvik Reddy
Ranch Hand

Joined: Jun 03, 2005
Posts: 228
Thanks a lot. Really a very good resource.
I agree. Here's the link:
subject: Question on ClassLoaders
It's not a secret anymore!