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From Ziggy <>
Subject Re: java shutdown hook and classpath
Date Thu, 07 Jan 2010 13:21:54 GMT
Usually when i get these kind of problems i try and put the jar files in the
tomcat common/lib folder to rule out class loader issues. Try and put the
libraries there as all jar files in that folder will be picked up.

On Thu, Jan 7, 2010 at 1:16 PM, David Wood <> wrote:

> Hi and Happy New Year!
> I have a library that uses JDBC and is being used within a my web app. The
> library and JDBC driver jars are in the web app's WEB-INF/lib directory.
> The library installs a Java shutdown hook, which ultimately uses the JDBC
> driver to do some clean ups in the database.   I'm getting a class not
> found error when trying to load the JDBC driver (in this case derby) in
> the hook.  I suspect this is because the shutdown hook has been called
> with a class loader that does not have access to WEB-INF/lib.
> Any thoughts or solutions?  Thanks.
> David Wood
> Policy Technologies Group
> IBM TJ Watson Research Center
> 914-784-5123 (office), 914-396-6515 (mobile)

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