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From Mark Shaw <>
Subject RE: Design question: common/lib --> WEB-INF/lib
Date Sat, 06 Apr 2002 00:24:28 GMT
> ClassLoader webappLoader =
>   Thread.currentThread().getContextClassLoader();
> Class webappClass = webappLoader.loadClass("com.mycompany.MyClass");

> This works because the container (Tomcat in this case) always sets the
thread context class loader to the one 
> for the webapp being executed on the current request thread -- therefore,
the classes in /WEB-INF/classes and 
> /WEB-INF/lib are visible via this class loader, even though the class
containing the above code is loaded
> from somewhere else.

I still get a ClassNotFoundException.  I've implemented a Realm that extends
RealmBase.  My code that references the webapp class is in getPassword().
I'm assuming that this is called from a request thread?
What's interesting is that loadClass() doesn't throw the exception, but then
I try to call webappClass.newInstance(), a ClassNotFoundException is thrown?

Any ideas?  Thanks.

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