Using dinamically uploaded JARs within a JSP application

Question

Hi,
I'm developing an application that should allow users to upload dinamically JAR files
to be further used by the application (JSP pages use some bean that should be able to create instances of newly uploaded classes using Class.forName()). I'm using tomcat 3.2.1 as JSP container. Is there any way to cause tomcat recognize the uploaded classes without restarting (if I put the uploaded JARs in [mywebapp]/WEB-INF/lib, then they will be found after tomcat is restarted, but not on-fly)?
How can I inform tomcat's ClassLoader that it should use a new classpath (containing the uploaded JARs)
TIA,
/Sasha

Answer 1

That was the first thing I tried, but it doesn't work...
Tomcat uses a classpath that is constructed from the system classpath and some additions when the server is started, and changes to java.class.path property from the code have no effect on the real system classpath (after tomcat stops, the system classpath remains as it was before tomcat started) and on the ability to locate any files that were added during tomcat's run.
10x anyway.
/Sasha