I'm using weblogic 7, and try to deal with security providers.

I need a third kind of Principal that I've made: MEXPrincipalImpl that
I use with
weblogic.security.principal.WLSGroupImpl
weblogic.security.principal.WLSUserImpl

When I try to use it I got a java.lang.ClassNotFoundException
MEXPrincipalImpl.
This principal is packed in my custom security providers' jar in :
/weblogic700/server/lib/mbeantypes

I call the wls authenticate method from a Web start client.

I've tried to put a jar file with this principal in the classpath of
the WLS Server but no success.

Any idea ?

Thanks