Java EE authentication and authorization is more powerful and easier to use than expected. The recent Java Magazine article Secure Java EE Authentication covers Java EE security principles, dynamic and static authentication, as well as extension possibilities.
See also wisdomator--a companion, maven 3 sample application.
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See you at Java EE Workshops at MUC Airport!
NEW: Online Workhop Effective WebApps without Frameworks is also coming to: MUC Airport.