Plug in framework for a Java EE 5 application

Hi all,

I am a newbie to Java EE and have a question regarding plug ins. I would like to write a Java EE application supporting customer plug-ins. The idea is to provide an interface definition and a simple class implementing this interface. The customer can deploy and use the app with this simple functionality, but if he wants to develop different classes implementing the same interface, he can deploy his jar files and the application would be able to use them. What is the proper way to do this?

Is it also possible to have the new modules deployed and used without restarting the application?

[618 byte] By [flo.blanca] at [2007-10-2 23:50:12]