Hi there.. I will be working on some tutorials during the following weeks. Probably you will be interested on those..
Right now I have this application that is using jBPM5, Drools Expert and Drools Fusion.. If you know how to code jsp and servlets it will be easy to adapt the application to run in a servlet container. Now the application is based on swing beacause we use Slick 2d that is a graphic library.
https://github.com/Salaboy/drools-demo-application
and some posts explaining how it works:
http://salaboy.wordpress.com/2011/01/01/emergency-service-drools-application/
http://salaboy.wordpress.com/2010/12/23/javaone-2010-brazil-speaker-notes-slides/
http://salaboy.wordpress.com/2010/12/23/drools-at-javaone-brazil-2010/
PS: just as a suggestion, try to ask for specific things. A complete example about a complete application it's hard to get..
Greetings!