Adobe Flex Supports (with J2EE)

Hi, We currently have one project in Adobe Flex with Java J2EE as the backend. There is a team working on this at this point of time but we may need your helps to support the project in the near future. Can you provide me with below? 1. Details of your experiences on Adobe Flex. 2. Do you have any experiences over Java J2EE (not mandatory but would be essential if you have it as we have many projects running on Java J2EE)? Thanks. Best Regards David H. Klickers