Java Development Tools

Hello there, i work for a government entity, Over the last 10 years we've developed a big financtial application using Oracle Forms and PL/SQL.
Recently following the web explosion, the CEOs decided to expand the application and move to the Web.

The core of our application its on PL/SQL, (80 % of business rules runs on DB). What we want to replicate on jdeveloper is this behavior: We have tables for USERS, ROLES and API_FORMS that builds the structure of the GUI.
For example almost any control of a GUI (Menus, Buttons, Input texts , etc) can be enabled/disabled, displayed/hidden depending the user role and module.

Right now we're pretty emerged on Jdeveloper's world, so we're very tempted to use TaskFlows, Dynamic Regions, etc. So would be nice if you could give some advices and best practices that can lead.

Thanks for your time!