In NetBeans IDE 6.9, a new NetBeans Platform sample will be included, already available in development builds. It should help you get started creating one of the most typical applications on the NetBeans Platform, i.e., a customer maintenance application:
Complete the above wizard and you will have a modular application, with this content:
To run it, start the sample database in the Services window:
Then run the application and you'll see this:
To see how everything fits together, see the NetBeans Platform CRUD Application Tutorial.