I agree with jps. It also sounds to me like you've created a user interface using Netbeans' GUI Builder, and you don't know what to do with it, how to make it useful. That's a common place to be. The GUI Builder makes creating a decent user interface "easy," but making the interface useful is often more about knowing how to use Netbeans than knowing how to program in Java. Even if I outlined the steps in Java to display db data in the interface, I'm assuming it wouldn't help you, because you don't know Java. And I know Java, but I don't know Netbeans.
If you want to stay on your current path, then find the Netbeans tutorials that show how to do what you need to do or join a Netbeans forum and ask there. There's an IDE area here on JPF you might try. If you would rather learn to code Java GUIs by hand, then leave the GUI Builder for now and start working the Swing tutorials
. Actually, that link may be a good start for either approach, depending on how you execute the lessons there. Even if you decide the GUI Builder is the way to go, knowing how to program some Swing by hand will be very useful.