Im working on a project similar to custom database app tutorial of NetBeans (
http://www.netbeans.org/kb/docs/java/gui-db-custom.html)
When I try to add new record to detail table i get he error:
There are a lot of errors too, but that may be enough. If not i can post it too.
I've just followed the instructions in the tutorial to trace the problem and they are all the same. I couldn't find the problem.