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desktop database app problem, need help...  RSS feed

Gokcen Guner
Posts: 9
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I have a project due to tomorrow. I'm following the tutorial about custom desktop app with netbeans. I couldnt find any answer anywhere. I think you are the guys that i should ask that.

I created a new detail table that is binded to master table also. its content changes according to selected row in the master table. I added a button to add a new entry to this new detail table. I followed the propertychange support steps in the tutorial same as the original detail table. But it doesnt work.
The exception is here:

The reason of the error is null value returned by getTrialConfirmed() method.

The action performed when button pressed is that:

As you can see the code is same as the one in the tutorial.
The frame opens and I add the data but when refreshed it is gone.

Where is my fault?
With a little knowledge, a cast iron skillet is non-stick and lasts a lifetime.
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