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Strip it, compile it, test it. Then post it.

That doesn't look like it will compile.

I can not compile the code as it is posted. If I can't compile the code I can not test it.

If you want help, you need to post a SSCCE that compiles, executes and shows the problem.



I assume...

The posted code does not compile without errors.
One error is the missing }s at the end
Another is there are many undefined packages:
package org.jdesktop.application does not exist

Another...

Post the SSCCE in the forum just like the code you posted earlier in post#10. Wrapped in code tags.

It makes it hard to compile, execute and test the code without a SSCCE.

Make a SSCCE driver with hardcoded values that executes the above code that has the error. It needs to define all the...

There is a variable with a null value when the code at line 46 executes which causes this exception.
Look at line 46, find the variable with the null value and then backtrack in the code to see why...