December 9th, 2012, 09:10 PM
What variable has a null value at line 34? Find the variable and make sure it gets assigned a valid value.
Did you copy the code from post#14? It didn't have any problems.
I'm done for tonight. Back tomorrow.
December 10th, 2012, 06:09 AM
You may not have instantiated the autoPmtPanel and the autoButtonPanel before actionPerformed() method is invoked by JVM when the button is clicked. You should somehow instantiate an instance for each of them or comment out lines 34 - 35.
When the programming world turns decent, the real world will turn upside down.