setvisible method in java swing hangs system

Question

I have banking gui application that I am currently working on and there seems to be a problem with the setvisible method for my jdialog. After the user has withdrawn a valid

Answer 1

camickr gives you correct answer. I want to add that you may not modify the UI outside the Event Dispatch Thread (as you do in #doInBackground), Swing is single threaded so violating this rule could lead to very tricky bugs and strange things in your UI.