Oh, nevermind I found it. paymentField is null. Look at where you initialized it. You created a new local variable instead of initalizing the global variable.
Type: Posts; User: aussiemcgr
Re: Code from textbook not working and I don't know why--Event-driven programming
Oh, nevermind I found it. paymentField is null. Look at where you initialized it. You created a new local variable instead of initalizing the global variable.
Re: Code from textbook not working and I don't know why--Event-driven programming
Hmm, interesting. None of your GUI objects should be throwing a Null Pointer there because the Container.add(Component) method throws a Null Pointer if the argument is null (meaning if you can add it...