Halp on Java program, win Internets.

This crap should be easy for anyone good at Java. Too bad I fucking suck at programming in general. Help me out and I will reward you in any way possible.

Here's the assignment: http://people.uncw.edu/pattersonl/121/labs/final.htm

Please, don't fail me /prog/

>>13
Well, to be fair, writing GUI applications are much more difficult then writing theoretical, albeit useless, meta interpreters. In Java Swing, you need to take care of event handling, window property settings, setting the window title, handling keyboard input, populating data in combo boxes, etc etc...
I would say that both exercises are actually about the same in terms of difficulty.