"Give your first two tasks a GUI with the Swing toolkit. I want to enter a number representing the array size and get back the missing number between 1 and the number I give."
The way Netbeans handles the Swing toolkit is really cool and easy to learn. It’s a great way to quickly set up repeat processes. A lot of code is hidden where it says “Generated Code”.
I also fixed a bug where sometimes I got 0 as the missing number.