Wow. I should have caught that. Thanks a million for all of the help. I have made some changes to my code, including your advive. I attempted to compile and run, however, I received a "NoSuchElement" error. So, I added exception handling code to handle the error, however, now I receive the NullPointerException, in line 97 and 13 in main. I am not quite sure how to correct this error.
You have to create the label before you do anything to it.
If I might offer a word of advice. I think it's going to prove pretty confusing if you mix your graphical input with console input. You are prompting the user inside the GUI, but you are expecting them to enter numbers at the command prompt. It will be easier for you and the user if you are consistent and just use the GUI. You could prompt the user to enter their value in the textfield and have a button on the GUI that they can click when they have finished.
Thanks a million for all of your suggestions! This is really starting to make a little more sense to me!
I did add the text field and an action listener. I am now getting an error message in the last bracket of the Action Listener. I am not quite sure what to do. Your expert advice is greatly appreciated!