This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
1) What you have downloaded, are you sure those are class files and not source files? If they are source (java) files, you will need to compile them.
2) I do not use Netbeans. In eclipse, even if I physically place some third party jar inside my project, I still need to explicitly need to add that jar to the class path. Does netbeans have anything similar?
Your question seems more to be IDE related than Swing related. I will move it over to the proper forum for you.
1) I have downloaded the jars which, in-turn, contains all of the class files needed. I have added the three needed jars to my library.
2) Yeah I'm considering just switching back to eclipse. I'm not entirely sure about the classpath, I'm doing some research now.