Somebody mentioned in the class that they wanted to try using Hibernate for HW5. I wouldn't recommend that as it's kind of difficult to learn Hibernate on your own. But if you want to give it a try, here are the recorded lectures on Hibernate from CS520 in Spring 2013:

http://mediasite.calstatela.edu/mediasite/Viewer/?peid=f876dea69f72444cbabba0048d9a17e11d

http://mediasite.calstatela.edu/mediasite/Viewer/?peid=b5358fec18944f4186f867311035fa6c1d

And the lecture notes and sample code are attached below.