Falling Behind In Java?

I got an A on my midterm, but fear that employment and Penguicon might start getting in the way of my education. This concerns me deeply.

For instance, instead of working on the homework that is due Wednesday, I chose to spend both days of the weekend working on Penguicon almost non-stop at the homes of zifferent, delosd and rbradakis, and the storage cube.

Work will let me leave at 3:00 PM on days I have class, if I arrive at work at 7:30 AM. So I got up at 5 AM.

Due to traffic and fueling, it took an hour and a half to drive from work to my Java class that starts at 4:00, so I actually arrived at 4:30. Unfortunately I also had to miss all two hours of the last class in order to work my first day on the job. It's been half an hour here, and I realized that having missed the last two and a half hours of instruction has left me totally lost on what we are currently doing. So, I am spending the time mostly reading my textbook on the topic, interfaces and implementing in Swing, which is Java's graphical-user-interface extension.

edit: It now appears the class finally covered Arrays while I was not looking.