DI4 is an all around tricky class, but we spent like 20 minutes going over useless admin/outline crap then left early if I remember correctly.
Never ever skip a regular lecture day for that class, unless you're really smart. Programming is a borefest for like the first week if you've done java before or you havn't forgotten it from highschool.
I wouldn't even bother going in on Thursday, but thats just me