I have uploaded a short supplement to the slides for Lecture 4 that talks about Java threads in a bit more detail. I'll review this supplement tomorrow while I work to finish off the material from Lecture 4 that we didn't get to on Thursday.
Note: I'll be producing slides that are assigned to be covered on certain days of the semester. As you have seen, I will often not be able to cover everything that was slated to be discussed for a particular lecture. But, no worries, my tentative plan for the semester shown in Lecture 1 was just an initial attempt to plot out the course. Our actual trajectory through the material will be more fluid than what was presented in that plan. So, please be flexible as I chart my way through THREE new textbooks! (Why do I do this to myself?!)