Java developers

I realize this community hasn't been updated in almost a year, and that it only has a few members. However, I'm going to risk it and attempt a shot in the dark.

I was a Java developer a few years ago and I haven't touched it in a while. I never had an IDE installed on my home computer, since I've never needed one. Now I'm suddenly feeling a strange craving to mess around and code something, for my own amusement. Can anyone recommend a lightweight, freeware IDE that I can use? I've been thinking of maybe installing IntelliJ.