Thanks for Drjava, it's excellent!
I am not able to see the video of these tutorials. If I could it is really a good job
Running windows 7 on a Toshiba laptop. Downloaded and installed DrJava a couple of days ago. Today, while running Ccleaner, MSE flagged a trojan: C:\Users\...\AppData\Local\Temp\dVEk2H4s.exe.part (TrojanDownloader:Win32/Brantall.D. When I searched for the file it had been deleted but the containing folder also had DrJava files, drjava-junit8522475461853251684 for instance. The user environment I used has only user privileges and I use if for only sites that I know are safe. I use another limited privileges id if I think a site I might visit is dodgy. So it appears the trojan was installed with DrJava.