This week's book giveaway is in the OCAJP forum. We're giving away four copies of OCA Java SE 8 Programmer I Study Guide 1Z0-808 and have Jeanne Boyarsky & Scott Selikoff on-line! See this thread for details.
The java process/instance of jvm associated with it will be still runnning, you can just logoff and login, i wouldn't recommend killing the java process from task manager as lots of other applications also use java !!!