Hi, Olivia. Do you really need Java ? Most people don't, and it can be a source of security risks.
http://blogs.msdn.com/b/securitytipstalk/archive/2013/01/28/watch-out-for-fake-java-updates.aspx
If you received a pop-up warning for Fake Java Update while you were surfing a website, chances are that the malware was blocked and there's nothing to remove.
However, If you do have any problems, it might be wise to try one of the free malware removal forums we recommend, where an expert will work one on one to clean your system, if required.
http://www.bleepingcomputer.com
http://forums.whatthetech.com/
http://www.geekstogo.com/forum/
http://www.cybertechhelp.com/forums/