Currently Being ModeratedJun 20, 2012 7:37 PM (in response to seadogdcj1)
You canot uninstall it. Reinstall the system is the only way to "undo" it or revert to a backup you have prior to the update if you have one.
The update may have turned java off. Have you checked that in the Java Preferences (in utilities)?
Currently Being ModeratedJun 20, 2012 7:43 PM (in response to seadogdcj1)
This is a bit late for you, but I always take a CarbonCopyClone backup before any major (EFI, Java, security, etc) update. And usually before any other kind of backup even for iTunes or iPhoto (which I do not use).
Currently Being ModeratedJun 21, 2012 2:46 AM (in response to seadogdcj1)
In general, you should not avoid installing or 'undoing' this or any other update that improves the security of your Mac. If you do, you leave it vulnerable to publicized security weaknesses that might be exploited by some malware author, in this case several weakness in the security of the Java runtime environment. (See http://support.apple.com/kb/HT5319 for more about that.)
As X423424X mentioned, the update has turned Java off in web browsers. Reenable it as he suggests by checking the box in Java Preferences, as shown below:
Note that you have to quit & relaunch the browser for the change to take effect.
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