About Java for OS X 2012-005
Summary
Java for OS X 2012-005 delivers improved security, reliability, and compatibility for Java SE 6. Java for OS X 2012-005 supersedes all previous versions of Java for OS X.
This update configures the Java plug-in to deactivate when no applets are run for an extended period of time. If the previous update named "Java for OS X Lion 2012-004" was not installed on your computer, this update will disable the Java web plug-in immediately. Re-enable Java applets by clicking the region labeled "Inactive plug-in" on a webpage.
This release updates Java SE 6 to version 1.6.0_35.
This release is for OS X versions 10.7 or later.
Important: Information about products not manufactured by Apple is provided for information purposes only and does not constitute Apple’s recommendation or endorsement. Please contact the vendor for additional information.
Read more http://support.apple.com/kb/HT5367