If you have not yet installed Apple's Java OS X 2012-006 update, then you are still using a version of Apple Java 6 that includes the plug-in and the Java Preferences app. See 'Note for Users of OS X that Include Apple Java 6 Plug-in'.

Java for Mac OS X 10.6 Update 17 delivers improved security, reliability, and compatibility by updating Java SE 6 to 1.6.0_65. This update enables per-website control of the Java plug-in within Safari 5.1.9 or later. Please quit any web browsers and Java applications before installing this update. See for more details about this update. See for information about the security content of this update. Keep your software up to date.

If you need Java, download the latest version of Java for OS X directly from Oracle.