Updating internet browser
Mozilla applications are regularly updated for security and stability; however, Mozilla does not provide updates for plug-ins.
Plug-ins can cause crashes and hangs and may contain security vulnerabilities.
In such cases, you can access the 32-bit Java Control Panel for Java 7 by running C:\Program Files (x86)\Java\jre7\bin\(press "Windows key R" to open the Run box).
Alternately, you can update Java using the manual update method (see below) by downloading the latest update.
  If you prefer an offline installation, go to the Java Downloads page (see above for links) and save the Windows Offline installer to any convenient location, close your browser and run the installer.
 Starting with Java 6 Update 10, Java updates patch the current version by default instead of adding an additional version.
De-selecting this option will prevent Java applets from running in any browser and the Java plugin will no longer appear in the Firefox or Sea Monkey Add-ons Manager or about:plugins list.
To view or change this option, click the Java icon in the Windows Control Panel or Mac OS X System Preferences to open the Java Control Panel, then select the Security tab.    Mac OS: You can download Java from Apple Support Downloads (Java 6 and below). Windows and Linux: You can download Java here or you can select the offline (full) installer for your operating system from this download page.
or What are the Linux 64-bit installation instructions for Java?
 If you don't need 64-bit Java, there is no reason to have it installed.
If both 32-bit and 64-bit versions of Java are installed, the Windows Control Panel will display only the 64-bit Java Control Panel.
See 64 bit builds for more information about 64-bit versions of Mozilla applications.
   Note: The Java Embedding Plugin has been bundled with Mac distributions of older Mozilla browsers, including Firefox 3.x and Sea Monkey 2.0.
See Manual Installation and Registration of Java Plugin for Linux at for additional information.