Updating java applet
On Mac OS X 10.7.3 (Lion) and above, Java 7 is available here or from this download page. (If you are looking for Java 6, see the Java 6 FAQ page).You can also download an offline installer using the "JRE" download link on Oracle's Java SE Downloads. Even if you have a 64-bit operating system, you need the 32-bit (x86) Java download for 32-bit browsers.On Windows, make sure you select the 32-bit JRE since Firefox and Sea Monkey official releases are 32-bit (e.g., select "Windows x86 Offline" for the offline installer linked from Oracle's Java SE Downloads page).See below for more information on installing or updating Java on Windows.Information on security and stability issues affecting Java is available at Oracle's Critical Patch Updates and Security Alerts page.Java is a programming language originally developed by Sun Microsystems (now Oracle). If you don't need 64-bit Java, there is no reason to have it installed.
Applies to Windows or Mac OS X 10.7.3 and above Starting in Java 7, the Java Control Panel includes the Security option, "Enable Java content in the browser", which is selected by default.
On 64-bit Windows, you can have both 32-bit Java (needed for 32-bit browsers like Firefox and Sea Monkey) and 64-bit Java (needed for 64-bit browsers, such as 64-bit Internet Explorer). Note: Starting with Java 8 Update 20, the Update tab in the Java Control Panel enables users to automatically update 64-bit JREs (in addition to 32-bit versions) that are installed on their system.
The Update tab is not available in earlier 64-bit versions of Java.
   For Linux installation instructions, see How do I download and install 32-bit Java for Linux Platforms?
or What are the Linux 64-bit installation instructions for Java?