How to Find Out What Version of Java


Many websites and online tools require Java applets, which allow users to interact with them. This is especially true for many online games, chat rooms and online calculator tools. If you don't have Java installed on your computer, your browser may not be able to interpret these applets, which will cause you to not be able to completely view a website or tool in its entirety. You not only want to have Java installed, you want to have the latest version. There are a few ways to verify what version of Java you have on your computer--online, in your Control Panel or in your web browser.


  • Go to the Java website (see Resources).

  • Select "Downloads" from the top navigation menu. You will be redirected to the Downloads page, but before download options will become available the site will detect whether or not you have Java installed on your computer and what version.

  • Look under the heading "Verified Java Version." If you have Java on your system, your verified Java version will be listed (e.g., "You have the recommended Java installed (Version 6 Update 20)"). In this example, "Version 6" with update "20" would be the version of Java installed on the computer.

On Your Computer

In Your Browser

  • Open your web browser.

  • Select the "Tools" menu.

  • Select "Manage Add-ons" (IE) or "Add-ons" (Firefox).

  • In Internet Explorer, select the "Toolbars & Extensions" button and find Java in the window. The version will be listed under Version (e.g., "Java(tm) Plug-In 2 SSV Helper / Version").

    In Firefox, select the "Plugins" tab. Java and its version will be listed (e.g., "Java(TM) Platform SE 6 U20").

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