The Java console enables Web browsers, such as Mozilla Firefox, to display applets created under the Java technology. Java allows Firefox to successfully launch animations and 3-D effects that the end user can interact with. Ensuring Firefox possesses the latest Java version generally helps maximize a program's compatibility rate.
Launch "Mozilla Firefox." Click the "Tools" option found in the menu bar, and select "Add-ons."
Click the "Plugins" tab located on the left navigation pane.
Note the Java entry displayed among other installed plug-ins, which lists the version number as part of its name.
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