Along with Java Runtime Environment, Java console extension will be installed in Firefox browser with install of Java and for each Java update new java console will be added, this way multiple Java console extensions will be installed for Firefox and these extensions are useless for end users .

If you recently installed Java 7 in your Computer, you’ll notice disabled Java console 7 under Extensions in Add-ons Manager.

Java Console 7 is disabled

Do we need Java Console extension in Firefox?

Java Console provides the information about Java version, user home directory, and any error message that occurs while running an applet of application. You’re not going to use/need this, so better to remove Java Console extension from Firefox browser (this will not affect the way  Java apps work in your browser), here is how.

Removing Java Console extension

1. Close Firefox browser.

2. Open C”\Program Files\Firefox\Extensions”  folder and delete “{CAFEEFAC-0016-0000-0018-ABCDEFFEDCBA}” subfolder.

removing Java Console

3. Now open Firefox and look for ” Java Console” under Extensions in Add-ons manager, it won’t be there since it was already removed.