Select “Plugins” and find Java (and/or Java Applet), click the Disable button; Another option is to disable Java everywhere in Mac OS, rather than just in a specific web browser. How to Disable Java ...

Disable Java now! Java is a cross-platform language that's been mightily abused by hackers. With new security bugs being discovered week after week, many experts advise everyone to simply disable ...

In the Java Control Panel, under About, click the About button. The About Java dialog shows you the version number; if you’ve patched Java in the past few months, it’s likely Version 7 Update ...

In Firefox, select “Tools” from the main menu, then “Add-ons,” then click the “Disable” button next to any Java plug-ins.; In Safari, click “Safari” in the main menu bar, then ...

Mozilla Firefox. For Firefox, you need the Add-ons manager for this purpose. From the Firefox button on top of the browser window, navigate to Add-ons, and then to the Plugins tab. Disable all the ...

Having (sincerely) said you should read Oremus's story, I'm now going to quote the immediate news-you-can-use part of it, where he explains how to disable Java for the main browers.

Disable Java now! Java is a cross-platform language that's been mightily abused by hackers. ... On the Plugins tab, click the Disable button next to "Java(TM) Platform." ...