Windows 8, Windows 7, Vista, Windows XP, Windows 2000, Macintosh OS X
Firefox - Activate Java plug-in
Firefox implemented a new Click to Play security feature that protects against attacks, targeting plug-ins that are known to be vulnerable. This feature prevents applets from automatically loading and allows users to control what content they want to run or avoid.
If you try to run a Java applet using a Java plug-in version that is identified as vulnerable, Firefox will prevent the applet from automatically loading and alert you that the plug-in is vulnerable.
If an update is available, Firefox will provide the option to
update or activate the plug-in. We recommend checking for updates before activating the plug-in.
Additionally, Firefox provides an option to block or automatically activate the plug-in on a per-site basis.