Posted by Xerxes Rånby on Apr 23, 2013; 10:46am
URL: https://forum.jogamp.org/Firefox-OS-and-JogAmp-support-tp4025425p4029008.html

I ran some checks using the Firefox OS simulator.
https://addons.mozilla.org/en-US/firefox/addon/firefox-os-simulator/

When you reach a page using java applets, you only gets promted "a plugin is required to view this content" but there is no options to install any plugin.

It looks like Firefox OS have indeed killed the option to install plugins by disabling the whole plugin framework.