Plugin directory of Mozilla Firefox 19.0 on Ubuntu
I've tried to install a Java Plugin on my Firefox using the manual at the Oracle's site. But I've failed to find the firefox plugin directory. There was no plugin dir in ~/.mozilla. I've tried to create it and create the symbolic link (pointing to the plugin file in JRE) in it. Also, I've tried to create the symlink at ~/.mozilla/extensions. But the plugin did not work, firefox couldn't see it.
Can some tell me, where's the firefox's plugin directory? Or at least how can I install the Java plugin for firefox?