https://www.java.com/en/download/help/enable_browser_ubuntu.xml
Mozilla Firefox
- Become the root user by running the
sucommand and then enter the super-user password. Type:sudo -s - Create a directory called plugins if you do not have it. Type:
mkdir -p /usr/lib/firefox-addons/plugins - Go to Mozilla plugins directory before you make the symbolic link. Type:
cd /usr/lib/firefox-addons/plugins - Create a symbolic link. Type:
ln -s /usr/local/java/jre1.7.0/lib/amd64/libnpjp2.so - Restart your browser and test Java