This is one of those “dead easy so why so hard” issues.
I use Fedora on my home desktop.
Here’s how to enable the java plugin under Fedora using icedtea (openjdk).sudo yum install icedtea-web
sudo mkdir -p /usr/lib64/firefox/plugins
sudo ln -s /usr/lib64/IcedTeaPlugin.so /usr/lib64/firefox/plugins/libjavaplugin.so
Now restart and go here to test the java plugin now works.
Ref.
http://blog.yo61.com/enable-chrome-java-plugin-on-fedora-18-with-icedtea