Installing the Java Plugin for Firefox on CentOS

The OpenJDK bundled with CentOS is missing a java plugin for Firefox. A simple method of getting Java to run inside the webbrowser and to run java applications is to install icedtea-web

Open a terminal and type the below command

yum install icedtea-web

Then restart your browser
Click Tools- >Add-ons
The Add-ons Manager tab will open.
In the Add-ons Manager tab, select Plugins
Click icedtea-web plugin to select it and click on the Enable button

The java verification applet (http://www.javatester.org/version.html) works fine.