Open the Firefox browser and hover the mouse on the menu bar. Now, choose Tools and click ADD ONs option. Next, select Plugins and click JAVA (TM) Platform plugin for Windows or Java Applet Plug-in (Mac OS X). Finally, choose Activate or click enable to activate Java option.
In extreme case where you are unable to activate Java, just take help of the professionals. Search for alternative helpline number at Contactforhelp directory. The tech experts will respond your queries within specified time.