Monday, May 2, 2011

Running Java from Firefox using the add-on

I wanted to run a Java applet from Firefox. I was using Firefox on Ubuntu. I am using Open JDK 6. You need libnpjp2.so browser plug-in for that. However, Open JDK does not have this plug-in. So, had to install Sun Java plug-in:

sudo apt-get install sun-java6-plugin

Then you need to go to the firefox plug-in directory and make a hard link to the libnpjp2.so library. (You need to close firefox before making the hard link)

cd /usr/lib/firefox/plugins
ln -s /usr/lib/jvm/java-6-sun-1.6.0.22/jre/lib/i386/libnpjp2.so .

You will see the plug-in listed in Tools > Add-ons > Plugins tab. You can enable or disable any time. (QuickJava Firefox extension provide a nice little tool to enable/disable on the fly.)

Hope that helps.

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