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What do I need to run Java web applications on firefox with my 64bits fedora 17? I can't pass this test but I have installed the x64 rpm from there. What is missing?

Additional note: I tried to follow these instructions (linking the libnpjp2.so) but then the JRE test crashed firefox.

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up vote 3 down vote accepted

Thanks to this page, I got the solution.

Using the JRE x64 rpm mentioned in the question, without icedtea plugin, all you need to do is linking the JRE library to firefox this way :

ln -s /usr/java/jre1.7.0_05/lib/amd64/libnpjp2.so ~/.mozilla/plugins/

In fact I just copied it the first time this is why it crashed. After that you can verify the plugin is installed in firefox by typing in the url :


And Java(TM) Plug-in 1.x will show up, no need to restart firefox.

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Try to use icedtea plugin.
You installed java on your system, but you probably don't have the needed plugin in firefox.
In arch that plugin is icedtea, and as i can see, it also is in fedora: http://fedoraproject.org/wiki/Features/IcedTea

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Just installed Icedtea and I get an error with the app I tried (gaikai). It says I am running an unsupported version and I need the official one, maybe there is another way ? – B2F Jul 24 '12 at 16:55
Got it working now, I am adding the answer – B2F Jul 24 '12 at 17:04

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