4

I am using ubuntu 14.10 and i installed jdk8 via apt-get install openjdk-8-jdk:i386. Using update-alternatives, I have made java 8 as the default one.

Now, when i checked java on firefox using this link, it showed java plugin is not working on browser.

To fix this, I tried to copy libnpjp2.so from /usr/lib/jvm/java-8-openjdk-i386/lib/i386 to ~/.mozilla/plugins folder.

But i can see, the plugin so file is missing inside the jvm libs folder

How can i make java plugin work in firefox with openjdk-8?

|improve this question
  • Is there some reason you are using 32 bit java (on a supposedly 64 bit machine)? – Wolfer Sep 30 '15 at 13:53
  • 1
    Cisco's webex works only on 32 bit firefox which needs 32 bit java – Madhavan Sep 30 '15 at 14:35
  • The what. Java is a language designed to be independent from the running machine's architecture by using a VM. That's why any machine (or smartphone) can run a jar file if they have a java VM installed. So the 32 bits are only relevant to the host OS. I'd recommend using a java VM that actually runs on your machine before trying to combine it with Firefox. – Wolfer Sep 30 '15 at 14:53
  • 1
    @Wolfer, you're right. In theory. I have no idea why, but audio doesn't work with Webex on 32 bit systems. – r1pp3rj4ck Oct 27 '15 at 8:43
8

You need to install the icedtea-plugin:i386, it will create 

/usr/lib/jvm/java-8-openjdk-i386/lib/i386/IcedTeaPlugin.so

which you can symlink to 

~/.mozilla/plugins/libnpjp2.so
|improve this answer
  • 2
    $ sudo apt-get install icedtea-plugin – Yu Jiaao Jun 14 '16 at 4:40
  • @YuJiaao I think it's sudo apt-get install icedtea-plugin:i386 on 64 bit systems. – r1pp3rj4ck Aug 29 '16 at 12:11
  • 1
    I had to add ln -s /usr/lib/jvm/java-8-openjdk-i386/jre/lib/i386/IcedTeaPlugin.so libnpjp2.so – petersv Jan 4 '17 at 14:06
  • There is no need to link with libnpjp2.so, I ran ln -s /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/amd64/IcedTeaPlugin.so . and activated IcedTea plugin by visiting java.com/en/download/installed8.jsp – Niloct Jan 10 '17 at 16:00
  • if you install java manually, you also need to make sure that the javaws binary points to the correct jdk version. in my case, i had an alternative configured that needed proper linking. – thrau Aug 9 '17 at 11:16

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.