Be sure not to do this with your main firefox application. That way it never gets updated accidentally. Java, JSP and JDBC programming guides for complete.
#Install java plugin firefox ubuntu install
One of my colleagues created a script to remove the old firefox, and untar it on every run. I instruct you to install Firefox on Linux Server (Ubuntu Server.
#Install java plugin firefox ubuntu 64 Bit
copy this to the mozilla/firefox plugin folders (I couldn't figure out which one to copy it too, so I just copied it to anything firefox/plugins or mozilla/plugins) Edit1: After 3 years of asking this question, Java plugin still works fine in Palemoon v28.9.2-1 64 bit on Ubuntu 20.04 LTS. I tried to install the Sun J2SDK 1.5.0 update 2 using the method above, however it still didnt install the plugin.Now your openJDK installation will contain a IcedTeaPlugin.so file in the jre/lib folder.Install the icedtea-plugin and the icedtea-plugin.Type: mkdir -p /usr/lib/firefox-addons/plugins Go to Mozilla plugins directory before you make the symbolic link. sudo dpkg -add-architecture i386 sudo apt update sudo apt install libc6:i386 sudo apt-get install lib32stdc++6 sudo apt install libgtk-3-0 sudo apt-get install ia32-libs. Type: sudo -s Create a directory called plugins if you do not have it. Become the root user by running the su command and then enter the super-user password.
![install java plugin firefox ubuntu install java plugin firefox ubuntu](https://www.pontikis.net/wp-content/uploads/2017/01/firefox-pref-general.png)
Download a tar of Firefox, version 51 (newer version don't support the plugin) Restart your browser and test Java Mozilla Firefox.After a long trial-and-error approach, I got IcedTea working consistently in an older version of firefox like this: I need in-browser Java for legacy work-related websites, and the oracle java plugin does not cut it.
![install java plugin firefox ubuntu install java plugin firefox ubuntu](https://i.stack.imgur.com/LD9ui.png)
I figured someone else might be in the same situation. This is an old thread, but I stumbled upon it while googling a solution to my problem today.