How to use Java applet in Linux
Hi all, am using Debian linux with Firefox 60.8.0esr (64-bit). I know the whole spiel about Firefox not supporting java applets any longer, but I have some old IoT devices that i need to get configured and they use a java applet for some portions of the configuration. I understand Firefox ESR 52 still supports java applets, and i've downloaded version 52.9.0esr and extracted it to its own location. Now i can start it without interferin with my v60 profile by running it like: "./firefox --no-remote --profile ." I had to go into options and turn off the automatic update because otherwise it updates it to v60. Then I downloaded jre-8u221-linux-x64.tar.gz and extracted that. Now the question is how do i get the plugin installed into the Firefox v52? thanks
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I wasn't able to make Firefox recognize the Java plugin via a symlink in "~/.mozilla/plugins" to the jre-8u221 and the jre-8u191, jre-8u144 works. I don't know why more recent Java plugin versions aren't detected.
In current Firefox releases you need a JNLP (Java Web Start) file to launch a java application.
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Odabrano rješenje
I wasn't able to make Firefox recognize the Java plugin via a symlink in "~/.mozilla/plugins" to the jre-8u221 and the jre-8u191, jre-8u144 works. I don't know why more recent Java plugin versions aren't detected.
In current Firefox releases you need a JNLP (Java Web Start) file to launch a java application.
Thanks! The 221 version worked OK for me for some reason. I put a link to jre1.8.0_221/lib/amd64/libnpjp2.so in ~/.mozilla/plugins and it showed right up in about:plugins Also had to run the jre1.8.0_221/bin/ControlPanel from the command line so I could add a security exception for the site, but after that the applet loaded right up and I was able to complete the device's configuration.
i am trying to load the jre1.8.0_221 plugin to load in my Browser . i created a link to "/usr/local/jre1.8.0_221/lib/amd64/libnpjp2.so" in "~/.mozilla/plugins".
i installed java as system wide with root access , also while configuring the the path environment in "sudo nano /etc/profile" is edited as follows :
JAVA_HOME=/usr/local/jre1.8.0_221 PATH=$PATH:$HOME/bin:$JAVA_HOME/bin export JAVA_HOME export PATH
But the plugin is still not show in about:plugins in the Mozilla Browser and not working in the browser is also checked about:config .
what is the solution to this?
You can't install and use the Java plugin in Firefox versions beyond Firefox 52.
Websites need to use Java Web Start (file extension .jnlp) to launch Java applications in a standalone window in current Firefox releases.
Why-do-Java-Silverlight-Adobe-Acrobat-and-other-plugins-no longer work.
is the JNLP (Java Web Start) file to launch a java application to be found in ubuntu OS or in Firefox. Not sure how to approach this. I have Icedtea-Web running in Ubuntu but still can detect the jnlp file.
Any help will be appreciated.
You should find a JNLP link on the web page just like you previously had a Java applet. A JNLP file is a special XML file send as type "application/x-java-jnlp-file".
This file has all parameters that are needed to start this Java application. See: