Firefox 52 not supported to java plugin

From Firefox Version 52, (the standard version), the support to java plugin has ended, except for Adobe Flash.

 

Workaround (until 2018):
Install the 32bits of Firefox Version 52 ESR (Extended Support Release)
Download:
https://www.mozilla.org/en-US/firefox/organizations/all/

How to configure java plugin for Google Chrome using jdk installed at ubuntu

Requirements:

Oracle JDK installed;
Google Chrome installed;
Ubuntu;

Main steps:

Go to the chrome plugin directory: /usr/lib/mozilla/plugins

sudo ln -sf your_java_home/jre/lib/i386/libnpjp2.so libnpjp2.so

Open the Chrome browser at type chrome://plugins/

chrome_plugin