How to update Java plugin after upgrading Mozilla Firefox to version 46 in Ubuntu 14.04 ?

I have upgraded my Firefox and after running Firefox I have found a notice that Java plugin has to be upgraded too.

So there are steps to do it.

1. Install the latest (at the moment) version of Java 8

sudo apt-get install oracle-java8-installer

2. Update alternatives
sudo update-alternatives --config mozilla-javaplugin.so