Since Java is not installed by default in Ubuntu or any Debian-based systems, users have to download Java binaries from Oaracle website and install the software manually which seems difficult for some users.

In this tutorial we will show you how to install Java 8 under Ubuntu 14.10 and Linux Mint 17.1 or older using a PPA owned by a Dutch team (Duinsoft).

The installation of Java 8 is simple, just open the terminal and issue these commands under 32 or 64 bit systems:

sudo apt-key adv --keyserver keys.gnupg.net --recv-keys 5CB26B26 
echo "deb http://www.duinsoft.nl/pkg debs all" | sudo tee -a /etc/apt/sources.list.d/duinsoft.list 
sudo apt-get update 
sudo apt-get install update-sun-jre

Wait now until Java is fully installed on your system. To check if your installtion is successful, open this link: Java Version

Check also your Firefox add-on section and open the Plugins tab:

Have a nice day :)

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