Installation of Oracle Java 8 (JDK8 and JRE8) in Ubuntu / Linux Mint

Applies to:
Ubuntu 14.04 LTS, 13.10, 12.10, 12.04 LTS and 10.04 and LinuxMint systems using PPA File. To Install Java 8 in CentOS, Redhat and Fedora read This Article.

Step 1: Install Java 8 (JDK 8)

Add the webupd8team java PPA repository in our system and install Oracle java8 using following set of commands.

$ sudo add-apt-repository ppa:webupd8team/java
$ sudo apt-get update
$ sudo apt-get install oracle-java8-installer

Step 2: Verify JAVA Version

After successfully installing oracle java using above step verify installed version using following command.

$ java -version

java version "1.8.0_05"
Java(TM) SE Runtime Environment (build 1.8.0_05-b13)
Java HotSpot(TM) Client VM (build 25.5-b02, mixed mode)
Step 3: Setup JAVA Environment

Webupd8team is providing a package to set environment variables, Install this package using following command.

$ sudo apt-get install oracle-java8-set-default

References:
https://launchpad.net/~webupd8team/+archive/java