Install Oracle Java8 in Ubuntu via ppa

Install JDK8

ppa:webupd8team supports Ubuntu 15.04, 14.10, 14.04 and 12.04 as well as Linux Mint 17.1, 17 and 13. Add the PPA and install Oracle Java 8 (the package provides both JDK8 and JRE8) using the following commands:

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

Once installed, running below command to check version:

java -version

Configure Java Environment Variables

Set java environment variables automatically by installing this package:

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

If you’ve already installed oracle-java6-set-default or oracle-java7-set-default, they will be automatically removed when installing oracle-java8-set-default (and the environment variables will be set for Oracle Java 8 instead).

Reference:

http://www.webupd8.org/2012/09/install-oracle-java-8-in-ubuntu-via-ppa.html