Installing Oracle java on Ubuntu 14.04

Steps to install Oracle java on Ubuntu 14.04

sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update

#install java 8

sudo apt-get install oracle-java8-installer

#show installed version of java 

update-alternatives --config java 

nano /etc/environment

JAVA_HOME="YOUR_PATH"

source /etc/environment

echo $JAVA_HOME  

change default version of java in your system

update-alternatives --config java 

or by the next bash script 

#/usr/bin/sh
sudo apt-get install python-software-properties
sudo add-apt-repository ppa:webupd8team/java
sudo apt-get update

#install java 8

sudo apt-get install oracle-java8-installer


#show installed version of java

echo 'JAVA_HOME="/usr/lib/jvm/java-8-oracle"' >> /etc/environment

source /etc/environment

echo $JAVA_HOME
echo "!!!ALL DONE!!!"