Install Oracle JDK on Ununtu

install-oracle-java

# Installing Oracle (Sun) JDK on Ubuntu

# Before you install it, remove OpenJDK, if you have it installed:
sudo apt-get purge openjdk*

# To install Java 8/7/6, do this:

# Add the PPA:
sudo apt-get install software-properties-common
sudo add-apt-repository ppa:webupd8team/java

# Update the repo index:
sudo apt-get update

# Install Java 8:
sudo apt-get install oracle-java8-installer

# Or, install Java 7:
# sudo apt-get install oracle-java7-installer
# Or, install Java 6:
# sudo apt-get install oracle-java6-installer