Install Oracle Java on Ubuntu

If you do not want to use the OpenJDK java software on your Ubuntu system, you can install Oracle Java, also known as Sun Java using the following commands in a terminal window:

$ sudo add-apt-repository ppa:webupd8team/java <enter>
$ sudo apt-get update <enter>
$ sudo apt-get install oracle-java7-installer <enter>

After the installation is complete, you can verify that the Java plugin has been installed by starting your Firefox web browser and typing about:plugins in the URL box.