Install OpenJDK 8 Ubuntu 14.04 Trusty
How to Install OpenJDK 8 on Ubuntu 14.04 Trusty LTS GNU/Linux – Step by step Tutorial.
And the Ubuntu Trusty OpenJDK 8 Installation is a Free and Open Source Implementation of the Java Platform Standard Edition.
Moreover, Oracle Java JDK/JRE Installation is based on the OpenJDK source code. In Addition, it contains Closed-Source Components.

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1. Accessing Shell
First, Open a Shell Terminal emulator window
Ctrl+Alt+t on desktop
(Press “Enter” to Execute Commands)
Contents