GNU/Linux Installing Oracle JDK 7 Guide
Hi! This Article Presents a List of Links to Guides on Installing the Oracle-Sun Official Java SE JDK 7 on Main GNU/Linux Distributions.
And the Oracle Java JDK 7 for Linux includes Tools useful for developing and testing Programs written in the Java programming language and running on the Java platform.
Finally, on the post bottom you find links to Quick-Start with Java Development with the Best Java IDEs: Eclipse, NetBeans, and IntelliJ IDEA.

GNU/Linux Oracle Java Development Kit 7 Installation Guide
How to Install Eclipse Java IDE:
Eclipse Ubuntu Installation Guide.
How to Install the Latest Netbeans IDE:
NetBeans Ubuntu Installation Guide.
How to Install IntelliJ IDEA Java IDE: IntelliJ IDEA Ubuntu Installation Guide.