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http://askubuntu.com/questions/26632/how-to-install-eclipse

Eclipse Kepler 4.3.2 SR2 is the most recent release from the Eclipse top-level project. It contains what you need to build applications based on Eclipse technology, including integrated development environments IDE, and rich client applications using the Eclipse Rich Client Platform RCP. The Eclipse Kepler provides superior Java editing with Java Development Tools, Plug-in Development Environment, Git Team provider, and much more.

Step 1: Install Java (JRE/JDK)

- First install Java 7 and above if not installed

$ sudo apt-get install openjdk-7-jre

or

$ sudo apt-get install openjdk-7-jdk

Step 2: Download Eclipse Kepler IDE

- Next button below to download the latest Eclipse IDE (32bit or 64bit) package. There are different packages depending on what package you want.