源地址：http://www.krizna.com/ubuntu/install-eclipse-in-ubuntu-12-04/
Eclipse installation in ubuntu 12.04 is very simple . you can install eclipse using “software center” but you may not get the latest version, better download the latest version and install manually . Here we can see how to install eclipse in ubuntu manually .
Installing eclipse in ubuntu 12.04
Step 1 » Before installing eclipse you need to install java , you can either install JRE or JDK .krizna@leela:~$ sudo apt-get install openjdk-7-jre
[or]
If you are going to use eclipse for java development, then you can install JDKkrizna@leela:~$ sudo apt-get install openjdk-7-jdk
Step 2 » Download the latest eclipse package from herehttp://www.eclipse.org/downloads/?osType=linux
Step 3 » move the package to the /opt directorykrizna@leela:~$ sudo mv eclipse-SDK-4.2.2-linux-gtk.tar.gz /opt/
Step 4 » Unzip the package by typing the below commandkrizna@leela:~$ cd /optkrizna@leela /opt:~$ sudo tar -xvf eclipse-SDK-4.2.2-linux-gtk.tar.gz
Step 5 » Create a new desktop file eclipse.desktop in /usr/share/applications/ and add the below lines .
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[Desktop Entry]
Name=Eclipse
Type=Application
Exec=/opt/eclipse/eclipse
Terminal=false
Icon=/opt/eclipse/icon.xpm
Comment=Integrated Development Environment
NoDisplay=false
Categories=Development;IDE
Name[en]=eclipse.desktop
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Step 6 » Now goto /usr/share/applications and find eclipse.desktop file for launching eclipse , you can drag this file to the launcher.
good luck