ubuntu install eclipse (from:http://askubuntu.com/questions/26632/how-to-install-eclipse)

I use ubuntu 12.10 and I downloaded eclipse-java-juno-SR1-linux-gtk.tar.gz.

1, tar 'eclipse-java-juno-SR1-linux-gtk.tar.gz' to /opt.

sudo tar zxvf  eclipse-java-juno-SR1-linux-gtk.tar.gz -C /opt

2 Create a desktop file and install it:

1. gedit eclipse.desktop
   

   and copy the following to the eclipse.desktop file.

   [Desktop Entry]
   Name=Eclipse 
   Type=Application
   Exec=eclipse
   Terminal=false
   Icon=eclipse
   Comment=Integrated Development Environment
   NoDisplay=false
   Categories=Development;IDE;
   Name[en]=Eclipse
   

   then execute the following command to automatically install it in the unity:

   desktop-file-install eclipse.desktop
   

3,

1. Create a symlink in /usr/local/bin using

   cd /usr/local/bin
   ln -s /opt/eclipse/eclipse
   

2. For eclipse icon to be displayed in dash, eclipse icon can be added as

   cp /opt/eclipse/icon.xpm /usr/share/pixmaps/eclipse.xpm
   

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