Install Sun Java on Debian

http://www.debianadmin.com/howto-install-java6-on-debian-etch.html
 
$ sudo vi /etc/apt/sources.list
add "deb http://ftp.debian.org/debian unstable non-free" 

$  sudo apt-get update

$  sudo apt-get install sun-java6-jdk

$  sudo vi /etc/apt/sources.list
$ sudo update-java-alternatives -s java-6-sun
$ sudo vi /etc/apt/sources.list
remove "deb http://ftp.debian.org/debian unstable non-free"