Install JDK 7 onto Ubuntu 11.10

Download the latest Oracle JDK 7 from here.

sudo mkdir -p /usr/lib/jvm/
cd /usr/lib/jvm/
tar xvfz /media/host/jdk-7u2-linux-x64.tar.gz
ln -s jdk1.7.0_02 jdk

sudo apt-get install python-software-properties
sudo apt-add-repository ppa:nilarimogard/webupd8
sudo apt-get update
sudo apt-get install update-java
sudo update-java

and select /usr/lib/jvm/jdk