Portable method to install Java on Ubuntu cloud images

gistfile1.txt

cloud-init: ##############################################################
#cloud-config
apt_upgrade: true
apt_sources:
 - source: "ppa:sun-java-community-team/sun-java6"


user-script: #############################################################
#!/bin/sh

DISTRIB_CODENAME=`lsb_release -s --codename`
apt-get -y install openjdk-6-jre-headless
mirror=http://us.ec2.archive.ubuntu.com/ubuntu/
printf "%%s\\n%%s\\n" "deb ${mirror} $DISTRIB_CODENAME multiverse" "deb-src ${mirror} $DISTRIB_CODENAME multiverse" | tee /etc/apt/sources.list.d/multiverse.list
apt-get update