ubuntu natty(11.04)에서 apt-get으로 sun JDK 설치

vi /etc/apt/source.list

# deb http://archive.canonical.com/ubuntu natty partner

# deb-src http://archive.canonical.com/ubuntu natty partner

주석처리를 빼주고, 

sudo apt-get update

sudo apt-get install sun-java6-jdk sun-java6-jre sun-java6-source

sudo update-java-alternatives -s java-6-sun