/etc/sources.list を開いて編集
deb http://ftp.jp.debian.org/debian/ etch main deb-src http://ftp.jp.debian.org/debian/ etch main deb http://ftp.jp.debian.org/debian/ etch non-free deb-src http://ftp.jp.debian.org/debian/ etch non-free deb http://security.debian.org/ etch/updates main contrib deb-src http://security.debian.org/ etch/updates main contrib
aptitude install sun-java5-jdk sun-java5-plugin sun-java5-source sun-java5-doc sun-java5-fonts
