Maintenance

The Oracle version of Java will no longer be available through repos and must be manually installed. Here's how I did it.
1) Download the latest JDK from here: http://www.oracle.com/technetwork/java/javase/downloads/
2) Unpack the jdk (right now it unpacks as a directory called jdk1.7.0_02) and unpack it in to the /usr/lib/jvm/ directory.
3) construct a text file called /usr/lib/jvm/.jdk1.7.0_02.jinfo and put this in it:

name=jdk1.7.0_02
alias=jdk1.7.0_02
priority=1051
section=main

hl java /usr/lib/jvm/jdk1.7.0_02/jre/bin/java
hl keytool /usr/lib/jvm/jdk1.7.0_02/jre/bin/keytool
hl pack200 /usr/lib/jvm/jdk1.7.0_02/jre/bin/pack200
hl rmid /usr/lib/jvm/jdk1.7.0_02/jre/bin/rmid
hl rmiregistry /usr/lib/jvm/jdk1.7.0_02/jre/bin/rmiregistry
hl unpack200 /usr/lib/jvm/jdk1.7.0_02/jre/bin/unpack200
hl orbd /usr/lib/jvm/jdk1.7.0_02/jre/bin/orbd
hl servertool /usr/lib/jvm/jdk1.7.0_02/jre/bin/servertool
hl tnameserv /usr/lib/jvm/jdk1.7.0_02/jre/bin/tnameserv
hl jexec /usr/lib/jvm/jdk1.7.0_02/jre/lib/jexec
jre policytool /usr/lib/jvm/jdk1.7.0_02/jre/bin/policytool
jdk appletviewer /usr/lib/jvm/jdk1.7.0_02/bin/appletviewer
jdk apt /usr/lib/jvm/jdk1.7.0_02/bin/apt
jdk extcheck /usr/lib/jvm/jdk1.7.0_02/bin/extcheck
jdk idlj /usr/lib/jvm/jdk1.7.0_02/bin/idlj
jdk jar /usr/lib/jvm/jdk1.7.0_02/bin/jar
jdk jarsigner /usr/lib/jvm/jdk1.7.0_02/bin/jarsigner
jdk javac /usr/lib/jvm/jdk1.7.0_02/bin/javac
jdk javadoc /usr/lib/jvm/jdk1.7.0_02/bin/javadoc
jdk javah /usr/lib/jvm/jdk1.7.0_02/bin/javah
jdk javap /usr/lib/jvm/jdk1.7.0_02/bin/javap
jdk jconsole /usr/lib/jvm/jdk1.7.0_02/bin/jconsole
jdk jdb /usr/lib/jvm/jdk1.7.0_02/bin/jdb
jdk jhat /usr/lib/jvm/jdk1.7.0_02/bin/jhat
jdk jinfo /usr/lib/jvm/jdk1.7.0_02/bin/jinfo
jdk jmap /usr/lib/jvm/jdk1.7.0_02/bin/jmap
jdk jps /usr/lib/jvm/jdk1.7.0_02/bin/jps
jdk jrunscript /usr/lib/jvm/jdk1.7.0_02/bin/jrunscript
jdk jsadebugd /usr/lib/jvm/jdk1.7.0_02/bin/jsadebugd
jdk jstack /usr/lib/jvm/jdk1.7.0_02/bin/jstack
jdk jstat /usr/lib/jvm/jdk1.7.0_02/bin/jstat
jdk jstatd /usr/lib/jvm/jdk1.7.0_02/bin/jstatd
jdk native2ascii /usr/lib/jvm/jdk1.7.0_02/bin/native2ascii
jdk rmic /usr/lib/jvm/jdk1.7.0_02/bin/rmic
jdk schemagen /usr/lib/jvm/jdk1.7.0_02/bin/schemagen
jdk serialver /usr/lib/jvm/jdk1.7.0_02/bin/serialver
jdk wsgen /usr/lib/jvm/jdk1.7.0_02/bin/wsgen
jdk wsimport /usr/lib/jvm/jdk1.7.0_02/bin/wsimport
jdk xjc /usr/lib/jvm/jdk1.7.0_02/bin/xjc
plugin -javaplugin.so /usr/lib/jvm/jdk1.7.0_02/jre/lib/amd64/libjavaplugin_jni.so

4) run "sudo update-alternatives --config java" and choose jdk1.7.0_02
5) check that it's your current java by running "java -version" - you should get something like this back:
java version "1.7.0_02"
Java(TM) SE Runtime Environment (build 1.7.0_02-b13)
Java HotSpot(TM) 64-Bit Server VM (build 22.0-b10, mixed mode)