None of the posts I found on this worked quite right, so I’m writing up what I did here for future reference.
sudo apt-get update
sudo apt-cache search java6
When I did this, the results I got included:
If I’m interpreting it right, that means the Sun JDK is not available for installation via apt-get, at least the way I have it configured. But people said that the OpenJDK works fine too. So I decided to install it. It seems that specifying “default-jdk” just installs “openjdk-6-jdk” anyway:
sudo apt-get install default-jdk
When this completed, /usr/bin/java was set up for me. But I did have to add a JAVA_HOME environment variable to my .bashrc file:
After that, I was set to go.