Upgrade Java for the CLI on Mac OS X

I was screwing around for too long with various installers on my Mac, trying to get the latest available Java runtime working from my terminal.

Finally, some kind soul on StackExchange I think mentioned that if you want to get Java on the command line working, you have to install the JDK package, even if all you need is a JRE. Thanks, Obama!

Anyway, after installing the package from Oracle, now all is well.