Sync

Yea, I meant the instances. Also when using enums in a switch, you don't have to reference the enum, you can just use the instance name. Obviously.. It's generally recommended to follow the conventions, didn't you know?

I've just skimmed the top and already spotted 2 mistakes. You should make sure everything in a tutorial is perfect, so as to not teach others bad habits. Enum types should be named in full caps. I know that was just a demonstration but yea people might copy you. You should also mention that string switch support was added in Java7, so if they use that their program won't be useable by anyone using prior versions.

You guys are really bad with your dates.