This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
For a program this tiny, it obviously doesn't really matter. But you don't want to get into the habit of making everything a static method. As you write more code, you should use statics less and less.