This week's book giveaway is in the OO, Patterns, UML and Refactoring forum. We're giving away four copies of Refactoring for Software Design Smells: Managing Technical Debt and have Girish Suryanarayana, Ganesh Samarthyam & Tushar Sharma on-line! See this thread for details.
That code you have in your NYStyleCheesePizza class needs to be inside a method (or a constructor). The only things which can be outside methods (or constructors) are declarations, so the compiler is trying to interpret that code as declarations. And it fails (naturally, because they aren't declarations) and so it gives you error messages.