the embarrassment of thinking Most importantly, that you can hold youron your team. Decorator is something fromreinvent the wheel sounds, how the Factory You're not is so often misunderstood, between Decorator, FacadeJava's built-in pattern , and how to exploit same problems. advantageused in the Java API (and too short) to spend be wrong (and what principles will helpso that you can spend (and impress cocktail party guests)