Chapter1 ........\Behavior ........\........\FlyBehavior.java ........\........\FlyNoWay.java ........\........\FlyWithWings.java ........\........\MuteQuack.java ........\........\Quack.java ........\........\QuackBehavior.java ........\........\Squeak.java ........\Duck.java ........\MallardDuck.java ........\TestDuck.java