winglessbird的博客

class Duck{ public: FlyBehavior* flyBehavior; QuackBehavior* quackBehavior; void performFly() { flyBehavior->fly(); } void performQuack()　{ quackBehavior->quack(); } }; class Mal

public abstract class MenuComponent{ public void add(MenuComponent menuComponent) { } public void remove(MenuComponent menuComponent) { } public void getComponent getChild(int i) { }