public RedheadDuck()
{
FlyBehavior = new FlyWithWings();
QuackBehavior = new DuckQuack();
}
public MallardDuck() {
_quackBehavior = new Quack();
_flyBehavior = new FlyWithWings();
}
public MallardDuck()
{
flyBehaviour = new FlyWithWings();
quackBehaviour = new QuackDuck();
}
public MallardDuck()
{
QuackBehavior = new Quack();
FlyBehavior = new FlyWithWings();
}
/// <summary>
/// 写一个构造函数，可以保证创建对象时，将实例复制给父类的quackBehavior
/// </summary>
public MallardDuck()
{
quackBehavior = new Quack(); //绿头鸭使用Quack类处理呱呱叫，所以当performQuack()被调用时，叫的职责被委托给Quack对象，而我们得到了真正的呱呱叫。
flyBehavior = new FlyWithWings(); //使用FlyWithWings作为其FlyBehavior类型。
}
public DuckTyp1()
{
flyBehavior = new FlyWithWings();
}
public GreenHeadDuck()
{
flyBehavior = new FlyWithWings();
quackBehavior = new Quack();
}
public Fighter()
{
_fly = new FlyWithWings();
_shoot = new ShootWithGun();
}
public RedheadDuck()
{
flyBehavior = new FlyWithWings();
quackBehavior = new Quack();
}