public RedHeadDuck()
{
quackBehavior = new Quack();
flyBehavior = new FlyWithWings();
}
public MallardDuck() {
_quackBehavior = new Quack();
_flyBehavior = new FlyWithWings();
}
public MallardDuck()
{
_quackBehavior = new Quack();
_flyBehavior = new FlyWithWings();
}
public ModelDuck()
{
_flyBehavior = new FlyNoWay();
_quackBehavior = new Quack();
}
public MallardDuck()
{
FlyBehaviour = new FlyWithWings();
QuackBehaviour = new Quack();
}
/// <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 ModelDuck()
{
FlyBehavior = new FlyNoWay();
QuackBehavior = new Quack();
}
public ModeDuck()
{
flyBehavior = new FlyNoWay();
quackBehavior = new Quack();
}
public GreenHeadDuck()
{
flyBehavior = new FlyWithWings();
quackBehavior = new Quack();
}
public MallardDuck()
{
quackBehavior = new Quack();
flyBehavior = new Fly();
}
public override void AssignQuackBehavior()
{
quackBehavior = new Quack();
}
public RedheadDuck()
{
flyBehavior = new FlyWithWings();
quackBehavior = new Quack();
}
