duck游戏

//鸭子抽象类
public abstract class duck1 {

	public duck1() {
	}

	FlyBehaviro myFlyBehavior;

	QuackBehavior myQuackBehavior;

	public void fly() {

		myFlyBehavior.fly();

	}

	public void quack() {

		myQuackBehavior.QuackBehavior();

	}

	public abstract void display();

}


//定义飞行接口
interface FlyBehaviro {

	public void fly();

}

//定义叫声接口
interface QuackBehavior {

	public void QuackBehavior();

}

//飞行类
class flyNoWay implements FlyBehaviro {
	@Override
	public void fly() {
		System.out.println(" i can not fly");
	}
}

class canfly implements FlyBehaviro {
	@Override
	public void fly() {
		System.out.println("i can fly");
	}
}

//叫声类
class waquack implements QuackBehavior {
	@Override
	public void QuackBehavior() {
		System.out.println("wawa");
	}
}

class noquack implements QuackBehavior {
	@Override
	public void QuackBehavior() {
		System.out.println("......");
	}
}

class guquack implements QuackBehavior {
	@Override
	public void QuackBehavior() {
		System.out.println("guagua");
	}
}

//绿鸭
class greenduck extends duck1 {
	public greenduck() {
		myFlyBehavior = new canfly();
		myQuackBehavior = new guquack();
	}

	@Override
	public void display() {
		System.out.println("i am greenduck");
	}

}

//塑料鸭子
class plasticduck extends duck1 {
	public plasticduck() {
		myFlyBehavior = new flyNoWay();
		myQuackBehavior = new noquack();
	}

	@Override
	public void display() {
		System.out.println("no color duck");
	}

}

这里定义一个鸭子类

public class duck {
	public static void main(String[] args) {
//		绿鸭
		duck1 mall = new greenduck();
		mall.display();
		mall.fly();
		mall.quack();
		
//		塑料鸭子
		duck1 pla = new plasticduck();
		pla.display();
		pla.fly();
		pla.quack();	
	}
}

运行结果：

i
am greenduck
i can fly
guagua
no color duck
i can not fly
…