策略模式的java样例实现（以鸭子为例）

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最近学习了策略模式，看到了一篇非常好的博客，学习了一下并写了一个简单的代码。

博客地址：http://www.cnblogs.com/justinw/archive/2007/02/06/641414.html

代码如下：

Fly接口：

package com.strategy;public interface FlyBehavior {public void fly();}

package com.strategy;public class FlywithWings implements FlyBehavior{public void fly(){System.out.println("fly with wings.");}}

package com.strategy;public class FlynoWay implements FlyBehavior {public  void fly(){System.out.println("fly no way.");}}

鸭子类：

package com.strategy;public class Duck {FlyBehavior fb;public void setFlayperform(FlyBehavior fb){this.fb = fb;}public void display(){System.out.println("Duck");}public void Flyperform(){fb.fly();}}

package com.strategy;public class LarryDuck extends Duck{    public LarryDuck(){    this.setFlayperform(new FlywithWings());    }public void display(){System.out.println("larry duck");}}

package com.strategy;public class PageDuck extends Duck{public PageDuck() {this.setFlayperform(new FlynoWay());;}public void display(){System.out.println("larry duck");}}

测试：

package com.strategy;public class Main {public static void main(String[] args){Duck larryduck = new LarryDuck();larryduck.Flyperform();Duck pageduck = new PageDuck();pageduck.Flyperform();}}

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