11.25实验 23：策略模式

[实验任务一]：旅行方式的选择

旅游的出行方式有乘坐飞机旅行、乘火车旅行和自行车游，不同的旅游方式有不同的实现过程，客户可以根据自己的需要选择一种合适的旅行方式。

实验要求：

1. 画出对应的类图；

 

 

2. 提交源代码；

package strategy;

 

public class Person {

    private TourStrategy ts;

 

    public void setTs(TourStrategy ts) {

        this.ts = ts;

    }

 

    public void travel(){

        ts.travel();

    }

}

package strategy;

public interface TourStrategy {

    public void travel();

}

package strategy;

 

public class AirStrategy implements TourStrategy{

    @Override

    public void travel() {

        System.out.println("乘坐飞机旅游");

    }

}

package strategy;

 

public class TrainStrategy implements TourStrategy{

    @Override

    public void travel() {

        System.out.println("乘坐火车旅游");

    }

}

package strategy;

 

public class BikeStrategy implements TourStrategy{

    @Override

    public void travel() {

        System.out.println("骑自行车旅游");

    }

}

package strategy;

 

public class Client {

    public static void main(String[] args) {

        Person p = new Person();

        TourStrategy air = new AirStrategy();

        p.setTs(air);

        p.travel();

        System.out.println("-------------------------");

        TourStrategy train = new TrainStrategy();

        p.setTs(train);

        p.travel();

        System.out.println("-------------------------");

        TourStrategy bike = new BikeStrategy();

        p.setTs(bike);

        p.travel();

    }

}

 

3. 注意编程规范。