11.12每日总结

实验9：桥接模式

本次实验属于模仿型实验，通过本次实验学生将掌握以下内容：

1、理解桥接模式的动机，掌握该模式的结构；

2、能够利用桥接模式解决实际问题。

 

[实验任务一]：两个维度的桥接模式

用桥接模式实现在路上开车这个问题，其中，车可以是car或bus，路可以是水泥路或沥青路。

实验要求：

1.画出对应的类图；

2.提交源代码；

3.注意编程规范。

 

 

 

package test9;

 

public class Bus implements Transport{

    @Override

    public void run() {

        System.out.print("Bus");

    }

}

 

 

package test9;

 

public class Car implements Transport{

    @Override

    public void run() {

        System.out.print("Car");

    }

}

 

package test9;

 

public class LIqing extends Road{

    public void drive() {

        transport.run();

        System.out.println("行驶在沥青路");

    }

}

 

package test9;

import java.util.Scanner;

public class Main {

    public static void main(String[] args) {

        Transport transport = null;

        Road road = null;

        System.out.println("请选择：1、Car/水泥路  2、Car/沥青路  3、Bus/水泥路  4、Bus/沥青路");

        Scanner input=new Scanner(System.in);

        int i=input.nextInt();

        if(i==1) {

            transport=(Transport)new Car();

            road=(Road)new Shuini();

        }else if(i==2) {

            transport=(Transport)new Car();

            road=(Road)new LIqing();

        }else if(i==3){

            transport=(Transport)new Bus();

            road=(Road)new Shuini();

        }else if(i==4) {

            transport=(Transport)new Bus();

            road=(Road)new LIqing();

        }else {

            System.out.println("输入无效！");

        }

        road.setTransport(transport);

        road.drive();

    }

}

 

package test9;

 

public abstract class Road {

    protected Transport transport;

    public void setTransport(Transport tr) {

        this.transport=tr;

    }

    public abstract void drive();

}

 

 

 

package test9;

 

public class Shuini extends Road{

    public void drive() {

        transport.run();

        System.out.println("行驶在水泥路");

    }

}

 

#include<iostream>

using namespace std;

class transport

{

public :

    transport(){}

    virtual ~transport(){}

    virtual void bedrive()=0;

};

 

class bus :public transport

{

public:

    bus(){}

    virtual~bus(){}

    void bedrive(){cout<<"bus"<<endl;}

};

 

class car :public transport

{

public:

    car(){}

    virtual~car(){}

    void bedrive(){cout<<"car"<<endl;}

};

 

 

 

 

class road

{

public:

    road():_instance(NULL){}

    virtual~road(){}

    void settransport(transport *instance)

    {

        _instance=instance;

    }

    virtual void drive()=0;

protected:

        transport *_instance;

 

};

 

class shuini :public road

{

 

public:

    shuini(){}

    virtual~shuini(){}

    void drive(){cout<<"在水泥路上行驶的";_instance->bedrive();}

};

 

class liqing :public road

{

public:

    liqing(){}

    virtual~liqing(){}

    void drive(){cout<<"在沥青路上行驶的";_instance->bedrive();}

};

 

int main()

{

    road *ro=new liqing;

    transport *tr=new bus;

 

    ro->settransport(tr);

    ro->drive();

    delete ro;

    delete tr;

 

    ro=new shuini;

    tr=new car;

     ro->settransport(tr);

    ro->drive();

    delete ro;

    delete tr;

 

    system("pause");

    return 0;

}