11.12

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。

1.类图

 

 

 

2.

public class Car implements Vehicle{

    @Override

    public void drive() {

        System.out.println("小轿车行驶在");

    }

}

 

 

public class CementRoad extends Road{

 

    public CementRoad(Vehicle vehicle) {

        super(vehicle);

    }

 

    @Override

    public void driveOnRoad() {

        super.vehicle.drive();

        System.out.println("水泥路");

    }

}

 

 

public class Client {

    public static void main(String[] args) {

        Road road = new AsphaltRoad(new Car());

        road.driveOnRoad();

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

        Road road1 = new CementRoad(new Bus());

        road1.driveOnRoad();

    }

}

 

 

public abstract class Road {

    protected Vehicle vehicle;

    public Road(Vehicle vehicle){

        this.vehicle = vehicle;

    }

    public abstract void driveOnRoad();

}

 

 

public interface Vehicle {

    public void drive();

}

 

 

public class AsphaltRoad extends Road{

    public AsphaltRoad(Vehicle vehicle) {

        super(vehicle);

    }

 

    @Override

    public void driveOnRoad() {

        super.vehicle.drive();

        System.out.println("沥青路");

    }

}

 

 

public class Bus implements Vehicle{

 

    @Override

    public void drive() {

        System.out.println("公交车行驶在");

    }

}