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；

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");
    }
}