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。
类图
代码
Vehicle.java package qiaojie; public interface Vehicle { public void run(); } Road.java package qiaojie; public abstract class Road { protected Vehicle vehicle; public void setVehicle(Vehicle ve) { this.vehicle=ve; } public abstract void drive(); } Shuini.java package qiaojie; public class Shuini extends Road{ public void drive() { vehicle.run(); System.out.println("行驶在水泥路"); } } Liqing.java package qiaojie; public class Liqing extends Road{ public void drive() { vehicle.run(); System.out.println("行驶在沥青路"); } } Bus.java package qiaojie; public class Bus implements Vehicle{ @Override public void run() { System.out.print("Bus"); } } Car.java package qiaojie; public class Car implements Vehicle{ @Override public void run() { System.out.print("Car"); } } Main.java package qiaojie; import java.util.Scanner; public class Main { public static void main(String[] args) { Vehicle vehicle = 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) { vehicle=(Vehicle)new Car(); road=(Road)new Shuini(); }else if(i==2) { vehicle=(Vehicle)new Car(); road=(Road)new Liqing(); }else if(i==3){ vehicle=(Vehicle)new Bus(); road=(Road)new Shuini(); }else if(i==4) { vehicle=(Vehicle)new Bus(); road=(Road)new Liqing(); }else { System.out.println("输入无效!"); } road.setVehicle(vehicle); road.drive(); } }
#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<<"行驶在水泥路";_instance->bedrive();} }; class liqing :public road { liqing(){} virtual~liqing(){} void drive(){cout<<"行驶在沥青路";_instance->bedrive();} }; int main() { road *ro=new shuini; transport *tr=new bus; ro->settransport(tr); ro->drive(); delete ro; delete tr; system("pause"); return 0; }
原文地址:http://www.cnblogs.com/manmmm/p/16810628.html
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