设计模式-外观模式

[实验任务一]：计算机开启

在计算机主机(Mainframe)中，只需要按下主机的开机按钮(on())，即可调用其他硬件设备和软件的启动方法，如内存(Memory)的自检(check())、CPU的运行(run())、硬盘(HardDisk)的读取(read())、操作系统(OS)的载入(load())，如果某一过程发生错误则计算机启动失败。

Java代码

package t12;

import java.util.Scanner;

public class Client {

    public static void main(String[] args) {
        // TODO 自动生成的方法存根
        while (true) {

            MainFrame f = new MainFrame();
            Scanner scan = new Scanner(System.in);
            System.out.println("请输入ON进行开机：");
            String str = scan.nextLine();
            if (str.equals("ON")) {
                f.fun();
            } else {
                System.out.println("输入的信息有误！！！请重新输入");
            }
        }
    }

}



package t12;

public class Cpu {
    public void display() {
        System.out.println("cpu运行正常");
    }
}


package t12;

public class HardDisk {
    public void display() {
        System.out.println("硬盘读取正常");
    }

}




package t12;

public class MainFrame {
    private Memory memory = new Memory(); // 关联关系建立联系
    private Cpu cpu = new Cpu();
    private HardDisk harddisk = new HardDisk();
    private Os os = new Os();

    public void fun() {
        memory.display();
        cpu.display();
        harddisk.display();
        os.display();
        System.out.println("开机正常");
    }
}



package t12;

public class Memory {
    public void display() {
        System.out.println("内存正常");
    }

}




package t12;

public class Os {
    public void display() {
        System.out.println("操作系统载入正常");
    }
}

c++代码

#include<iostream>
using namespace std;


class Sub_Work1//子工作1
{
public:
    void check()
    {
        cout<<"Memory START OK"<<endl;
    }
};

class Sub_Work2//子工作2
{
public:
    void run()
    {
        cout<<"CPU START OK"<<endl;
    }
};

class Sub_Work3//子工作3
{
public:
    void read()
    {
        cout<<"HardDisk START OK"<<endl;
    }
};

class Sub_Work4//子工作4
{
public:
    void load()
    {
        cout<<"OS START OK"<<endl;
    }
};
class Work
{
private:
    Sub_Work1 w1;
    Sub_Work2 w2;
    Sub_Work3 w3;
    Sub_Work4 w4;
public:
    void Work1()
    {
        w1.check();
        w2.run();
        w3.read();
        w4.load();
    }
};


main()
{
    string o;
    cout<<"输入ON开机"<<endl;
    cin>>o;
    if(o=="ON"||o=="on")
    {
        Work w;
        w.Work1();
    }
    else cout<<"ERROR!"<<endl;
}

设计模式-外观模式

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