類圖

原始碼

MainFrame.java
package com.facade;

public class MainFrame {
    private Memory memory=new Memory();        //關聯關係建立聯絡
    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(
 
"開機正常");
        
    }

}

Memory.java
package com.facade;

public class Memory {
    public void display() {
        System.out.println("1、記憶體正常");
    }

}

Cpu.java
package com.facade;

public class Cpu {
    public void display() {
        System.out.println("2、cpu執行正常");
    }


}

Os.java
package
 
 com.facade;

public class Os {
    public void display() {
        System.out.println("4、作業系統載入正常");
    }


}

HardDisk.java
package com.facade;

public class HardDisk {
    public void display() {
        System.out.println("3、硬碟讀取正常");
    }


}

Client.java
package com.facade;

import java.util.Scanner;

 
public class Client {

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

            MainFrame f = new MainFrame();
            Scanner scan = new Scanner(System.in);
            System.out.println("請輸入ON進行開機：");
            String str = scan.nextLine();
            if (str.equals("ON")) {
                f.fun();
            } else {
                System.out.println("輸入的資訊有誤！！！請重新輸入");
            }
        }
    }

}

測試截圖