外观模式-java

package u12;

import java.util.Scanner;

public class Client {

    public static void main(String[] args) {
        MainFrame f = new MainFrame();
        f.fun();
    }
}

package u12;

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

package u12;

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

}

package u12;

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("开机完成！");
    }
}

package u12;

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

}

package u12;

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