（结构性模式四）外观模式

package com.eyugame.modle;
/**
 * 外观模式
 * @author JYC506
 *
 */
public class Computer {
	private Cpu cpu;
	private Disk disk;
	public Computer() {
		super();
		this.cpu = new Cpu();
		this.disk = new Disk();
	}

	public void start() {
		System.out.println("computer start");
		this.cpu.start();
		this.disk.start();
	}

	public void shudown() {
		this.disk.shudown();
		this.cpu.shudown();
		System.out.println("computer shutdown");
	}

	public static void main(String[] args) {
		Computer computer=new Computer();
		computer.start();
		computer.shudown();
	}
}

class Cpu {
	public void start() {
		System.out.println("cup start");
	}

	public void shudown() {
		System.out.println("cup shutdown");
	}
}

class Disk {
	public void start() {
		System.out.println("disk start");
	}

	public void shudown() {
		System.out.println("disk shutdown");
	}
}