package com.inmind.duotai_test12;
//笔记本类，包含运行功能、关机功能、使用USB设备功能
public class Laplop {
    public void powerOn(){
        System.out.println("笔记本开机");
    }

    public void powerOff(){
        System.out.println("笔记本关机");
    }

    public void useUSB(Usb usbDevice) {
        usbDevice.open();
        //加上类型判断，是鼠标就点，是键盘就敲
        if (usbDevice instanceof Mouse) {
            Mouse mouse = (Mouse) usbDevice;
            mouse.click();
        }
        if (usbDevice instanceof KeyBoard) {
            KeyBoard keyBoard = (KeyBoard)usbDevice;
            keyBoard.knock();
        }

        usbDevice.close();
    }
}