27 lines
723 B
Java
27 lines
723 B
Java
package com.inmind.duotai_test12;
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//笔记本类，包含运行功能、关机功能、使用USB设备功能
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public class Laplop {
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public void powerOn(){
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System.out.println("笔记本开机");
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}
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public void powerOff(){
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System.out.println("笔记本关机");
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}
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public void useUSB(Usb usbDevice) {
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usbDevice.open();
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//加上类型判断，是鼠标就点，是键盘就敲
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if (usbDevice instanceof Mouse) {
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Mouse mouse = (Mouse) usbDevice;
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mouse.click();
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}
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if (usbDevice instanceof KeyBoard) {
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KeyBoard keyBoard = (KeyBoard)usbDevice;
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keyBoard.knock();
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}
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usbDevice.close();
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}
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}
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