Java复习 9.1问题？？？

来源：互联网发布：福州淘宝模特编辑：程序博客网时间：2024/06/06 16:19

public class LampTest {public LampTest(){System.out.println("构造Lamp...");}public void ligth(){System.out.println("发光...");}public static void main(String[] args) {/*System.out.println("创建白炽灯...");IncandecentLamp iLamp=new IncandecentLamp();System.out.println("创建荧光灯...");LuorescentLamp ll=new LuorescentLamp();System.out.println("创建节能灯...");EnergySavingLamp el=new EnergySavingLamp();*/}}class Filament{public Filament(){System.out.println("开始构造灯丝..");}}class EnergySavingLamp extends LuorescentLamp{public EnergySavingLamp(){System.out.println("开始创建节能灯...");}}class IncandecentLamp extends LampTest{private Filament filament=new Filament();public IncandecentLamp(){System.out.println("开始创建白炽灯...");}public Filament getFilament() {return filament;}public void setFilament(Filament filament) {this.filament = filament;}}class LuorescentLamp extends LampTest{public LuorescentLamp(){System.out.println("开始创建荧光灯...");}private static Filament filament=new Filament();public static Filament getFilament() {return filament;}public static void setFilament(Filament filament) {LuorescentLamp.filament = filament;}}

输出为：

开始构造灯丝..

不是什么都没有吗？为什么还有输出？？？？？？？？？