![](https://lstatic.shangxueba.com/sxbzda/h5/images/m_q_title.png)
[单选题]
publicclassDate{privateintday,month,year;Date(inti,intj,intk){day=i;month=j;yaer=k;}Date(){day=1;month=1;year=1998;}Date(Dated){day=d.day;month=d.month;year=d.year;}publicDatetomorrow(){Dated=newDate(this);d.day++;return
A.静态方法
B.成员变量
C.成员函数
D.消息映射
![](https://lstatic.shangxueba.com/sxbzda/h5/images/tips_org.png)