说明：  关于本文：本文主要目的在于教学，研究java程序的注册方式，请勿将此教程用于商业目的。 不对的地方请各位多多指教!
( About this article: The this article main goal lies in the teaching, studies the java procedure the registration way, please do not use in this course the business objective. Not the right place asks each to advise! )