如何通过领域模型发现类-基于面向对象的软件分析与设计一般性步骤

如何通过领域模型发现类 猜数游戏 输入一个数，如果猜中了显示“你猜中了啊”然后程序结束，如果猜的不对，系统则告诉你的数是太大还是太小，然后要求你重新输入新的数，直到猜中为止。 * But before we dive into Model Driven Development, let’s digress a little and start by discussing the very notion of model and modeling. While the term modeling has only gained acceptance in mainstream software development recently, the idea itself is neither new nor unique to software. Modeling is a tradition approach used in engineering. And is as old as engineering itself. As long as there has been something to build, engineers have been building models of them. It is a typical approach used in engineering endeavors to reduce the risk associated with the effort.