2011年9月30日
类与接口继承
摘要： An object' class defines how the object is implemented. The class defines the object's internal state and the inplementation of its operations. In constract, an object's type only refers to its interface----the set of requests to which it can respond.It's important to understand the 阅读全文
posted @ 2011-09-30 20:26 御剑逍遥 阅读(168) 评论(0) 推荐(0)