【正文】
o handle. Thus, the object can return to the theme of all, can be the object of a frameup to achieve. 6 。 The answer is simple date to reuse. While puter generated from the beginning, we have reusable code, but objectoriented technology allows reuse is not only the code, there are many other things. By objectoriented technology, we can reuse requirements, analysis, design, test plans, user interface and architecture, and so on. Objectoriented analysis is built on objects and their properties, a category of its members, and some of these basic overall concept of the foundation. Encyclopedia Britannica: In human awareness and understanding of the real world in the course of three tectonic widespread use of the law: 1. Distinguish between objects and their properties. For example, the distinction between a tree and the tree the size or location of space. 2. Distinguish between the object and its ponents. For example, the distinction between a tree and tree branches. 3. A different kind of object and distinguish. For example, all the trees and all types of stone formation and type of distinction. OOA is built on more than three on the basis of mon law. OOA model that describes a specific domain of the target, as well as a variety of structural relations and munications relations. OOA model has two purposes. First of all, every software have been established in specific real world, OOA model is used to formalize the realworld view. It established a variety of targets, namely that the major software systems as well as the organizational structure of the real world imposed on the software system of rules and con