关键词: 面向对象软件, 复杂性度量, 复杂性分解

Abstract: This paper analyzes several measure methods of object-oriented software complexity that have already existed，and points out their deficiencies of reflecting class complexity，and then proposes a new measure method of class complexity under the direction of software complexity decomposition.This method decomposes class complexity into three subsections—class member complexity，class member relation complexity and encapsulation complexity.Measure method for each subsection is proposed res-pectively，and then obtains the whole complexity.Here，class complexity is reflected by Sum of Implemented Method Complexity（SIMC） and Sum of Class Interface Complexity（SCIC）；class member relation complexity is expressed by analysis of fake bipartite graph which is proposed in the paper；encapsulation complexity is expressed by visible rate of the member.At last，the rationality and feasibility of this method are validated from the application.

Key words: object-oriented software, complexity measurement, complexity decomposition