ObjectOriented Program Method Level Clone Detection Based on Similarity Measurement

FONT face; Verdana; YU Dong-qi; WU Yi-jian; PENG Xin; ZHAO Wen-yun; FONT

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ObjectOriented Program Method Level Clone Detection Based on Similarity Measurement

更新时间：2025-07-16

- ObjectOriented Program Method Level Clone Detection Based on Similarity Measurement
- Acta Electronica Sinica Vol. 38, Issue 2A, Pages: 174-181(2010)
- 作者机构：
  
  1. 1.上海市智能信息处理重点实验室,上海,200433
  2. 复旦大学计算机科学技术学院,上海,200433
- 作者简介：
- 基金信息：
- DOI：
  CLC： TP311.5
- Published：2010
- 稿件说明：
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FONT face, Verdana, YU Dong-qi, et al. ObjectOriented Program Method Level Clone Detection Based on Similarity Measurement[J]. Acta Electronica Sinica, 2010, 38(2A): 174-181.
DOI：

FONT face, Verdana, YU Dong-qi, et al. ObjectOriented Program Method Level Clone Detection Based on Similarity Measurement[J]. Acta Electronica Sinica, 2010, 38(2A): 174-181. DOI：

摘要

<FONT face=Verdana>代码克隆侦测对于代码重构以及可复用资产抽取都有着重要的作用.现有的克隆侦测方法及工具以相似代码片段为单位，给进一步的克隆分析以及代码重构带来困难.针对这一问题，本文提出了一种基于相似性度量的面向对象程序方法级克隆侦测方法，即以方法为单位进行克隆代码侦测.该方法综合利用代码中的注释、签名以及语法相似性来度量方法代码之间的克隆程度.在此基础上合并子类中的相似方法并提取到父类中，从而实现进一步的代码重构.本文通过对JDK包中代码的实验分析验证了本文所提出方法的有效性.初步的实验结果表明，本文方法能够准确、有效地辅助开发者实现方法级的克隆代码侦测.

Abstract

<FONT face=Verdana>Code clone detection is important for refactoring and extraction of reusable assets.The present code clone detection method is on the basis of detection of similar code segments

which brings difficulty for further clone analysis and refactoring.Aiming at this problem

this paper offers a method level clone detection method for object-oriented program based on similarity measurement

which detects method level cloned code.Our method utilizes comments of the code

method signature and syntactic similarity to measure the degree of the clone.Based on the method mentioned above

further refactoring can be realized by combining similar methods of subclasses into one method and pulling it up into superclass.Our method’s effectiveness has been verified by analyzing the result of the experiment on the code of JDK.The initial experiment result shows that our method canhelp developer detect method level code clone both accurately and effectively.

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