Rupinder Kaur, Harpreet Kaur, Prabhjot Kaur


The area of clone detection has considerably evolved over the last decade, leading to approaches with better results. Since code clones are believed to reduce the maintainability of software, several code clone detection techniques and tools have been proposed. Token-by token matching technique is more expensive than line-by-line matching in terms of computing complexity since a single line is usually composed of several tokens. In this paper token based tools have been evaluated that is, CCfinder and PMD copy/paste detector on the basis of three types of metrics that is, clone set metrics , file metrics , line metrics to investigate the code clones in  source files. The results of the analysis processes show that each tool has its own strengths and weaknesses and no single tool is able to identify all clones within the code.


Plagiarism, CCFinder , PMD copy/paste detector, clone metrics.


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