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JSCTracker: A Semantic Clone Detection Tool for Java Code by Rochelle Elva and Gary T. Leavens Abstract This paper presents a tool and algorithm for the detection of semantic clones in Java methods. For our purpose, semantic clones are defined as functionally identical code fragments. Thus, our detection process operates on the premise that if two code fragments are semantic clones, then their input-output behavior would be identical. We adopt a wholistic approach to the definition of input-output behavior by including not only the return values of methods; but also their effects as reflected in the pre- and post-states of the heap. We refer to this as a method's IOE (input, output and effects)-behavior. Our tool and algorithm are tested in a small case study using the open source database management software DSpace and the reference management software JabRef. Keywords: semantic clone detection, input-output behavior, effects, IOE behavior, Java language, JSCTracker. 2000 CR Categories: D.2.0 [Software Engineering] General --- languages, tools, JSCTracker.