Comments recovery approach for Java decompiler

Abstract

Java bytecode contains many data that relative to represent the program's behavior. It consists of many crucial to information such as offsets and sets of instruction. Those information are used to driven a program. All-important materials in those document can be used to organize in the reverse engineering process. It changes all sets of bytecode instruction to earlier source code. Although many sets of byte code instructions can be restored in source code, but its comments cannot be recovered. Because Java bytecode is not contains its comments. Supposing those comments are collected and provided in the proper format. It is a possibility for recovering original source code. This paper purposes the methodology for transforming Java bytecode and its comments from the AOCF to the original source code. The result represents all line of comments can be recovered by an extension. And the correctness of recovery is 90.9 % for control-flow test cases.