AOP based Refactoring of Java Legacy System

Maintenance and refactoring of legacy System is difficult due to lack of necessary documents and source codes. It is a great deal to generate valuable information through refactoring. Our Objective is to develop a class diagram and sequence diagram from the binary byte code of a java legacy system and then to obtain coding from the developed diagrams. To trace the system behaviors, the pattern of Aspectj concept namely weaving is applied to resolve the binary byte codes during runtime of the system. Index Terms—refactoring, binary byte code, class diagram, sequence diagram, Aspect