Static analysis of Java bytecode

Understanding control flows in a computer program is essential for many software engineering tasks such as testing, debugging, reverse engineering, and maintenance. In this paper, we present a control flow analysis technique to analyze the control flow in Java bytecode. To perform the analysis, we construct a control flow graph (CFG) for Java bytecode not only at the intraprocedural level but also at the interprocedural level. We also discuss some applications of a CFG in a maintenance environment for Java bytecode.