Extracting library-based Java applications

The potential of application extraction techniques to reduce the size of library-based Java applications by constructing an application extractor, Jax, is discussed. Extraction techniques incorporated in Jax include the removal of unreachable methods and redundant methods, and compaction of the class hierarchy. Extraction techniques are effective for applications that rely on class libraries because they are effective at removing unused library functions. During the reduction of application size, performance optimizations are also performed that include call devirtualization, the inlining of method calls and intramethod bytecode optimizations.