5.4 Summary of the Performance of Translated Java Code 5.2 the Inevitable Factors 5.2.1 Memory Allocation and Lack of Stack Locality 5.1 the Evitable Factors 5 Bridging the Performance Gap 4.2 Application Programs

Java is seen as an important applications-programming language of the future. However the performance of Java programs on the Java Virtual Machine (JVM) leaves much to be desired. In this report, I describe the implementation and performance of a Java-to-C++ translator for stand-alone Java application programs. My experiments show that it is possible to get between one to two orders of magnitude improvement in performance by translating Java sources to native machine code using C++ as an intermediate language. In some cases, it is also possible to achieve performance (via this translation) that is comparable to that of C++ code developed from scratch and carefully optimized by hand. I also comment on those features of Java that preclude certain kinds of performance optimizations that are possible in a language like C++.