研究 Java平台的核心——虚拟机 .为了使 Java在不同的平台上顺利运行 ,研究 Java虚拟机 (Java virtualmachine,简称 JVM)的组成及运行机制 ,为编程实现 JVM或向各种平台移植 JVM提供参考 .通过对 Kaffe(一种Java虚拟机的实现 )桌面版本的源代码进行分析 ,得出虚拟机运行的整个流程 ,并对流程中的关键部分进行深入研究 ,同时结合 Sun的《Java虚拟机规范》,总结出实现 JVM的一些关键步骤 ,并提出改进 JVM运行效率的建议-Java core research platform- Java virtual machine in order to make a smooth run on different platforms, research Java Virtual Machine (Java virtualmachine, referred JVM) the composition and operation mechanism for programming JVM or to provide a variety of porting JVM Reference by conduct of Kaffe (one kind of Java Virtual Machine implementations) desktop version of the source code analysis, the whole process of virtual machines running, and in-depth study of a key part of the process, combined with Sun' s " Java Virtual Machine norms " , summed up some of the key steps to achieve the JVM, and make recommendations to improve the operating efficiency of the JVM