《Understanding the Java ClassLoader》.pdf

Understanding the Java ClassLoader Presented by developerWorks, your source for great tutorials /developerWorks Table of Contents If youre viewing this document online, you can click any of the topics below to link directly to that section. 1. Tutorial tips 2 2. Introduction 3 3. The ClassLoader structure 5 4. The CompilingClassLoader 8 5. ClassLoader changes in Java 2 10 6. The source code 12 7. Wrapup 17 Understanding the Java ClassLoader Page 1 Presented by developerWorks, your source for great tutorials /developerWorks Section 1. Tutorial tips Should I take this tutorial? The Java ClassLoader is a crucial, but often overlooked, component of the Java run-time system. It is the class responsible for finding and loading class files at run time. Creating your own ClassLoader lets you customize the JVM in useful and interesting ways, allowing you to completely redefine how class files are brought into the system. This tutorial provides an overview of the Java ClassLoader and takes you through the construction of an example ClassLoader that automatically compiles your code before loading it. Youll learn exactly what a ClassLoader does and what you need to do to create your own. A basic understanding of Java programming, including the ability to create, compile, and execute simple command-line Java programs, as well as an understanding of the class file paradigm is sufficient background to take this tutorial. Upon completion of this tutorial, you will know how to: * E