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Bytecode Engineering
Member rating: No Rating | Words: | Submitted: Sat Mar 10 2007
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Bytecode engineering with BCEL The Apache Byte Code Engineering Library (BCEL) lets you dig into the bytecode of Java classes. You can use it to transform existing class representations or construct new ones, and because BCEL works at the level of individual JVM instructions, it gives you the utmost power over your code. That power comes with a cost in complexity, though. In this article, Java consultant Dennis Sosnoski gives you the BCEL basics and guides you through an example BCEL application so you can decide for yourself if the power justifies the complexity. In the last three articles of this series, I've shown you how to use the Javassist framework for classworking. This time I'm going to cover a very different approach to bytecode manipulation, using the Apache Byte Code Engineering Library (BCEL). BCEL operates at the level of actual JVM instructions, unlike the source code interface supported by Javassist. The...
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