Extreme Programming (XP) may be considered a "lightweight methodology", but most books that discuss XP are surprisingly dense, overwhelming Java developers with philosophy and theory and offering very little in the way of actual "here's how you do it" examples. O'Reilly's Java Extreme Programming Cookbook assumes the developer already believes in XP, wants just enough theory for the examples to make sense, and is ready to get down to practice. The book succinctly documents the most important features of popular open source tools for XP in Java-including Ant, Junit, HttpUnit, Cactus, JMeter, Tomcat, Xdoclet-and then digs right in, providing over 100 recipes for implementing the tools in real-world environments. Each recipe offers code solutions that developers can insert directly into applications, with explanations of how and why the code works, so they can learn to adapt the techniques to similar situations.