You’ve written applications for the JVM, using various frameworks and maybe even various languages. You understand how to rig up the CLASSPATH, get .class files to load, compile source, and set up an IDE. But you’ve always wanted a better understanding of the plumbing underneath. How does JVM bytecode work? How does the JVM itself work? This presentation walks you through JVM and JVM bytecode basics, with lots of examples of how to bend the JVM to your whims.