33rd Degree 2014 - Busy Java Developer's Guide to JVM Bytecode - Ted Neward

Java bytecode is the code set used by the Java runtime (the JVM) that is JIT-compiled into native code at runtime. Find out how to read (and write) JVM bytecode directly, so as to better understand how the runtime works, and be able to disassemble key libraries that you depend on. We?ll even take a look at the new bytecode instructions being debated for introduction in Java 7, and how they might behave and operate. We'll also tackle examining tools and libraries that can be used to manipulate Java bytecode directly, such as Javassist, ASM and BCEL, and why and when you might do this.