Direct execution of Java byte code is possible thanks to a Java extension to the ARM processor core by ARM Ltd., Cambridge, England. Known as Jazelle, the new Java acceleration feature initially ...

Another option that Nutter talked about to emit byte codes was use of ASM to manipulate Java bytecode. Nutter also talked about BiteScript [“a (J)Ruby DSL for emitting JVM bytecode”] and Mirah.

A developer claims that Java 7's new bytecode verifier slows performance and increases coding effort, potentially affecting the entire Java ecosystem.

Not anymore. Last year, [Michael] wrote Java Grinder, a Java byte-code compiler that compiles classes into assembly language instead of being part of a JVM.

This project is built around Java Grinder a Java byte code compiler that will compile classes, factories, and all the horrible Java design.design.pattern.pattern.patterns () into assembly language.