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 ...

For example, the Java byte code language is fundamentally a stack-based language, and mounting a stack-based language onto a register-based core is quite a challenge. Nor is Java technology ideal for ...

Stack op erations are an example of tasks that dedicated Javaxc processors do very well, but where RISC processors are inefficient. Also, translating Java byte codes into native machine language of a ...

For example, as a post-compilation step you could massage the .class data to make the byte code either harder to read when decompiled or harder to decompile into valid Java code (or both).

Java byte code is not optimised for a particular processor but in the phone world everything is ARM-based. It's a bit inconvenient on the compile side but you can still use Java,” said Ken ...