What is java processor support in practice?

Question

Java

This shows the processor parameters, in particular java support:

What does this mean from a practical point of view? How exactly can you speed up the launch of java applications and is it possible at all?

Answer 1

Wikipedia.

A Java processor is the implementation of the Java Virtual Machine (JVM) in hardware. In other words the bytecodes that make up the instruction set of the abstract machine become the instruction set of a concrete machine.

ARM926EJ-S is an ARM processor able to run Java bytecode, this technology being named Jazelle.

Drawing conclusions: I don’t know about the startup speed (here, in my lamer’s opinion, most of the time is spent loading the program into memory), but the execution speed, in theory, should be higher.
UPD:
And there is even an article about Jazelle in Russian .

Answer 2

This is how the ARM926EJ-S processor supports Jazelle DBX technology.
What it is, I have already written briefly here .
In modern reality, this is an absolutely useless feature, since JIT compilation negates all the advantages of hardware bytecode interpretation and, in addition, Jazelle DBX imposes additional restrictions on the JVM implementation (fixed register mapping, stack growing in the opposite direction, etc.) . So in practice, it's better to forget about Jazelle DBX and use JVM without such support, but with JIT compilation.