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From: JLP <JLP@jlp.com>
Newsgroups: comp.lang.java.programmer
Subject: Re: Java Profiler
Date: Sat, 28 Dec 2013 15:10:23 +0100
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I am not sure it is what you want,
look at ( tools that inject byte code at runtime):
ASM => http://asm.ow2.org/
BCEL => http://commons.apache.org/proper/commons-bcel/

Or with a higher level :
AspectJ => http://eclipse.org/aspectj/
Byteman => http://www.jboss.org/byteman

+ standard JSE API in package java.lang.management.