JPDA(Java Platform Debugger Architecture)

http://www.blogjava.net/fjin/archive/2009/09/10/294443.html

http://withacker.blog.51cto.com/3568061/1355103

http://lovestblog.cn/blog/2015/09/14/javaagent/

http://www.bianceng.cn/Programming/Java/201012/22129.htm

http://blog.csdn.net/yczz/article/details/5354737