JPDA

Attach debugger to Java process

http://www.ibm.com/developerworks/library/os-eclipse-javadebug/index.html

http://docs.oracle.com/cd/E19146-01/821-0790/abxio/index.html

http://docs.oracle.com/javase/7/docs/technotes/guides/jpda/conninv.html

http://www.fizyka.umk.pl/~jacek/docs/jdk122doc/soljdb.html

java -Xdebug -Xrunjdwp:transport=dt_socket,server=y,suspend=n,address="8000" -jar test.jar

jdb -attach myhost:8000