Using java.lang.instrument API

[Alec Lee]

I am able to attach my code into a target running jvm using the java.lang.instrument API with the agentmain() method. What next should I do if I want to get hold of a reference to all the available non-system (java.*) Objects? Can I just do a search of all the threads available and follows the reference recursively starting from the thread objects?

[Alec Lee]

It seems to me that it would be better for me to instrument the classes by Javassist and modify their constructors so that whenever a new instance of the target class is created it will add a reference of itself to a global static data structure. (rather than having me to searching thru all the object reference recursively)

Would there be any tutorial available on using Javassist to modify the constructor of a class?