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Using java.lang.instrument API

 
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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
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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?
 
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