This week's book giveaway is in the OCPJP forum. We're giving away four copies of OCA/OCP Java SE 7 Programmer I & II Study Guide and have Kathy Sierra & Bert Bates on-line! See this thread for details.
No its not like that.
I know only how to query the class using a reflection API to get the information about the class but i don't know how to change the behavior of an object at run time using reflection API.
Thats why i asked this question.