Mobile Code Paradigms Before After Paradigm S S S Client-Server A know-how A know-how resource resource B Remote know-how resource A know -he Evaluation B resource B Code on resource know-how resource B Demand A know -how A Mobille Agent know-how resource resource A 2021/2/2 Institute of Computer Software, Nanjing University2021/2/2 Institute of Computer Software, Nanjing University 25