I`m currently using struts framework for my project, however, as you know, struts focuses on the controller and view. As for model, I have to handle on my own. I tried expresso framework, however it is so complicated and lacking documentation(In order to get more support licence fee? Reasonable enough..However I`m just a college student). I`d like to ask about your opinion in adopting frameworks, and if possible, those which can work with struts because I`ve worked with struts for four month and like it;-) By the way, has anyone used Castor JDO implementation?