Hi Le...Well to begin with u have to see what things u require for yr application and does that framework can provide all the implementations or not anyways the most succesful nowadays is Struts framework where u can configure ur view and controller of yr application and thru controller u can communicate with ur j2ee stuff and threby making the Model part completely independent from controller or view.if u want more information about struts and its implementations go to apache site Thanks Jayant