[تنبيه - عنوان غير مناسب : ]اية المشكلة مش عارف

i want to connect netbeans web application with derpy or mysql .

i use Tomcate so i depend on the web.xml determined on it

<res-ref>,<res-type><res-scope>.

and at the code that manage the connection

public static void getconnection(String url,String password,String driver){

try{

class.forname(driver);

connection = Drivermanager.getconnection(url,password,driver);

}catch(classNotFoundexception e)

{.........}

catch(sqlexception e)

{........}

at debuging no any database operation maked i use derpy driver