How to throw error from EJB

Hi, there

I have some problem about throw an error ......

index.jsp

//.....

int rowCount=adminLogin.loginResult(userName,password);

//....

AdminLogin.java

import java.rmi.RemoteException;

import javax.ejb.Remote;

@Remote

publicinterface AdminLogin{

publicint loginResult(String userName,String password)throws RemoteException;

}

if any error occured how can i throw an error to show on index.jsp?

Thank for advance

[888 byte] By [BomberMana] at [2007-11-27 7:52:58]