UnMarshalled Exception

Question

Hi I'm getting the following error when running my Server App:
RemoteException occurred in server thread; nested exception is:
        java.rmi.UnmarshalException: error unmarshalling arguments; nested exception is:
        java.lang.ClassNotFoundException: DAO.dataAccessObjectthe DAO class dataAccessObject is the following code: -
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import java.sql.*;
import com.sun.rowset.CachedRowSetImpl;
import java.rmi.*;
public interface dataAccessObject extends Remote{
    public String generateConnectionString() throws RemoteException,customErrorPropogation ;
    public String getUserPassword(String username) throws RemoteException,customErrorPropogation  ;
    public void ExecuteDML(String username, String sql) throws RemoteException  ;
    public CachedRowSetImpl executeQuery(String username, String sql) throws RemoteException  ;
    public String executeSingleValueString(String username, String sql) throws RemoteException  ;
    public int executeSingleValueNumber(String username, String sql) throws RemoteException ;
    public Date executeSingleValueDate(String username, String sql) throws RemoteException  ;
}The Server code is: -
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package remoteservice;
import java.rmi.registry.LocateRegistry.*;
import java.rmi.registry.*;
import java.rmi.*;
import java.rmi.server.UnicastRemoteObject;
import DAO.*;
* @author Administrator
public class DataAccessLayer {
  public static void main(String[] args) {
        Registry registry;
        try
            registry =  LocateRegistry.getRegistry();
        DataAccessObjectImpl dao = new DataAccessObjectImpl();
        dataAccessObject stub = (dataAccessObject) UnicastRemoteObject.exportObject(dao,8100);
        registry.bind("DAO", stub);
        System.out.println("Done");
        catch (Exception e)
             System.out.println("error: "+e.getMessage());
}If the dataAccessObjectImpl class would be of use please let me know and i will provide it although it takes up more room then this post can handle (with the other classes)
Thanks In Advance

Answer 1

I just stumbled upon the solution.
By changing my server code registry code to read
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package remoteservice;
import java.rmi.registry.LocateRegistry.*;
import java.rmi.registry.*;
import java.rmi.*;
import java.rmi.server.UnicastRemoteObject;
import DAO.*;
* @author Administrator
public class DataAccessLayer {
  public static void main(String[] args) {
        Registry registry;
        try
            LocateRegistry.createRegistry(8100);
            registry =  LocateRegistry.getRegistry(8100);
        DataAccessObjectImpl dao = new DataAccessObjectImpl();
        dataAccessObject stub = (dataAccessObject) UnicastRemoteObject.exportObject(dao,8100);
        registry.bind("DAO", stub);
        System.out.println("Done");
        catch (Exception e)
             System.out.println("error: "+e.getClass());
}Edited by: InnerDemonJ on Mar 30, 2009 3:00 PM