putingyu wrote:
> 
> hi :
>   I want add  user on application because I don't like use telnet. but error. why?
> 
> package james;
> 
> /**
>  * Title:
>  * Description:
>  * Copyright:    Copyright (c) 2001
>  * Company:
>  * @author
>  * @version 1.0
>  */
> import org.apache.avalon.*;
> import org.apache.avalon.blocks.*;
> import org.apache.james.*;
> import org.apache.james.transport.*;
> import org.apache.james.userrepository.*;
> import java.net.*;
> import java.io.*;
> import java.util.*;
> 
> public class addUser {
> private String   username,password,restr;
> private UsersRepository users;
> private org.apache.james.James  mailServer;
> 
>   public addUser() {
> username="pty";
> password="pty";
>   }
> public String Add() {
> mailServer=new org.apache.james.James();

That's why. Its meant to be run as a server application over avalon.

> if(mailServer.addUser(username,password)){
> return restr="OK!";
> }
> else{
> return restr="ERROR!";
> }
> 
> }
> 
>  public static void  main(String [] args) {
>     addUser adduser=new addUser();
>     System.out.println(adduser.Add());
>  }
> }
> 
> error:
> java.lang.NullPointerException
> 
>  at org.apache.james.James.addUser(James.java:464)
> 
>  at james.addUser.Add(addUser.java:44)
> 
>  at james.addUser.main(addUser.java:55)
> 
> Exception in thread "main"

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