Java LDAP Authentification - problem!!!

Question

I found application in .NET (C#), and it's work perfectly! (http://www.codeproject.com/KB/system/arbauthentication.aspx)
I want do this logic in my java web application. All users in our domain in first leg must be log-in in web application!
And it - authetification must be over Active Directory (AD). Help me please.
            Hashtable authEnv = new Hashtable();
            String userName = "";
            String passWord = "";
            InputStreamReader converter = new InputStreamReader(System.in);
            BufferedReader in = new BufferedReader(converter);
            System.out.println("Input your username:");
            userName = in.readLine();
            System.out.println("Input your password:");
            passWord = in.readLine();           
            base = userName + "@" + "xxxyyyzzz.com";
            String ldapURL = "ldap://192.168.0.99:389/";
            authEnv.put(Context.INITIAL_CONTEXT_FACTORY, "com.sun.jndi.ldap.LdapCtxFactory");
            authEnv.put(Context.PROVIDER_URL, ldapURL);
            authEnv.put(Context.SECURITY_AUTHENTICATION, "simple");
            authEnv.put(Context.SECURITY_PRINCIPAL, base);
            authEnv.put(Context.SECURITY_CREDENTIALS, passWord);
            try {
                DirContext authContext = new InitialDirContext(authEnv);
                System.out.println("Authentication Success!");               
            catch (AuthenticationException authEx)
                System.out.println("Authentication failed!");
            catch (NamingException namEx) {
                System.out.println("Something went wrong!");
                namEx.printStackTrace();
            }This code is not working when truely input username & password. Exception!
javax.naming.AuthenticationException:
[LDAP: error code 49 - 80090308: LdapErr: DSID-0C090334, comment: AcceptSecurityContext error, data 525, vece]
And when input truely username, but password is a blank (password="") it's work...     
Authentication Success!
may be this is anonymous authentification.

Answer 1

If you would have searched through the forum you would have discovered that the Active Directory error code 525 means username not found.
And you may also have discovered that a null password implies an anonymous logon.
Either the user has mistyped their username, or you have made an incorrect assumption when constructing the userPrincipalName and appending the upn suffix "xxxyyyzzz.com".