Context context = new InitialContext();
     String user = (String) context.lookup("cell/persistent/ADBindUser");
     String password = (String) context.lookup("cell/persistent/ADBindPwd");

     Map<String, String> map = new HashMap<String, String>();
     map.put(Constants.MAPPING_ALIAS, "WPSBIND");

CallbackHandler callbackHandler =new WSMappingCallbackHandler(map, null);

     LoginContext loginContext =
         new LoginContext("DefaultPrincipalMapping", callbackHandler);
     try{
         loginContext.login();
     }catch(LoginException le) {

     }