public String actionSubmit() {
	if (userId != null && password != null) {
	    UserVO userVO = getUserService().getUserById(userId);
	    System.out.println("UserVO===============>" + userVO);

	    if (userVO != null) {
		if (userId != null) {
		    if (userId.compareTo(userVO.getId()) != 0) {
			logWarningMessage("Invalid User Name.");
			return null;
		    }
		}
		if (password != null) {
		    if (password.compareToIgnoreCase(userVO.getPassword()) != 0) {
			logWarningMessage("Invalid Password.");
			return null;
		    }
		}
	    } else {
		logWarningMessage("Invalid UserName/Password.");
		return null;
	    }
	}

	if (userId == null) {
	    logWarningMessage("Invalid User Name.");
	    return null;

	}
	if (password == null) {
	    logWarningMessage("Invalid Password.");
	    return null;

	}

	return NavigationConstants.welcomeScreen;
    }