Package bflows does not exist on NetBeans

Hi guys i'm making a web application with the jsp using netbenas, then my problem is the following: i have created some packages and i want to import them into my jsp page(SignUp.jsp) for i when i do i have this error.how do I fix this error?

ERROR:

SignUp.jsp

<%@ page contentType="text/html" %>
<%@ page session="false" %>
<%@ page buffer="30kb" %>
<%@ page errorPage="/ErrorPage.jsp" %>

<jsp:useBean id="UserManagement" scope="page" class="bflows.UserManagement" />
<jsp:setProperty name="UserManagement" property="*" />

Web application hierarchy