Is it possible to write a jsp file that retrieve emails from mailbox and show them to the client

Question

I m trying to figure out a way to write a jsp file that connect to local dovecot pop3 server , retrieve emails and show them to the client

Im using the following code :

<%@ page import="java.io.*,java.util.*,javax.mail.*"%>
<%@ page import="javax.mail.internet.*,javax.activation.*"%>
<%@ page import="javax.servlet.http.*,javax.servlet.*" %>
<%
        String host = "localhost";
        String username = "lk";
        String password = "****";
        Properties props = new Properties();

        props.setProperty("mail.store.protocol", "pop3");
        props.setProperty("mail.pop3.host", host);
        props.setProperty("mail.pop3.user", username);


        Session mailSession = Session.getDefaultInstance(props);
        Store store = null;

        store = mailSession.getStore(new URLName("pop3://" + host));

        store.connect(username,password);

        //Folder inbox = store.getFolder("inbox");
        //inbox.open(Folder.READ_ONLY);

        //Message[] messages = inbox.getMessages();



%>

<h1>helo</h1>

But i keep getting the error 500 whenever i try to reach the jsp file :

javax.servlet.ServletException: javax.mail.MessagingException: Connect failed;
  nested exception is:
    java.net.SocketException: Permission non accordée (connect failed)
    org.apache.jasper.runtime.PageContextImpl.doHandlePageException(PageContextImpl.java:916)
    org.apache.jasper.runtime.PageContextImpl.handlePageException(PageContextImpl.java:845)
    org.apache.jsp.popa_jsp._jspService(popa_jsp.java:132)
    org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:70)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:439)
    org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:395)
    org.apache.jasper.servlet.JspServlet.service(JspServlet.java:339)
    javax.servlet.http.HttpServlet.service(HttpServlet.java:731)
    org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52)

Note that i m not using an IDE , i have installed apache tomcat on centos 7 , and i have dovecot running pop3 server on port 110 i can reach it through telnet and i m trying to make things work without using IDE ....

your help would be much appreciated