Eccolo:

<%@ page language="java" import="java.sql.*" %>
<jsp:useBean id ="logBean" scope ="session" class ="Login"/>
<jsp:setProperty name = "logBean" property="*"/>
<HTML>
<HEAD>
</HEAD>
<BODY>
Ciao
<jsp:getProperty name ="logBean" property = "matricola"/>
</BODY>
</HTML>

Grazie mille