Listing 1

String userName = request.getParameter ("user");
String password = request.getParameter("password");
JaasUtil jaasutil = new JaasUtil (user, password);
if (jaasutil.authenticate())
subj = jaasutil.getSubject();
...
AccessPermission permEdit = new AccessPermission
                 ("/sample/editReg.jsp", "edit");
boolean bPermitted = JaasUtil.checkPermission
                 (subj, permEdit);
...