Submit Form data to help with the problem is NULL SERVLET SUBMIT! !

<% CustomerDao dao = new CustomerDao ();
List clist = dao.allCustomers ();
for (Customer cus: clist) {
out.println ("");
if (! cus.getCno (). equals (session.getAttribute ("UpCno") ) ) {

out.println ("");
out.println ("");
out.println ("");
out.println (" ");
out.println (" ");
out.println ("");
} else {
out.println ("");
out.println (" ");
out.println (" ");
out.println (" ");
out.println ("");
out.println (" ");
out.println ("");
}
}


%>

number	Name	phone	increase
" + cus.getCno () + "	" + cus.getCname () + "	" + cus.getCphone () + "	delete	edit