Please Help with sql.Date problem

Question

I have spent alot of time on what I thought would be an otherwise simple task, and I beleive I am close to completion but I need some much needed help. I have posted various forms of my code to try and acheive the solution but the responses received have been limited.
I am trying to delete a record from a MS Access database where a Date/Time field in the database (Err_Date) equals a date entered by the user via a textbox.
I finally have gotten the correct record to delete from the database, but what is very strange is that Tomcat is throwing a 'java.lang.NullPointerException' error. Then when I re-open the database the correct record is deleted.
Here is my code:
<%@page import="java.sql.*"%>
<%@ page import="java.text.SimpleDateFormat"%>
<%@ page import="java.util.Date"%>
<%
Connection con = null;
try{
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
con = DriverManager.getConnection("jdbc:odbc:errorlog", "admin", "");
catch(Exception e){
     out.println(e.getMessage());
ResultSet rs=null;
Statement stmt=null;
try {
stmt=con.createStatement();
String end = request.getParameter("To");//FROM TEXTBOX
java.text.SimpleDateFormat df = new java.text.SimpleDateFormat ("dd/MM/yyyy");
java.util.Date d2 = df.parse(end);//CONVERT STRING TO UTIL DATE
java.sql.Date date2 = new java.sql.Date(d2.getTime());//CONVERT TO SQL
PreparedStatement stmnt = con.prepareStatement("DELETE FROM tblError WHERE Err_Date = ?");
stmnt.setDate(1, date2);
stmnt.executeUpdate();
stmnt.close();          
//CLOSE RESULT SET          
rs.close();
     stmt.close();
con.close();
//CATCH EXCEPTIONS
catch (SQLException e) {
     out.println(e.getMessage());
%>

Answer 1

well, in case anyone ever runs into a problem this stupid again the solution is as follows.
the code to:
1. retrieve date from text box
2. covert string into util date
3. convert util date into sql date
4. delete from database
is all correct.
the problem is that I previously used String sql="SOME SQL DELETE" and then executed the result set, which of course I then had to close. This wasn't working so I switched to a Prepared Statement. I forgot to remove the 'rs.close()' statement in my code. So Tomcat was trying to close a result set that was never opened...