insert command not give me error and not give result

hi master
sir i use this blow code for insertion and show recored

this code show record in jsp page but not insert record and not any error

<%@page contentType="text/html"%> 
<%@page pageEncoding="UTF-8"%> 
<%@taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%> 
--%> 
 
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" 
   "http://www.w3.org/TR/html4/loose.dtd"> 
<html> 
    
<%@ page import="java.sql.*,java.util.*" %> 
<%@ page import="javax.sql.DataSource" %> 
<%@ page import="javax.naming.Context" %> 
<%@ page import="javax.naming.InitialContext"%> 
 
    <head> 
        <meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 
        <title>JSP Page</title> 
    </head> 
    <body> 
    <table><tr><td>test fahim</td></tr> 
        
        <% Context initContext = new InitialContext(); 
        Context envContext  = (Context)initContext.lookup("java:/comp/env"); 
        DataSource ds = (DataSource)envContext.lookup("jdbc/oracle"); 
        Connection conn = ds.getConnection(); 
        Statement stmt = conn.createStatement ();     
        String sql= "insert into test1 values('ffff','rrrr',888)";              ???????????????????????? 
                    stmt.executeUpdate (sql);                                            ??????????????????????????? 
                    ResultSet rset = stmt.executeQuery ("SELECT accid FROM accbal"); 
        
                    while (rset.next ()) {         
                           %> 
        
        <tr><td> <% out.println(rset.getString ("accid")); %> </td></tr> 
                
        <% } 
                    rset.close(); 
                    stmt.close(); 
                    conn.close(); 
                    %> 
    </table> 
    <h1>JSP***|||||||||||||||||||||||**** Page</h1> 
    <h1>JSP*************** Page</h1> 
 
    <br/> 
    JavaServer Faces Welcome Page 
    
    <%-- 
    This example uses JSTL, uncomment the taglib directive above. 
    To test, display the page like this: index.jsp?sayHello=true&name=Murphy 
    --%> 
    <%-- 
    <c:if test="${param.sayHello}"> 
         
        Hello ${param.name}! 
    </c:if> 
    --%> 
    
    </body> 
</html>

thank's

aamir

[BSouther: Added UBB CODE tags]
[ April 10, 2007: Message edited by: Ben Souther ]