MySQL Posting Errors With JSP?

Have an html page with form data manipulate a MySQL database.i KNOW my html form and its data are correct so my problem lies within the JSP codehere it is.

<%@ page import="java.sql.*" %>
<%
String connectionURL = "jdbc:mysql:sql2.njit.edu:3306/mrn5";
Connection connection = null;

[code]....

Inputting fields works but i cannot delete, this code so things delete from the database properly?

statement.executeUpdate("DELETE FROM Members WHERE (clubMembers = '"memb"')");
statement.executeUpdate("DELETE FROM Members WHERE (MemberAddress = '"addr"')");
statement.executeUpdate("DELETE FROM Members WHERE (MemberTelephoneNumber = '"phon"')");

[code]....