JSP update using MySQL...Plz help

Can you try and check if anything is wrong or missing in the code coz i keep getting this error msg:
org.apache.jasper.JasperException: Duplicate key or integrity constraint violation, message from server: "Cannot add or update a child row: a foreign key constraint fails"
This is the code that i used:
<%@ page import = "java.sql.*" %>
<%@ page import = "java.util.*" %>
<HTML>
<TABLE BORDER=1 WIDTH="300" CELLPADDING=0 CELLSPACING=2>
<%!
Connection connection;
Statement statement;
ResultSet results;
%>
<title>Save Remarks</title>
<body><font size=+1>Remarks have been saved into the database</font>
<% Class.forName("com.mysql.jdbc.Driver").newInstance();
connection = DriverManager.getConnection("jdbc:mysql://localhost/test","sid","");
statement = connection.createStatement();
String qty = request.getParameter("qty");
String id = request.getParameter("id");
String tn = request.getParameter("tn");
String st = request.getParameter("st");
String pname = request.getParameter("pname");
String rmks = request.getParameter("rmks");
%>
<%
statement.executeUpdate("INSERT INTO members5(La_Na, Fi_Na, NRIC, Treatment_Notes, Small_Talks,
Remark) VALUES('"+id+"', '"+pname+"', '"+qty+"', '"+tn+"', '"+st+"', '"+rmks+"')");
statement.executeUpdate("UPDATE members5 SET Remark = "+rmks+" where La_Na =" +id);
%>
<%
results.close(); statement.close(); connection.close();
%>
<p>
<input type="Button" onClick="javascript:location.href='SearchMem.jsp'" value="Done">
</p>
</TABLE></BODY></HTML>
Pls do help... and reply ASAP... thanks...

The message says it all - there's another table to which your members5 table is related. And one of the columns in member5 is a foreign key and you are inserting a row into members5 with a foreignkey value not existing in the other table. First insert the appropriate row in the other table and then insert into members5

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