need help on my CONTROLLER.

please do inspect my code please, any error? in my net bean, its show the overall of the coding was red color.

here is the code :

<%--
    Document   : updateAssignment
    Created on : Jan 18, 2011, 2:09:56 PM
    Author     : Khalid Bin Dris 2008401558
--%>

<%@page contentType="text/html" pageEncoding="UTF-8"%>
<%@page import="java.util.*,java.sql.*" %>
  <%@ page language="java" import="javazoom.upload.*,java.util.*" %>
<%@ page errorPage="ExceptionHandler.jsp" %>
<%@page import="java.util.*" %>
<%@page import="java.lang.*" %>
<jsp:useBean id="idH" class="Entity.AssignmentMark" scope="request" />
<jsp:setProperty name="idHandler" property="*" />
<jsp:useBean id="upBean" scope="page" class="javazoom.upload.UploadBean" >
  <jsp:setProperty name="upBean" property="folderstore" value="C:\Users\Moon\Documents\NetBeansProjects\EAGM\web\UploadedFiles\AssignmentsMark" />
  <jsp:setProperty name="upBean" property="overwrite" value="true" />
</jsp:useBean>

<%
String assPath="" ;
      if (MultipartFormDataRequest.isMultipartFormData(request))
      {
         // Uses MultipartFormDataRequest to parse the HTTP request.
         MultipartFormDataRequest mrequest = new MultipartFormDataRequest(request);

         String comment=mrequest.getParameter("subInstComment");
         String mark = mrequest.getParameter("subMark");
         String percentage=mrequest.getParameter("subStudPercentage");
         String subid=mrequest.getParameter("subId");

         idH.setSubInstcomment(mrequest.getParameter("subInstComment"));
         idH.setSubmark(Integer.parseInt(mrequest.getParameter("subMark")));
         idH.setSubstudpercentage(Integer.parseInt(mrequest.getParameter("subStudPercentage")));


         String todo = null;
         if (mrequest != null) todo = mrequest.getParameter("todo");
	     if ( (todo != null) && (todo.equalsIgnoreCase("upload")) )
	     {
                Hashtable files = mrequest.getFiles();
                if ( (files != null) && (!files.isEmpty()) )
                {
                    UploadFile file = (UploadFile) files.get("uploadfile");
                    assPath+=file.getFileName();
                    idH.setSubassignmentfile(assPath);
                    if (file != null) //out.println("<li>Form field : uploadfile"+"<BR> Uploaded file : "+file.getFileName()+" ("+file.getFileSize()+" bytes)"+"<BR> Content Type : "+file.getContentType()+"directory: "+assPath);
                    // Uses the bean now to store specified by jsp:setProperty at the top.
                    upBean.store(mrequest, "uploadfile");

                }
	     }

   String sql="UPDATE SUBMISSION SET SUBINSTCOMMENT='"+comment;
   sql+="', SUBMARK='"+mark;
   sql+="', SUBSTUDPERCENTAGE='"+percentage;
   sql+="', SUBASSIGNMENTFILE='"+assPath;
   sql+="' WHERE SUBID='"+subid+"'";
   idH.updateSubmission(sql);
      }


   //String sql2="UPDATE SUBMISSION SET SUBINSTCOMMENT='mende nih?', SUBMARK='20',SUBSTUDPERCENTAGE='5',SUBASSIGNMENTFILE='Art_8_94.pdf' where SUBID='100000022'";


/*
idHandler.setSubinstcomment(request.getParameter("subInstComment"));
idHandler.setSubmark(Integer.parseInt(request.getParameter("subMark")));
idHandler.setSubstudpercentage(Integer.parseInt(request.getParameter("subStudPercentage")));
idHandler.setSubid(request.getParameter("subId"));


   String sql="UPDATE SUBMISSION SET SUBINSTCOMMENT='"+idHandler.getSubinstcomment();
   sql+="', SUBMARK='"+idHandler.getSubmark();
   sql+="', SUBSTUDPERCENTAGE='"+idHandler.getSubstudpercentage();
   sql+="' WHERE SUBID='"+idHandler.getSubid()+"'";

   idHandler.updateSubmission(sql);
*/
   response.sendRedirect("../boundary/instructorStudent.jsp");
%>

error at line 32,33,34,46,59

thanks :)