I need help passing a value to a method.

Question

Im fairly new to java.
I have this JSP that i would like to ultimately write it as a servlet. So if any one can help out with this as well, that would be great.
There's a code snippet at the bottom of my code that looks like this
        String operation = request.getParameter("actionMethod");
     String areaId = request.getParameter("areaId");
     List list = listOrders();I was wondering how i could pass the areaId value to the listOrders. That way i could use that to modify my sql depending on what areaid was selected.
here's a copy of my code.
<%@ page language="java" contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
<%@ page import="java.sql.*,java.util.*"%>
<%@ page import="com.fins.gt.server.*"%>
<%@ page import="com.fins.gt.util.*"%>
<%!
     // Eventually needs re-written as a servlet
     Connection getConnection(){
          String url="jdbc:as400://bigblue";
          Connection conn= null;
          try{
               Class.forName("com.ibm.as400.access.AS400JDBCDriver").newInstance();
               conn = DriverManager.getConnection(url,"prodtasv","prodtasv");
          }catch(Exception e){
          return conn;
     void closeConnection(Connection conn){
          try{
               conn.close();
          }catch(Exception e){
     List listOrders(){
        Connection conn = getConnection();
        if(conn==null)
                return new ArrayList();
        Statement stmt = null;
        ResultSet rs = null;
        List list = new ArrayList();
        try{
             stmt = conn.createStatement();
             rs = stmt.executeQuery("SELECT * FROM AIMDATA.DVCR_AREA_LOOKUP");
             while(rs.next()){
                    Map map = new HashMap();
                    map.put("AREAID",new Long(rs.getLong("AREAID")));                    
                    map.put("SICD",rs.getString("SICD"));
                    map.put("SKCD",rs.getString("SKCD"));
                    map.put("DESCRIPTION",rs.getString("DESCRIPTION"));
                    list.add(map);
             rs.close();
             stmt.close();
        }catch(Exception e){
        closeConnection(conn);
        return list;
%>
<%
     // GridServerHandler is server side wrapper, you can get all the info posted to server in your Java way instead of JavaScript
     GridServerHandler gridServerHandler=new GridServerHandler(request,response);
     String operation = request.getParameter("actionMethod");
     if("save".equals(operation)){
     }else { //client is retrieving data
          List list = listOrders();
         //get how many records we are sending
          int totalRowNum= list.size();
          gridServerHandler.setTotalRowNum(totalRowNum);
          //if you would like paginal output on server side, you may interested in the following 4 methods
          // gridServerHandler.getStartRowNum() first record no of current page
          // gridServerHandler.getEndRowNum() last record no of current page
          // gridServerHandler.getPageSize() how many records per page holds
          // gridServerHandler.getTotalRowNum() how many records in total
          // we take map as this sample, you need to use gridServerHelp.setData(list,BeanClass.class); to deal with bean
          gridServerHandler.setData(list);
            // gridServerHandler.setException("your exception message");
          //print out JSON string to client
          out.print(gridServerHandler.getLoadResponseText());          
          //you could get the posted data by calling gridServerHandler.getLoadResponseText() and obtain more flexibility, such as chaning contentType or encoding of response.
%>

Answer 1

Sorry i uploaded the wrong code and the edit wasn't working for me.
<%@ page language="java" contentType="text/html; charset=UTF-8"
     pageEncoding="UTF-8"%>
<%@ page import="java.sql.*,java.util.*"%>
<%@ page import="com.fins.gt.server.*"%>
<%@ page import="com.fins.gt.util.*"%>
<%!Connection getConnection() {
          String url = "jdbc:as400://bigblue";
          Connection conn = null;
          try {
               Class.forName("com.ibm.as400.access.AS400JDBCDriver").newInstance();
               conn = DriverManager.getConnection(url, "prodtasv", "prodtasv");
          } catch (Exception e) {
          return conn;
     void closeConnection(Connection conn) {
          try {
               conn.close();
          } catch (Exception e) {
     List listOrders() {
          Connection conn = getConnection();
          if (conn == null)
               return new ArrayList();
          Statement stmt = null;
          ResultSet rs = null;
          List list = new ArrayList();
          try {
               stmt = conn.createStatement();
               rs = stmt
                         .executeQuery("SELECT * FROM AIMDATA.DVCR_DETAIL WHERE AREAID = 1");
               while (rs.next()) {
                    Map map = new HashMap();
                    map.put("DETAILID", new Long(rs.getLong("DETAILID")));
                    map.put("AREAID", new Long(rs.getLong("AREAID")));
                    map.put("DVCRID", new Long(rs.getLong("DVCRID")));
                    map.put("DEFECTID", new Long(rs.getLong("DEFECTID")));
                    map.put("DESCRIPTION", rs.getString("DESCRIPTION"));
                    map.put("WRNO", new Long(rs.getLong("WRNO")));
                    map.put("WRLINENO", new Long(rs.getLong("WRLINENO")));
                    list.add(map);
               rs.close();
               stmt.close();
          } catch (Exception e) {
          closeConnection(conn);
          return list;
     }%>
<%
     // GridServerHandler is server side wrapper, you can get all the info posted to server in your Java way instead of JavaScript
     GridServerHandler gridServerHandler = new GridServerHandler(
               request, response);
     String operation = request.getParameter("actionMethod");
     String areaId = request.getParameter("areaId");
     List list = listOrders();
     //get how many records we are sending
     int totalRowNum = list.size();
     gridServerHandler.setTotalRowNum(totalRowNum);
     // we take map as this sample, you need to use gridServerHelp.setData(list,BeanClass.class); to deal with bean
     gridServerHandler.setData(list);
     // gridServerHandler.setException("your exception message");
     //print out JSON string to client
     out.print(gridServerHandler.getLoadResponseText());
     //you could get the posted data by calling gridServerHandler.getLoadResponseText() and obtain more flexibility, such as chaning contentType or encoding of response.
%>