Java.util.HashMap cannot be cast to org.apache.struts.action.ActionForm

Question

Hi!
anybody could help me?
i am getting java.util.HashMap cannot be cast to org.apache.struts.action.ActionForm error when I run my jsp...
heres my code :
CommentAction.java
package com.provintl.rmis.actions;
import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
import javax.sql.DataSource;
import org.apache.struts.action.Action;
import org.apache.struts.action.ActionForm;
import org.apache.struts.action.ActionForward;
import org.apache.struts.action.ActionMapping;
import com.provintl.rmis.forms.CommentForm;
public class CommentAction extends Action {
     Statement stmt = null;
     Connection con = null;
     javax.sql.DataSource dataSource;
     PreparedStatement ps = null;
     ResultSet rs=null;
     byte updFlg = 0;
     Map commentlist = new HashMap();
     /* (non-Javadoc)
     * @see org.apache.struts.action.Action#execute(org.apache.struts.action.ActionMapping, org.apache.struts.action.ActionForm, javax.servlet.http.HttpServletRequest, javax.servlet.http.HttpServletResponse)
     @Override
     public ActionForward execute(ActionMapping mapping, ActionForm form,
               HttpServletRequest request, HttpServletResponse response)
     throws Exception {
          CommentForm commentForm = new CommentForm();
          Date date = commentForm.getDaterecord();
          String comment = commentForm.getComment();
          //TODO : temporary 1 == rose
          int userID =1;
          int appID =1;
          String SelectQry = "SELECT "+
                                   "APPLICANT_TBL.CHFNAME, "+
                                   "APPLICANT_TBL.CHLNAME, "+
                                   "APPLICANT_TBL.INTAPPID, "+
                                   "USERHST_TBL.CHCOMMENT, "+
                                   "USERHST_TBL.DTDATECREATED, "+
                                   " USERHST_TBL.INTHSTID "+
                                   "FROM "+
                                   "APPLICANT_TBL "+
                                   "INNER JOIN USERHST_TBL ON (APPLICANT_TBL.INTAPPID = USERHST_TBL.INTAPPID) " +
                                   "WHERE APPLICANT_TBL.CHFNAME ='"+request.getParameter("first")+"' " +
                                             "AND APPLICANT_TBL.CHLNAME ='"+request.getParameter("last")+"'";
          try {
               dataSource = (DataSource)getDataSource(request, "RMIS");
               con = dataSource.getConnection();
               con.setAutoCommit(false);
               stmt = con.createStatement();
               System.out.println("database connected");
               rs = stmt.executeQuery(SelectQry);
               System.out.println("database connected");
               int ctr = 1;
               while(rs.next()){
                    commentlist.put(ctr,new CommentForm(rs.getString("CHFNAME"),rs.getDate("DTDATECREATED")));
                    ctr++;
               if(updFlg !=0){
                    String insQry = "INSERT INTO RECRUIT.USERHST_TBL (CHCOMMENT, INTUSERID, INTAPPID)" +
                    "VALUES ('"+comment+"',"+userID+","+appID+")";
                    stmt.executeUpdate(insQry);
                    con.commit();
                    updFlg = 0;
               HttpSession session = request.getSession();
               session.setAttribute("commentlist", commentlist);
               //con.setAutoCommit(true);
          } catch (SQLException se) {
               System.out.println("We got an exception while preparing a statement:" +
               "Probably bad SQL.");
               System.out.println(SelectQry);
               se.printStackTrace();
               //System.exit(1);
          finally {
               try {
                    rs.close();
                    stmt.close();
                    con.close();
               } catch (SQLException e) {
                    e.printStackTrace();
          return mapping.findForward("comment");
commentform.jsp
=============
<%@ taglib uri="http://jakarta.apache.org/struts/tags-html"     prefix="html"%>
<%@ taglib uri="http://java.sun.com/jstl/core_rt" prefix="c"%>
<%@ taglib uri="http://java.sun.com/jstl/sql_rt" prefix="sql"%>
<%@ taglib uri="/WEB-INF/struts-logic.tld" prefix="logic" %>
<%@ taglib uri="/WEB-INF/struts-bean.tld" prefix="bean"%>
<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
pageEncoding="ISO-8859-1"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<script>
function putLabel(lbl, formName){
if (opener && !opener.closed){
opener.document.addapp.jobposition.value=lbl;
window.close();
</script>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>List of open positions</title>
</head>
<body>
<h2>Job Positions Available</h2>
<%
int ctr = 1; %>
<logic:iterate id="myString" name="commentlist" scope="session">
<table width="100%" border="0">
<%
String bakcolor;
if((ctr % 2) == 0){
     bakcolor = "WHITE";
     ctr++;
else{
     bakcolor = "SILVER";
     ctr++;
%>
<tr><td bgcolor="<%= bakcolor %>">
<bean:write name="myString" property="value" />
</td></tr>
${commentlist}
</table>
</logic:iterate>
</body>
</html>
thank you in advance!

Answer 1

Shilnag wrote:
Hello guys,
I am new to java... I am trying to develop a web application using
1.Struts1.2
2.tomcat 5.5
3.eclipse 3.2.2Big mistake. Nobody new to Java should jump straight into webapps, let alone using a framework like Struts. Debatably, even Eclipse should be left alone.
It's precisely because of this that you're having problems. Presumably you're following a tutorial or something, but - as demonstrated - as soon as it goes wrong, you're stuck. Learn some core Java first, trust me