Location Manager - Java Swing / DB Related

Question

OK the following code is part of my project. I have a Location manager which will manage the location of items within a warehouse. The panel itself contains a Combo box with Product ID's. What I want to do is when an item is selected from the combo box, the data associated with this selected item (product id and product location) is displayed in two textfields below the combo box. Here is my code:
package orderproc;
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import java.sql.Connection;
import java.sql.Statement;
import java.sql.DriverManager;
import java.sql.SQLException;
import java.sql.ResultSet;
import java.net.URL;
import java.sql.*;
* <p>Title: </p>
* <p>Description: </p>
* <p>Copyright: Copyright (c) 2003</p>
* <p>Company: </p>
* @author unascribed
* @version 1.0
public class EditItemLoc extends JApplet implements ActionListener, ItemListener {
JPanel westPanel;
JPanel eastPanel;
JPanel editPanel;
GridBagLayout gbl;
GridBagConstraints gbc;
protected JLabel lblProductDescription, lblProductID, lblLocation, lblNewLoc;
protected JTextField txtProductID, txtLocation, txtNewLoc;
DefaultComboBoxModel model = new DefaultComboBoxModel();
JComboBox cmbProductDescription = new JComboBox(model);
String res;
JButton btnExit, btnCancel, btnSubmit;
public EditItemLoc() {
try
//connect to database
Class.forName("sun.jdbc.odbc.JdbcOdbcDriver");
System.out.println("Drivers loaded");
String url = "jdbc:odbc:wms";
Connection con = DriverManager.getConnection(url,"root","");
System.out.println("Connection established");
Statement stmt = con.createStatement();
System.out.println("Statement created");
ResultSet res = stmt.executeQuery("SELECT ProductDescription FROM productinfo");
while(res.next())
{// add the result set ProductDescription to the combobox
cmbProductDescription.addItem(res.getString("ProductDescription"));
catch(Exception e)
gbl = new GridBagLayout();
gbc = new GridBagConstraints();
westPanel = new JPanel();
westPanel.setLayout(gbl);
eastPanel = new JPanel();
getContentPane().setLayout(new BorderLayout());
getContentPane().add(westPanel, BorderLayout.CENTER);
getContentPane().add(eastPanel, BorderLayout.SOUTH);
lblProductDescription = new JLabel("ProductDescription: ");
lblProductID = new JLabel("Product ID: ");
lblLocation = new JLabel("Current Location: ");
lblNewLoc = new JLabel("New Location: ");
txtProductID = new JTextField(20);
txtLocation = new JTextField(10);
txtNewLoc= new JTextField(10);
btnSubmit = new JButton("Submit");
btnSubmit.addActionListener(this);
eastPanel.add(btnSubmit);
btnExit = new JButton("<<<<Back");
btnExit.addActionListener(this);
eastPanel.add(btnExit);
btnCancel = new JButton("Cancel");
btnCancel.addActionListener(this);
eastPanel.add(btnCancel);
gbc.anchor = GridBagConstraints.NORTHEAST; // Align labels
gbc.gridx = 1;
gbc.gridy = 1;
gbl.setConstraints(lblProductDescription, gbc);
westPanel.add(lblProductDescription);
gbc.gridx = 1;
gbc.gridy = 2;
gbl.setConstraints(lblProductID, gbc);
westPanel.add(lblProductID);
gbc.gridx = 1;
gbc.gridy = 3;
gbl.setConstraints(lblLocation, gbc);
westPanel.add(lblLocation);
gbc.gridx = 1;
gbc.gridy = 4;
gbl.setConstraints(lblNewLoc, gbc);
westPanel.add(lblNewLoc);
gbc.anchor = GridBagConstraints.NORTHWEST;
gbc.gridx = 2;
gbc.gridy = 1;
gbl.setConstraints(cmbProductDescription, gbc);
// Register item listener
westPanel.add(cmbProductDescription);
gbc.gridx = 2;
gbc.gridy = 2;
gbl.setConstraints(txtProductID, gbc);
txtProductID.setEditable(false);
txtProductID.setText("");
westPanel.add(txtProductID);
gbc.gridx = 2;
gbc.gridy = 3;
gbl.setConstraints(txtLocation, gbc);
txtLocation.setEditable(false);
txtLocation.setText("");
westPanel.add(txtLocation);
gbc.gridx = 2;
gbc.gridy = 4;
gbl.setConstraints(txtNewLoc, gbc);
txtNewLoc.setEditable(true);
txtNewLoc.setText("");
westPanel.add(txtNewLoc);
public void itemStateChanged(ItemEvent ie) // Item event handling
if(ie.getSource() == cmbProductDescription)
public void actionPerformed(ActionEvent ae) // Action event handling
if(ae.getSource() == btnExit)
setVisible(false);
public void init()
EditItemLoc myEditItemLoc = new EditItemLoc();

Answer 1

Not sure. I am using a JList to do a very similar thing to you and it works for me. They share same datamodel so I thought it would work for you.
try passing it to a textfield & seeing if that gives you the correct database entry.
             aName = new JTextField(20);
             aName.addActionListener(new DetailListener());
             String name = listModel.getElementAt(list.getSelectedIndex()).toString();
             aName.setText(name);
    class DetailListener implements ActionListener {
        public void actionPerformed(ActionEvent e) {
            try{  
                 details();
               }  // end try
               catch (Exception exc){}
public void details(){
//.... your resultset here
}That way, you are dealing with a string & not an index. I am a novice at this & this may not be the 'correct' way to do it but I find it easier to deal with a string than an index. woks for me at the moment :)