How can transfer data from a dialog to another panel?

Question

Will anyone help me?Thanks.
In our project,When the user need to fill some data into the textfield in a panel,he can simplify this action by click a button,when the button is clicked,then a dialog which contains a table of all the imformation of all customers will show,then the user can select one customer's information from the table,after click a button such as "OK",the selected information will show in corresponding textfiled in another panel.Because the dialog and the panel are two
different object,so how can I transfer the data selected from the dialog to the panel and show the updated information timely??

Answer 1

try this program. it exchanges some data between s adialog and a frame.
akz
* @version 1.20 01 Sep 1998
* @author Cay Horstmann
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
public class DataExchangeTest extends JFrame
implements ActionListener
{  public DataExchangeTest()
{  setTitle("DataExchangeTest");
setSize(300, 300);
JMenuBar mbar = new JMenuBar();
setJMenuBar(mbar);
JMenu fileMenu = new JMenu("File");
mbar.add(fileMenu);
connectItem = new JMenuItem("Connect");
connectItem.addActionListener(this);
fileMenu.add(connectItem);
exitItem = new JMenuItem("Exit");
exitItem.addActionListener(this);
fileMenu.add(exitItem);
public void actionPerformed(ActionEvent evt)
{  Object source = evt.getSource();
if (source == connectItem)
{  ConnectInfo transfer= new ConnectInfo("yourname", "pw");
if (dialog == null)
dialog = new ConnectDialog(this);
if (dialog.showDialog(transfer))
{  String uname = transfer.username;
String pwd = transfer.password;
Container contentPane = getContentPane();
contentPane.add(new JLabel("username=" + uname + ", password=" + pwd),"South");
validate();
else if(source == exitItem)
System.exit(0);
public static void main(String[] args)
{  JFrame f = new DataExchangeTest();
f.show();
private ConnectDialog dialog = null;
private JMenuItem connectItem;
private JMenuItem exitItem;
class ConnectInfo
{  public String username;
public String password;
public ConnectInfo(String u, String p)
{ username = u; password = p; }
class ConnectDialog extends JDialog implements ActionListener
{  public ConnectDialog(JFrame parent)
{  super(parent, "Connect", true);
Container contentPane = getContentPane();
JPanel p1 = new JPanel();
p1.setLayout(new GridLayout(2, 2));
p1.add(new JLabel("User name:"));
p1.add(username = new JTextField(""));
p1.add(new JLabel("Password:"));
p1.add(password = new JPasswordField(""));
contentPane.add("Center", p1);
Panel p2 = new Panel();
okButton = addButton(p2, "Ok");
cancelButton = addButton(p2, "Cancel");
contentPane.add("South", p2);
setSize(240, 120);
     //custom method to create and buttons to a container
JButton addButton(Container c, String name)
{  JButton button = new JButton(name);
button.addActionListener(this);
c.add(button);
return button;
public void actionPerformed(ActionEvent evt)
{  Object source = evt.getSource();
if(source == okButton)
{  ok = true;
setVisible(false);
else if (source == cancelButton)
setVisible(false);
public boolean showDialog(ConnectInfo transfer)
{  username.setText(transfer.username);
password.setText(transfer.password);
ok = false;
show();
if (ok)
{  transfer.username = username.getText();
transfer.password = password.getText();
return ok;
private JTextField username;
private JTextField password;
private boolean ok;
private JButton okButton;
private JButton cancelButton;