新手一个关于JDialog的问题

Question

牛人们！快帮我看看！
我想在JDialog上单击关闭按钮以后弹出的提示对话过上单击否！
保持JDialog在显示状态！当他关闭了！如何才能达到该效果！
import java.awt.*;
import java.awt.event.*;
import   javax.swing.*;
/**
 *
 * @author Administrator
 */
public class JPassWordDialog extends   JDialog implements ActionListener,WindowListener{
    private   String  userName,userPassword;
    private   JLabel  name,password;
    private   JTextField   nameField;
    private   JPasswordField  passwordField;
    
    public  JPassWordDialog()
    {
        this.setTitle("登陆对话框");
        
        this.name=new  JLabel("用户名：");
        this.password=new  JLabel("口令: ");
        
        Box  horBox=Box.createHorizontalBox();
        horBox.add(Box.createHorizontalStrut(50));
        
        Box  box=Box.createVerticalBox();
        box.add(Box.createVerticalStrut(40));
        box.add(this.name);
        box.add(Box.createVerticalStrut(20));
        box.add(this.password);
        box.add(Box.createVerticalStrut(100));
        horBox.add(box);
        
        horBox.add(Box.createHorizontalStrut(20));
        
        this.nameField=new  JTextField(5);
        this.nameField.addActionListener(this); 
        this.passwordField=new  JPasswordField(5);
        this.passwordField.addActionListener(this); 
        
        box=Box.createVerticalBox();
        box.add(Box.createVerticalStrut(40));
        box.add(this.nameField);
        box.add(Box.createVerticalStrut(20));
        box.add(this.passwordField);
        box.add(Box.createVerticalStrut(100));
        horBox.add(box);
        
        horBox.add(Box.createHorizontalStrut(90));
        
        Container  contentPane=this.getContentPane();
        contentPane.add(horBox);
        
        this.setSize(350,200); 
        this.setVisible(true); 
        this.validate();
        this.addWindowListener(this); 
    }
    
    public  void  setCode(String name,String password)
    {
        this.userName=name;
        this.userPassword=password;
    }   
    public void actionPerformed(ActionEvent e) {
        if(e.getSource()==this.nameField)
        {
            this.passwordField.requestFocus();
        }
        else  if(e.getSource()==this.passwordField)
        {  
            if(this.userName.equals(this.nameField.getText()) && this.userPassword.equals((String.copyValueOf(this.passwordField.getPassword()))))
            {
                 JOptionPane.showMessageDialog(this,"恭喜了！","登陆消息框",JOptionPane.INFORMATION_MESSAGE);
                 this.dispose();
            }
            else
            {
                JOptionPane.showMessageDialog(this,"密码或用户名不对！请重新输入!","登陆消息框",JOptionPane.ERROR_MESSAGE);
            }
        }
    }    public void windowOpened(WindowEvent e) {
      
    }    public void windowClosing(WindowEvent e) {
        int  result=JOptionPane.showConfirmDialog(this,"是否退出本系统！","退出消息框", JOptionPane.YES_NO_OPTION,JOptionPane.QUESTION_MESSAGE);
        if(result==JOptionPane.YES_OPTION)
        {
            System.exit(0);
        }
        else  if(result==JOptionPane.NO_OPTION)
        {
            this.setVisible(true);
            this.validate();
        }
    }    public void windowClosed(WindowEvent e) {
        
    }    public void windowIconified(WindowEvent e) {
        
    }    public void windowDeiconified(WindowEvent e) {
       
    }    public void windowActivated(WindowEvent e) {
      
    }    public void windowDeactivated(WindowEvent e) {
        
    }
}
谢谢！

Answer 1

 public void windowClosing(WindowEvent e) { 
        int  result=JOptionPane.showConfirmDialog(this,"是否退出本系统！","退出消息框", JOptionPane.YES_NO_OPTION,JOptionPane.QUESTION_MESSAGE); 
        if(result==JOptionPane.YES_OPTION) 
        { 
            System.exit(0); 
        } 
        else  if(result==JOptionPane.NO_OPTION) 
        { 
            [color=#FF0000]JPassWordDialog j = new JPassWordDialog();
            j.setVisible(true);        } 
    } [/color]
我试了  这样就可以解决你的问题了

Answer 2

 public void windowClosing(WindowEvent e) { 
        int  result=JOptionPane.showConfirmDialog(this,"是否退出本系统！","退出消息框", JOptionPane.YES_NO_OPTION,JOptionPane.QUESTION_MESSAGE); 
        if(result==JOptionPane.YES_OPTION) 
        { 
            System.exit(0); 
        } 
        else  if(result==JOptionPane.NO_OPTION) 
        { 
            JPassWordDialog j = new JPassWordDialog();
            j.setVisible(true);        } 
    } 我试了  这样就可以解决你的问题了