import  javax.swing.*;
 import  java.awt.event.ActionListener;
 import  java.awt.event.WindowAdapter;
 import  java.awt.event.WindowEvent;
 import  java.awt.event.ActionEvent;
 import  java.awt.*;

 public   class  ConnectPererach
{
     public   static   void  main(String[] args)
    {
        ConnectPererachFrame frame =  new  ConnectPererachFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.show();
    }
}

 class  ConnectPererachFrame  extends  JFrame
{
     public  ConnectPererachFrame()
    {
        setTitle(" Вхід ");
        Toolkit kit = Toolkit.getDefaultToolkit();
        Dimension screenSize = kit.getScreenSize();
         int  screenHeight = screenSize.height;
         int  screenWidth = screenSize.width;

        setSize(screenWidth / 2 , screenHeight/ 2 );
        setLocation(screenWidth/ 4 , screenHeight/ 4 );

        addWindowListener( new  WindowAdapter()
        {
             public   void  windowClosing(WindowEvent e)
            {
                System.exit( 0 );
            }
        });

        JMenuBar mbar =  new  JMenuBar();
        setJMenuBar(mbar);
        JMenu fileMenu =  new  JMenu("Файл");
        mbar.add(fileMenu);

        connectItem =  new  JMenuItem("Логін");
        connectItem.addActionListener( new  ConnectAction());
        fileMenu.add(connectItem);

        exitItem =  new  JMenuItem("Вихід");
        exitItem.addActionListener( new  ActionListener()
        {
             public   void  actionPerformed(ActionEvent event)
            {
                System.exit( 0 );
            }
        });
        fileMenu.add(exitItem);
        textArea =  new  JTextArea();
    }

     private  PasswordChooser dialog =  null ;
     private  JMenuItem connectItem;
     private  JMenuItem exitItem;
     private  JTextArea textArea;

     private   class  ConnectAction  implements  ActionListener
    {
         public   void  actionPerformed(ActionEvent event)
        {
             if  (dialog  ==  null )
                dialog =  new  PasswordChooser();
            dialog.setUser( new  User("u016", null ));
        
             if  (dialog.showDialog(ConnectPererachFrame. this ,"Вхід у систему"));
            {
                User u = dialog.getUser();
            }
        }
    }
}

 class  PasswordChooser  extends  JPanel
{
     public  PasswordChooser()
    {
        setLayout( new  BorderLayout());
        
        JPanel panel =  new  JPanel();
        panel.setLayout( new  GridLayout( 2 ,  2 ));
        panel.add( new  JLabel("Мережеве ім'я:"));
        panel.add(username =  new  JTextField(""));
        panel.add( new  JLabel("Пароль:"));
        panel.add(password =  new  JPasswordField(""));
        add(panel,BorderLayout.CENTER);

        okButton =  new  JButton("Підтвердити");
        okButton.addActionListener( new  ActionListener()
        {
             public   void  actionPerformed(ActionEvent avent)
            {
                ok = true;
                dialog.setVisible(false);
            }
        });

        cancelButton =  new  JButton("Відмовитись");
        cancelButton.addActionListener( new  ActionListener()
        {
             public   void  actionPerformed(ActionEvent event)
            {
                dialog.setVisible(false);
            }
        });

        JPanel buttonPanel =  new  JPanel();
        buttonPanel.add(okButton);
        buttonPanel.add(cancelButton);
        add(buttonPanel, BorderLayout.SOUTH);

   }

    public   void  setUser(User u)
   {
       username.setText(u.getName());
   }


    public  User getUser()
   {
        return   new  User(username.getText(),password.getPassword());
   }

    public   boolean  showDialog(Component parent, String title)
   {
       ok = false;

       Frame owner =  null ;
        if  (parent  instanceof  Frame)
           owner = (Frame) parent;
        else 
           owner = (Frame)SwingUtilities.getAncestorOfClass(Frame. class , parent);

        if  (dialog ==  null  || dialog.getOwner() != owner)
       {
           dialog =  new  JDialog(owner, true);
           dialog.getContentPane().add( this );
           dialog.pack();
       }

       dialog.setTitle(title);
       dialog.show();
        return  ok;
   }

     private  JTextField username;
     private  JPasswordField password;
     private   boolean  ok;
     private  JButton okButton;
     private  JButton cancelButton;
     private  JDialog dialog;
}

 class  User
{
     public  User(String aName,  char [] aPassword)
    {
        name = aName;
        password = aPassword;
    }

     public  String getName() { return  name;}
     public   char [] getPassword() { return  password;}

     public   void  setName(String aName) { name = aName;}
     public   void  setPassword( char [] aPassword) { password = aPassword;}

     private  String name;
     private   char [] password;
}

  public   boolean  showDialog(Component parent, String title)
   {
       ok = false;

       Frame owner =  null ;
        if  (parent  instanceof  Frame)
           owner = (Frame) parent;
        else 
           owner = (Frame)SwingUtilities.getAncestorOfClass(Frame. class , parent);

        if  (dialog ==  null  || dialog.getOwner() != owner)
       {
           dialog =  new  JDialog(owner, true);
           setLayout( new  GridLayout( 2 ,  2 ));
           dialog.getContentPane().add( this ,BorderLayout.CENTER);
           dialog.pack();
       }

       dialog.setTitle(title);
       Rectangle gg = owner.getBounds();
        int  x = ( int ) gg.getX();
        int  y = ( int ) gg.getY();
        int  height = ( int ) gg.getHeight();
        int  width = ( int ) gg.getWidth();

       dialog.setLocation(x+height/ 4 , y+width/ 4 );
       dialog.show();
        return  ok;
   }

 char [] pass = password.getPassword();