Program z opcja logowania

0

Witam próbuje napisać program, którym po zalogowaniu użytkownik będzie miał dwie opcje więcej do wyboru tzn. 2 buttony tj. jButton3 i 4 będą widoczne. Niestety troszkę sobie z tym nie radzę proszę o pomoc.

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.text.NumberFormat;
import java.util.*;

public class Konwerter
{
     public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new KonwerterFrame().setVisible(true);
            }
        });
    }
}

class KonwerterFrame extends JFrame
{
	public KonwerterFrame()
   {
      initComponents();
      setTitle("Konwerter Jednostek");

		Toolkit kit = Toolkit.getDefaultToolkit();
		Dimension screenSize = kit.getScreenSize();
		int screenWidth = screenSize.width;
		int screenHeight = screenSize.height;
		setSize((screenWidth/3)-22, (screenHeight/2)-50);
		setLocationByPlatform(true);

      // Opcja Zamknij
      jMenuItem2.addActionListener(new ActionListener()
		{
      	public void actionPerformed(ActionEvent event)
         {
         	System.exit(0);
         }
		});

      // Opcja Zaloguj
      jMenuItem1.addActionListener(new ConnectAction());

      // Pomoc
      jMenuItem3.addActionListener(new ActionListener()
      {
      	public void actionPerformed(ActionEvent event)
         {
         	if (dialog2 == null)
            dialog2 = new PomocDialog(KonwerterFrame.this);
            dialog2.setVisible(true);
         }
      });
      
      // Autorzy
      jMenuItem4.addActionListener(new ActionListener()
      {
	      public void actionPerformed(ActionEvent event)
	      {
		      if (dialog3 == null)
		      dialog3 = new AutorzyDialog(KonwerterFrame.this);
		      dialog3.setVisible(true);
		   }
		});
   }

   private PasswordChooser dialog = null;
   private PomocDialog dialog2;
   private AutorzyDialog dialog3;
   private BladDialog dialog4;

	private class ConnectAction implements ActionListener
   {
    	public void actionPerformed(ActionEvent event)
		{
      	// jeśli to 1. raz tworzy okno dialogowe
         if (dialog == null) dialog = new PasswordChooser();
		
         // ustawienie wartosci domyslnych
         dialog.setUser(new User("admin", null));
		
	    	// wyswietlenie okna dialogowego
	   	if (dialog.showDialog(KonwerterFrame.this, "Zaloguj_tytuł"))
         {
         	// pobranie danych uzytkownika w przypaku zatwierdzenia
				User u = dialog.getUser();
         }
		}
   }
    
	class PomocDialog extends JDialog
   {
    	public PomocDialog(JFrame owner)
      {
      	super(owner, "Pomoc", true);

         JButton ok = new JButton("Ok");
         ok.addActionListener(new ActionListener()
         {
         	public void actionPerformed(ActionEvent event)
            {
            	setVisible(false);
            }
         });

         JPanel panelPomoc = new JPanel();
         JPanel panelPomoc2 = new JPanel();
         panelPomoc.add(ok, BorderLayout.SOUTH);
         add(panelPomoc, BorderLayout.SOUTH);
         add(panelPomoc2);
         panelPomoc.setBackground(new Color(102, 153, 255));
         panelPomoc2.setBackground(new Color(102, 153, 255));

         setSize(250,150);
      }
   }
   
   class AutorzyDialog extends JDialog
   {
    	public AutorzyDialog(JFrame owner)
      {
      	super(owner, "Autorzy", true);

	      JTextArea autorzy = new JTextArea();
	      JTextArea autorzy1 = new JTextArea();

	      autorzy1.setText("AUTORZY:");
	      autorzy1.setEditable(false);
	      autorzy1.setBackground(new Color(102, 153, 255));
	      autorzy1.setFont(new Font("Trebuchet MS", 1, 16));
	      
	      autorzy.setText("Konrad Jasionowicz \nTomasz Karwat");
	      autorzy.setEditable(false);
	      autorzy.setBackground(new Color(102, 153, 255));
	      autorzy.setFont(new Font("Trebuchet MS", 1, 16));

         JButton ok = new JButton("Ok");
         ok.addActionListener(new ActionListener()
         {
         	public void actionPerformed(ActionEvent event)
            {
            	setVisible(false);
            }
         });

         JPanel panelA = new JPanel();
         JPanel panelA1 = new JPanel();
         
         panelA1.add(autorzy1, BorderLayout.CENTER);
         panelA1.add(autorzy, BorderLayout.CENTER);
         add(panelA1, BorderLayout.CENTER);
         panelA1.setBackground(new Color(102, 153, 255));
         
         panelA.add(ok, BorderLayout.SOUTH);
         add(panelA, BorderLayout.SOUTH);
         panelA.setBackground(new Color(102, 153, 255));

         setSize(250,150);
      }
   }
   
   class BladDialog extends JDialog
   {
    	public BladDialog(JFrame owner)
      {
      	super(owner, "Blad", true);

	      JTextArea blad = new JTextArea();

	      blad.setText("WPISZ LICZBĘ POPRAWNIE!");
	      blad.setEditable(false);
	      blad.setBackground(new Color(102, 153, 255));
	      blad.setFont(new Font("Trebuchet MS", 1, 16));

         JButton ok = new JButton("Ok");
         ok.addActionListener(new ActionListener()
         {
         	public void actionPerformed(ActionEvent event)
            {
            	setVisible(false);
            }
         });

         JPanel panelB = new JPanel();
         JPanel panelB1 = new JPanel();
         
         panelB1.add(blad, BorderLayout.CENTER);
         add(panelB1, BorderLayout.CENTER);
         panelB1.setBackground(new Color(102, 153, 255));
         
         panelB.add(ok, BorderLayout.SOUTH);
         add(panelB, BorderLayout.SOUTH);
         panelB.setBackground(new Color(102, 153, 255));

         setSize(250,120);
      }
   }
   
   private void initComponents() 
   {
        jPanel1 = new JPanel();
        jComboBox1 = new JComboBox();
        jComboBox2 = new JComboBox();    
        jLabel1 = new JLabel();
        jLabel2 = new JLabel();
        jLabel4 = new JLabel();
        jLabel3 = new JLabel();
        jButton1 = new JButton();
        jButton2 = new JButton();
        jButton3 = new JButton();
        jButton4 = new JButton();
        jMenuBar1 = new JMenuBar();
        jMenu1 = new JMenu();
        jMenu2 = new JMenu();
        jMenuItem1 = new JMenuItem();
        jMenuItem2 = new JMenuItem();    
        jMenuItem3 = new JMenuItem();
        jMenuItem4 = new JMenuItem();
        jTextField1 = new JTextField();

        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        jPanel1.setBackground(new Color(102, 153, 255));

        jButton1.setBackground(new Color(153, 204, 255));
        jButton1.setLabel("PRZELICZ");
        
        jButton1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                przeliczanie(event);
            }
        });

        jComboBox1.setBackground(new Color(153, 204, 255));
        jComboBox1.setModel(new DefaultComboBoxModel(new String[] { "cm", "m", "km", "in", "fd", "yd" }));

        jComboBox2.setBackground(new Color(153, 204, 255));
        jComboBox2.setModel(new DefaultComboBoxModel(new String[] { "cm", "m", "km", "in", "fd", "yd" }));

        jLabel4.setFont(new Font("Trebuchet MS", 1, 16));

        jLabel3.setFont(new Font("Trebuchet MS", 1, 16));
        jLabel3.setText("WYNIK = ");

        jLabel1.setFont(new Font("Trebuchet MS", 1, 16));
        jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
        jLabel1.setText("ZAMIEŃ");

        jLabel2.setFont(new Font("Trebuchet MS", 1, 16));
        jLabel2.setText("NA");

        jButton2.setBackground(new Color(153, 204, 255));
        jButton2.setActionCommand("WYCZYŚĆ");
        jButton2.setLabel("WYCZYŚĆ");
        jButton2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                czyszczenie(event);
            }
        });
        
 
		  //if (pass == "admin")
		  //{
		  //		jButton3.setVisible(true);
		  //}
		  //else if
		  //{
		  //		jButton3.setVisible(false);
		  //}
		  
        jButton3.setBackground(new Color(153, 204, 255));
        jButton3.setLabel("DODAJ");
        jButton3.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                dodawanie(event);
            }
        });
        
        jButton4.setBackground(new Color(153, 204, 255));
        jButton4.setLabel("USUŃ");
        jButton4.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                usuwanie(event);
            }
        });

		  javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(18, 18, 18)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(18, 18, 18)
                        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 65, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(38, 38, 38)
                        .addComponent(jLabel2)
                        .addGap(40, 40, 40)
                        .addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jButton1)
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addGap(1, 1, 1)
                                .addComponent(jLabel3)))
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jButton2)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addGap(5, 5, 5)
                                .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 181, javax.swing.GroupLayout.PREFERRED_SIZE)))))
                .addContainerGap(39, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                .addGap(44, 44, 44)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel2)
                    .addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 29, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(37, 37, 37)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 19, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel3))
                .addGap(84, 84, 84)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jButton1)
                    .addComponent(jButton2)
                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jButton3)
                        .addComponent(jButton4)))
                .addGap(34, 34, 34))
        );

        jMenu1.setLabel("Opcje");

        jMenuItem1.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_L, java.awt.event.InputEvent.CTRL_MASK));
        jMenuItem1.setLabel("Zaloguj");
        jMenu1.add(jMenuItem1);

        jMenuItem2.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_Z, java.awt.event.InputEvent.CTRL_MASK));
        jMenuItem2.setLabel("Zamknij");
        jMenu1.add(jMenuItem2);

        jMenuBar1.add(jMenu1);

        jMenu2.setLabel("Pomoc");

        jMenuItem3.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_P, java.awt.event.InputEvent.ALT_MASK));
        jMenuItem3.setLabel("Pomoc");
        jMenu2.add(jMenuItem3);

        jMenuItem4.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_A, java.awt.event.InputEvent.ALT_MASK));
        jMenuItem4.setLabel("Autorzy");
        jMenu2.add(jMenuItem4);

        jMenuBar1.add(jMenu2);

        setJMenuBar(jMenuBar1);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, 270, Short.MAX_VALUE)
        );

        pack();
   }
   
   private void przeliczanie(ActionEvent event) 
   {
	   try
	   {                              
         double wynik=0.0;
        	String spole=jTextField1.getText().trim();
	      double fpole=Double.parseDouble(spole);
	      int intComboBox1=jComboBox1.getSelectedIndex();
	      int intComboBox2=jComboBox2.getSelectedIndex();
	
	      if((intComboBox1==0 && intComboBox2==0)||(intComboBox1==1 && intComboBox2==1)||
         (intComboBox1==2 && intComboBox2==2)||(intComboBox1==3 && intComboBox2==3)||
         (intComboBox1==4 && intComboBox2==4)||(intComboBox1==5 && intComboBox2==5)||
         (intComboBox1==6 && intComboBox2==6)){wynik=fpole;
         }
         
         //cm
         else if(intComboBox1==0 && intComboBox2==1){wynik=fpole/100;}
         else if(intComboBox1==0 && intComboBox2==2){wynik=fpole/100000;}
         else if(intComboBox1==0 && intComboBox2==3){wynik=fpole/2.54;}
         else if(intComboBox1==0 && intComboBox2==4){wynik=fpole/30.48;}
         else if(intComboBox1==0 && intComboBox2==5){wynik=fpole/91.44;//}
         //else if(intComboBox1==0 && intComboBox2==6){wynik=fpole/160934.4;
         }
         //m
         else if(intComboBox1==1 && intComboBox2==0){wynik=fpole*100;}
         else if(intComboBox1==1 && intComboBox2==2){wynik=fpole/1000;}
         else if(intComboBox1==1 && intComboBox2==3){wynik=fpole*39.3700787;}
         else if(intComboBox1==1 && intComboBox2==4){wynik=fpole*3.2808399;}
         else if(intComboBox1==1 && intComboBox2==5){wynik=fpole*1.0936133;//}
         //else if(intComboBox1==1 && intComboBox2==6){wynik=fpole/1609.344;
         }
         //km
         else if(intComboBox1==2 && intComboBox2==0){wynik=fpole*100000;}
         else if(intComboBox1==2 && intComboBox2==1){wynik=fpole*1000;}
         else if(intComboBox1==2 && intComboBox2==3){wynik=fpole*39370.0787;}
         else if(intComboBox1==2 && intComboBox2==4){wynik=fpole*3280.8399;}
         else if(intComboBox1==2 && intComboBox2==5){wynik=fpole*1093.6133;//}
         //else if(intComboBox1==2 && intComboBox2==6){wynik=fpole/1.609344;
         }
         //cal
         else if(intComboBox1==3 && intComboBox2==0){wynik=fpole*2.54;}
         else if(intComboBox1==3 && intComboBox2==1){wynik=fpole*0.0254;}
         else if(intComboBox1==3 && intComboBox2==2){wynik=fpole*0.0000254;}
         else if(intComboBox1==3 && intComboBox2==4){wynik=fpole*0.0833333333;}
         else if(intComboBox1==3 && intComboBox2==5){wynik=fpole*0.0277777778;//}
         //else if(intComboBox1==3 && intComboBox2==6){wynik=fpole/63360;
         }
         //stopa
         else if(intComboBox1==4 && intComboBox2==0){wynik=fpole*30.48;}
         else if(intComboBox1==4 && intComboBox2==1){wynik=fpole*0.3048;}
         else if(intComboBox1==4 && intComboBox2==2){wynik=fpole*0.0003048;}
         else if(intComboBox1==4 && intComboBox2==3){wynik=fpole*12;}
         else if(intComboBox1==4 && intComboBox2==5){wynik=fpole*0.333333333;//}
         //else if(intComboBox1==4 && intComboBox2==6){wynik=fpole/5280;
         }
         //jard
         else if(intComboBox1==5 && intComboBox2==0){wynik=fpole*91.44;}
         else if(intComboBox1==5 && intComboBox2==1){wynik=fpole*0.9144;}
         else if(intComboBox1==5 && intComboBox2==2){wynik=fpole*0.0009144;}
         else if(intComboBox1==5 && intComboBox2==3){wynik=fpole*36;}
         else if(intComboBox1==5 && intComboBox2==4){wynik=fpole*3;//}
         //else if(intComboBox1==5 && intComboBox2==6){wynik=fpole/1760;
         }
         NumberFormat nf=NumberFormat.getNumberInstance();
        	nf.setMaximumFractionDigits(9);
        	String swynik=nf.format(wynik);
        	jLabel4.setText(swynik+" "+jComboBox2.getSelectedItem());
      }
      catch (NumberFormatException e)
      {
      	if (dialog4 == null)
		   dialog4 = new BladDialog(KonwerterFrame.this);
		   dialog4.setVisible(true);	
		   jTextField1.setText("");
      }
   }
	
	private void czyszczenie(ActionEvent event) {                             
         jLabel4.setText("");
         jTextField1.setText("");
   }
   
   private void dodawanie(ActionEvent event) {                             
         jLabel4.setText("");
         jTextField1.setText("");
   }
   
   private void usuwanie(ActionEvent event) {                             
         jLabel4.setText("");
         jTextField1.setText("");
   }
  
   private JButton jButton1;
   private JButton jButton2;
   private JButton jButton3;
   private JButton jButton4;
   private JComboBox jComboBox1;
   private JComboBox jComboBox2;
   private JLabel jLabel1;
   private JLabel jLabel2;
   private JLabel jLabel3;
   private JLabel jLabel4;
   private JMenu jMenu1;
   private JMenu jMenu2;
   private JMenuBar jMenuBar1;
   private JMenuItem jMenuItem1;
   private JMenuItem jMenuItem2;
   private JMenuItem jMenuItem3;
   private JMenuItem jMenuItem4;
   private JPanel jPanel1;
   private JTextField jTextField1;
}
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class PasswordChooser extends JPanel
{
	public PasswordChooser()
	{
		setLayout(new BorderLayout());

		// tworzenie panelu z nazwami użytkownika i hasła

		JPanel panel = new JPanel();
		panel.setLayout(new GridLayout(2,2));
		panel.add(new JLabel("Nazwa użytkownika:"));
		panel.add(username = new JTextField(""));
		panel.add(new JLabel("Hasło:"));
		panel.add(password = new JPasswordField(""));
		add(panel, BorderLayout.CENTER);

		// tworzenie przyciskow OK i Anuluj, ktore zamykaja okno dialogowe

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

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

		// dodoawanie przyciskow w poblizu poludniowej krawedzi

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

	// ustawia wartosci domyslne okna dialogowego

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

	// pobieran dane podane w oknie dialogowym

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

	// wyświetla panel z elementami przyjmujacymi dane od uzytkownika w oknie dialogowym

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

		// lokalizacja ramki nadrzędnej

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

		// jeśli jest to pierwszy raz lub zmienił się użytkownik, utworzenie nowego okna dialogowego

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

		// ustawienie tytułu i wyświetlanie okna dialogowego

		dialog.setTitle(title);
		dialog.setVisible(true);
		return ok;

	}

	private JTextField username;
	private JPasswordField password;
	private JButton okButton;
	private boolean ok;
	private JDialog dialog;
}
public 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;
}
0

Zmodernizowałem ten program. Teraz ukrywa te dwa przyciski. Ale co mam zrobić żeby po wpisaniu w okienku logowania hasła "admin" i zatwierdzeniu program na nowo wyświetlił te dwa przyciski?

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.text.NumberFormat;
import java.util.*;

public class Konwerter
{
     public static void main(String args[]) {
        java.awt.EventQueue.invokeLater(new Runnable() {
            public void run() {
                new KonwerterFrame().setVisible(true);
            }
        });
    }
}

class KonwerterFrame extends JFrame
{
	String loginP;
	String hasloP;
	
	public KonwerterFrame()
   {
      initComponents();
      setTitle("Konwerter Jednostek");

		Toolkit kit = Toolkit.getDefaultToolkit();
		Dimension screenSize = kit.getScreenSize();
		int screenWidth = screenSize.width;
		int screenHeight = screenSize.height;
		setSize((screenWidth/3)-22, (screenHeight/2)-50);
		setLocationRelativeTo(null);  //okienko programu na środku ekranu

      // Opcja Zamknij
      jMenuItem2.addActionListener(new ActionListener()
		{
      	public void actionPerformed(ActionEvent event)
         {
         	System.exit(0);
         }
		});

      // Opcja Zaloguj
      jMenuItem1.addActionListener(new ConnectAction());

      // Pomoc
      jMenuItem3.addActionListener(new ActionListener()
      {
      	public void actionPerformed(ActionEvent event)
         {
         	if (dialog2 == null)
            dialog2 = new PomocDialog(KonwerterFrame.this);
            dialog2.setLocationRelativeTo(null);  //okienko bledu na środku ekranu
            dialog2.setVisible(true);
            
         }
      });
      
      // Autorzy
      jMenuItem4.addActionListener(new ActionListener()
      {
	      public void actionPerformed(ActionEvent event)
	      {
		      if (dialog3 == null)
		      dialog3 = new AutorzyDialog(KonwerterFrame.this);
		      dialog3.setLocationRelativeTo(null);  //okienko autorow na środku ekranu
		      dialog3.setVisible(true);
		   }
		});
   }

   private PasswordChooser dialog = null;
   private PomocDialog dialog2;
   private AutorzyDialog dialog3;
   private BladDialog dialog4;

   /*private*/class ConnectAction implements ActionListener
   {
    	public void actionPerformed(ActionEvent event)
		{
      	// jeśli to 1. raz tworzy okno dialogowe
         if (dialog == null) dialog = new PasswordChooser();
		
         // ustawienie wartosci domyslnych
         dialog.setUser(new User("admin", null));
		
	    	// wyswietlenie okna dialogowego
	   	if (dialog.showDialog(KonwerterFrame.this, "Zaloguj"))
         {
         	// pobranie danych uzytkownika w przypaku zatwierdzenia
				User u = dialog.getUser();
				String login = u.getName(); 
				String haslo = new String(u.getPassword());
				
				loginP = login;
				hasloP = haslo;
         }
		}
   }
    
	class PomocDialog extends JDialog
   {
    	public PomocDialog(JFrame owner)
      {
      	super(owner, "Pomoc", true);
			
         JButton ok = new JButton("Ok");
         ok.addActionListener(new ActionListener()
         {
         	public void actionPerformed(ActionEvent event)
            {
            	setVisible(false);
            }
         });

         JPanel panelPomoc = new JPanel();
         JPanel panelPomoc2 = new JPanel();
         panelPomoc.add(ok, BorderLayout.SOUTH);
         add(panelPomoc, BorderLayout.SOUTH);
         add(panelPomoc2);
         panelPomoc.setBackground(new Color(102, 153, 255));
         panelPomoc2.setBackground(new Color(102, 153, 255));
			
         setSize(250,150);
      }
   }
   
   class AutorzyDialog extends JDialog
   {
    	public AutorzyDialog(JFrame owner)
      {
      	super(owner, "Autorzy", true);

	      JTextArea autorzy = new JTextArea();
	      JTextArea autorzy1 = new JTextArea();

	      autorzy1.setText("AUTORZY");
	      autorzy1.setEditable(false);
	      autorzy1.setBackground(new Color(102, 153, 255));
	      autorzy1.setFont(new Font("Trebuchet MS", 1, 16));
	      
	      autorzy.setText("Konrad Jasionowicz \nTomasz Karwat");
	      autorzy.setEditable(false);
	      autorzy.setBackground(new Color(102, 153, 255));
	      autorzy.setFont(new Font("Trebuchet MS", 1, 16));

         JButton ok = new JButton("Ok");
         ok.addActionListener(new ActionListener()
         {
         	public void actionPerformed(ActionEvent event)
            {
            	setVisible(false);
            }
         });

         JPanel panelA = new JPanel();
         JPanel panelA1 = new JPanel();
         
         panelA1.add(autorzy1, BorderLayout.CENTER);
         panelA1.add(autorzy, BorderLayout.CENTER);
         add(panelA1, BorderLayout.CENTER);
         panelA1.setBackground(new Color(102, 153, 255));
         
         panelA.add(ok, BorderLayout.SOUTH);
         add(panelA, BorderLayout.SOUTH);
         panelA.setBackground(new Color(102, 153, 255));

         setSize(250,150);
      }
   }
   
   class BladDialog extends JDialog
   {
    	public BladDialog(JFrame owner)
      {
      	super(owner, "Blad", true);

	      JTextArea blad = new JTextArea();

	      blad.setText("WPISZ LICZBĘ POPRAWNIE!");
	      blad.setEditable(false);
	      blad.setBackground(new Color(102, 153, 255));
	      blad.setFont(new Font("Trebuchet MS", 1, 16));

         JButton ok = new JButton("Ok");
         ok.addActionListener(new ActionListener()
         {
         	public void actionPerformed(ActionEvent event)
            {
            	setVisible(false);
            }
         });

         JPanel panelB = new JPanel();
         JPanel panelB1 = new JPanel();
         
         panelB1.add(blad, BorderLayout.CENTER);
         add(panelB1, BorderLayout.CENTER);
         panelB1.setBackground(new Color(102, 153, 255));
         
         panelB.add(ok, BorderLayout.SOUTH);
         add(panelB, BorderLayout.SOUTH);
         panelB.setBackground(new Color(102, 153, 255));

         setSize(250,120);
      }
   }
   
   private void initComponents() 
   {
        jPanel1 = new JPanel();
        jComboBox1 = new JComboBox();
        jComboBox2 = new JComboBox();    
        jLabel1 = new JLabel();
        jLabel2 = new JLabel();
        jLabel4 = new JLabel();
        jLabel3 = new JLabel();
        jButton1 = new JButton();
        jButton2 = new JButton();
        jButton3 = new JButton();
        jButton4 = new JButton();
        jMenuBar1 = new JMenuBar();
        jMenu1 = new JMenu();
        jMenu2 = new JMenu();
        jMenuItem1 = new JMenuItem();
        jMenuItem2 = new JMenuItem();    
        jMenuItem3 = new JMenuItem();
        jMenuItem4 = new JMenuItem();
        jTextField1 = new JTextField();

        setDefaultCloseOperation(WindowConstants.EXIT_ON_CLOSE);

        jPanel1.setBackground(new Color(102, 153, 255));

        jButton1.setBackground(new Color(153, 204, 255));
        jButton1.setLabel("PRZELICZ");
        
        jButton1.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                przeliczanie(event);
            }
        });

        jComboBox1.setBackground(new Color(153, 204, 255));
        jComboBox1.setModel(new DefaultComboBoxModel(new String[] { "cm", "m", "km", "in", "fd", "yd" }));

        jComboBox2.setBackground(new Color(153, 204, 255));
        jComboBox2.setModel(new DefaultComboBoxModel(new String[] { "cm", "m", "km", "in", "fd", "yd" }));

        jLabel4.setFont(new Font("Trebuchet MS", 1, 16));

        jLabel3.setFont(new Font("Trebuchet MS", 1, 16));
        jLabel3.setText("WYNIK = ");

        jLabel1.setFont(new Font("Trebuchet MS", 1, 16));
        jLabel1.setHorizontalAlignment(SwingConstants.CENTER);
        jLabel1.setText("ZAMIEŃ");

        jLabel2.setFont(new Font("Trebuchet MS", 1, 16));
        jLabel2.setText("NA");

        jButton2.setBackground(new Color(153, 204, 255));
        jButton2.setActionCommand("WYCZYŚĆ");
        jButton2.setLabel("WYCZYŚĆ");
        jButton2.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                czyszczenie(event);
            }
        });

		  if (hasloP == "admin")
		  {
		  		jButton3.setVisible(true);
		  }
		  else
		  {
		  		jButton3.setVisible(false);
		  }
		  
        jButton3.setBackground(new Color(153, 204, 255));
        jButton3.setLabel("DODAJ");
        jButton3.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                dodawanie(event);
            }
        });
        
        if (hasloP == "admin")
		  {
		  		jButton4.setVisible(true);
		  }
		  else
		  {
		  		jButton4.setVisible(false);
		  }
        
        jButton4.setBackground(new Color(153, 204, 255));
        jButton4.setLabel("USUŃ");
        jButton4.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent event) {
                usuwanie(event);
            }
        });

		  javax.swing.GroupLayout jPanel1Layout = new javax.swing.GroupLayout(jPanel1);
        jPanel1.setLayout(jPanel1Layout);
        jPanel1Layout.setHorizontalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(jPanel1Layout.createSequentialGroup()
                .addGap(18, 18, 18)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 63, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(18, 18, 18)
                        .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 65, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                        .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                        .addGap(38, 38, 38)
                        .addComponent(jLabel2)
                        .addGap(40, 40, 40)
                        .addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
                    .addGroup(jPanel1Layout.createSequentialGroup()
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addComponent(jButton1)
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addGap(1, 1, 1)
                                .addComponent(jLabel3)))
                        .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jButton2)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jButton3, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE)
                                .addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
                                .addComponent(jButton4, javax.swing.GroupLayout.PREFERRED_SIZE, 80, javax.swing.GroupLayout.PREFERRED_SIZE))
                            .addGroup(jPanel1Layout.createSequentialGroup()
                                .addGap(5, 5, 5)
                                .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 181, javax.swing.GroupLayout.PREFERRED_SIZE)))))
                .addContainerGap(39, Short.MAX_VALUE))
        );
        jPanel1Layout.setVerticalGroup(
            jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addGroup(javax.swing.GroupLayout.Alignment.TRAILING, jPanel1Layout.createSequentialGroup()
                .addGap(44, 44, 44)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                    .addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jComboBox1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel2)
                    .addComponent(jComboBox2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 29, javax.swing.GroupLayout.PREFERRED_SIZE))
                .addGap(37, 37, 37)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jLabel4, javax.swing.GroupLayout.PREFERRED_SIZE, 19, javax.swing.GroupLayout.PREFERRED_SIZE)
                    .addComponent(jLabel3))
                .addGap(84, 84, 84)
                .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
                    .addComponent(jButton1)
                    .addComponent(jButton2)
                    .addGroup(jPanel1Layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
                        .addComponent(jButton3)
                        .addComponent(jButton4)))
                .addGap(34, 34, 34))
        );

        jMenu1.setLabel("Opcje");

        jMenuItem1.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_L, java.awt.event.InputEvent.CTRL_MASK));
        jMenuItem1.setLabel("Zaloguj");
        jMenu1.add(jMenuItem1);

        jMenuItem2.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_Z, java.awt.event.InputEvent.CTRL_MASK));
        jMenuItem2.setLabel("Zamknij");
        jMenu1.add(jMenuItem2);

        jMenuBar1.add(jMenu1);

        jMenu2.setLabel("Pomoc");

        jMenuItem3.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_P, java.awt.event.InputEvent.ALT_MASK));
        jMenuItem3.setLabel("Pomoc");
        jMenu2.add(jMenuItem3);

        jMenuItem4.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_A, java.awt.event.InputEvent.ALT_MASK));
        jMenuItem4.setLabel("Autorzy");
        jMenu2.add(jMenuItem4);

        jMenuBar1.add(jMenu2);

        setJMenuBar(jMenuBar1);

        javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
        getContentPane().setLayout(layout);
        layout.setHorizontalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
        );
        layout.setVerticalGroup(
            layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
            .addComponent(jPanel1, javax.swing.GroupLayout.DEFAULT_SIZE, 270, Short.MAX_VALUE)
        );

        pack();
   }
   
   private void przeliczanie(ActionEvent event) 
   {
	   try
	   {                              
         double wynik=0.0;
        	String spole=jTextField1.getText().trim();
	      double fpole=Double.parseDouble(spole);
	      int intComboBox1=jComboBox1.getSelectedIndex();
	      int intComboBox2=jComboBox2.getSelectedIndex();
	
	      if((intComboBox1==0 && intComboBox2==0)||(intComboBox1==1 && intComboBox2==1)||
         (intComboBox1==2 && intComboBox2==2)||(intComboBox1==3 && intComboBox2==3)||
         (intComboBox1==4 && intComboBox2==4)||(intComboBox1==5 && intComboBox2==5)||
         (intComboBox1==6 && intComboBox2==6)){wynik=fpole;
         }
         
         //cm
         else if(intComboBox1==0 && intComboBox2==1){wynik=fpole/100;}
         else if(intComboBox1==0 && intComboBox2==2){wynik=fpole/100000;}
         else if(intComboBox1==0 && intComboBox2==3){wynik=fpole/2.54;}
         else if(intComboBox1==0 && intComboBox2==4){wynik=fpole/30.48;}
         else if(intComboBox1==0 && intComboBox2==5){wynik=fpole/91.44;//}
         //else if(intComboBox1==0 && intComboBox2==6){wynik=fpole/160934.4;
         }
         //m
         else if(intComboBox1==1 && intComboBox2==0){wynik=fpole*100;}
         else if(intComboBox1==1 && intComboBox2==2){wynik=fpole/1000;}
         else if(intComboBox1==1 && intComboBox2==3){wynik=fpole*39.3700787;}
         else if(intComboBox1==1 && intComboBox2==4){wynik=fpole*3.2808399;}
         else if(intComboBox1==1 && intComboBox2==5){wynik=fpole*1.0936133;//}
         //else if(intComboBox1==1 && intComboBox2==6){wynik=fpole/1609.344;
         }
         //km
         else if(intComboBox1==2 && intComboBox2==0){wynik=fpole*100000;}
         else if(intComboBox1==2 && intComboBox2==1){wynik=fpole*1000;}
         else if(intComboBox1==2 && intComboBox2==3){wynik=fpole*39370.0787;}
         else if(intComboBox1==2 && intComboBox2==4){wynik=fpole*3280.8399;}
         else if(intComboBox1==2 && intComboBox2==5){wynik=fpole*1093.6133;//}
         //else if(intComboBox1==2 && intComboBox2==6){wynik=fpole/1.609344;
         }
         //cal
         else if(intComboBox1==3 && intComboBox2==0){wynik=fpole*2.54;}
         else if(intComboBox1==3 && intComboBox2==1){wynik=fpole*0.0254;}
         else if(intComboBox1==3 && intComboBox2==2){wynik=fpole*0.0000254;}
         else if(intComboBox1==3 && intComboBox2==4){wynik=fpole*0.0833333333;}
         else if(intComboBox1==3 && intComboBox2==5){wynik=fpole*0.0277777778;//}
         //else if(intComboBox1==3 && intComboBox2==6){wynik=fpole/63360;
         }
         //stopa
         else if(intComboBox1==4 && intComboBox2==0){wynik=fpole*30.48;}
         else if(intComboBox1==4 && intComboBox2==1){wynik=fpole*0.3048;}
         else if(intComboBox1==4 && intComboBox2==2){wynik=fpole*0.0003048;}
         else if(intComboBox1==4 && intComboBox2==3){wynik=fpole*12;}
         else if(intComboBox1==4 && intComboBox2==5){wynik=fpole*0.333333333;//}
         //else if(intComboBox1==4 && intComboBox2==6){wynik=fpole/5280;
         }
         //jard
         else if(intComboBox1==5 && intComboBox2==0){wynik=fpole*91.44;}
         else if(intComboBox1==5 && intComboBox2==1){wynik=fpole*0.9144;}
         else if(intComboBox1==5 && intComboBox2==2){wynik=fpole*0.0009144;}
         else if(intComboBox1==5 && intComboBox2==3){wynik=fpole*36;}
         else if(intComboBox1==5 && intComboBox2==4){wynik=fpole*3;//}
         //else if(intComboBox1==5 && intComboBox2==6){wynik=fpole/1760;
         }
         NumberFormat nf=NumberFormat.getNumberInstance();
        	nf.setMaximumFractionDigits(9);
        	String swynik=nf.format(wynik);
        	jLabel4.setText(swynik+" "+jComboBox2.getSelectedItem());
      }
      catch (NumberFormatException e)
      {
      	if (dialog4 == null)
		   dialog4 = new BladDialog(KonwerterFrame.this);
		   dialog4.setLocationRelativeTo(null);  //okienko bledu na środku ekranu
		   dialog4.setVisible(true);	
		   jTextField1.setText("");
      }
   }
	
	private void czyszczenie(ActionEvent event) {                             
         jLabel4.setText("");
         jTextField1.setText("");
   }
   
   private void dodawanie(ActionEvent event) {                             
         jLabel4.setText("");
         jTextField1.setText("");
   }
   
   private void usuwanie(ActionEvent event) {                             
         jLabel4.setText("");
         jTextField1.setText("");
   }
  
   private JButton jButton1;
   private JButton jButton2;
   private JButton jButton3;
   private JButton jButton4;
   private JComboBox jComboBox1;
   private JComboBox jComboBox2;
   private JLabel jLabel1;
   private JLabel jLabel2;
   private JLabel jLabel3;
   private JLabel jLabel4;
   private JMenu jMenu1;
   private JMenu jMenu2;
   private JMenuBar jMenuBar1;
   private JMenuItem jMenuItem1;
   private JMenuItem jMenuItem2;
   private JMenuItem jMenuItem3;
   private JMenuItem jMenuItem4;
   private JPanel jPanel1;
   private JTextField jTextField1;
}
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;

class PasswordChooser extends JPanel
{
	public PasswordChooser()
	{
		setLayout(new BorderLayout());

		// tworzenie panelu z nazwami użytkownika i hasła

		JPanel panel = new JPanel();
		panel.setLayout(new GridLayout(2,2));
		panel.add(new JLabel("Login:                       "));
		panel.add(username = new JTextField(""));
		panel.add(new JLabel("Hasło:"));
		panel.add(password = new JPasswordField(""));
		add(panel, BorderLayout.CENTER);

		// tworzenie przyciskow OK i Anuluj, ktore zamykaja okno dialogowe

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

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

		// dodoawanie przyciskow w poblizu poludniowej krawedzi

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

	// ustawia wartosci domyslne okna dialogowego

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

	// pobieran dane podane w oknie dialogowym

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

	// wyświetla panel z elementami przyjmujacymi dane od uzytkownika w oknie dialogowym

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

		// lokalizacja ramki nadrzędnej

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

		// jeśli jest to pierwszy raz lub zmienił się użytkownik, utworzenie nowego okna dialogowego

		if (dialog == null || dialog.getOwner() != owner)
		{
			dialog = new JDialog(owner, true);
			dialog.add(this);
			dialog.getRootPane().setDefaultButton(okButton);
			dialog.setLocationRelativeTo(null);  //wyświetla okienko na środku ekranu
			dialog.pack();
		}

		// ustawienie tytułu i wyświetlanie okna dialogowego

		dialog.setTitle(title);
		dialog.setVisible(true);
		return ok;

	}

	private JTextField username;
	private JPasswordField password;
	private JButton okButton;
	private boolean ok;
	private JDialog dialog;
}
public 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;
}
0

Mozesz albo od razu wszystko pokazac uzytkownikowi i wylaczyc przyciski za pomoca JButton.setEnabled(false); lub po kliknieciu dodac je do panelu i odrysowac panel.

0

W którym miejscu ma być instrukcja if i ponowne odrysowywanie panelu? Próbowałem tak new KonwerterFrame().setVisible(true); ale to mi robi nowe okienko całe. Zresztą i tak nie uwzględnia to wprowadzonej zmiennej podczas logowania.

0

Przyklad jak powinno byc zrobione: http://www.wrzucacz.pl/file/3571264526152

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