public class AboutDialog extends JDialog implements ActionListener {

    public AboutDialog(Frame parent, String title, boolean modal) {
        super(parent, title, modal);
        setSize(500, 400);
        setLocationRelativeTo(parent);
        setLayout(new BorderLayout());

        JPanel panBot = new JPanel(new FlowLayout(FlowLayout.RIGHT));
        JButton btnOk = new JButton("OK");
        btnOk.addActionListener(this);
        getRootPane().setDefaultButton(btnOk);
        panBot.setBackground(Color.WHITE);
        panBot.add(btnOk);
        add(panBot, BorderLayout.SOUTH);

         JPanel panTop = new JPanel();
         panTop.setPreferredSize(new Dimension(100,30));
         panTop.setBackground(Color.WHITE);
         panTop.add(new JLabel(Config.getTitle() + " - O Autoru"));
         add(panTop,BorderLayout.NORTH);

         JPanel panLeft=new JPanel(new BorderLayout());
         panLeft.setPreferredSize(new Dimension(180,200));
         ImagePanel imgAutor = new ImagePanel(new ImageIcon("img/autor2.jpg").getImage());
         panLeft.add(imgAutor);
         add(panLeft,BorderLayout.WEST);

         JPanel panCenter = new JPanel(new BorderLayout());
         JSeparator sep = new JSeparator();
         sep.setOrientation(SwingConstants.VERTICAL);
         panCenter.setPreferredSize(new Dimension(10,400));
         panCenter.add(sep);
         add(panCenter,BorderLayout.CENTER);

         Dimension lblDimension = new Dimension(200,20);

         Box boxRight = new Box(BoxLayout.Y_AXIS);
         boxRight.setPreferredSize(new Dimension(300,400));

         JPanel panDetails1 = new JPanel();
        // panDetails1.add(Box.createGlue());
        // panDetails1.add(boxRight.createVerticalStrut(100));
         JLabel lblImePrz = new JLabel();
         lblImePrz.setPreferredSize(lblDimension);
         lblImePrz.setText("Ime i Prezime: Goran Todorovic");
         panDetails1.add(lblImePrz);

         JLabel lblBrInd = new JLabel();
         lblBrInd.setPreferredSize(lblDimension);
         lblBrInd.setText("Broj Indeksa: RA 170/2011");
         panDetails1.add(lblBrInd);

         JLabel lblEmail = new JLabel();
         lblEmail.setPreferredSize(lblDimension);
         lblEmail.setText("E-mail: <[email protected]>");
         panDetails1.add(lblEmail);

         JLabel lblHobi = new JLabel();
         lblHobi.setPreferredSize(lblDimension);
         lblHobi.setText("Hobi: Sakupljanje salveta.");
         panDetails1.add(lblHobi);

         JSeparator sep1 = new JSeparator();
         sep1.setOrientation(SwingConstants.HORIZONTAL);
         sep1.setPreferredSize(new Dimension(300,5));
         panDetails1.add(sep1);

         JLabel lblVerzija = new JLabel();
         lblVerzija.setPreferredSize(new Dimension(280, 20));
         lblVerzija.setText("Copyright \u00a9 2013 Goran Todorovic :: verzija: 0.1b");
         panDetails1.add(lblVerzija);

         boxRight.add(panDetails1);
         add(boxRight, BorderLayout.EAST);

    }

    public void actionPerformed(ActionEvent e) {
        if (e.getActionCommand().equals("OK"))
            setVisible(false);
    }
}

@SuppressWarnings("serial")
class ImagePanel extends JPanel {

      private Image img;

      public ImagePanel(String img) {
        this(new ImageIcon(img).getImage());
      }

      public ImagePanel(Image img) {
        this.img = img;
      }

      public void paintComponent(Graphics g) {
        g.drawImage(img, (int)(this.getSize().getWidth()-img.getWidth(null))/2,
                         (int)(this.getSize().getHeight()-img.getHeight(null))/2, null);
      }
}