Java JFileChooser .createDialog (Component parent)

protected JDialog createDialog(Component parent)   throws HeadlessException

/*from   ww  w .j a  v  a 2 s .  c o  m*/
import java.awt.Component;
import java.awt.HeadlessException;
import java.awt.event.ActionEvent;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;

import javax.swing.AbstractAction;
import javax.swing.JDialog;
import javax.swing.JFileChooser;

public class Main {
  public static void main(String[] argv) throws Exception {
    
    MyFileChooser chooser = new MyFileChooser();
    chooser.setDialogType(JFileChooser.SAVE_DIALOG);
    final JDialog dialog = chooser.createDialog(null);
    chooser.addActionListener(new AbstractAction() {
      public void actionPerformed(ActionEvent evt) {
        JFileChooser chooser = (JFileChooser) evt.getSource();
        if (JFileChooser.APPROVE_SELECTION.equals(evt.getActionCommand())) {
          dialog.setVisible(false);
        } else if (JFileChooser.CANCEL_SELECTION.equals(evt.getActionCommand())) {
          dialog.setVisible(false);
        }
      }
    });

    dialog.addWindowListener(new WindowAdapter() {
      public void windowClosing(WindowEvent e) {
        dialog.setVisible(false);
      }
    });

    dialog.setVisible(true);
  }
}

class MyFileChooser extends JFileChooser {
  public JDialog createDialog(Component parent) throws HeadlessException {
    return super.createDialog(parent);
  }
}