import java.awt.Dimension;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.awt.event.ComponentEvent;
import java.awt.event.ComponentListener;

import javax.swing.JButton;
import javax.swing.JDialog;
import javax.swing.JFrame;
import javax.swing.JLabel;

@SuppressWarnings("serial")
public class Test extends JFrame implements ActionListener, ComponentListener {

   private JButton button;
   private JDialog dialog;

   public Test() {
      this.dialog = new JDialog();
      this.dialog.setDefaultCloseOperation(JDialog.HIDE_ON_CLOSE);
      this.dialog.setContentPane(new JLabel("My Dialog Conent Pane"));
      this.dialog.pack();
      this.dialog.addComponentListener(this);

      this.button = new JButton("Click");
      this.button.addActionListener(this);

      this.setContentPane(this.button);
      this.setPreferredSize(new Dimension(200, 200));
      this.setTitle("My Frame");
      this.pack();
      this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      this.setVisible(true);
   }

   public static void main(String[] args) {
      new Test();
   }

   @Override
   public void actionPerformed(ActionEvent arg0) {
      if (arg0.getSource() == this.button) {
         this.setEnabled(false);
         this.dialog.setVisible(true);
      }
   }

   @Override
   public void componentHidden(ComponentEvent arg0) {
      if (arg0.getSource() == this.dialog) {
         this.setEnabled(true);
      }
   }

   @Override
   public void componentMoved(ComponentEvent arg0) {
   }

   @Override
   public void componentResized(ComponentEvent arg0) {
   }

   @Override
   public void componentShown(ComponentEvent arg0) {
   }
}