FWD » Core Development » User Interface

import javax.swing.*;

import java.awt.event.*;

import java.awt.*;

public class ParentChildFrames

{

   public static void main(String[] args)

   {

      SwingUtilities.invokeLater(new Runnable()

      {

         public void run()

         {

            JFrame parentFrame = new JFrame("Parent");

            parentFrame.setSize(250, 250);

            parentFrame.setLocation(150, 150);

            // parentFrame.setUndecorated(true);

            final JWindow childFrame = new JWindow(parentFrame);

            childFrame.setSize(250, 250);

            childFrame.setLocation(550, 150);

            childFrame.getContentPane().setBackground(Color.RED);

            final JCheckBox childVisible = new JCheckBox("Child Window Visibility");

            parentFrame.add(childVisible);

            childVisible.addItemListener(new ItemListener()

            {

               public void itemStateChanged(ItemEvent e)

               {

                  childFrame.setVisible(childVisible.isSelected());

               }          

            });

            childVisible.setSelected(true);

            parentFrame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

            parentFrame.setVisible(true);

         }

      });

   }

}