Swing Dialog Modality

import java.awt.*;
import java.awt.event.*;

public class ModalityDemo {

	// First document (red): frame, modeless dialog box,
	// document-modal dialog box
	private static Frame f1;
	private static Dialog d11;
	private static Dialog d12;

	// Second document (blue): frame, modeless dialog box,
	// document-modal dialog box
	private static Frame f2;
	private static Dialog d21;
	private static Dialog d22;

	// Third document (green): modal excluded frame
	private static Frame f3;

	// Fourth document (grey): frame, file dialog box
	// application-modal dialog box
	private static Frame f4;
	private static FileDialog fd4;

	private static WindowListener closeWindow = new WindowAdapter() {

		public void windowClosing(WindowEvent e) {

			e.getWindow().dispose();
		}
	};

	public static void main(String[] args) {

		GraphicsEnvironment ge =
			GraphicsEnvironment.getLocalGraphicsEnvironment();
		GraphicsDevice gd = ge.getDefaultScreenDevice();
		GraphicsConfiguration gc = gd.getDefaultConfiguration();
		int sw = gc.getBounds().width - 64;
		int sh = gc.getBounds().height - 64;

		Label l;
		Button b;
		MenuBar mb;
		Menu m;
		MenuItem mi;

		Font labelFont = new Font("Tahoma", 24, Font.PLAIN);

		// First document

		f1 = new Frame("Parent Frame");
		f1.setBounds(32, 32, 300, 200);
		f1.addWindowListener(closeWindow);
		mb = new MenuBar();
		m = new Menu("Test");
		mi = new MenuItem("Show modeless");
		mi.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				d11.setVisible(true);
			}
		});
		m.add(mi);
		mb.add(m);
		f1.setMenuBar(mb);
		f1.setLayout(new BorderLayout());
		l = new Label("FRAME");
		l.setAlignment(Label.CENTER);
		l.setFont(labelFont);
		l.setBackground(Color.RED);
		f1.add(l, BorderLayout.CENTER);
		f1.setVisible(true);

		d11 = new Dialog(f1, "Modeless Dialog");

		// An old constructor. Because the flag "modal" is
		// missed, the dialog box is modeless.

		d11.setBounds(132, 132, 300, 200);
		d11.addWindowListener(closeWindow);
		d11.setLayout(new BorderLayout());
		l = new Label("MODELESS");
		l.setAlignment(Label.CENTER);
		l.setFont(labelFont);
		l.setBackground(Color.RED);
		d11.add(l, BorderLayout.CENTER);
		b = new Button("Show document-modal");
		b.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				d12.setVisible(true);
			}
		});
		d11.add(b, BorderLayout.SOUTH);

		d12 = new Dialog(
			(Window) d11, "Document-modal Dialog",
			Dialog.ModalityType.DOCUMENT_MODAL);

		// New constructor with parameter for its modality type
		// Parameter type is enum Dialog.ModalityType.

		d12.setBounds(232, 232, 300, 200);
		d12.addWindowListener(closeWindow);
		d12.setLayout(new BorderLayout());
		l = new Label("DOCUMENT_MODAL");
		l.setAlignment(Label.CENTER);
		l.setFont(labelFont);
		l.setBackground(Color.RED);
		d12.add(l, BorderLayout.CENTER);

		// Second document

		f2 = new Frame("Parent Frame");
		f2.setBounds(sw - 300 + 32, 32, 300, 200);
		f2.addWindowListener(closeWindow);
		mb = new MenuBar();
		m = new Menu("Test");
		mi = new MenuItem("Show modeless");
		mi.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				d21.setVisible(true);
			}
		});
		m.add(mi);
		mb.add(m);
		f2.setMenuBar(mb);
		f2.setLayout(new BorderLayout());
		l = new Label("FRAME");
		l.setBackground(Color.BLUE);
		l.setAlignment(Label.CENTER);
		l.setFont(labelFont);
		f2.add(l, BorderLayout.CENTER);
		f2.setVisible(true);

		d21 = new Dialog(f2, "Modeless Dialog");
		d21.setBounds(sw - 400 + 32, 132, 300, 200);
		d21.addWindowListener(closeWindow);
		d21.setLayout(new BorderLayout());
		l = new Label("MODELESS");
		l.setBackground(Color.BLUE);
		l.setAlignment(Label.CENTER);
		l.setFont(labelFont);
		d21.add(l, BorderLayout.CENTER);
		b = new Button("Show document-modal");
		b.addActionListener(new ActionListener() {

			public void actionPerformed(ActionEvent e) {

				Rectangle bounds = d21.getBounds();
				bounds.x -= 70;
				bounds.y += 70;
				d22.setBounds(bounds);
				d22.setVisible(true);
			}
		});
		d21.add(b, BorderLayout.SOUTH);

		d22 = new Dialog(
			(Window) d21, "Document-modal Dialog",
			Dialog.ModalityType.DOCUMENT_MODAL);
		l = new Label("DOCUMENT_MODAL");
		l.setAlignment(Label.CENTER);
		l.setFont(labelFont);
		l.setBackground(Color.BLUE);
		d22.add(l, BorderLayout.CENTER);
		d22.addWindowListener(closeWindow);
	}

}