desktopanddialog.java

北京大学出版社的

package examples.windows;
import javax.swing.*;
import java.awt.*;
/** An example class used to demonstrate the use of 
  * the JDesktopPane, JInternalFrame, and
  * JOptionPane components
  */
public class DesktopAndDialog extends JFrame {
   private static final boolean RESIZABLE = true;
   private static final boolean CLOSABLE = true;
   private static final boolean MAXIMIZABLE = true;
   private static final boolean ICONIFIABLE = true;
   private static final boolean MODAL = false;

   /** Class constructor method
     * @param titleText Window's title bar text
     */
   public DesktopAndDialog( String titleText ) {
      super( titleText );
      addWindowListener( new WindowCloser() );

      JInternalFrame ifrm = new JInternalFrame(
         "Internal Frame",
         RESIZABLE, CLOSABLE, MAXIMIZABLE, ICONIFIABLE );
      ifrm.setPreferredSize( new Dimension( 375, 300 ) );

      JDesktopPane dt = new JDesktopPane();
      dt.setLayout( new FlowLayout() );
      dt.add( ifrm );
      getContentPane().add( dt, BorderLayout.CENTER );
      
      setSize( 500, 400 );
      setVisible( true );
      JOptionPane.showMessageDialog( 
         ifrm, "This is a JOptionPane" );
   }

   /** The test method for the class
     * @param args not used
     */
   public static void main( String[] args ) {
      new DesktopAndDialog(
         "Example Desktop with Dialog" );
   }
}