// Fig. 12.25: BorderLayoutDemo.java
// Demonstrating BorderLayout.

// Java core packages
import java.awt.*;
import java.awt.event.*;

// Java extension packages
import javax.swing.*;

public class BorderLayoutDemo extends JFrame
   implements ActionListener {

   private JButton buttons[];
   private String names[] = { "Hide North", "Hide South", 
      "Hide East", "Hide West", "Hide Center" };
   private BorderLayout layout;

   // set up GUI and event handling
   public BorderLayoutDemo()
   {
      super( "BorderLayout Demo" );

      layout = new BorderLayout( 5, 5 );

      // get content pane and set its layout
      Container container = getContentPane();
      container.setLayout( layout );

      // instantiate button objects
      buttons = new JButton[ names.length ];

      for ( int count = 0; count < names.length; count++ ) {
         buttons[ count ] = new JButton( names[ count ] );
         buttons[ count ].addActionListener( this );
      }

      // place buttons in BorderLayout; order not important
      container.add( buttons[ 0 ], BorderLayout.NORTH ); 
      container.add( buttons[ 1 ], BorderLayout.SOUTH ); 
      container.add( buttons[ 2 ], BorderLayout.EAST );  
      container.add( buttons[ 3 ], BorderLayout.WEST );  
      container.add( buttons[ 4 ], BorderLayout.CENTER ); 

      setSize( 300, 200 );
      setVisible( true );
   } 

   // handle button events
   public void actionPerformed( ActionEvent event )
   {
      for ( int count = 0; count < buttons.length; count++ )

         if ( event.getSource() == buttons[ count ] )
            buttons[ count ].setVisible( false );
         else
            buttons[ count ].setVisible( true );

      // re-layout the content pane
      layout.layoutContainer( getContentPane() );
   }

   // execute application
   public static void main( String args[] )
   { 
      BorderLayoutDemo application = new BorderLayoutDemo();

      application.setDefaultCloseOperation(
         JFrame.EXIT_ON_CLOSE );
   }

}  // end class BorderLayoutDemo

/**************************************************************************
 * (C) Copyright 2002 by Deitel & Associates, Inc. and Prentice Hall.     *
 * All Rights Reserved.                                                   *
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 * DISCLAIMER: The authors and publisher of this book have used their     *
 * best efforts in preparing the book. These efforts include the          *
 * development, research, and testing of the theories and programs        *
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