Border layout demo

 import java.awt.*;
 import java.awt.event.*;
 import javax.swing.*;

 public class BorderLayoutDemo extends JFrame
 implements ActionListener {
 private JButton b[];
 private String names[] =
 { "Hide North", "Hide South", "Hide East",
 "Hide West", "Hide Center" };
 private BorderLayout layout;

 public BorderLayoutDemo()
 {
 super( "BorderLayout Demo" );

 layout = new BorderLayout( 5, 5 );

 Container c = getContentPane();
 c.setLayout( layout );

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

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

 // order not important
 c.add( b[ 0 ], BorderLayout.NORTH ); // North position
 c.add( b[ 1 ], BorderLayout.SOUTH ); // South position
 c.add( b[ 2 ], BorderLayout.EAST ); // East position
 c.add( b[ 3 ], BorderLayout.WEST ); // West position
 c.add( b[ 4 ], BorderLayout.CENTER ); // Center position

 setSize( 300, 200 );
 show();
 }

 public void actionPerformed( ActionEvent e )
 {
 for ( int i = 0; i < b.length; i++ )
 if ( e.getSource() == b[ i ] )
 b[ i ].setVisible( false );
 else
 b[ i ].setVisible( true );

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

 public static void main( String args[] )
 {
 BorderLayoutDemo app = new BorderLayoutDemo();

 app.addWindowListener(
 new WindowAdapter() {
 public void windowClosing( WindowEvent e )
 {
 System.exit( 0 );
 }
 }
 );
 }
 }