Re: Labeled button row using BorderLayout

On 9/30/2010 12:41 PM, Fred wrote:

You can use a Box layout to do this, and insert stretchy "glue" bits
before and after the component to get a centered effect.

In the example below, I make two Boxes. One is a vertical layout, and
holds the stretchy glue bits. It has just one component, which is the
entire row of buttons.

Then the row of buttons itself is just a box with a horizontal
configuration (and no glue).

For more one Box and glue, see the Swing tutorial:

<http://download.oracle.com/javase/tutorial/uiswing/layout/box.html>

package test;

import java.awt.BorderLayout;
import java.awt.Component;
import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.SwingUtilities;

public class BorderLayoutTest {

    public static void main( String[] args )
    {
       SwingUtilities.invokeLater( new Runnable() {

          public void run()
          {
             createAndShowGui();
          }

       } );
    }

    private static void createAndShowGui()
    {
       JFrame frame = new JFrame();
       Box centerPanel = Box.createVerticalBox();
       Box buttonRow = Box.createHorizontalBox();
       buttonRow.add( new JButton( "Button 1" ) );
       buttonRow.add( new JButton( "Button 2" ) );
       buttonRow.add( new JButton( "Button 3" ) );
       buttonRow.add( new JButton( "Button 4" ) );

       centerPanel.add( Box.createVerticalGlue() );
       centerPanel.add( buttonRow );
       centerPanel.add( Box.createVerticalGlue() );
       frame.add( centerPanel );
       frame.add( new JLabel( "West" ), BorderLayout.WEST );

       frame.pack();
       frame.setDefaultCloseOperation( JFrame.EXIT_ON_CLOSE );
       frame.setLocationRelativeTo( null );
       frame.setVisible( true );
    }

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