Source CodeEclipse : BoxLayoutDemo

import java.awt.Component;
import java.awt.Container;
import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;


public class BoxLayoutDemo {
    public static void addComponentsToPane(Container pane) {
        pane.setLayout(new BoxLayout(pane, BoxLayout.Y_AXIS));


        addAButton("Button 1", pane);
        addAButton("Button 2", pane);
        addAButton("Button 3", pane);
        addAButton("Long-Named Button 4", pane);
        addAButton("5", pane);
    }


    private static void addAButton(String text, Container container) {
        JButton button = new JButton(text);
        button.setAlignmentX(Component.CENTER_ALIGNMENT);
        container.add(button);
       
    }


  
    private static void createAndShowGUI() {
       
        JFrame frame = new JFrame("BoxLayoutDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLocationRelativeTo(null);
      
        addComponentsToPane(frame.getContentPane());


      
        frame.pack();
        frame.setVisible(true);
    }


    public static void main(String[] args) {
       
        javax.swing.SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }
}




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