/** BoxPanel.java -- show components in a single file vertically or horizontally.
 *  When using a "Box" layout, we can insert a fixed or variable amount of
 *  space between components.
 */

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

public class BoxPanel extends JPanel
{
  public BoxPanel()
  {
    // For box layout, we need to specify the panel and either horiz/vert direction.
    setLayout(new BoxLayout(this, BoxLayout.Y_AXIS));
    setBackground(Color.green);
    
    JLabel caption = new JLabel("feed the birds");
    JLabel picture = new JLabel(new ImageIcon("lagoon.jpg"));
    JButton b1 = new JButton("Button 1");
    JButton b2 = new JButton("Button 2");
    JButton b3 = new JButton("Button 3");
    
    add(caption);
    add(Box.createRigidArea(new Dimension(0, 30)));     // hard-coded space
    add(picture);
    add(Box.createVerticalGlue());                     // put any extra space here
    add(b1);
    add(b2);
    add(b3);
  }
}