import java.awt.BorderLayout;
import java.awt.Container;
import java.awt.GridLayout;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;
public class StrutSample {
public static void main(String args[]) {
Box horizontalBox;
JPanel panel;
JFrame frame = new JFrame("Horizontal Strut");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
Container contentPane = frame.getContentPane();
contentPane.setLayout(new GridLayout(0, 1));
horizontalBox = Box.createHorizontalBox();
horizontalBox.add(Box.createHorizontalStrut(10));
horizontalBox.add(new JButton("Left"));
horizontalBox.add(new JButton("Middle"));
horizontalBox.add(new JButton("Right"));
panel = new JPanel(new BorderLayout());
panel.add(horizontalBox);
panel.setBorder(BorderFactory.createTitledBorder("Beginning Strut"));
contentPane.add(panel);
horizontalBox = Box.createHorizontalBox();
horizontalBox.add(new JButton("Left"));
horizontalBox.add(Box.createHorizontalStrut(10));
horizontalBox.add(new JButton("Middle"));
horizontalBox.add(Box.createHorizontalStrut(25));
horizontalBox.add(new JButton("Right"));
panel = new JPanel(new BorderLayout());
panel.add(horizontalBox);
panel.setBorder(BorderFactory.createTitledBorder("2 Middle Struts"));
contentPane.add(panel);
horizontalBox = Box.createHorizontalBox();
horizontalBox.add(Box.createHorizontalStrut(25));
horizontalBox.add(new JButton("Left"));
horizontalBox.add(new JButton("Middle"));
horizontalBox.add(new JButton("Right"));
horizontalBox.add(Box.createHorizontalStrut(10));
panel = new JPanel(new BorderLayout());
panel.add(horizontalBox);
panel.setBorder(BorderFactory
.createTitledBorder("Beginning/End Struts"));
contentPane.add(panel);
horizontalBox = Box.createHorizontalBox();
horizontalBox.add(new JButton("Left"));
horizontalBox.add(new JButton("Middle"));
horizontalBox.add(new JButton("Right"));
panel = new JPanel(new BorderLayout());
horizontalBox.add(Box.createHorizontalStrut(10));
panel.add(horizontalBox);
panel.setBorder(BorderFactory.createTitledBorder("End Strut"));
contentPane.add(panel);
frame.setSize(300, 300);
frame.setVisible(true);
}
}