java code for Laying Out a Screen with Different Component Alignments

import java.awt.Component;

import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class AlignY {

public static void main(String args[]) {
JFrame frame = new JFrame("Y Alignment");
JPanel contentPane = (JPanel) frame.getContentPane();

BoxLayout layout = new BoxLayout(contentPane, BoxLayout.X_AXIS);
contentPane.setLayout(layout);

JButton button = new JButton("0.0");
button.setAlignmentY(Component.TOP_ALIGNMENT);
contentPane.add(button);
button = new JButton("1.0");
button.setAlignmentY(Component.BOTTOM_ALIGNMENT);
contentPane.add(button);
button = new JButton("0.5");
button.setAlignmentY(Component.CENTER_ALIGNMENT);
contentPane.add(button);

frame.setSize(200, 100);
frame.show();
}
}