BoxLayout Demo 4
import java.awt.Color;
import java.awt.Component;
import javax.swing.BorderFactory;
import javax.swing.Box;
import javax.swing.BoxLayout;
import javax.swing.JComponent;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
public class BoxLayoutDemo {
private static JComponent createComponent(String s) {
JLabel l = new JLabel(s);
l.setBorder(BorderFactory
.createMatteBorder(5, 5, 5, 5, Color.DARK_GRAY));
l.setHorizontalAlignment(JLabel.CENTER);
l.setAlignmentX(Component.CENTER_ALIGNMENT); //use middle of row
return l;
}
public static void main(String[] args) {
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
JPanel p = new JPanel();
p.setLayout(new BoxLayout(p, BoxLayout.PAGE_AXIS));
p.add(createComponent("Component 1"));
p.add(Box.createVerticalGlue());
p.add(createComponent("Component 2"));
p.add(createComponent("Component 3"));
p.add(createComponent("Component 4"));
frame.setContentPane(p);
//Display the window.
frame.pack();
frame.setVisible(true);
}
}
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