import javax.swing.BoxLayout;
import javax.swing.JButton;
import javax.swing.JFrame;
public class BoxLayoutTest {
public static void main(String[] args) {
JFrame.setDefaultLookAndFeelDecorated(true);
JFrame frame = new JFrame("BoxLayout Test");
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
BoxLayout boxLayout = new BoxLayout(frame.getContentPane(), BoxLayout.Y_AXIS); // top to bottom
frame.setLayout(boxLayout);
frame.add(new JButton("Button 1"));
frame.add(new JButton("Button 2"));
frame.add(new JButton("Button 3"));
frame.pack();
frame.setVisible(true);
}
}
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