Java Swing JButton对齐- BoxLayout

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

public class JButtonAlignmentExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("JButton Alignment Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        JPanel panel = new JPanel();
        panel.setLayout(new BoxLayout(panel, BoxLayout.X_AXIS));
        
        JButton button1 = new JButton("Button 1");
        JButton button2 = new JButton("Button 2");
        JButton button3 = new JButton("Button 3");
        
        panel.add(button1);
        panel.add(button2);
        panel.add(button3);
        
        frame.getContentPane().add(panel);
        
        frame.setSize(300, 200);
        frame.setVisible(true);
    }
}