重置/删除Swing中的边框

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

public class ResetSwingBorderExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Reset Swing Border Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(300, 200);
        
        JPanel panel = new JPanel(new BorderLayout());
        panel.setBorder(new EmptyBorder(10, 10, 10, 10));
        
        JLabel label = new JLabel("This is a reset border label.");
        label.setBorder(new EmptyBorder(0, 0, 0, 0));
        panel.add(label, BorderLayout.NORTH);
        
        JButton button = new JButton("Reset Border");
        button.addActionListener(e -> {
            label.setBorder(new EmptyBorder(10, 10, 10, 10));
        });
        panel.add(button, BorderLayout.SOUTH);
        
        frame.add(panel);
        frame.setVisible(true);
    }
}