在正在运行的应用程序上Swing JLabel文本更改

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

public class JLabelTextChangeExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("JLabel Text Change Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setSize(400, 300);

        JLabel label = new JLabel("Original Text");
        frame.getContentPane().add(label, BorderLayout.CENTER);

        JButton button = new JButton("Change Text");
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                label.setText("Text has been changed!");
            }
        });
        frame.getContentPane().add(button, BorderLayout.SOUTH);

        frame.setVisible(true);
    }
}