在Jpanel上显示从Jfilechooser中选择的图像

import javax.swing.*;
import java.awt.*;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import java.io.File;

public class ImageDisplay extends JFrame {
    private JPanel panel;
    
    public ImageDisplay() {
        setTitle("Image Display");
        setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        setLayout(new BorderLayout());
        
        panel = new JPanel();
        add(panel, BorderLayout.CENTER);
        
        JButton button = new JButton("选择图像");
        button.addActionListener(new ActionListener() {
            @Override
            public void actionPerformed(ActionEvent e) {
                JFileChooser fileChooser = new JFileChooser();
                fileChooser.setCurrentDirectory(new File(System.getProperty("user.home")));
                int result = fileChooser.showOpenDialog(ImageDisplay.this);
                if (result == JFileChooser.APPROVE_OPTION) {
                    File selectedFile = fileChooser.getSelectedFile();
                    String imagePath = selectedFile.getAbsolutePath();
                    ImageIcon imageIcon = new ImageIcon(imagePath);
                    JLabel label = new JLabel(imageIcon);
                    panel.removeAll();
                    panel.add(label);
                    pack();
                    repaint();
                }
            }
        });
        add(button, BorderLayout.NORTH);
        
        pack();
        setVisible(true);
    }
    
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            @Override
            public void run() {
                new ImageDisplay();
            }
        });
    }
}