无法从动态检索的数据在JPanel中显示JTable

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

public class JTableExample {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(new Runnable() {
            public void run() {
                createAndShowGUI();
            }
        });
    }

    private static void createAndShowGUI() {
        JFrame frame = new JFrame("JTable Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);

        // 创建数据模型
        Object[][] data = {
            {"Row1-Col1", "Row1-Col2"},
            {"Row2-Col1", "Row2-Col2"}
        };
        String[] columnNames = {"Column 1", "Column 2"};
        DefaultTableModel model = new DefaultTableModel(data, columnNames);

        // 创建JTable并设置模型
        JTable table = new JTable(model);

        // 将JTable放入JScrollPane
        JScrollPane scrollPane = new JScrollPane(table);

        // 创建JPanel并将JScrollPane添加到其中
        JPanel panel = new JPanel(new BorderLayout());
        panel.add(scrollPane, BorderLayout.CENTER);

        // 将JPanel添加到JFrame并显示
        frame.add(panel);
        frame.pack();
        frame.setVisible(true);
    }
}