如何在swing中动态增加JDialog大小？

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

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

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

        JButton button = new JButton("Open Dialog");
        button.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                openDialog();
            }
        });

        frame.getContentPane().add(button);
        frame.pack();
        frame.setVisible(true);
    }

    private static void openDialog() {
        JDialog dialog = new JDialog();
        dialog.setTitle("Dynamic Dialog");
        dialog.setDefaultCloseOperation(JDialog.DISPOSE_ON_CLOSE);

        JPanel contentPane = new JPanel();
        contentPane.setPreferredSize(new Dimension(200, 200)); // 初始大小
        dialog.setContentPane(contentPane);

        JButton increaseButton = new JButton("Increase Size");
        increaseButton.addActionListener(new ActionListener() {
            public void actionPerformed(ActionEvent e) {
                Dimension currentSize = contentPane.getPreferredSize();
                int increasedWidth = currentSize.width + 50;
                int increasedHeight = currentSize.height + 50;
                contentPane.setPreferredSize(new Dimension(increasedWidth, increasedHeight));
                dialog.pack(); // 重新布局并调整大小
            }
        });

        contentPane.add(increaseButton);
        dialog.pack();
        dialog.setVisible(true);
    }
}