Java/Swing - 如何减小JDialog构造函数的大小？

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

public class Main {
    public static void main(String[] args) {
        SwingUtilities.invokeLater(() -> {
            JFrame frame = new JFrame("JDialog Size Example");
            frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
            frame.setSize(400, 300);

            JButton button = new JButton("Open JDialog");
            button.addActionListener(e -> {
                JDialog dialog = new JDialog(frame, "JDialog Example", Dialog.ModalityType.MODELESS);
                dialog.setSize(200, 100);

                JPanel panel = new JPanel();
                panel.setLayout(new GridLayout(2, 1));

                JLabel label1 = new JLabel("Label 1");
                JLabel label2 = new JLabel("Label 2");

                panel.add(label1);
                panel.add(label2);

                dialog.add(panel);
                dialog.setVisible(true);
            });

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