如何设置按钮的大小？(Swing)

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

public class ButtonSizeExample {
    public static void main(String[] args) {
        JFrame frame = new JFrame("Button Size Example");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        JButton button = new JButton("Click me");
        button.setPreferredSize(new Dimension(200, 100));
        
        frame.getContentPane().add(button);
        frame.pack();
        frame.setVisible(true);
    }
}