Java Swing - 如何更改JLabel大小

import java.awt.Dimension;

import javax.swing.JLabel;
import javax.swing.JOptionPane;

public class Main {
  public static void main(String[] args) {
    
    JLabel label = new JLabel("w3cschool.cn", JLabel.LEFT);
    label.setPreferredSize(new Dimension(150, 100));
    
    JOptionPane.showMessageDialog(null, label);
    
  }
}