Create an empty border in Java

import javax.swing.BorderFactory;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
//from ww w  .jav a 2  s. com
public class Main extends JFrame {

  public Main() {
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    JPanel panel = new JPanel();
    JLabel label;

    label = new JLabel("Empty");
    label.setBorder(BorderFactory.createEmptyBorder(10, 20, 10, 20));
    panel.add(label);
    getContentPane().add(panel);
    pack();
  }

  public static void main(String[] args) {
    Main s = new Main();
    s.setVisible(true);
  }
}