Get and set gap between text and icon for a JButton in Java

import javax.swing.Icon;
import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JFrame;
//  w  w  w.  j a va2  s .  c  o m
public class Main {
  public static void main(String[] argv) throws Exception {
    JFrame frame = new JFrame("DefaultButton");
    frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      
    JButton button = new JButton();
    // Add rollover icon
    Icon rolloverIcon = new ImageIcon("r.gif");
    button.setRolloverIcon(rolloverIcon);

    // Add pressed icon
    Icon pressedIcon = new ImageIcon("p.gif");
    button.setPressedIcon(pressedIcon);

    // To remove rollover icon, set to null
    button.setRolloverIcon(null);

    // To remove pressed icon, set to null
    button.setPressedIcon(null);
    
    // Get gap size; default is 4
    int gapSize = button.getIconTextGap();

    // Set gap size
    button.setIconTextGap(8);
    
    frame.add(button);
    frame.setSize(300, 200);
    frame.setVisible(true);

  }
}