Java Swing - 如何更改JButton水平文本位置

import javax.swing.ImageIcon;
import javax.swing.JButton;
import javax.swing.JOptionPane;
import javax.swing.SwingConstants;
public class Main {
  public static void main(final String args[]) {
    JButton button = new JButton("Test");

    button.setHorizontalTextPosition(SwingConstants.LEFT);
    button.setIcon(new ImageIcon("r.gif"));
    button.setRolloverIcon(new ImageIcon("b.gif"));
    button.setRolloverEnabled(true);

    
    JOptionPane.showMessageDialog(null, button);
  }
}