Java AbstractButton .setActionCommand (String actionCommand)

public void setActionCommand(String actionCommand)

import javax.swing.AbstractButton;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.event.ChangeEvent;
import javax.swing.event.ChangeListener;
/*from w  w  w  . ja  v a  2 s.  c  om*/
public class Main {
  public static void main(String[] args) {
    AbstractButton jb = new JButton("Press Me");

    jb.addChangeListener(new ChangeListener() {
      public void stateChanged(ChangeEvent ev) {
        System.out.println("ChangeEvent!");
      }
    });
    jb.setActionCommand("Bob");

    JFrame f = new JFrame();
    f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    f.getContentPane().add(jb);
    f.pack();
    f.setVisible(true);
  }
}