Java ActionEvent compare event source to component instance

import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;

import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JPanel;

public class Main extends JFrame implements ActionListener {
   private JButton button1 = new JButton("Click Me!");
   private int clickCount = 0;

   public Main() {
      this.setSize(200, 100);
      this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
      this.setTitle("I'm Listening");

      JPanel panel1 = new JPanel();
      button1.addActionListener(this);
      panel1.add(button1);/*from   w w w  . j  a  va2 s  .c o m*/
      this.add(panel1);

      this.setVisible(true);
   }

   public void actionPerformed(ActionEvent e) {
      if (e.getSource() == button1) {
         clickCount++;
         if (clickCount == 1)
            button1.setText("I've been clicked!");
         else
            button1.setText("I've been clicked" + clickCount + " times!");
      }
   }
   public static void main(String[] args) {
      new Main();
   }
}