import javax.swing.*;
import java.awt.event.*;                                 
public class ClickMe extends JFrame implements ActionListener           
{
      public static void main(String [] args)            
      {
          new ClickMe();
      }

      private JButton button1;                           

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

          JPanel panel1 = new JPanel();
          button1 = new JButton("Click Me!");               
          button1.addActionListener(this);                  
          panel1.add(button1);
          this.add(panel1);

          this.setVisible(true);
      }

      private int clickCount = 0;                        

      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!");
          }
      }
}