import java.awt.*;
import javax.swing.*;
import java.awt.event.*;

public class Anonymous 
{
  public Anonymous ()
  {
    JFrame frame = new JFrame("Event Test");
    Container content = frame.getContentPane();
    content.setLayout(new FlowLayout());
    frame.setSize(300,300);

    JButton myButton = new JButton("Press Me!");
    content.add(myButton);

    ActionListener al = new ActionListener() {      
      public void actionPerformed(ActionEvent ae)
      {
        JButton jb = (JButton) ae.getSource();
        jb.setText("Thank You!");
      }
    };
    myButton.addActionListener(al);
    
    frame.setVisible(true);
  }

  public static void main(String[] args)
  {
    new Anonymous();
  }
}