import java.applet.*;
import java.awt.*;
import java.awt.event.*;

public class TextFieldEventApplet extends Applet implements ActionListener {

  TextField textField;

  public void init() {

    setLayout(new BorderLayout());

    textField = new TextField("Write in me!");
    textField.addActionListener(this);
    add(textField, BorderLayout.CENTER);
  }

  public void actionPerformed(ActionEvent e) {

    // do something when the ENTER key is hit
    textField.setText(textField.getText() + " CR");
  }
}