Java: public class Multiplicadora extends Applet implements ActionListener

import java.applet.Applet;
import java.awt.*;
import java.awt.event.*;
/*
  <APPLET
     CODE=multiplicadora.class
     WIDTH=200
     HEIGHT=200 >
   </APPLET>
*/
public class multiplicadora extends Applet implements ActionListener {
    TextField text1, text2, answertext;
    Label multiplylabel;
    Button button1;
    public void init()
    {
        text1 = new TextField(10);
        add(text1);
        multiplylabel = new Label("*");
        add(multiplylabel);
        text2 = new TextField(10);
        add(text2);
        button1 = new Button("=");
        add(button1);
        button1.addActionListener(this);
                    
        answertext = new TextField(10);
        add(answertext);
    }
    public void actionPerformed(ActionEvent e) {
        if(e.getSource() == button1){
            //int sum = Integer.parseInt(text1.getText()) + Integer.parseInt(text2.getText());
            //answertext.setText(String.valueOf(sum));
            int product = Integer.parseInt(text1.getText()) * Integer.parseInt(text2.getText());
            answertext.setText(String.valueOf(product));
        }
    }
}