How can I associate an ActionListener with a specific button

Question

I modified the code a lot. Everything works except that it does not associate the actionListener with the button. It will do the action when the window is minimized or maximized, but not when the button is clicked.
//July 2, 2011
//Multiplication Tables
import java.applet.*;
import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
public class MultTables extends JApplet implements ActionListener
     //Create Variables for Multiplication Problems
     int factorX = 1;
     int factorY = 1;
     int productZ = 1;
     int productReply;
     //Create the TextField
          JTextField answer = new JTextField(10);
     //Create Labels and buttons
          JLabel productZLabel = new JLabel(factorX + " * " + factorY + " = ");
          JButton checkAnswer = new JButton("Check Answer");
     //Create a container
          Container con = getContentPane();
          FlowLayout flow = new FlowLayout();
     public void init()
          //What goes init? What needs to be added to the interface?
          con.setLayout(flow);
          //Add Components and create interface
          con.add(productZLabel);
          con.add(answer);
          con.add(checkAnswer);
          //Add ActionListener to button
          checkAnswer.addActionListener(this);
     public void actionPerformed(ActionEvent e)
          productZ = factorX * factorY;
          String productReplyString = (answer.getText());
          productReply = (Integer.valueOf(productReplyString));
          for(int sub = 1; sub <= 9; ++sub);
          if (productReply == productZ)
               JLabel correct = new JLabel("That is correct!");
               con.remove(productZLabel);
               con.remove(answer);
               con.remove(checkAnswer);
               con.add(correct);
               ++factorX;
          else
               JLabel incorrect = new JLabel("The correct answer is " + productZ);
               con.remove(productZLabel);
               con.remove(answer);
               con.remove(checkAnswer);
               con.add(incorrect);
               ++factorX;
}

Answer 1

EJP wrote:
Are you sure you're running that code? It should work. ActionListeners don't respond to min/max events.Yup. But the repaint triggered by resizing updates the display.
db