title: NumberFormatException on parsing JTextField input
body: <p>The Java applet has a working code, I think. However, I am not getting my program executed the way I want it to. </p>
  
  <p>Here is the message it shows when it runs (on parsing <code>JTextField</code> input):</p>
  
  <pre><code>java.lang.NumberFormatException: For input string: ""
      at java.lang.NumberFormatException.forInputString(Unknown Source)
      at java.lang.Integer.parseInt(Unknown Source)
      at java.lang.Integer.parseInt(Unknown Source)
      at skiRace.init(skiRace.java:24)
      at ready.AppletRunner.run(AppletRunner.java:209)
      at java.lang.Thread.run(Unknown Source)
  </code></pre>
  
  <p>Here is my code:</p>
  
  <pre><code>import java.applet.*;
  import java.awt.*;
  import javax.swing.*;
  import java.awt.event.*;
  
  public class skiRace extends Applet implements ActionListener
  {
  int txt = 0;
  int txt2 = 0;
  int txt3 = 0;
  int txt4 = 0;
  
  public void init ()
  {
      resize (300, 350);
      setBackground (Color.blue);
      JLabel pic = new JLabel (createImageIcon ("race.jpg"));
  
      JLabel ins = new JLabel ("Enter the number of points beside each skier.");
      ins.setFont (new Font ("Arial", Font.BOLD, 12));
  
      JLabel p1 = new JLabel (createImageIcon ("player1.jpg"));
      JTextField answer = new JTextField (3);
      int txt = Integer.parseInt (answer.getText ());
  
      JLabel p2 = new JLabel (createImageIcon ("player2.jpg"));
      JTextField answer2 = new JTextField (3);
      int txt2 = Integer.parseInt (answer2.getText ());
  
      JLabel p3 = new JLabel (createImageIcon ("player3.jpg"));
      JTextField answer3 = new JTextField (3);
      int txt3 = Integer.parseInt (answer3.getText ());
  
      JLabel p4 = new JLabel (createImageIcon ("player4.jpg"));
      JTextField answer4 = new JTextField (3);
      int txt4 = Integer.parseInt (answer4.getText ());
  
      JButton done = new JButton ("Done");
      done.setActionCommand ("done");
      done.addActionListener (this);
  
      add (pic);
      add (ins);
      add (p1);
      add (answer);
      add (answer2);
      add (answer3);
      add (answer4);
      add (done);
  
  }
  
  
  public void actionPerformed (ActionEvent e)
  {
      if (e.getActionCommand ().equals ("done"))
      {
          if ((txt == 7) &amp;&amp; (txt2 == 8) &amp;&amp; (txt3 == 6) &amp;&amp; (txt4 == 9))
          {
              JOptionPane.showMessageDialog (null, "You got it! Great work!", "Correct",
                      JOptionPane.INFORMATION_MESSAGE);
          }
          else
          {
              JOptionPane.showMessageDialog (null, "You are incorrect, please try again.",
                      "Incorrect", JOptionPane.ERROR_MESSAGE);
          }
      }
  }
  
  
  protected static ImageIcon createImageIcon (String path)
  {
      java.net.URL imgURL = dice.class.getResource (path);
      if (imgURL != null)
      {
          return new ImageIcon (imgURL);
      }
      else
      {
          System.err.println ("Couldn't find file: " + path);
          return null;
      }
  }
  }
  </code></pre>
  
  <p>Why is this happening? </p>
  
  <p>I think it has something to do with the dialog boxes or text fields with input, since this is my first program using either of those two functions in a Java applet. </p>