Word count and my ActionPerformed

Question

I am having a little trouble with my program and was wondering if anyone could spot the mistake... I am trying to make a simple application that will count the number of words in a text field via click of a button and display the results.
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
public class WordCount extends JFrame implements ActionListener
// added JTextPane, JScrollPane, JPanel JTextField, and JButton
    public static void main(String[] args)
     // layout
    public WordCount()
          super();
          Container cp = getContentPane();
          wordCount.setEditable(false);
          south.setLayout(new FlowLayout(FlowLayout.CENTER));
          south.add(jbtCount);
               jbtCount.addActionListener (this);
          south.add(new JLabel("  Word Count: "));
          south.add(wordCount);
          cp.add(BorderLayout.CENTER,jsPane);
          cp.add(BorderLayout.SOUTH,south);
     public void actionPerformed(ActionEvent e)
          //if(e.getSource() == jbtCount)   // user clicks Count Words Button
          Object s = e.getSource();
         if ( s instanceof Button )
              jtPane.setDocument(new DefaultStyledDocument() {
                    public void insertString(int offset, String str, AttributeSet as) throws BadLocationException
                       super.insertString(offset,str,as);
                       String text = jtPane.getText();
                       String[] tokens = text.split(" ");
                       wordCount.setText("" + countValid(tokens));
                     public void remove(int offset, int len) throws BadLocationException
                       super.remove(offset,len);
                       String text = jtPane.getText();
                       String[] tokens = text.split(" ");
                         wordCount.setText("" + countValid(tokens));
              else{}
     } // end actionPerformed
     private int countValid(String[] tokens)
          int count = 0;
         for (int i = 0; i < tokens.length; i++)
                if (tokens.trim().length() != 0)
          count++;
     return count;
} // end public class WordCount

Answer 1

import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.text.*;
public class WordCount extends JFrame implements ActionListener
     JTextPane jtPane = new JTextPane();
     JScrollPane jsPane = new JScrollPane(jtPane);
     JPanel south = new JPanel();
     JTextField wordCount = new JTextField(20);
     JButton jbtCount = new JButton("Count Words");
    public static void main(String[] args)
          int width = 700;
          int height = 300;
           WordCount f = new WordCount();
        f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
         f.setSize(width, height);
         f.setTitle("Word Counter");
         f.setLocation(200, 200);
         f.setVisible(true);
    public WordCount()
          super();
          Container cp = getContentPane();
          wordCount.setEditable(false);
          south.setLayout(new FlowLayout(FlowLayout.CENTER));
          south.add(jbtCount);
               jbtCount.addActionListener (this);
          south.add(new JLabel("  Word Count: "));
          south.add(wordCount);
          cp.add(BorderLayout.CENTER,jsPane);
          cp.add(BorderLayout.SOUTH,south);
     public void actionPerformed(ActionEvent e)
          //if(e.getSource() == jbtCount)   // user clicks Count Words Button
          Object s = e.getSource();
              // *** process Button actions
        if ( s instanceof Button )
              jtPane.setDocument(new DefaultStyledDocument() {
                    public void insertString(int offset, String str, AttributeSet as) throws BadLocationException
                       super.insertString(offset,str,as);
                       String text = jtPane.getText();
                       String[] tokens = text.split(" ");
                       wordCount.setText("" + countValid(tokens));
                     public void remove(int offset, int len) throws BadLocationException
                       super.remove(offset,len);
                       String text = jtPane.getText();
                       String[] tokens = text.split(" ");
                         wordCount.setText("" + countValid(tokens));
              else{}
     }// end actionPerformed
     private int countValid(String[] tokens)
          int count = 0;
         for (int i = 0; i < tokens.length; i++)
                if (tokens.trim().length() != 0)
          count++;
     return count;
} // end public class WordCount