Hello everyone my first question on stack overflow

import javax.swing.*;
import java.util.*;
import java.awt.event.*;

public class TI extends JFrame implements ActionListener
{
static int count=0;
String ct;
JTextField word;
JTextArea tohide;
public static void main(String arg[])
{
    TI ti=new TI();
}

public TI()
{

    JPanel j=new JPanel();
    JLabel def=new JLabel("Enter the text to be encrypted");
    word=new JTextField("",20);
    tohide=new JTextArea("",5,20);
    JButton jb=new JButton("COUNT");
    tohide.setBorder(BorderFactory.createLoweredBevelBorder());
    j.add(def);
    j.add(tohide);
    j.add(word);
    j.add(jb);
    add(j);
    setSize(500,500);
    setVisible(true);
    setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
    setLocationRelativeTo(null);
    jb.addActionListener(this);

}

public void actionPerformed(ActionEvent ae)
{

    String txt=tohide.getText();
    StringTokenizer stk=new StringTokenizer(txt," ");
    while(stk.hasMoreTokens())
    {
        String token=stk.nextToken();
        count++;
    }
    ct=Integer.toString(count);;
    word.setText(ct);

   }

    }

I want to count the number of words that are being typed in the textarea.There is a logical error.As I keep clicking the count button the word count increases.