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

public class test extends JFrame{
 private JLabel promptLabel;
 private JTextField inputField;
 private JTextArea outputArea;
 
 
  public test(){
   super("ceshi StringTokenizer");
   Container container=getContentPane();
   container.setLayout(new FlowLayout());
   promptLabel=new JLabel("shu ru yi ge shu");
   container.add(promptLabel);
   inputField=new JTextField(20);
   
   
   
   inputField.addActionListener(new ActionListener(){
    public void actionPerformed(ActionEvent event){
     StringTokenizer tokens=new StringTokenizer(event.getActionCommand());
     
     outputArea.setText("Number of elements"+tokens.countTokens()+"\nThe tokens are:\n");
     
     while(tokens.hasMoreTokens())
     outputArea.append(tokens.nextToken()+"\n");
    }
   });
   
   container.add(inputField);
   outputArea=new JTextArea(10,20);
   outputArea.setEditable(false);
   container.add(new JScrollPane(outputArea));
   
   setSize(275,240);
   setVisible(true);
   
  }
 
  public static void main(String args[]){
   test application=new test();
   application.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
  }
}

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