// CountWords.java
// Counts the number of words in the TextField myTF
// Uses loops, Java 1.0 action() method, and BorderLayout

import java.awt.*;
import java.applet.*;

public class CountWords extends Applet
{
  TextField myTF      = new TextField();
  Label     wordCount = new Label("Type a sentence and press ENTER");

  public void init()
  {
    setLayout(new BorderLayout());
    add("North", wordCount);
    add("South", myTF);
  }

  public boolean action(Event e, Object o)
  {
    wordCount.setText("Words = " + countWords());
    return true;
  }

  public int countWords()
  {
    int     numWords  = 0;
    boolean inAWord   = false;

    String sentence = myTF.getText();

    for (int i = 0; i < sentence.length(); i++)
    {
      char ch = sentence.charAt(i);

      if (ch == ' ') // It is a space
      {
        if (inAWord) // Leaving word; reset
        {
          inAWord = false;
        }
        else
        {
          // Another space; do nothing
        }
      }
      else // Not a space
      {
        if (inAWord)
        {
          // Do nothing; already counted word
        }
        else // Starting new word; count it
        {
          numWords++;
          inAWord = true;
        }
          
      }
    }

    return numWords;
  }
}