HashMap words;  // HashMap object
  
  String[] tokens;  // Array of all words from input file
  int counter;
  
  PFont f;
  
  void setup() {
    size(640, 360);
    words = new HashMap();
  
    // Load file and chop it up
    String[] lines = loadStrings("dracula.txt");
    String allText = join(lines, " ");
    tokens = splitTokens(allText, " ,.?!:;[]-");
    f = createFont("Georgia", 36, true);  
  }
  
  void draw() {
    background(255);
    fill(0);
    
    // Look at words one at a time
    String s = tokens[counter];
    counter = (counter + 1) % tokens.length;
  
    // Is the word in the HashMap
    if (words.containsKey(s)) {
      // Get the word object and increase the count
      // We access objects from a HashMap via its key, the String
      Word w = (Word) words.get(s);
      w.count(); 
    } else {
      // Otherwise make a new word
      Word w = new Word(s);
      // And add to the HashMap
      // put() takes two arguments, "key" and "value"
      // The key for us is the String and the value is the Word object
      words.put(s, w);    
    }
  
    // Make an iterator to look at all the things in the HashMap
    Iterator i = words.values().iterator();
  
    // x and y will be used to locate each word
    float x = 0;
    float y = height-10;
  
    while (i.hasNext()) {
      // Look at each word
      Word w = (Word) i.next();
      
      // Only display words that appear 3 times
      if (w.count > 3) {
        // The size is the count
        int fsize = constrain(w.count, 0, 100);
        textFont(f, fsize);
        text(w.word, x, y);
        // Move along the x-axis
        x += textWidth(w.word + " ");
      }
      
      // If x gets to the end, move Y
      if (x > width) {
        x = 0;
        y -= 100;
        // If y gets to the end, we're done
        if (y < 0) {
          break; 
        }
      }
    } 
  }