protected ElisionFilter(TokenStream input) 
{
    super(input);
    this.articles = new HashSet(Arrays.asList(new String[] { "l", "m", "t",
        "qu", "n", "s", "j" }));
}

Constructs an elision filter with standard stop words

 public ElisionFilter(TokenStream input,
    Set articles) 
{
    super(input);
    setArticles(articles);
}

Constructs an elision filter with a Set of stop words

 public ElisionFilter(TokenStream input,
    String[] articles) 
{
    super(input);
    setArticles(new HashSet(Arrays.asList(articles)));
}

Constructs an elision filter with an array of stop words

 public Token next() throws IOException 
{
    Token t = input.next();
    if (t == null)
      return null;
    String text = t.termText();
    System.out.println(text);
    int minPoz = -1;
    int poz;
    for (int i = 0; i <  apostrophes.length(); i++) {
      poz = text.indexOf(apostrophes.charAt(i));
      if (poz != -1)
        minPoz = (minPoz == -1) ? poz : Math.min(poz, minPoz);
    }
    if (minPoz != -1
        && articles.contains(text.substring(0, minPoz).toLowerCase()))
      text = text.substring(minPoz + 1);
    return new Token(text, t.startOffset(), t.endOffset(), t.type());
}

Returns the next input Token whith termText() without elisioned start

 public  void setArticles(Set articles) 
{
      
    this.articles = new HashSet();
    Iterator iter = articles.iterator();
    while (iter.hasNext()) {
      this.articles.add(((String) iter.next()).toLowerCase());
    }
}