English stop words in Lucene (lucene-5.1.0/analysis/common/src/java/org/apache/lucene/analysis/core/StopAnalyzer.java)

StopAnalyzer.java

  static {
    final List<String> stopWords = Arrays.asList(
      "a", "an", "and", "are", "as", "at", "be", "but", "by",
      "for", "if", "in", "into", "is", "it",
      "no", "not", "of", "on", "or", "such",
      "that", "the", "their", "then", "there", "these",
      "they", "this", "to", "was", "will", "with"
    );
    final CharArraySet stopSet = new CharArraySet(stopWords, false);
    ENGLISH_STOP_WORDS_SET = CharArraySet.unmodifiableSet(stopSet); 
  }