class Palindromes {

  public boolean evaluate(String word) {
    if (word == null) {
      throw new IllegalArgumentException("You can't pass a null String as input.");
    }
    boolean result = true;
    int length = word.length();
    for (int i = 0; i < length / 2; i++) {
      if (word.charAt(i) != word.charAt(length - 1 - i)) {
        result = false;
        break;
      }
    }
    return result;
  }

}