Anagram Detector

/** Checks if two words are anagrams or not
     * @param firstWord
     * @param secondWord
     */
    public static boolean areAnagram(String firstWord, String secondWord) {

        int numberOfUnique = 0;
        int processed = 0;
        if (firstWord.length() != secondWord.length()) {
            return false;
        }
        int[] chars = new int[256];
        for (int i = 0; i < firstWord.length(); i++) {
            if (chars[firstWord.charAt(i)] == 0) {
                numberOfUnique++;
            }
            chars[firstWord.charAt(i)]++;
        }
        for (int i = 0; i < secondWord.length(); i++) {
            // this char is not there so false
            if (chars[secondWord.charAt(i)] == 0)
                return false;

            chars[secondWord.charAt(i)]--;

            if (chars[secondWord.charAt(i)] == 0) {
                processed++;
                if (numberOfUnique == processed) {
                    System.out.println(processed);
                    return secondWord.length() == processed + 1;
                }
            }

        }