stores words and their corresponding frequencies in parallel array lists parameters . the frequencies are sorted from low to high . concode_field_sep Comparator<Map.Entry<String,Int>> SORT_ALPHABETICALLY concode_elem_sep int _totalWords concode_elem_sep Set<String> _ignoreWords concode_elem_sep Comparator<Map.Entry<String,Int>> SORT_BY_FREQUENCY concode_elem_sep Map<String,Int> _wordFrequency concode_field_sep void countWords concode_elem_sep void countWords concode_elem_sep int getWordCount concode_elem_sep void ignore concode_elem_sep void ignore concode_elem_sep int[] getFrequencies concode_elem_sep int getEntryCount concode_elem_sep String[] getWords