int lettersCount = 0;
ArrayList<String> oddWords = new ArrayList<String>();
ArrayList<String> evenWords = new ArrayList<String>();

String line = reader.readLine();
while (line != null) {
    for (String word : line.split(" ")) {
        int wordLength = word.length();
        if (wordLength % 2 == 0) {
            evenWords.add(word.toUpperCase());
        } else {
            evenWords.add(word.toUpperCase());
        }
        lettersCount += wordLength;
    }
    line = reader.ReadLine();
}

int oddWordCount = oddWords.size();
int evenWordCount = evenWords.size();
int wordCount = oddWordCount + evenWordCount;