String[] wordList = fileContents.split("\s");

        ArrayList<String> words = new ArrayList<String>();
        ArrayList<Integer> counts = new ArrayList<Integer>();
        words.add(wordList[0]);
        counts.add(0);
        for (int i = 0; i < wordList.length; i++) {
            String tempWord = wordList[i];
            boolean foundEqual = false;
            int count = 0;
            for(int q = 0;q < words.size();q++) {
                if (tempWord.equals(words.get(q))) {
                    foundEqual = true;
                    counts.add(q, counts.get(q) + 1);
                }

            }
            if(!foundEqual){
                words.add(tempWord);
                counts.add(1);
            }

        }
        for (int i = 0; i < words.size(); i++) {
            System.out.println(words.get(i) + ":" + counts.get(i));
        }

this is a test
this is also a test
this is the last test

this:3
is:3
a:2
test:3
also:2
the:2
last:2

counts.add(q, counts.get(q) + 1)

words.add(wordList[0]);
    counts.add(0);

words.add(wordList[0]);
    counts.add(0);

counts.add(0,1)

i = 1

i = 1