public static int countWords(String s){

    int counter = 0;

    boolean word = false;
    int endOfLine = s.length() - 1;

    for (int i = 0; i < s.length(); i++) {
        // if the char is letter, word = true.
        if (Character.isLetter(s.charAt(i)) == true && i != endOfLine) {
            word = true;
            // if char isnt letter and there have been letters before (word
            // == true), counter goes up.
        } else if (Character.isLetter(s.charAt(i)) == false && word == true) {
            counter++;
            word = false;
            // last word of String, if it doesnt end with nonLetter it
            // wouldnt count without this.
        } else if (Character.isLetter(s.charAt(i)) && i == endOfLine) {
            counter++;
        }
    }
    return counter;
}

int CountWords (String in) {
   String[] words = in.split(" "); //separate string around spaces
   return words.length();
}