Java Beginner - Counting number of words in sentence

Question

I am suppose to use methods in order to count number of words in the a sentence. I wrote this code and I am not quite sure why it doesn\'t work. No matter what I write, I on

Answer 1

Use this method to calculate the number of words in a String:-

    private int calculateWords(String s){

    int count=0;

    if(s.charAt(0)!=' ' || s.charAt(0)!=','){

        count++;

    }

    for(int i=1;i