Delimiter Function And Number Of Words In String

Working on my java skills. The is Delimiter function is suppose to return true if there is a delimiter in the string and false otherwise. The main is suppose to call this function and count the number of words in the string:

Here is what I came up with:

import java.util.*;
 public class NumberOfWordsInString {
public static void main (String[] args){
Scanner in= new Scanner (System.in);
String s;

[Code] ....

Somehow my method isn't being successfully called by my main and the following error msg was received:

Exception in thread "main" java.lang.Error: Unresolved compilation problems:

length cannot be resolved or is not a field

The method isDelimiter(char) in the type NumberOfWordsInString is not applicable for the arguments (char[])

at javaimprovements.NumberOfWordsInString.main(Number OfWordsInString.java:10)

line 10:
char ch [] = new char [s.length];

and the main doesn't call the isDelimiter function