Write a program to count total number of words in a string using library function and regular expression.

package com.javahelp.stringprog;

import java.util.Scanner;

public class WordCount2 {

public static void main(String[] args) {

Scanner sc=new Scanner(System.in);

String s=sc.nextLine(); // enter the string

String []arr=s.split("[\\S][ ]+");    // \S shows except space

System.out.println(arr.length);
}
}