Count word in java

package com.swain.cell;

import java.util.StringTokenizer;

public class CountWords {

/**

 * @param args

 */

public static void main(String[] args) {

// TODO Auto-generated method stub

        String st="how to count word in java?";

        int count=0;

        StringTokenizer stk=new StringTokenizer(st," ");

        while(stk.hasMoreTokens()){

            String token=stk.nextToken();

            count++;

        }

        System.out.println("Number of words are: "+count);

}

}