用于标记字符串的StringTokenizer对象

import java.util.Scanner;

import java.util.StringTokenizer;

/** 
来 自 
n o w    j a v a  . c o m
**/

public class Main 

{

   // execute application

   public static void main(String[] args)

   {

      // get sentence

      Scanner scanner = new Scanner(System.in);

      System.out.println("Enter a sentence and press Enter");

      String sentence = scanner.nextLine();


      // process user sentence
      /* 
      *来 自
       时 代      J a v a   公   众 号 - nowjava.com
      */

      String[] tokens = sentence.split(" ");

      System.out.printf(