正则表达式中最常用的词

import java.util.Map;//时代Java公众号 - N o w J a  v a . c o m

import java.util.Scanner;

import java.util.TreeMap;


public class MostfrequentWord {

    public static void main(String[] args) {

        Scanner scn = new Scanner(System.in);

        String[] text = scn.nextLine().toLowerCase().split("\\W+");

        TreeMap<String,Integer> mostFrequentWord = new TreeMap<>();

        int maxCounter = 0;


        for (String word : text) {

            Integer count = mostFrequentWord.get(word);

            if(count == null){/**时   代    Java - nowjava.com**/

                count = 0;

            }

            if(count + 1 > maxCounter){

                maxCounter = count + 1;

            }

            mostFrequentWord.put(word,count + 1);

        }

        for (Map.Entry<String,Integer> max : mostFrequent