统计文章中单词出现的次数

package com.company;
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner;
public class Demo2
{
    public static void main(String[] args)
    {
        System.out.println("请输入英文章");
        Scanner sc=new Scanner(System.in);
        String strPara=sc.nextLine();
        String[] strArray=strPara.split(" ");
        Map<String,Integer> mapwords=new HashMap<String,Integer>();
        for(String str:strArray)
        {
            if(!mapwords.containsKey(str))
            {
                mapwords.put(str,1);
            }
            else
            {
                Integer icount=mapwords.get(str);
                icount++;
                mapwords.put(str,icount);
            }
        }
        //返回一个实现Map.Entry接口的对象集合
        for(Map.Entry<String,Integer> me:mapwords.entrySet())
        {
            String strkey=me.getKey();//返回键
            Integer icount=me.getValue();//返回值
            System.out.println(strkey+"出现了"+icount+"次");
        }
    }
}