单机wordcount

package com.util;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.InputStreamReader;
import java.util.*;

/**
 * Created by jinxin11 on 2017/2/6.
 */
public class WordCount {

    //排序方法
    public static <K, V extends Comparable<V>> TreeMap<K, V> sortByValues(
            final Map<K, V> map) {
        Comparator<K> valueComparator = new Comparator<K>() {
            public int compare(K k1, K k2) {
                int compare = map.get(k2).compareTo(map.get(k1));
                if (compare == 0)
                    return 1;
                else
                    return compare;
            }
        };
        TreeMap<K, V> sortedByValues = new TreeMap<K, V>(valueComparator);
        sortedByValues.putAll(map);
        return sortedByValues;
    }

    public static void main(String[] args) {
        try {
            Map<String,Integer> map = new HashMap();
            //读取文件
            File file = new File("C:\Users\jinxin11\Desktop\wordcount.txt");
            if (file.isFile() && file.exists()) {
                InputStreamReader read = new InputStreamReader(new FileInputStream(file));
                BufferedReader bufferedReader = new BufferedReader(read);
                String lineTXT = null;
                while ((lineTXT = bufferedReader.readLine()) != null) {
                    //以空格切割每行数据
                    String[] lines = lineTXT.split(" ");
                    //将单词和单词计数放入map
                    for (String str : lines) {
                        if (map.containsKey(str)) {
                            map.put(str, map.get(str) + 1);
                        } else {
                            map.put(str, 1);
                        }
                    }
                }
                read.close();
                //对map进行排序
                TreeMap<String, Integer> treeMap = sortByValues(map);
                System.out.println(treeMap);
                System.out.println(treeMap.firstKey());
            }else{
                System.out.println("找不到指定的文件！");
                }
            } catch (Exception e) {
                System.out.println("读取文件内容操作出错");
                e.printStackTrace();
            }
         }
}