WordCount非MapReduce,用java代码实现

public static void main(String[] args) throws Exception {
        BufferedReader br = new BufferedReader(new FileReader(""));
        Map<String, Integer> map = new HashMap<String, Integer>();
        String line=null;
        while ((line=br.readLine())!=null){
            String[] split = line.split(" ");
            for (String key:split ) {
                if (map.containsKey(key)){
                    Integer value = map.get(key);
                    value++;
                    map.put(key,value);
                }else{
                    map.put(key,1);
                }
            }
        }
    }