如何计算每个单词出现的次数？

    Map<String, Integer> countByWords = new HashMap<String, Integer>();    Scanner s = new Scanner(new File("your_file_path"));    while (s.hasNext()) {        String next = s.next();        Integer count = countByWords.get(next);        if (count != null) { countByWords.put(next, count + 1);        } else { countByWords.put(next, 1);        }    }    s.close();

这个数字“我是”只是一个字