10.27

            // 创建BufferedReader对象读取文件内容
            BufferedReader reader = new BufferedReader(new FileReader(filePath));
            String line;
            Map<String, Integer> wordCountMap = new HashMap<>();

            // 逐行读取文件内容并统计单词出现次数
            while ((line = reader.readLine()) != null) {
                String[] words = line.split("\\s+");

                for (String word : words) {
                    if (!word.isEmpty()) {
                        wordCountMap.put(word, wordCountMap.getOrDefault(word, 0) + 1);
                    }
                }
            }


            PriorityQueue<Map.Entry<String, Integer>> pq = new PriorityQueue<>((a, b) ->
                    b.getValue().compareTo(a.getValue()));

            for (Map.Entry<String, Integer> entry : wordCountMap.entrySet()) {
                pq.offer(entry);
            }
            Scanner scanner = new Scanner(System.in);
            System.out.print("请输入前N个单词的数量：");
            int n = scanner.nextInt();
            BufferedWriter writer = new BufferedWriter(new FileWriter(outputFilePath));
            for (int i = 0; i < n && !pq.isEmpty(); i++) {
                Map.Entry<String, Integer> entry = pq.poll();
                String word = entry.getKey();
                int count = entry.getValue();
                System.out.println("Word: " + word + ", Count: " + count);
                writer.write("Word: " + word + ", Count: " + count);
                writer.newLine();
            }
            writer.close();
            reader.close();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
}
并进行了javaweb的增删改查的学习