Java文件倒读

1，文件输入流

File file = new File("需要读取文件路径");
 
BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(file)));

2，写入内存

List<String> lines = new ArrayList<>();
   try {
      String line;
      while ((line = br.readLine()) != null) {
             lines.add(line);
      }
  } catch (Exception e) {
            e.printStackTrace();
  }

3，反转集合

Collections.reverse(lines);

4，遍历读取集合：略