浅谈Java几种文件读取方式耗时

    public static String ReadFileByBufferReaderToString(String path) {
        if (TextUtils.isEmpty(path)) {
            return "";
        }
        StringBuilder stringBuilder = new StringBuilder();
        try (BufferedReader bufferedReader = new BufferedReader(new FileReader(path))) {
            String tempStr;
            while ((tempStr = bufferedReader.readLine()) != null) {
                stringBuilder.append(tempStr).append(System.lineSeparator());
            }
        } catch (ioException e) {
            e.printStackTrace();
        }
        return stringBuilder.toString();
    }

    public static String ReadFileByBufferReaderToStringUseString(String path) {
        if (TextUtils.isEmpty(path)) {
            return "";
        }
        String result = "";
        try (BufferedReader bufferedReader = new BufferedReader(new FileReader(path))) {
            String tempStr;
            while ((tempStr = bufferedReader.readLine()) != null) {
                result += tempStr;
            }
        } catch (IOException e) {
            e.printStackTrace();
        }
        Log.i(TAG, "ReadFileToString: read success ");
        return result;
    }

    @Requiresapi(api = Build.VERSION_CODES.O)
    public static String ReadFileByReadAllBytesReaderToString(String path) {
        if (TextUtils.isEmpty(path)) {
            return "";
        }
        String result = null;
        try {
            result = new String(Files.readAllBytes(Paths.get(path)));
        } catch (IOException e) {
            e.printStackTrace();
        }
        return result;
    }

    @RequiresApi(api = Build.VERSION_CODES.O)
    public static String ReadFileByByFilesReadLinesToString(String path) {
        if(TextUtils.isEmpty(path)){
            return "";
        }
        StringBuilder stringBuilder = new StringBuilder();
        try (Stream<String> stream = Files.lines(Paths.get(path))) {
            stream.forEach(new Consumer<String>() {
                @Override
                public void accept(String s) {
                    stringBuilder.append(s);
                }
            });
        } catch (IOException e) {
            e.printStackTrace();
        }
        return stringBuilder.toString();
    }

   public static String ReadFileByCommonIOReadFileToString(String path) {
        if (TextUtils.isEmpty(path)) {
            return "";
        }
        try {
            return FileUtils.readFileToString(new File(path), Charset.defaultCharset());
        } catch (IOException e) {
            e.printStackTrace();
        }
        return "";
    }