Почему не пропускает если решать через FileWriter ??? Вот бл... в чем разница если все файлы текстовые???

BufferedWriter writer = new BufferedWriter(new OutputStreamWriter(new FileOutputStream(allFilesContent)));
        for (File file:lf) {
            BufferedReader reader = new BufferedReader(new InputStreamReader(new FileInputStream(file)));
            while (reader.ready())
                writer.write(reader.read());
            writer.write("\n");
            reader.close();

        }

        writer.close();

        /*for(File f: lf){
            BufferedReader bufferedReader = new BufferedReader(new FileReader(f));
            while (bufferedReader.ready()){
              writer.write(bufferedReader.readLine());
            }
            writer.write("\n");
            bufferedReader.close();
        }
        writer.close();*/