Дописываем в файл и читаем из файла запись

fileReaderAndWriter.java

    private static void write() throws FileNotFoundException, UnsupportedEncodingException {
        PrintWriter printWriter = new PrintWriter(new OutputStreamWriter(
                new FileOutputStream(file, true), "UTF-8"));
        Scanner scanner = new Scanner(System.in);
        String line;
        while (true) {
            line = scanner.nextLine();
            if ("--stop".equals(line)) break;
            printWriter.println(line);
        }
        printWriter.close();
    }

private static void read() throws IOException {
BufferedReader reader = new BufferedReader(new FileReader(file));
        String line;
        while ((line = reader.readLine()) != null){
            String[] arr = line.split(" ");
            String firstName = arr[0];
            String secondName = arr[1];
            String age = arr[2];
        }
        reader.close();
    }