int cuenta = 0;
        try (Scanner fichero = new Scanner(new BufferedReader(new FileReader("poema.txt")))) {
            while (fichero.hasNext()) {
                String token = fichero.next();
                cuenta++;
            }
        } catch (IOException ex) {
            System.err.println("Excepción de lectura");
            ex.printStackTrace();
        }
        System.out.format("Palabras %d%n", cuenta);