Errors while reading files

Question

I made a method to read the txt file that was created in another method. After long receiving the Numberformatexception, I managed to eliminate it but the method still does not send name and time to my class Playorranking. After a few tests I see that lerRanking is not correctly storing the contents of the two variables, I just don’t know why.

This method writes txt:

try {
        if (!arquivo.exists()) {
            arquivo.createNewFile();
        }
        FileWriter fw = new FileWriter(arquivo, true);
        BufferedWriter escrever = new BufferedWriter(fw);
        escrever.write(nome);
        escrever.newLine();
        escrever.write(tempo);
        escrever.newLine();
        escrever.close();
        fw.close();
    } catch (IOException ex) {
        System.out.println(ex.getMessage());
    }
}

}

And this method would read the file and return the name and time:

public static JogadorRanking lerRanking(String arquivo) throws IOException {
    fileR = new FileReader(arquivo);
    buffR = new BufferedReader(fileR);
    JogadorRanking ranking = new JogadorRanking("", 0);
    String linha = buffR.readLine();
    while (linha != null) {
        String nome = linha;
        linha = buffR.readLine();
        int tempo = Integer.parseInt(linha);
        ranking.adicionaJogador(nome, tempo);
        linha = buffR.readLine();
    }
    Collections.sort(ranking.getDadosRanking());
    return ranking;
}

Here the class Jogadorranking (a little summed up, obvious), which I use to sort the ranking:

public JogadorRanking(String nome, int tempo) {
    this.nome = nome;
    this.tempo = tempo;
}
public void adicionaJogador(String nome, int tempo) {
    dadosRanking.add(new JogadorRanking(nome, tempo));
}
public String retornaJogador() {
    String dados ="";
    for(JogadorRanking jogador: dadosRanking) {
        dados+=jogador.retornaNome()+" "+jogador.retornaTempo()+"\n";
    }
    return dados;
}

Although there are no mistakes, when I call on main to print the return Player()[that returns the names and times of the players in the list], nothing appears. If I try to make a . lerRanking("..."). getName and getTempo, the name comes out empty and time 0. Could someone please tell me where I’m going wrong?