JAVA - Add to arrayList a String

Question

I'm trying to send to a ArrayList Strings that come from the user input:

private static void adicionarReserva() {
    Scanner adiciona = new Scanner(System.in);
    System.out.println("Numero da pista: ");
        int nPista = adiciona.nextInt();
    System.out.println("Numero de jogadores: ");
        int nJogadores = adiciona.nextInt();
    System.out.println("Data Inicio: ");
        String data_inicio = adiciona.next();

    Reservas reserva = new Reservas(nPista, data_inicio);
    ArrayList<Jogadores> nome_jogador = new ArrayList(); 

    for (int i=1;i<=nJogadores;i++) {
        System.out.println("Nome Jogador: ");
        String nome = adiciona.next();
        nome_jogador.add(nome);
    }

    reserva.addJogadores(nome_jogador);

}

In my Class called: Reservas, i have this:

public void addJogadores(Jogadores lista_jogadores) {
    this.lista_jogadores.add(lista_jogadores);
}

But i have this error:

nome_jogador.add(nome);

The method add(Jogadores) in the type ArrayList is not applicable for the arguments (String)

And this one:

reserva.addJogadores(nome_jogador);

The method addJogadores(Jogadores) in the type Reservas is not applicable for the arguments (ArrayList)

Any one can help me out?

Maroun · Accepted Answer · 2013-10-27 15:20:56Z

3

It's very meaningful error you're getting.

This is your ArrayList:

ArrayList<Jogadores> nome_jogador = new ArrayList(); 
          ↑

What are you trying to insert to it? a String, but it suppose to have Jogadores in it.

Now look at your addJogadores method signature:

public void addJogadores(Jogadores lista_jogadores)
                         ↑

It accepts Jogadoers object and not an ArrayList.

answered Oct 27, 2013 at 15:20

Maroun

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Comments

xorguy · Accepted Answer · 2013-10-27 15:20:27Z

0

You have to pass an instance of class Jogadores, if Jogadores has a constructor which accepts a String then:

nome_jogador.add(new Jogadores(nome));

answered Oct 27, 2013 at 15:20

xorguy

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Comments

Josh M · Accepted Answer · 2013-10-27 15:21:04Z

0

ArrayList<Jogadores> nome_jogador = new ArrayList();

You are only allowed to add objects that are an instance of Jogadores and because you are trying to add a String (which is obviously not an instance of Jogadores) it gives you an error.

answered Oct 27, 2013 at 15:21

Josh M

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Comments

yilmazburk · Accepted Answer · 2013-10-27 15:30:18Z

private static void adicionarReserva() {
    Scanner adiciona = new Scanner(System.in);
    System.out.println("Numero da pista: ");
        int nPista = adiciona.nextInt();
    System.out.println("Numero de jogadores: ");
        int nJogadores = adiciona.nextInt();
    System.out.println("Data Inicio: ");
        String data_inicio = adiciona.next();

    Reservas reserva = new Reservas(nPista, data_inicio);
    ArrayList<Jogadores> nome_jogador = new ArrayList(); 

    for (int i=1;i<=nJogadores;i++) {
        System.out.println("Nome Jogador: ");
        String nome = adiciona.next();
        nome_jogador.add(new Jogadores(nome));
    }

    reserva.addJogadores(nome_jogador);

}

In your Class called: Reservas

public void addJogadores(ArrayList<Jogadores> lista_jogadores) {
    this.lista_jogadores.addAll(lista_jogadores);
}

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