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Dúvida Java - JOptionPane

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import java.util.*;
import java.lang.System.*;
import java.util.ArrayList;
import javax.swing.JOptionPane;

public class Trabalho {

     public static void main(String[] args) {

// Criação da ArrayList - Jogos
ArrayList Jogos = new ArrayList();
JOptionPane.showMessageDialog("Tamanho da ArrayList: "+Jogos.size);



Observações: Boas pessoal, está-me a dar erro a listar o tamanho da arraylist no joptionpane, alguém pode ajudar ? Thanks.


João Santos

João Santos

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