Collections Data Structure C#

using System;
using System.Collections;
class CollectionsDemo {
    public static void Main(String[] args) {
        ArrayList PokerPlayers = new ArrayList(3);
        PokerPlayers.Add("J");
        PokerPlayers.Add("M");
        PokerPlayers.Add("A");
        PokerPlayers.Add("J");
        foreach (String Player in PokerPlayers) {
            Console.WriteLine(Player);
        }
        PokerPlayers[0] = "A";
        System.Console.WriteLine(PokerPlayers[0]);
    }
}