Accessing ArrayList Of Another Class

What I want to do is this, this is my first class:

public class Footballer {
int goals;
String surname= "";
String team="";
private static int counter=0;
private int dres;
}

(this is just the header of the class... And this is my second class, which contains an ArrayList of the first class:

public class FootballTeam{
String teamname="";
String league="";
ArrayList<Footballer> f;
}

And this is my third class which contains an ArrayList of the second class:

public class FootballLeague{
String leaguename="";
ArrayList<FootballTeam> ft;
}

What I want to do is, know how many of footballers are there in the league? Meaning how many of "f"s are in the "ft"... I remember from C++ it was easy, you just did it something like this: ft.f[i]; (where i is a position), then you'd go through each of them, if you wanted to do something with them, or just ask for it's length, if you needed to know how much footballers are there.

I'm trying this method to get the size of the array in the 2nd class, from the 3rd class (containing an ArrayList of classes of 2nd class, but no luck:

int counter=0;
for(int i=0;i<this.ft.size();i++) {
counter+=this.ft[i].f.size();
}

I'm getting this: Array required, but ArrayList<FootballTeam> found ---