Java ArrayList - Return ArrayList

Basically I have two snippets of code. One calls a function that populates and returns an ArrayList, but I am having some issues. Here are the two codes:

1. Defining the receiving ArrayList, then catching the returning ArrayList.

 ArrayList<String> agentArray = new ArrayList<>();
 agentArray = agentListings(strInput);

1. Building the ArrayList then returning it.

   public static ArrayList agentListings(String strInput) throws FileNotFoundException {
        File inputFile = new File(strInput);
        Scanner in = new Scanner(inputFile);
        ArrayList<String> agentArray = new ArrayList<>();

        while (in.hasNextLine()) {
            agentArray.add(in.next());
            in.next();
            in.next();
            in.next();
        }

        Collections.sort(agentArray);
        in.close();
        return agentArray;
    }

Problem is when I get back to where I am trying to put it into an ArrayList once returned, it seems to work fine. But when I try and write it to a file, it throws this error from this code.

out.write(agentArray.get(1));

I am writing to a file with out being a bufferedwriter which works with simple text and such.

Basically I cant figure out how to write the ArrayList "agentArray" to the file. Any obvious error's am I doing?

==============================================

EDIT: Forgot to include the error. When i hover over the out.write(agentArray.get(1)); the agentArray gets underlined in red and the error is

cannot find symbol symbol: varible agentArray
location: class blabla.blabla