File (Directory) object problem?

Question

Hi there. My problem is as follows. The method below is supposed to access an pre-existing directory with five previously saved test files, read in those files as account objects, add the objects to an ArrayList, then return the ArrayList. It seems to be able to create a file object representing the directory alright but it then insists that there are no files in the directory! Have I fouled up or is there some subtlety that I'm unware of? I was wondering if the fact that the account files have a .bac extenstion had something to do with it.
Here's the method, with the two lines of code where I think the problem might lie in bold print:
public ArrayList retrieveAccounts()throws IOException{
ArrayList accounts = new ArrayList();
File accDir = new File("C:" + File.separator + "accounts"); //creates a directory object
//The following S.o.p statements are for test and maintenance purposes rather than user feedback
System.out.println("Directory " + accDir.getCanonicalPath() + " opened");
System.out.println("Confirm Accounts directory exists: " + accDir.exists());
System.out.println("Directory: " + accDir.isDirectory());
String [] accFiles = accDir.list(); //gets a list of files in the directory and saves it as a String array
System.out.println("Number of files in directory: " + accDir.length());
while(i < accDir.length()){
filename = accFiles;
try{
//open layered input Streams to access the next account file in line
ObjectInputStream in = new ObjectInputStream(new FileInputStream("C:"+ File.separator + "accounts" + File.separator + filename));
account = (Account)in.readObject();
accounts.add(account);
in.close(); //closes Streams for that particular file
}catch(IOException e){System.out.println("Filing error as follows: " + e);
            }catch(ClassNotFoundException e){System.out.println("Class not Found. Details: " + e); }
filename = null; //frees up reference for next file
i++;//counter increments by one
return accounts;

Answer 1

This is what I was trying to do minus the comments and maintence and test code:
public ArrayList retrieveAccounts()throws IOException{
ArrayList accounts = new ArrayList();
File accDir = new File("C:" + File.separator + "accounts");
String [] accFiles = accDir.list();
while(i < accDir.length()){
filename = accFiles;
try{
ObjectInputStream in = new ObjectInputStream(new FileInputStream("C:"+ File.separator + "accounts" + File.separator + filename));
account = (Account)in.readObject();
accounts.add(account);
in.close();
}catch(IOException e){System.out.println("Filing error as follows: " + e);
}catch(ClassNotFoundException e){System.out.println("Class not Found. Details: " + e); }
filename = null;
i++;
return accounts;
By the way, your the first Java programmer that I've met that doesn't like comments! :)
NOTE: Think I may have spotted where I went wrong in my code.
filename = accFiles;
Forgot to point it at the specific element of the array, like so:
filename = accFiles[i];
Thanks for your help!