JSF :: How To Read CSV File From User Defined Directory Path For Loading To Managed Bean

I'm using a PrimeFaces UploadedFile xhtml page to select a csv file to read and write using a managed bean (SuperCSVParser.java). The file is read and written to an entity class which then persists the data to a database. The application works fine if I specify a file path on the physical server and select a csv file on that file path. But for the production version I want the user to select ANY file name from ANY directory on their local system.

I know about the FacesContext methods and I've looked at some methods from the java.io File class. Most of these methods are about getting the path from the server, where I want to 'pass' the path String from the client machine to allow the uploaded file to go through. When I try with the below code I get:

java.io.FileNotFoundException: data.csv (The system cannot find the file specified)

I'd like to know what I'm doing as I prefer not to explicitly declare a path in the final app. I'm almost sure that's possible.

<h:form enctype="multipart/form-data">
<p:fileUpload value="#{SuperCsvParser.file}"
mode="simple"
auto="true"

[Code].....