Simple Java Code Refactor and add JUnit Test

This project is to refactor my code for a simple Java application so that I can run test unit on read/save methods. This is very simple Object serialization, all you need to do is figure out why my unit test is failing. I am only testing two classes. I have written test for one class. My budge is $10 to $30. This should take a Java developer less than 30 minutes to fix. I have attached my Unit test and my factory class. This school assignment personal project that I am building in Java, right now I am stuck in running Junit test against two simple methods. I need someone to help me look at my methods, and point out or help me fix the errors.