A NetflixFileReader class that handles reading the provided data file. For each line of the file, a new Media
object (either Movie or Series) should be created and added to a list of Media objects. This class should include
a method that returns the finished list.

You just copy/pasted your assignment without even a moment taken to explain what help you need. That's highly disrepestectful to the many people who give their time to help others here.

There are lots of people here who will freely give their time to help you become the best Java programmer you can be. There's nobody here who is interested in helping you cheat or doing your homework for you.

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Post what you have done so far and someone will help you from there.