CSV parsing coding challenge

Congratulations! You made it to the eBay Kleinanzeigen remote coding challenge, where we want to see your hands-on coding skills.

Steps

1. Check installation prerequisites: JDK version >=17, Maven latest version, your preferred IDE/editor. To see that everything basic is working, execute mvn verify, it should show you a SUCCESS build.
2. Read carefully through "Requirements" and "Out-of-scope" to focus on the right things.
3. IMPORTANT: After finishing coding, please add your comments and remarks inside this README.md file, see end of file. It helps us gaining context on how you reflect on the coding task.
4. Send back the result as mentioned inside the coding challenge mail

Coding guidance: Combine "clean, object-oriented code" with "working software".

Requirements

• Take address-book.csv as data-source and parse it programmatically with Java. Do NOT use a csv parsing library, but code it on your own. You can focus to parse based on existing .csv file, no need to cover whole csv standard.
• Printout the result of How many females are in the address book?
• Printout the result of Who is the oldest person in the address book?
• Printout above results inside exercise.Main.main().
• Ideally you write a few unit tests inside exercise.AddressBookServiceTest.java.
• Don't feel constrained to Main.java or CSVTest.java. You can structure, create further classes and rename things as you like.

Out-of-scope

• NO need to be Maven expert or adapt build, project harness and build is setup already.
• NO Javadoc necessary. Tests and self explaining code is sufficient.

Your comments / remarks

What would you do if you had more time? Which trade-offs did you take?

• add a check to see if the file exists before reading it, throw a readable exception otherwise
• add validation checks for the received string from the file

Have fun!