Learnt Java
Object Oriented Programming
Practised Continuous Integration
Learned JUnit
Used Test Driven Development
+3
To go into more depth this week, as a Friday project I designed and implemented an online store backend system in Java. 

Polymorphism, abstraction, inheritance - everything that belongs to object orientation was of course included. In addition, exceptions and optional types and user interactions were added. 

Check out the repo and feel free to give me a review. 

https://github.com/Haferkorn/ProductOrderSystem