Had a lecturer that taught a module on OOP where the entire module was spent teaching how to code on Java while the concept of OOP was just skimmed through at the end of the module. Okay, fine, it's just supposed to introduce OOP, maybe the continuation will go into detail.

The next semester we had the continuation module titled OOP with Java. Entire module was about Javafx. So two semesters later and everyone in the class barely understood things such as polymorphism or abstraction.