Bonus task | Lesson 12 | Level 12

:)))

Only if you leave method unimplemented with no body

Yah you're right about those other tasks, they're easy only if you understand the concepts of OOP very well

Did you mean Class instead of method?

no, method. But I anyways misspoke. I am actually currently in a discussion with Guadalupe, where he's trying to explain to me why interfaces are worth existing. I'm sorry, I simply don't see the point of including an empty file, and then code the methods myself in my class. Implementing an interface with methods that already has code: now THAT makes sense. Imagine you need to include an empty header file with no variables ? How much sense does that make. And then the IDE forces you to "override" those non-existing variables and declare them in your own class. That's what interfaces mean to me at this point in time. Having said that: I do also understand that I still have a lot to learn.

Yeah I kind of don't see the point outside of java 8's default method feature. Maybe for a strange bit of organization/readability? I am really out of my depth here though.

https://codegym.cc/groups/posts/101-why-interfaces-are-necessary-in-java

Once you get into an enterprise app you will fall in love with interfaces

They are handy when you need to iterate over a collection of objects and interrogate their runtme TYPE (object.class.TYPE/object.getClass().TYPE) and then the notion of tagging interfaces (that themselves have no methods) becomes clear, since an object's class is of type == its interface(s) TYPE. This is just one example of interface uses, and does not even scratch the surface of things where the interface(s) have methods, abstract or concrete.

The way I make sense of them at this early stage is to see the benefit of consistency. All TV's that have a remote control, contain standard buttons eg. change channel, volume up, mute etc. We create an interface called RemoteControlButtons. The button don't do anything yet (empty methods) but when we create a new remote control for a specific manufacturer of TV. We implement the interface and provide methods that tell that remote how to change channel, volume up, mute.

Here https://www.geeksforgeeks.org/generics-in-java/ :)