Question

Class<? extends Something>

Here’s my interpretation, it’s class template but the class ? means the name of the class is undetermined and it extends the Something class.

if there’s something wrong with my interpretation, let me know.

Answer 1

You are almost right.
Basically, Java has no concept of templates (C++ has).
This is called generics.
And this defines a generic class Class<> with the generics’ attribute being any subclass of Something.

I suggest reading up “What are the differences between “generic” types in C++ and Java?” if you want to get the difference between templates and generics.