Question

I thought when a class implements an interface, it is saying that it “Can do” whats defined in the interface.I am also under impression that “Is a” or “Type of” notation is for class hierarchy, meaning a class inheriting from superclass. Is my understanding correct?

Answer 1

From the title Question I would say no.

There have been answers saying yes and showed this by using instanceof, however when reading the Java language specification it states.

two reference types are the same run-time type if:
They are both class or both interface types, are defined by the same class loader, and have the same binary name

And a class implementing an interface won’t receive the binary name of the interface.