java - Is a class that implements an interface also an interface? -

java - Is a class that implements an interface also an interface? -

i under impression when class implements interface implementing abstract methods, hence making them usable, non-abstract, methods. boss contends class implements interface interface. not create sense me. class implementing interface not abstract , not labelled interface. can give input on this?

a class not interface.* doesn't alter because class implements interface.

however, instance of class implements interface, instance of interface.

the big difference, , 1 seems miscommunicated here, difference between classes , objects.

let's have code:

public interface animal { } public class dog implements animal { public static void main() { animal rover = new dog(); } }

there things can , can't relationship between stuff defined here.

we can (assuming "is (a/an)" short "is instance of"):

"a dog animal." "rover dog." "rover animal." "dog (subtype/subclass/implementation) of animal." "dog (presents/provides/implements) interface."*

we can not say:

"dog interface." (no, dog class.)* "dog animal." (see above. note difference between "dog" , "a dog".)

* semantic pov, argued every class interface. argument has nil interface keyword; relies on traditional definition of word. , apply all classes, regardless of whether class implements someinterface.

java class interface