What is the super class for all the interfaces in

问题:

Closed. This question is not reproducible or was caused by typos. It is not currently accepting answers.

---

Want to improve this question? Update the question so it's on-topic for Stack Overflow.

Closed 6 years ago.

In java, I know that super class of all "classes" is "Object" class. My doubt is,what is the super class for all the "interfaces" in java.

回答1:

Interfaces are not classes. Therefore, an interface cannot have a superclass, and your question is essentially invalid.

• Is Interface a class?
• Is a Java interface an abstract class?

回答2:

Interfaces can extend of each other but no a super class for interfaces.