Exam 1z0-816 topic 1 question 4 discussion

A allowed D the equals different signature to Object class equals

Allowed with private methods in interfaces if implemented. Allowed with static methods (private and public) if implemented.

D is the correct answer because D got only one abstract method A is a compilation error because only static and default method can be none abstract in an interface B Be could not be used in lambda expression because B got two abstract methods C is a compilation error because static methods in interface could never be abstract. They need to be implemented in the interface E is a compilation error because only static and default methods could be implemented in an interface