Interface Vs Inheritance test

What will happen?

• Compiles successfully

• Compile error due to ambiguity

• Runtime error

• Must implement twice

What will happen when class C implements both interfaces A and B, each having a default method with the same signature?

• The compiler will throw an error due to ambiguity.

• The default method from interface A will be used.

• The default method from interface B will be used.

• The class C will inherit both methods.

How do you FIX the error in Question 2?

• Use super.speak() directly

• Delete one interface

• Override speak() in class C

• Use extends instead of implementation

What will happen?

• Compiles successfully

• Compile-time error

• Runtime error

• It prints both A and B

Which is the correct syntax?

• Class Dog extends Animal implements Pet, Guard

• Class Dog implements Pet extends Animal

• Class Dog extends Animal, Pet

• Class Dog implements Animal, Pet