Given the code fragment:
Which set of class definitions compiles?
Given the code fragment:
Which set of class definitions compiles?
The correct answer is D. In Java, a sealed interface explicitly lists the permitted subclasses or implementing classes. The permitted subclasses or implementing classes must be declared as either sealed, non-sealed, or final. In the provided code fragment, since SInt is a sealed interface, any class or interface that extends or implements SInt must declare whether it is sealed, non-sealed, or final. Option D correctly shows that both interfaces Story and Art extend SInt and are marked as non-sealed, which is necessary to compile without errors.
Right option is D.
Right answer is D
Right answer is D. E is missing "sealed", "non-sealed" or "final" modifier.
The right option is D. non-sealed interface Story extends SInt {} non-sealed interface Art extends SInt {}, because the class in option E require an modifier
D is correct, Sealed interface allows sealed, non-sealed interface extends it.
if option E is like: E. non-sealed interface Story extends SInt {} non-sealed class Art implements SInt {} , in this case should select the E
D is the correct answer non-sealed opens up for any class to implement
D is correct