Home » Oracle » 1z0-803 » Which three implementations are valid?
Given the code fragment:
interface SampleClosable {
public void close () throws java.io.IOException;
}
Which three implementations are valid?
A. Option A
B. Option B
C. Option C
D. Option D
E. Option E
Correct Answer: ACE
Explanation/Reference:
Explanation:
A: Throwing the same exception is fine.
C: Using a subclass of java.io.IOException (here java.io.FileNotFoundException) is fine
E: Not using a throw clause is fine.
Incorrect answers:
B: Exception is not a subclass of java.io.IOException and cannot be used here.
D: Not extends. SampleCloseable cannot be the superclass of Test, a superclass must be a class. (An interface extends other interfaces.)
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