Exam 1z0-819 topic 1 question 42 discussion

Actual exam question from Oracle's 1z0-819

Question #: 42
Topic #: 1

[All 1z0-819 Questions]

Which declaration of an annotation type is legal?

A. @interface Author {
String name() default “”;
String date();
}
B. @interface Author extends Serializable {
String name() default “”;
String date();
}
C. @interface Author {
String name() default null;
String date();
}
D. @interface Author {
String name();
String date;
}
E. @interface Author {
String name();
String date default “”;
}

Show Suggested Answer

Suggested Answer: A 🗳️

by RP384 at Feb. 8, 2023, 1:15 a.m.

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ASPushkin

10 months, 2 weeks ago

Selected Answer: A

You cannot use a null reference as a value for an element in an annotation. No parentheses on the date annotations cannot subclass one another, and an annotation is not allowed to extend/implement any interfaces

upvoted 1 times

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[Removed]

1 year, 10 months ago

Selected Answer: A

A is correct

upvoted 1 times

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Stavok

1 year, 11 months ago

Selected Answer: A

A. @interface Author { String name() default ""; String date(); } is a legal declaration of an annotation type. It defines an annotation type named Author with two elements: name and date. The name element has a default value of an empty string, while the date element has no default value.

upvoted 2 times

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RP384

2 years, 4 months ago

Selected Answer: A

A is correct

upvoted 1 times

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