1Z0-819 Annotations 5

Question 1

What is the effect of applying @Deprecated to an API element in Java 11?

Accepted Answer

The compiler emits a warning when the element is used, and it appears in Javadoc as deprecated

Answer

@Deprecated causes the compiler to issue a deprecation warning at use sites and marks the element in Javadoc.

Question 2

In Java 11, @Deprecated gained which additional element to indicate that the deprecated API may be removed in a future release?

Accepted Answer

forRemoval = true

Answer

The forRemoval=true element, added in Java 9, signals that the deprecated API is planned for future removal and triggers an even stronger compiler warning.

Question 3

Which statement about annotation inheritance is accurate?

Accepted Answer

@Inherited only works for class-level annotations, not method-level ones

Answer

@Inherited only propagates class-level annotations from superclass to subclass; it does not apply to interface implementations or method-level annotations.

Question 4

Which of the following annotation element types allows you to embed one annotation type inside another?

Accepted Answer

Another annotation type

Answer

An annotation element can itself be another annotation type, enabling composition of annotations.

Question 5

What compile-time error occurs when you use @Override on a method that does not actually override a superclass or interface method?

Accepted Answer

Compile error: method does not override or implement a method from a supertype

Answer

@Override causes a compile-time error if the annotated method doesn't match any method signature in a superclass or implemented interface.

(1Z0-819) Oracle Java SE 11 Developer Practice Test

(1Z0-819) Oracle Java SE 11 Developer Practice Test

1Z0-819 Annotations 5