Exam 1z0-819 topic 1 question 133 discussion

Tested AC

A. An interface declaration: Yes, the @Resource annotation can be applied to an interface because interfaces are considered types in Java. B. A local variable declaration: No, the @Resource annotation cannot be applied to local variables because they are not considered types. C. A class declaration: Yes, the @Resource annotation can be applied to a class because classes are considered types in Java. D. A method declaration: No, the @Resource annotation cannot be applied to methods because they are not considered types. E. A field declaration: No, the @Resource annotation cannot be applied to fields because they are not considered types.

A & C: The @Target annotation is used to specify the kinds of program element to which an annotation type is applicable. In this case, @Target(TYPE) means that the @Resource annotation can be applied to any type declaration. In Java, a type declaration is any class, interface, enum, or annotation type declaration. Therefore, the @Resource annotation can be applied to an interface declaration (option A) and a class declaration (option C). The @Resource annotation cannot be applied to a local variable declaration (option B), a method declaration (option D), or a field declaration (option E) because these are not type declarations.

A & C See: https://www.geeksforgeeks.org/java-target-annotations/

The @Resource annotation is used to identify a class, field, or method that upon initialization, the resource will be injected. For a class-based @Resource, the "resource is looked up by the application at runtime"

A and C. @Target(TYPE) can be applied to Interface, class or enum.

Straight from oracle.docs = Class, interface (including annotation type), or enum declaration

C,D,E Resource annotation is used to declare a reference to a resource; @Resource can decorate a class, a field, or a method.