java.lang.annotation.Target Maven / Gradle / Ivy
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package java.lang.annotation;
/**
* Indicates the kinds of program element to which an annotation type
* is applicable. If a Target meta-annotation is not present on an
* annotation type declaration, the declared type may be used on any
* program element. If such a meta-annotation is present, the compiler
* will enforce the specified usage restriction.
*
* For example, this meta-annotation indicates that the declared type is
* itself a meta-annotation type. It can only be used on annotation type
* declarations:
*
* @Target(ElementType.ANNOTATION_TYPE)
* public @interface MetaAnnotationType {
* ...
* }
*
* This meta-annotation indicates that the declared type is intended solely
* for use as a member type in complex annotation type declarations. It
* cannot be used to annotate anything directly:
*
* @Target({})
* public @interface MemberType {
* ...
* }
*
* It is a compile-time error for a single ElementType constant to
* appear more than once in a Target annotation. For example, the
* following meta-annotation is illegal:
*
* @Target({ElementType.FIELD, ElementType.METHOD, ElementType.FIELD})
* public @interface Bogus {
* ...
* }
*
*/
@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.ANNOTATION_TYPE)
public @interface Target {
ElementType[] value();
}