程序包 java.lang.annotation

注释类型 Retention

@Documented
@Retention(RUNTIME)
@Target(ANNOTATION_TYPE)
public @interface Retention

Indicates how long annotations with the annotated type are to be retained. If no Retention annotation is present on an annotation type declaration, the retention policy defaults to RetentionPolicy.CLASS.

A Retention meta-annotation has effect only if the meta-annotated type is used directly for annotation. It has no effect if the meta-annotated type is used as a member type in another annotation type.

从以下版本开始:

1.5

必需元素概要

所需元素

限定符和类型	必需的元素	说明
RetentionPolicy	value	Returns the retention policy.

元素详细资料

value

RetentionPolicy value

Returns the retention policy.

返回:

the retention policy