java – 递归使用@Retention注释,它怎么可能？

甚至RetentionPolicy也设置为RUNTIME,那么如何在它未准备好运行之前执行它.

package java.lang.annotation;

@Documented
@Retention(RetentionPolicy.RUNTIME)
@Target(ElementType.ANNOTATION_TYPE)
public @interface Retention {
    /**
     * Returns the retention policy.
     * @return the retention policy
     */
    RetentionPolicy value();
}