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Asked: 2026-05-11T12:16:26+00:00

I want to implement an intialization mechanism that is annotation-based in Java. Specifically, I

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I want to implement an intialization mechanism that is annotation-based in Java. Specifically, I have an annotation I’ve defined:

@Retention(RetentionPolicy.RUNTIME) @Target(ElementType.METHOD) public @interface Initialization {  /**  * If the eager initialization flag is set to <code>true</code> then the  * initialized class will be initialized the first time it is created.  * Otherwise, it will be initialized the first time it is used.  *   * @return <code>true</code> if the initialization method should be called  *         eagerly  */ boolean eager() default false;  }

Additionally, I have an interface:

public interface SomeKindOfBasicInterface {}

I want to find every implementation of the SomeKindOfBasicInterface class on my classpath that has the @Initialization annotation on a method. I’m looking at Spring’s MetaDataReader tools, which look like the best way to defer loading the other SomeKindOfBasicInterface implementations while I’m doing this… but I’m not sure how to do a search like I’m describing. Any tips?

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1 Answer

  1. You could use Reflections, which is a Java runtime metadata analysis tool. I’ve used it to get all subtypes of a given type, but it can handle your case as well.

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