What are custom Spring annotations and how do I create one?

What are custom Spring annotations and how do I create one?

Custom Spring annotations are user-defined annotations that can be used to add metadata to your Spring components. To create one, you define an annotation interface and use it with Spring's annotation processing.

Can you give me an example of a custom annotation?

Sure! For instance, you can create a @LogExecutionTime annotation that you can apply to methods to log their execution time.

How do I implement the logic for this annotation?

You would typically use an aspect with Spring AOP. Create an aspect that intercepts methods annotated with @LogExecutionTime and logs the execution time.

What dependencies do I need for Spring AOP?

You need to include the Spring AOP dependency in your pom.xml or build.gradle file, depending on your build tool.