When are Java annotations executed?

Question

I am just looking to write some annotation which can execute at runtime, before or immediately after a service method is invoked.

I don\'t know if they are executed at r

Answer 1

Actually, when you define an annotation, you must specify the parameter @Retention, which defines whether the annotation is available in the source code (SOURCE), in the class files (CLASS), or at run time (RUNTIME).

@Retention(RetentionPolicy.RUNTIME)
public @interface MyAnnotation {}