Spring Framework FAQ: Top Questions

You can create custom annotations in Spring by defining a Java annotation and configuring a handler or aspect to respond to it.

🗺️ Steps:

1. Create the annotation using @interface.
2. Use it on classes/methods and process it using AOP or meta-annotations.

📥 Example:

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Auditable {
}

@Aspect
@Component
public class AuditAspect {
  @Before("@annotation(Auditable)")
  public void audit() {
    System.out.println("Audit log recorded");
  }
}

🏆 Expected Output:

Method calls with @Auditable are logged before execution.

🛠️ Use Cases:

• Audit trails, performance monitoring.
• Reusability and semantic decoration of business logic.