Runtime annotation processing uses the Reflection API to discover annotations on classes, methods, fields, and parameters, then act on them. This is how Spring discovers @Component beans, how JUnit finds @Test methods, and how Jackson maps @JsonProperty to JSON keys — all at runtime, without code generation.

Reading annotations via reflection
Full content is available with a subscription.
Get full access to all courses on the platform for one year with a single payment.
Unlike other platforms that charge per course, here you get everything for one price, and after one year of use there will be no automatic charge for the following year.