Spring Full-Stack Practical Cases

Sep 20, 2025 · Backend Development

Mastering Spring Boot Validation: From Annotations to Programmatic Validators

This article explains how Spring Boot 3.4.2 supports both annotation‑based and programmatic validation, demonstrates when to choose each approach, provides step‑by‑step custom validator implementations for Employee and Department entities, and shows how to integrate these validators with Spring MVC controllers.