Spring Boot custom Validation example

Data validation is very important. It conforms to the expected format, type, range, and business rules, as well as identify and prevent errors, inconsistencies, and fraud. When we need to perform data validation that cannot be handled by the built-in validation annotations provided by Spring Framework, we can use custom validation to define our own rules and constraints. In this tutorial, I will show you how to implement custom Validation annotation in Spring Boot example (with Rest API).

More Practice:
Spring Boot Validation annotations
Spring Boot Login and Registration example
Spring Boot 3 Rest API CRUD example
Spring Boot @ControllerAdvice & @ExceptionHandler example
Spring Boot Unit Test for Rest Controller
– Documentation: Spring Boot Swagger 3 example
– Caching: Spring Boot Redis Cache example

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