The Spring MVC Validation class is utilized to limit the user's input. Spring 4 and above versions support and use the Bean Validation API to validate user input. Both server-side and client-side apps may be validated using it.
Spring offers support for Java's Bean Validation API, making it easy to create validation rules instead of manually writing declaration logic in your application code.
Spring's Validator interface has a built-in validation API. Using this interface, you may bundle your validation logic into a class that verifies the target object.
The validate method takes an Errors object in addition to the target object, which is used to gather any validation errors that may arise.
ValidationUtils is a Spring-supplied utility class with methods for calling other validators, checking for common mistakes like empty strings, and reporting errors to the specified Errors object.
Spring simplifies our life by including built-in validations such as @NotNull @NotBlank @Size @Min.