jakarta-validation-api

import jakarta.validation.Validator; import jakarta.validation.Validation; import jakarta.validation.ConstraintViolation; import java.util.Set; public class Example { public static void main(String[] args) { Validator validator = Validation.buildDefaultValidatorFactory().getValidator(); Set<ConstraintViolation<Object>> violations = validator.validate(new Object()); System.out.println(violations.size()); } }