package org.hibernate.validator.referenceguide.chapter03.validation; import java.lang.annotation.Documented; import java.lang.annotation.Retention; import java.lang.annotation.Target; import javax.validation.Constraint; import javax.validation.ConstraintValidator; import javax.validation.ConstraintValidatorContext; import javax.validation.Payload; import static java.lang.annotation.ElementType.ANNOTATION_TYPE; import static java.lang.annotation.ElementType.CONSTRUCTOR; import static java.lang.annotation.ElementType.METHOD; import static java.lang.annotation.RetentionPolicy.RUNTIME; @Target({ METHOD, CONSTRUCTOR, ANNOTATION_TYPE }) @Retention(RUNTIME) @Constraint(validatedBy = { ValidRacingCar.Validator.class }) @Documented public @interface ValidRacingCar { String message() default "{org.hibernate.validator.referenceguide.chapter03.validation.ValidRacingCar.message}"; Class<?>[] groups() default { }; Class<? extends Payload>[] payload() default { }; class Validator implements ConstraintValidator<ValidRacingCar, Car> { @Override public void initialize(ValidRacingCar constraintAnnotation) { } @Override public boolean isValid(Car car, ConstraintValidatorContext context) { return false; } } }