package com.github.signed.sandboxes.spring.beanvalidation; import javax.validation.ConstraintValidator; import javax.validation.ConstraintValidatorContext; public class E164NumberValidator implements ConstraintValidator<E164Number, PhoneNumberTO> { @Override public void initialize(E164Number annotation) { } @Override public boolean isValid(PhoneNumberTO phoneNumberTO, ConstraintValidatorContext context) { return false; } }