A util Validator class method.

ExampleValidator.java

...
import javax.validation.ConstraintViolation;
import javax.validation.Validation;
import javax.validation.Validator;
import javax.validation.ValidatorFactory;
...
public static void myValidator(SomeBean someBean) {
    ...
    ValidatorFactory validatorFactory = Validation.buildDefaultValidatorFactory();
    Validator validator = validatorFactory.getValidator();
    Set<ConstraintViolation<SomeBean>> violations = validator.validate(someBean);
    ...
}
...