I have a scenario where I am validating a List as NotNull for a method getTest see below example.
Using Hibernate Validator 4.3.0 Final

<pre>
public interface IApplication { void getTest(@NotNull List<String> someList); }
=============================
@AutoValidator
//This is similar to the MethodValidation Interceptor and using guice as DI
@Slf4j
public class ApplicationImpl implements IApplication {

@Override
public void getTest(List<String> app) { log.debug("Entered the method"); }
}

====================================
public class ValidationInterceptor implements MethodInterceptor {

@Inject
private ValidatorFactory validatorFactory;

@Override
public Object invoke(MethodInvocation invocation) throws Throwable {

MethodValidator validator = validatorFactory.getValidator().unwrap(
MethodValidator.class);
//validate the all parameter values if they have been annotated with any constraints
Set<MethodConstraintViolation<Object>> violations = validator
.validateAllParameters(
invocation.getThis(), invocation.getMethod(),
invocation.getArguments());

if (!violations.isEmpty()) { throw new MethodConstraintViolationException(violations); }

Object result = invocation.proceed();
//validate the return values if they have been annotated with any constraints
violations = validator.validateReturnValue(
invocation.getThis(),
invocation.getMethod(),
result);

if (!violations.isEmpty()) { throw new MethodConstraintViolationException(violations); } }

return result;
}

}

==================================
Unit test

public class AppTest {
@Test
public void getTest(){ List<String> app = null; appSvc.getTest(app); }
}
==================================

</pre>

Any help would be appreciated.