passing data within business logic layer

I am working with JDK 7.

I have all my business logic classes in com.srh.bll.businesslogic package.

I am concerned about how to return data from one business logic class to another business logic class.

For example I have 2 business logic classes ReferenceYearBusinessLogic and AnniversaryBusinessLogic.

Now methodA of ReferenceYearBusinessLogic needs to call methodA of AnniversaryBusinessLogic and expects to get 3 things back: referenceDate, anniversaryNumber and vacationRate.

And methodC of ReferenceYearBusinessLogic needs to call methodB of AnniversaryBusinessLogic and expects to get 2 things back: payScale and payRate.

And so on...

So I think I need to define classes to pass data in this case; one class would have 3 properties: referenceDate, anniversaryNumber and vacationRate while another class would have 2 properties: payScale and payRate.

What would be these classes called in design pattern world? I thought of them as DTOs but DTOs are used to transfer data between layers while in my case they will be used only within one layer and will not be needed outside of that layer. Any thoughts?