ClassCastException when casting to the same class

Question

I have 2 different Java projects, one has 2 classes: dynamicbeans.DynamicBean2 and dynamic.Validator.

On the other project, I load both of

Answer 1

I had the same issue on a wildfly EJB, The EJB was returning a list of Objects and has an remote and a local interface. I used the Local interface by mistake what was working just fine up until the point you try to cast the objects in the list.

Local/Remote interface:

public interface DocumentStoreService {

    @javax.ejb.Remote
    interface Remote extends DocumentStoreService {
    }

    @javax.ejb.Local
    interface Local extends DocumentStoreService {
    }

The EJB bean:

@Stateless
public class DocumentStoreServiceImpl implements DocumentStoreService.Local, DocumentStoreService.Remote {

The correct spring wrapper around the EJB:

Note the $Remote, You can change this to $Local and it will find the Local interface just fine, and also execute the methods without any issue (from a separate application on the same container), but the model objects are not marshaled and are from a different class loader if you use the local interface by mistake.