Reflection - getInterfaces() shows weird interfaces

Using Hibernate, I get a List<BlablaPO> (BlablaPO implements Blabla). When I do something like this:

for(Blabla blabla : list) {
    Class<?>[] interfazes = blabla.getClass().getInterfaces();
}

This code is just a part of a piece of code that accepts a Collection<T>. Today, I used this code again on a new List<Blabla>, my returned interfaces do no have Blabla in them, instead I get 2 interfaces:

• interface org.hibernate.proxy.HibernateProxy
• interface javassist.util.proxy.ProxyObject

Am I loading the collection wrongly? I tried loading the collection eagerly.