Spring throws the error: Bean definition is abstract

Question

I need some help with next topic.

I have a hierarchy of beans, just like that:

Answer 1

There is no different between abstract class and abstract beans.When you use beans and refer to another bean which is abstract , it means you want to instantiate an abstract class it and it can not work surely ! Be careful when you are using an abstract class ! An abstract class is used for template class and you can just extend it !