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

First of all abstract bean has nothing to do with the abstract class they don't even need to be mapped to a class.They are used to group the common properties shared by another beans.But you can not use an abstract bean as a ref to wire a property in another bean. If your bean myPackage.Another has a reference of type myPackage.Father and your child beans are assignable (either extends of implements) to myPackage.Father then you can wire either childA or childB in your myPackage.Another bean like this