Midnight to think about the leakage of the vacancy, Spring in the Bean inheritance mechanism

The inheritance here is not inherited in Java, the following summarizes the difference between Bean inheritance and Java inheritance:

• Subclass beans and Parent beans in Spring can be of different types, but inheritance in Java guarantees that subclasses are a special kind of parent class;
• The relationship between instances of Bean inheritance in Spring, so the main performance is the continuation of parameter values; The inheritance in Java is the relationship between the classes, which mainly manifests as the continuation of the methods and attributes;
• The child bean in Spring cannot be used as a parent bean and is not polymorphic; Subclass instances in Java can be used entirely as instances of the parent class.

Midnight to think about the leakage of the vacancy, Spring in the Bean inheritance mechanism