educative.io

Managing Beans and Dependencies - The Complete Guide to Spring 5 and Spring

Courses
,
#1

Hi,

I am new to java and spring. I do not understand that spring requires and instantiates an object from the interface “filter”. I thought interfaces cannot be instantiated (although I am aware that there are non-static methods since java8):
" The @Autowired annotation tells Spring that RecommenderImplementation needs an object of type Filter ."

Sorry for the noob question, but would be glad for a pointer in the right direction.

Course: The Complete Guide to Spring 5 and Spring Boot 2 - Learn Interactively
Lesson: Managing Beans and Dependencies - The Complete Guide to Spring 5 and Spring Boot 2

#2

Hey @Chris!
When we use spring @Autowired, instead of creating an object of that interface, an object of its child class is created.