Spring @Lookup Annotation | How to Inject Prototype Bean into Singleton Bean Correctly

Java Spring Boot Interview Q20 !!

In this video, we explore how @Lookup annotation solves a common issue in Spring Boot— when a Prototype-scoped bean is injected into a Singleton bean, it starts behaving like a Singleton.

You'll learn:

1) Why prototype inside singleton breaks expected behaviour
2) How @Lookup uses lookup method injection to fix it
3) Differences between singleton vs prototype scope
4) How to properly use @Scope, @Lookup, and Spring’s dependency injection model

Perfect for understanding bean scopes in Spring and how to manage singleton-prototype dependencies correctly.

00:00 : Introduction
01:53 : Bean Scope : Quick Revision
06:45 : Prototype Bean in Singleton Bean Problem
08:27 : Why @Lookup is Required
08:48 : How to use @Lookup
14:01: Interview Tip of the Day !

Bean Scopes (Part 1) : Singleton vs Prototype
   • Understanding Bean Scopes: Singleton vs Pr...  

Bean Scopes (Part 2) : Request vs Session
   • Understanding Bean Scopes: Request vs Sess...  

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