Java Spring Boot Interview Question | Inject Prototype Bean into Singleton using @Lookup
In this video, you’ll learn how to inject a Prototype Bean into a Singleton Bean using @Lookup in Spring Boot — one of the most asked Java Developer Interview Questions.
We’ll cover:
✅ Why injecting a Prototype Bean into a Singleton is a challenge in Spring
✅ What the @Lookup annotation does internally
✅ Full working example using Spring Boot
✅ How @Lookup helps achieve Method Injection
✅ Best practices and alternative approaches like Provider and ObjectFactory
spring boot project
This concept is a favorite Spring Boot interview question — especially for Senior Java Developers and Spring Framework experts.
By the end of this video, you’ll understand how Spring dynamically overrides methods at runtime and manages different bean scopes effectively.
Git Url - https://github.com/MJBackendBootCamp/...
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📚 Reference Articles:
🔗 Baeldung – Spring @Lookup Annotation: https://www.baeldung.com/spring-lookup
🔗 HowToDoInJava – Lookup Method Injection in Spring: https://howtodoinjava.com/spring-core...
🔗 RoyTuts – Spring Singleton Bean with Prototype Bean Lookup Injection: https://roytuts.com/spring-singleton-...
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