Java – Page 43 – Sharp: NCLEX, Java & Python

Java: Controllers, Services, Repositories

Why do teams use constructor injection in Spring in production code?

Why should service beans avoid stateful variables?

What are the risks of using stateful instance variables in a Singleton service?

Why might constructor injection be preferred over setter injection?

What problem can occur when a transaction-managed method calls another method in the same class?

How can you resolve transaction self-invocation issues in Spring?

How would you explain the use of the @Scope annotation in Spring in an interview?

What happens if a Singleton bean is injected with a Prototype bean?

Why can using a Prototype bean within a Singleton without proper management become a problem in practice?

Why is it important to manage state within a Singleton bean carefully?