Bean Scope – Sharp: NCLEX, Java & Python

Java: Bean Scope

Why should service beans avoid stateful variables?

Why is Singleton the default scope in Spring?

What risks do stateful variables in a Singleton service pose?

Why is method-scope variable usage safe in a Singleton bean?

How does Constructor Injection support immutability?

What issues arise from transaction self-invocation?

How can you manage Prototype beans in a Singleton?

How does Spring handle multithreaded access to Singleton beans?

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

Why might constructor injection be preferred over setter injection?