Java Spring/Hibernate Questions

1.  Pros and Cons about Sping
    Cons:
         Huge, I wouldn't put 3000 jars in my hobby project
         Slower than other DI, like juice
         getting more and more complex in annotation and XML
     Pros:
         decoupling
         readable

2. What are the common types of Dependency Injection:
    Constructor-based:
        Use for mandatory injection

    Setter-based:
        invoking a no-argument constructor or no-argument static factory method to instantiate your bean.
        Use for optional injection
    1. Inject differently
    2. Constructor guarantees injection while setter injection can be failed
    3. Setter injection can detect circular dependency by throwing ObjectCurrentlyInCreationException
 

http://javarevisited.blogspot.com/2012/11/difference-between-setter-injection-vs-constructor-injection-spring-framework.html

3. What is the scope of Java Spring bean?
singleton: one object/ container     prototype/request: one object/ bean is requested or HTTP requested