It is a lightweight, loosely coupled and integrated framework for developing enterprise applications in java.

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Top Spring Interview
Questions and
Answers

2. Answer:
It is a lightweight, loosely coupled and integrated framework for
developing enterprise applications in java.
Question: 1 What is Spring?

3. Answer:
• Predefined Templates
• Loose Coupling
• Easy to test
• Lightweight
• Fast Development
• Powerful Abstraction
• Declarative support
Question: 2 What are the advantages of spring framework?

4. Answer:
• Test
• Spring Core Container
• AOP, Aspects and Instrumentation
• Data Access/Integration
• Web
Question: 3
What are the modules of spring framework?

5. Answer:
• Setter Injection: Setter-based DI is realized by calling setter methods
on your beans after invoking a no-argument constructor or no-
argument static factory method to instantiate your bean.
• Constructor Injection: Constructor-based DI is realized by invoking a
constructor with a number of arguments, each representing a
collaborator.
Question: 4
What are the types of Dependency
Injection Spring supports?

6. Answer:
• IOC container is responsible to:
• create the instance
• configure the instance, and
• assemble the dependencies
Question: 5
What is the role of IOC container in spring?

7. Answer:
• A BeanFactory is like a factory class that contains a collection of beans.
The BeanFactory holds Bean Definitions of multiple beans within itself
and then instantiates the bean whenever asked for by clients.
• BeanFactory is able to create associations between collaborating
objects as they are instantiated. This removes the burden of
configuration from bean itself and the beans client.
• BeanFactory also takes part in the life cycle of a bean, making calls to
custom initialization and destruction methods.
Question: 6 What is BeanFactory?

8. Answer:
• There are two types of IOC containers in spring framework.
• BeanFactory
• ApplicationContext
Question: 7
What are the types of IOC container in spring?

9. Answer:
BeanFactory is the basic container whereas ApplicationContext is the
advanced container. ApplicationContext extends the BeanFactory
interface. ApplicationContext provides more facilities than BeanFactory
such as integration with spring AOP, message resource handling for i18n
etc.
Question: 8
What is the difference between BeanFactory
and ApplicationContext?

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