Spring is a lightweight, open-source framework that provides a comprehensive infrastructure support for developing Java applications. It is designed to make Java development easier by providing a consistent framework for managing dependencies, configuring application components, and managing transactions.
What are the key features of the Spring Framework?
Some of the key features of Spring are dependency injection, aspect-oriented programming, data access, transaction management, and support for web and remoting.
What is Dependency Injection (DI) in Spring?
Dependency Injection (DI) is a design pattern that allows an object to be injected with the objects it depends on. Spring’s DI provides a consistent way to manage dependencies and allows for easy testing and configuration of applications.
What is the Spring IoC container?
The Spring IoC container is the core of the Spring Framework and is responsible for instantiating, configuring, and assembling objects known as beans. The container uses DI to manage dependencies between beans.
What are the different ways to configure Spring beans?
There are several ways to configure Spring beans, including XML, Java annotations, and Java code.
What is AOP in Spring?
AOP stands for Aspect-Oriented Programming. AOP allows for modularization of concerns such as logging, security, and transaction management into reusable components called aspects. Spring’s AOP provides a consistent way to implement AOP in Java applications.
What is the Spring MVC framework?
Spring MVC is a web framework that is built on the Spring Framework and is used to build web applications. It provides a consistent way to handle requests and responses, and allows for easy integration with other Spring features such as transaction management and security.
What is the difference between BeanFactory and ApplicationContext in Spring?
BeanFactory is the basic container provided by Spring, while ApplicationContext is an extension of BeanFactory that provides additional features such as support for internationalization and event handling.
What is a Spring Data Access Object (DAO)?
A DAO is a design pattern that provides a consistent way to access data from a database in a Spring application. Spring provides a template class called JdbcTemplate that makes it easy to work with databases using DAOs.
What is the Spring Boot?
Spring Boot is a framework that makes it easy to create stand-alone, production-grade Spring-based applications. It provides an opinionated view of the Spring platform and third-party libraries, and allows for easy configuration and deployment of applications.