Introduction to Spring
1. What is Spring Framework?
● Spring is a comprehensive Java framework for building robust, enterprise-
grade applications.
● It simplifies Java development by offering a variety of tools for
dependency management, aspect-oriented programming, web
development, and more.
2. Why Spring?
● Other frameworks like Struts (web) and Hibernate (ORM) address specific
concerns.
● Spring provides a complete solution for all application needs, including
web, database, security, and transaction management.
3. Core Features of Spring:
● POJO-Based Development: Build applications using Plain Old Java
Objects (POJOs), without relying heavily on frameworks.
● Dependency Injection (DI): Handles object creation and dependency
management, promoting loose coupling.
● Aspect-Oriented Programming (AOP): Manages cross-cutting concerns
(e.g., logging, security) separately from business logic.
4. Main Spring Modules:
● Spring Core: Provides the fundamental building blocks, including DI and
BeanFactory.
● Spring AOP: Enables modularization of concerns like logging or
transaction management.
● Spring ORM: Integration with Hibernate, JPA, and other ORM tools.
● Spring MVC: Facilitates web application development using the Model-
View-Controller pattern.
● Spring Boot: A Spring extension for creating standalone applications with
embedded servers (Tomcat, Jetty).
5. Why Spring?
● Lightweight and modular.
● Promotes clean, maintainable code.
● Supports a wide range of technologies (Web, ORM, Security).Spring has
become a standard for Java development due to its flexibility and ease of
integration with other frameworks and libraries.
