If you’re a Java Developer, you have most likely heard about the Spring Framework. Whether it’s from one of your direct colleagues, at a client’s office, or in an online community - you have probably encountered people who are actively using Spring.
Spring still is one of the most popular Java frameworks available today. The Spring community is quite big and very active, which is one of the reasons it is often talked about. But there’s much more to the Spring framework than that, of course.
What is the Spring Framework exactly? And how does it work? On this page, we’ll give you an introduction to the world of Spring and explain how this popular Java Framework works. You will also have the possibility to download our free ebook "An introduction to Spring, the popular Java development framework".
A common misconception: Spring is not the same as Spring Boot
Many people use the terms Spring and Spring Boot interchangeably, but beware: they’re not the same! When people use the word Spring, they usually refer to the Spring Framework. Spring Boot is actually more of an extension of the Spring framework. Our Spring trainer Patrick Hancke explains the difference in the video on the right.
Spring Boot is a tool that makes developing web applications and microservices with the Spring Framework a lot easier for Java developers. While the Spring framework focuses on providing flexibility, Spring Boot aims to shorten the code length and allows you to build a stand-alone application with minimal or zero configurations.
Spring boot is widely used to develop REST APIs, whereas the Spring Framework is mostly used for building applications. You can read more about Spring Boot in Spring's documentation.
What is Spring used for?
For developing web applications
Spring is a lightweight application development framework, so it’s no surprise that it’s often used to develop web applications.
For securing web applications
You can implement Spring Security in your projects to protect the web applications you’re building.
For handling long running jobs
Spring Batch provides functions which are essential in processing large volumes of records.
For handling external resources
With Spring Integration, you can integrate external systems via declarative adapters within Spring-based applications.
For standalone Java projects
Spring containers can be run stand-alone with Spring Boot, which makes it easy to create production-grade Spring based applications.
In this ebook, you’ll find an extensive introduction to the Spring Framework. We’ll cover the basics around what Spring is and what it can do for you, but we’ll also dive deeper: you will get insights into our Spring trainers’ favourite features, how you can get started with Spring, and how you can prepare yourself for the Spring Professional certification exam, should you decide to take it. Happy reading!