Introduction to Spring Boot
Explore how Spring Boot streamlines Java application development by managing setup tasks like dependency injection and server configuration. Understand its auto-configuration features, embedded servers, and access to the extensive Spring ecosystem to build scalable, maintainable applications efficiently.
Throughout this course, we have built everything by hand. When we needed an object, we created it with new. When we needed a file, we opened a stream. We managed the lifecycle of every component ourselves.
In production environments, building large-scale systems without leveraging existing frameworks is usually not practical. We rely on tools that manage infrastructure concerns such as threading, database connectivity, and embedded web servers, so we can focus on application business logic. Spring Boot addresses this need. It is a framework that provides opinionated defaults and auto-configuration to simplify the structure and deployment of Java applications.
Why use a framework?
In earlier lessons, we wrote repetitive setup code just to get a program running. For a small console application, this is manageable. In a production web application, the setup grows quickly and becomes harder to manage.
Spring Boot builds on Spring’s Inversion of Control (IoC) container to manage this setup for us. When using a library, our code calls the library’s APIs directly. In a ...