Spring Boot works internally through a series of automated processes that rely on auto-configuration, starter dependencies, and the core Spring Inversion of Control (IoC) container to minimize manual setup.
It scans the classpath for libraries, frameworks, and other components and configures beans that are needed for your application to function. Embedded Servers: Spring Boot includes embedded servers (such as Tomcat, Jetty, or Undertow) which allow you to run your application as a standalone Java application.
The spring-boot-starter-web includes an embedded Tomcat server by default. During the application startup, Spring Boot detects the presence of web-related dependencies and configures the embedded server. The server is started when the SpringApplication.
Spring Boot gives an easier, quicker path to set up, configure, and run apps. It eliminates the heavy lifting of configuration that is required for setting up most Spring-based apps. Developers can jump right in and use Spring Boot without ever having to learn the underlying Spring framework.
The Spring Framework consists of features organized into about 20 modules. These modules are grouped into Core Container, Data Access/Integration, Web, AOP (Aspect Oriented Programming), Instrumentation, and Test, as shown in the following diagram.
There are four layers in Spring Boot are as follows: Presentation Layer Business Layer Persistence Layer Database Layer Presentation Layer: The presentation layer handles the HTTP requests, translates the JSON parameter to object, and authenticates the request and transfer it to the business layer.
The four pillars of Java—Encapsulation, Inheritance, Polymorphism, and Abstraction—constitute the foundation of its Object-Oriented Programming paradigm. Together, they provide a robust framework for creating modular, reusable, and maintainable code.
Spring Boot is a backend framework that has become a major player in the enterprise Java ecosystem. It lets Java developers start building web applications quickly, without fuss.
The IDE for Spring developers. IntelliJ IDEA provides a rich set of built-in developer tools and support for the Spring framework in both Java and Kotlin code, including Spring MVC, Spring Boot, Spring Integration, Spring Security, and Spring Cloud.
Building a RESTful API is a common task for backend developers. With Spring Boot, creating robust and scalable REST APIs becomes straightforward.
Yes! Spring Boot isn't just for web apps. Learn how to create non-web (console-based) applications using CommandLineRunner , ApplicationRunner , and disable the web server in Spring Boot.
Spring Boot can auto-configure embedded H2, HSQL, and Derby databases. You need not provide any connection URLs. You need only include a build dependency to the embedded database that you want to use. If there are multiple embedded databases on the classpath, set the spring.
Spring Boot simplifies application development by handling most configurations internally. With features like auto-configuration, starter dependencies, embedded servers, and externalized configuration, it allows developers to focus on business logic instead of setup hassle-free.
How to Connect Database in Spring Boot
Spring Boot is an open-source, microservice-based Java web framework offered by Spring, particularly useful for software engineers developing web apps and microservices.
Spring Boot is a fusion of the lightweight Spring application framework, configuration annotations, and an embedded HTTP server. With an auto-configuration feature and support for Spring Initializer, Groovy, and Java, Spring Boot reduces integration, development, and unit test time.
Spring Boot provides extensive support for JPA (Java Persistence API), Hibernate and more such widely adopted ORM standards. In this implementation we will use Spring Data Spanner module as the ORM layer that connects the app and the data.
While Spring Boot, Python frameworks (Django/Flask), and Golang frameworks (Gin/Fiber) each bring unique strengths to the table, the best choice ultimately depends on your project requirements. Spring Boot is ideal for large, complex, enterprise-level applications where maintainability and security are crucial.
Spring Tool Suite (STS) is a customized distribution of Eclipse IDE tailored for Spring framework development. While Eclipse is a versatile IDE supporting multiple languages and frameworks, STS comes pre-configured with Spring-specific tools, templates, and features to streamline Spring application development.
Java Platform, Standard Edition (Java SE) Java Platform, Enterprise Edition (Java EE) Java Platform, Micro Edition (Java ME) Java FX.
Key benefits. Learn Java in 7 days with 30-minutes of hands-on training followed, by a 1-hour practical exercise, each day. This course teaches you Java and the most important concepts to help your skillset stay ahead of the curve.
Spring MVC (Model-View-Controller) is a popular framework within the Spring ecosystem used to build web applications. It follows the Model-View-Controller design pattern, which helps in separating the business logic, presentation logic, and navigation logic, thus making the code more manageable and scalable.
The Four Pillars of Object Oriented Programming
These principles include Single Responsibility, Open/Closed, Liskov Substitution, Interface Segregation, and Dependency Inversion, guiding the creation of flexible and maintainable software systems.
Conclusion: Is OOP Still Relevant? OOP is still highly relevant — but it's no longer the only approach. For large-scale applications, OOP remains the best choice. For high-performance computing, Functional Programming is often preferred.