Create a Spring Boot Project🌱 Beginner
The fastest and standard way to initialize a new Spring Boot application is by using the Spring Initializr. It generates a clean, ready-to-run project zip tailored to your exact specifications.
What is Spring Initializr?
Spring Initializr is a web-based tool provided by the Spring team (accessible at start.spring.io) that scaffolds your project structure, sets up your build tool (Maven or Gradle), and configures your initial dependencies.
How to Create a Project
- Navigate to start.spring.io (or use your IDE's built-in Initializr integration).
- Project: Choose Maven (the industry standard).
- Language: Choose Java.
- Spring Boot: Select the latest stable version (avoid SNAPSHOT or milestone releases).
- Metadata: Set your Group (e.g.,
com.example) and Artifact (e.g.,demo). - Dependencies: Click "Add Dependencies" and start with Spring Web.
Why Choose Specific Starters?
Starters are curated dependency bundles. Here are the most common ones you will use as your app grows:
| Starter Dependency | What it Provides |
|---|---|
| Spring Web | Everything needed to build RESTful APIs and MVC apps, including Tomcat. |
| Spring Data JPA | Hibernate integration for seamless database access. |
| PostgreSQL Driver / H2 | The specific driver required to connect to your chosen database. |
| Spring Security | Robust authentication and authorization mechanisms. |
| Spring Boot Actuator | Production monitoring, metrics, and health checks. |
How to Run the Application
Once you generate, download, and extract the project, you can run it entirely from the terminal using the Maven Wrapper (mvnw). This wrapper ensures the correct version of Maven is used without requiring a global install.
# macOS / Linux
./mvnw spring-boot:run
# Windows
mvnw spring-boot:runBy default, your application will start up an embedded Tomcat server on http://localhost:8080.
@Service and @Repository components remain completely stateless to guarantee thread safety across concurrent HTTP requests.