Create ⏱ 25 min

Spring Boot Tutorial for Beginners | Full Course 2025

What You Will Learn

Create a new Spring Boot project using IntelliJ
Define a model for storing data in a database
Use Docker to install and run a Postgres database

Key Concepts

Spring Boot: a popular framework for building RESTful APIs and web applications in Java
Docker: a platform for developing, shipping, and running applications in lightweight, portable containers
Postgres: a powerful, open-source database management system
RESTful APIs: an architectural style for designing networked applications
Dependency injection: a technique for managing dependencies between objects in a system

Code Examples

@SpringBootApplication
public class Application {
    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

This is the main application class in a Spring Boot project, annotated with @SpringBootApplication.

@RestController
@RequestMapping("/api/v1/software-engineers")
public class SoftwareEngineerController {
    @GetMapping
    public List<SoftwareEngineer> getSoftwareEngineers() {
        // Return a list of software engineers
    }
}

This is an example of a RESTful API controller in Spring Boot, handling GET requests to retrieve a list of software engineers.

version: '3'
services:
  database:
    image: postgres:latest
    environment:
      - POSTGRES_USER=postgres
      - POSTGRES_PASSWORD=postgres
    volumes:
      - ./data:/var/lib/postgresql/data
    ports:
      - "5432:5432"

This is an example of a Docker Compose file, defining a Postgres database service.

Lesson Summary

In this lesson, we learned how to create a new Spring Boot project using IntelliJ and define a model for storing data in a database. We also learned about Docker and how to use it to install and run a Postgres database. The instructor showed us how to create a RESTful API controller in Spring Boot and how to use Docker Compose to manage multiple containers. We also saw how to create a new class in IntelliJ and how to generate getters and setters for a Java class. The lesson covered a lot of ground, but the key takeaways are that Spring Boot is a powerful framework for building web applications, Docker is a useful tool for managing containers, and Postgres is a robust database management system.

Practice Exercise

Create a new Spring Boot project using IntelliJ and define a model for storing books in a database. Use Docker to install and run a Postgres database, and create a RESTful API controller to handle GET requests to retrieve a list of books.

What Is Next

In the next lesson, we will learn how to integrate our Spring Boot application with the Postgres database using Spring Data JPA, and how to use Docker to manage multiple containers. We will also learn about the benefits of using a containerization platform like Docker and how it can simplify the development and deployment of our application.

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