Dependencies in Spring

What is This Course?

Every real Spring Boot application is really a small set of your own code sitting on top of a much larger stack of curated dependencies — "starters" for web, data, security, testing, messaging, and more. Knowing Spring itself is only half the job; knowing which dependency solves which problem, how to wire it in, and what it actually looks like in code is the other half.

This course is a project-organized field guide to that ecosystem. Instead of teaching Spring from scratch, it catalogs the dependencies you will reach for again and again — grouped by category — with the use case, the exact Maven/Gradle coordinates, the minimal configuration, and a working code example for each one.

Where is This Used?

This knowledge applies directly any time you are assembling or maintaining a real Spring Boot codebase:

Real-World Examples

Here are some practical scenarios this course prepares you for:

Why Learn This?

Code Example

Here is the shape of what every lesson covers — a dependency, its coordinates, and a minimal working example. This one adds validation to a REST controller:

<dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-validation</artifactId>
</dependency>

@RestController
@RequestMapping("/api/users")
public class UserController {

    @PostMapping
    public ResponseEntity<String> createUser(@Valid @RequestBody UserRequest request) {
        return ResponseEntity.ok("User " + request.getName() + " created");
    }
}

public class UserRequest {
    @NotBlank(message = "Name is required")
    private String name;

    @Email(message = "Email must be valid")
    private String email;

    // getters and setters
}

Course Curriculum

Follow these 26 lessons sequentially — they move from dependency-management foundations through each major category to a final real-world project.

Projects You'll Build

Apply your knowledge by building these real-world projects:

Frequently Asked Questions

Key Takeaways & Summary