Building a REST API with Java and Spring Boot: A Practical Guide

Modern applications often rely on REST APIs to communicate between frontend applications, backend services, and databases. In this article, we'll look at the basic structure of a REST API using Java and Spring Boot.

Why Spring Boot?

Spring Boot makes it easier to build production-ready Java applications by providing configuration, dependency management, and a wide range of tools for developing web applications.

Some common benefits include:

• Easy REST API development
• Dependency injection
• Database integration
• Application configuration
• Built-in support for testing
• Production-ready application structure

Creating a REST Controller

A simple Spring Boot REST controller can expose an API endpoint:

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

    @GetMapping
    public List<User> getUsers() {
        return userService.getUsers();
    }
}