What makes Spring a popular platform for application development?

Spring is popular due to its modular architecture and a wide range of tools that simplify enterprise application development. Main reasons for popularity:

• Inversion of Control (IoC) and Dependency Injection (DI) allow easy management of dependencies between components.
• Modularity: you can use only the parts of the framework you need.
• Support for various technologies: integration with databases, web servers, security, microservices.
• Large community and ecosystem: many ready-made solutions and libraries.
• Simplified configuration thanks to annotations and Spring Boot, which enables quick application startup with minimal setup.

Example of using Spring Boot to create a REST service:

@RestController
public class HelloController {
    @GetMapping("/hello")
    public String hello() {
        return "Hello, Spring!";
    }
}