What server solution was used in your application?

Java applications often utilize various server solutions depending on project requirements. For example:

• Spring Boot — a popular framework for creating REST APIs and microservices with minimal configuration.
• Apache Tomcat — a servlet container for deploying web applications.
• Java EE (Jakarta EE) — a platform for enterprise applications supporting EJB, JPA, and others.

Example of using Spring Boot:

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

The choice of server solution depends on the scale of the project, performance requirements, and architecture.