What steps are necessary to develop web applications in Java?

The typical steps for developing web applications in Java are:

1. Choosing technology and framework — for example, Spring Boot, Jakarta EE, or others.
2. Project setup — creating the project structure, configuring the build tool (Maven, Gradle).
3. Developing data models — creating classes that reflect business logic and data structure.
4. Creating controllers — classes that handle HTTP requests and generate responses.
5. Routing configuration — defining URL paths and methods (GET, POST, etc.).
6. Implementing the service layer — business logic of the application.
7. Connecting to the database — setting up ORM (e.g., Hibernate), creating repositories.
8. Testing — writing unit and integration tests.
9. Deployment and launch — building the application and deploying it on a server.

Example of a simple controller in Spring Boot:

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

Thus, developing a web application in Java involves planning the architecture, selecting tools, and sequentially creating components that ensure the application's operation.