Spring Boot is a powerful framework for building Java applications. It simplifies the setup and development process, allowing you to focus on your application's logic. In this tutorial, we'll guide you through creating a simple "Hello World" application with Spring Boot and provide you with sample code to get started.


Before you begin, make sure you have the following prerequisites:

Step 1: Create a New Spring Boot Project

Let's start by creating a new Spring Boot project:

  1. Open your IDE and select "File" > "New" > "Project..."
  2. Choose "Spring Initializr" or "Spring Boot" as the project type.
  3. Configure your project settings, such as the project name, package, and dependencies. For a "Hello World" application, you can select the "Spring Web" dependency.
  4. Click "Finish" to create the project.

Step 2: Write the "Hello World" Code

Now, let's write the code for the "Hello World" application. Spring Boot makes it easy to create a RESTful web service. Here's a sample code:

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
public class HelloWorldApplication {
public static void main(String[] args) {, args);
class HelloController {
public String sayHello() {
return "Hello, World!";

In this code, we have a Spring Boot application with a REST controller that handles requests to /hello. When accessed, it returns the message "Hello, World!".

Step 3: Run the Application

Run your Spring Boot application from your IDE. It will start an embedded web server, and you can access the "Hello, World!" message at http://localhost:8080/hello.


Building a "Hello World" application with Spring Boot is a great way to get started with the framework. Spring Boot simplifies the development process, and you can expand this example to build more complex applications with ease.