Spring Boot : Hello World Example

Create a Spring Boot application to print "Hello World".

Prerequisites for Creation of Spring Boot :

• Java with version 1.6 or above. Better to use the latest version.
• If using Maven then 3.2 or above.
• If using Gradle then 2.9 or above.
• Plugin of Spring Tool Suit enabled in IDE like eclipse.
• Basic knowledge of  Spring Framework.

Versions Used :

• Java 1.8
• Spring Boot 1.5.9
• Eclipse 4.6.9 Neon

Create a Maven project and provide the dependency :

• Go to File >> New >> Maven Project.
• Provide Artifact Id as your project name. In this case, it is SpringBootTutorial.

    

•  Provide the following dependencies in the pom.xml file.

<parent>        <groupId>org.springframework.boot</groupId>        <artifactId>spring-boot-starter-parent</artifactId>            <version>1.5.9.RELEASE</version>   </parent>   <dependencies>       <dependency>            <groupId>org.springframework.boot</groupId>            <artifactId>spring-boot-starter-web</artifactId>                        </dependency>   </dependencies>

• Provide the mapping for the method to return "Hello World".

@Controller   @EnableAutoConfiguration   public class SpringBootTutorial{ @RequestMapping("/") @ResponseBody String Home() { return "Hello World"; } public static void main(String[] args) { SpringApplication.run(SpringBootTutorial.class, args);     }  }

• Run as Spring Boot App.

     

• Go to the browser and provide the URL localhost:[portNumber]/pathForMethod.

Refer the video tutorial :