Spring Boot hello world application creation for beginners

This spring boot tutorial shows how to create a basic Hello World application using IntelliJ IDEA. Nowadays Spring Boot is a very popular technique for creating microservices. It is an open-source Java-based framework. Comparing to Spring it gives more benefits to the developer such as annotation configurations and default codes, more flexible, configuration is easy, no manual XML configurations like Spring because it creates automatically and it saves the development time.

Spring boot provides Database transaction interfaces so easy to communicate with MySQL, Cassandra, or MongoDB, and it is more compatible to develop rest endpoints and it provides POM files it helps to manage dependencies in your project furthermore Spring Boot is providing embedded servlet container so you can use web servers like Tomcat to deploy your project.

Firstly we have to understand the structure of the project since it is a more important point in Spring Boot as well as Spring, This is the structure of a project.

Secondly, better understand the pom file. This will create automatically, all your dependencies should define here. E.g — MySQL connector, Embedded Tomcat, JUnit.
Below is the pom file.

Then create the Controller class I named “FirstController.java” and paste or write this code into it.

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