How to Create a Spring Boot Project in Spring Initializr and Run it in IntelliJ IDEA?

Java language is one of the most popular languages among all programming languages. There are several advantages of using the java programming language, whether for security purposes or building large distribution projects. One of the advantages of using Java is that it tries to connect every concept in the language to the real world with the help of the concepts of classes, inheritance, polymorphism, etc.

There are several other concepts present in java that increase the user-friendly interaction between the java code and the programmer such as generic, Access specifiers, Annotations, etc these features add an extra property to the class as well as the method of the java program. In this article, In this article, we will discuss how to change the port number in the spring boot.

Note: First we need to establish the spring application in our project.

Spring Initializr is a web-based tool using which we can easily generate the structure of the Spring Boot project. It also provides various different features for the projects expressed in a metadata model. This model allows us to configure the list of dependencies that are supported by JVM. Here, we will create the structure of an application using a spring initializr and do the following steps.

Steps:

1. Go to Spring Initializr
2. Fill in the details as per the requirements
3. Click on Generate which will download the starter project
4. Extract the zip file
5. Create a java class with the name Controller and add the annotation
6. Go to the Postman and add URL address and make put request

These steps are sequentially described below with visual aids as follows:

Step 1: Go to Spring Initializr

Step 2: Fill in the details as per the requirements. For this application:

Project: Maven
Language: Java
Spring Boot: 2.2.8
Packaging: JAR
Java: 8
Dependencies: Spring Web

Step 3: Click on Generate which will download the starter project.

Step 4: Extract the zip file. Now open a suitable IDE and then go to File->New->Project from existing sources->Spring-boot-app and select pom.xml. Click on import changes on prompt and wait for the project to sync.

Note: In the Import Project for Maven window, make sure you choose the same version of JDK which you selected while creating the project.

We need to change the port number using the application.properties file in the project structure of the spring application.

application.properties:

server.port=7000

Step 5: Go to src -> main -> java -> com.gfg.Spring.boot.app and run the main application.

Terminal output:

Tomcat is running on server 7000.