Hello readers – In this tutorial we will go over list of steps on how to create your 1st very simple Hello World Spring Boot application with just few clicks.
Sometime back I’ve written an article on how to create your first Spring Boot application in Eclipse. Kindly take a look if you want to create it in Eclipse IDE.
Spring boot application usage increased a lot over last few years as it’s super simple to run your application without Apache Tomcat and any other application servers.
In next tutorial we will create simple Spring Boot Web application which listens on port 8081.
Let’s get started.
Step-1.
- Open IntelliJ IDEA
- Click on File
- Click on New
- Click on Project
Step-2.
- IntelliJ IDEA – Create Spring Boot application with
Spring Initializr - Click Next
Step-3.
- Provide Project details as below
- Group:
com.crunchify - Artifact: springboot
- package:
com.crunchify.springboot - Java Version: 13 or 14 (your installed JDK binary)
- Click Next
Step-4.
- Select all dependencies for your Spring Boot Application
- I haven’t selected any dependencies for this project
- Click Next
Step-5.
- This will create new Spring Boot Application in your IntelliJ IDEA.
- Open file: SrpingBootApplication.java
- Modify it to print some info messages
Copy and paste below content to it.
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package com.crunchify.springboot; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; /** * @author Crunchify.com * 1st Spring Hello World Application in Intellij IDEA by Crunchify.com * Version: 1.0 */ @SpringBootApplication public class SpringbootApplication { public static void main(String[] args) { SpringApplication.run(SpringbootApplication.class, args); System.out.println("\n Hello. This is 1st Spring Hello World Application in Intellij IDEA by Crunchify.com"); } } |
Step-6. Build a project
- Right click on project springboot from left panel
- Click on build module ‘springboot’
You should see successful build message as below.
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Clearing build system data... Executing pre-compile tasks... Loading Ant Configuration... Running Ant Tasks... Cleaning output directories... Running 'before' tasks Checking sources Copying resources... [springboot] Parsing java... [springboot] Writing classes... [springboot] Updating dependency information... [springboot] Adding @NotNull assertions... [springboot] Adding pattern assertions... [springboot] Parsing java... [tests of springboot] Writing classes... [tests of springboot] Updating dependency information... [tests of springboot] Adding @NotNull assertions... [tests of springboot] Adding pattern assertions... [tests of springboot] Running 'after' tasks javac 14.0.2 was used to compile java sources Finished, saving caches... Executing post-compile tasks... Loading Ant Configuration... Running Ant Tasks... Synchronizing output directories... 8/17/20, 12:11 PM - Build completed successfully in 2 s 236 ms |
Step-7. Run a Java program
- Right click on java file SpringbootApplication and run
- You should see successful result
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/Library/Java/JavaVirtualMachines/jdk-14.0.2.jdk/Contents/Home/bin/java -XX:TieredStopAtLevel=1 -noverify -Dspring.output.ansi.enabled=always -Dcom.sun.management.jmxremote -Dspring.jmx.enabled=true -Dspring.liveBeansView.mbeanDomain -Dspring.application.admin.enabled=true -javaagent:/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar=53480:/Applications/IntelliJ IDEA.app/Contents/bin -Dfile.encoding=UTF-8 -classpath /Users/appshah/crunchify/intellij/springboot/target/classes:/Users/appshah/.m2/repository/org/springframework/boot/spring-boot-starter/2.3.3.RELEASE/spring-boot-starter-2.3.3.RELEASE.jar :/Users/appshah/.m2/repository/org/springframework/boot/spring-boot/2.3.3.RELEASE/spring-boot-2.3.3.RELEASE.jar:/Users/appshah/.m2/repository/org/springframework/spring-context/5.2.8.RELEASE/spring-context-5.2.8.RELEASE.jar:/Users/appshah/.m2/repository/org/springframework/spring-aop/5.2.8.RELEASE/spring-aop-5.2.8.RELEASE.jar:/Users/appshah/.m2/repository/org/springframework/spring-beans/5.2.8.RELEASE/spring-beans-5.2.8.RELEASE.jar :/Users/appshah/.m2/repository/org/springframework/spring-expression/5.2.8.RELEASE/spring-expression-5.2.8.RELEASE.jar:/Users/appshah/.m2/repository/org/springframework/boot/spring-boot-autoconfigure/2.3.3.RELEASE/spring-boot-autoconfigure-2.3.3.RELEASE.jar:/Users/appshah/.m2/repository/org/springframework/boot/spring-boot-starter-logging/2.3.3.RELEASE/spring-boot-starter-logging-2.3.3.RELEASE.jar :/Users/appshah/.m2/repository/ch/qos/logback/logback-classic/1.2.3/logback-classic-1.2.3.jar:/Users/appshah/.m2/repository/ch/qos/logback/logback-core/1.2.3/logback-core-1.2.3.jar:/Users/appshah/.m2/repository/org/apache/logging/log4j/log4j-to-slf4j/2.13.3/log4j-to-slf4j-2.13.3.jar:/Users/appshah/.m2/repository/org/apache/logging/log4j/log4j-api/2.13.3/log4j-api-2.13.3.jar :/Users/appshah/.m2/repository/org/slf4j/jul-to-slf4j/1.7.30/jul-to-slf4j-1.7.30.jar:/Users/appshah/.m2/repository/jakarta/annotation/jakarta.annotation-api/1.3.5/jakarta.annotation-api-1.3.5.jar:/Users/appshah/.m2/repository/org/springframework/spring-core/5.2.8.RELEASE/spring-core-5.2.8.RELEASE.jar:/Users/appshah/.m2/repository/org/springframework/spring-jcl/5.2.8.RELEASE/spring-jcl-5.2.8.RELEASE.jar :/Users/appshah/.m2/repository/org/yaml/snakeyaml/1.26/snakeyaml-1.26.jar :/Users/appshah/.m2/repository/org/slf4j/slf4j-api/1.7.30/slf4j-api-1.7.30.jar com.crunchify.springboot.SpringbootApplication Java HotSpot(TM) 64-Bit Server VM warning: Options -Xverify:none and -noverify were deprecated in JDK 13 and will likely be removed in a future release. . ____ _ __ _ _ /\\ / ___'_ __ _ _(_)_ __ __ _ \ \ \ \ ( ( )\___ | '_ | '_| | '_ \/ _` | \ \ \ \ \\/ ___)| |_)| | | | | || (_| | ) ) ) ) ' |____| .__|_| |_|_| |_\__, | / / / / =========|_|==============|___/=/_/_/_/ :: Spring Boot :: (v2.3.3.RELEASE) 2020-08-17 12:12:29.554 INFO 70969 --- [ main] c.c.springboot.SpringbootApplication : Starting SpringbootApplication on LM-AUN-11022307 with PID 70969 (/Users/appshah/crunchify/intellij/springboot/target/classes started by appshah in /Users/appshah/crunchify/intellij/springboot) 2020-08-17 12:12:29.556 INFO 70969 --- [ main] c.c.springboot.SpringbootApplication : No active profile set, falling back to default profiles: default 2020-08-17 12:12:29.772 INFO 70969 --- [ main] c.c.springboot.SpringbootApplication : Started SpringbootApplication in 0.385 seconds (JVM running for 0.728) Hello. This is 1st Spring Hello World Application in Intellij IDEA by Crunchify.com Process finished with exit code 0 |
Congratulation. You have successfully created Spring Boot application.