IntelliJ Spring Boot: How to create an executable jar

You should use spring-boot-maven-plugin or spring-boot-gradle-plugin, depending on your preferred build system.

EDIT:

Just run ./gradlew build

I suggest to dive into this getting started guide. It clarifies a lot of stuff for beginners.

A typical Spring boot project is a Maven project or a Gradle-Project (I only know how to do it with Maven, for Gradle see [luboskrnacs answer][1]). So you just need to run the maven targetpackageand pick the jar form the (created)target` folder

use a shell, go to the project root directory (where the pom.xml file is) and type

mvn clean package
cd target

the there is the xxx.jar file.