This demo uses Spring Boot. You can find additional Spring Boot documentation here

To build the jar:

./mvnw clean package

This will create a jar file in target/hello-world-0.0.1-SNAPSHOT.jar

To run the application:

java -jar <path-to-deployed-jar>/hello-world-0.0.1-SNAPSHOT.jar

The application will start in the foreground. By default it starts accepting requests port 8080.