Package the app

Quarkus apps can be packaged as an executable JAR file or a native binary. We’ll cover native binaries later, so for now, let’s package this as an executable JAR.

  1. In the terminal, run the following Maven command (not in Quarkus Dev Mode):

    mvn clean package -DskipTests

  2. This produces an executable jar file in the target/quarkus-app/ directory:

    jar
    quarkus-run.jar - being an executable fast jar. Be aware that it’s not an über-jar as the dependencies are copied into the target/lib directory.

Run the executable JAR

  1. Run the following command in the terminal:

    java -Dquarkus.http.port=8081 -jar target/quarkus-app/quarkus-run.jar

    We use -Dquarkus.http.port=8081 to avoid conflicting with port 8080 used for Live Coding mode

  2. With the app running, open a new terminal window, and ensure the app is running by executing a curl command:

    curl http://localhost:8081/hello

  3. You should see:

    Hola from Quarkus REST

Cleanup

Go back to the terminal in which you ran the app with java -jar and stop the app by pressing kbd:[CTRL+C]. Be sure not to close the "Start Live Coding" terminal!

Congratulations!

You’ve learnt how to build a basic app, package it as an executable JAR and start it up very quickly. The JAR file can be used like any other executable JAR file (e.g. running it as-is, packaging as a Linux container, etc.)

In the next step we’ll inject a custom bean to showcase Quarkus' CDI capabilities.