This is the default deployment option and you (usually) don't need to do anything if you created your application via maven archetype.

In order to create a fat jar, go to your project home, open a terminal and run:

mvn clean package

The jar will be available inside the target directory.

We use the maven-shade-plugin for creating the fat jar:

...
<build>
  <plugins>
    ...
    <!-- Build fat jar -->
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-shade-plugin</artifactId>
    </plugin>
    ...
  </plugins>
</build>

Or the gradle-shadow-plugin:

buildscript {
  repositories {
    maven {
      url "https://plugins.gradle.org/m2/"
    }
  }
  dependencies {
    classpath "com.github.jengelman.gradle.plugins:shadow:1.2.4"
  }
}

apply plugin: "com.github.johnrengelman.shadow"

If you created your application via maven archetype this setup is already present in your application.

Since everything was bundled into a single jar, all you have to do is:

java -jar myapp.jar [env]

Easy huh? No complex deployment, no heavy-weight servers, no classpath hell, nothing!

Your application is up and running!