Creating an Uber Jar with Maven

Creating a Shaded JAR

• The goals for the Shade Plugin are bound to the package phase in the build lifecycle.

Configuring your Shade Plugin

• Add this body to your pom.xml to ensure the mvn package command will generate an uber jar upon build.
• Execute the command below to skip tests upon packaging.
  • mvn package -Dmaven.test.skip=true

<project>
  ...
  <build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-shade-plugin</artifactId>
        <version>3.1.1</version>
        <configuration>
          <!-- put your configurations here -->
        </configuration>
        <executions>
          <execution>
            <phase>package</phase>
            <goals>
              <goal>shade</goal>
            </goals>
          </execution>
        </executions>
      </plugin>
    </plugins>
  </build>
  ...
</project>

Creating Uber Jar using Shade plugin

• From the root directory of the project, execute the command below to generate a .jar of the project
  • mvn package
• Execute the command below to skip tests upon packaging.
  • mvn package -Dmaven.test.skip=true

Checking the contents of a .jar File

• Execute the command below to echo the contents of the newly created .jar file.
  • jar tf jar-name