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How can I create an executable/runnable JAR with dependencies using Maven?

Utpal Vishwas 632 21-Jul-2023

How can I create an executable/runnable JAR with dependencies using Maven?

tools tools  maven 
Updated on 22-Jul-2023
Utpal Vishwas

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I am Utpal Vishwas from Uttar Pradesh. Have completed my B. Tech. course from MNNIT campus Prayagraj in 2022. I have good knowledge of computer networking.

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Aryan Kumar

Aryan Kumar

22-Jul-2023

To create an executable/runnable jar with dependencies using Maven, you can use the maven-assembly-plugin. The maven-assembly-plugin allows you to package your project and its dependencies into a single JAR file.

To use the maven-assembly-plugin, you need to add the following dependency to your pom.xml file:

<dependency>
  <groupId>org.apache.maven.plugins</groupId>
  <artifactId>maven-assembly-plugin</artifactId>
  <version>3.3.0</version>
</dependency>

You also need to add the following configuration to your pom.xml file:

<build>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-assembly-plugin</artifactId>
      <configuration>
        <archive>
          <manifest>
            <mainClass>com.example.MyApplication</mainClass>
          </manifest>
        </archive>
        <descriptorRefs>
          <descriptorRef>jar-with-dependencies</descriptorRef>
        </descriptorRefs>
      </configuration>
    </plugin>
  </plugins>
</build>

The mainClass element specifies the class that should be executed when the JAR file is run. In this case, the main class is com.example.MyApplication.

The jar-with-dependencies descriptor ref tells the maven-assembly-plugin to include all of the dependencies of your project in the JAR file.

Once you have added the maven-assembly-plugin configuration to your pom.xml file, you can build your project by running the following command:

" mvn assembly:single "

This will create a JAR file in the target/ directory of your project. The JAR file will be named project-name-jar-with-dependencies.jar.

You can then run the JAR file by executing the following command:

" java -jar project-name-jar-with-dependencies.jar "

This will run the com.example.MyApplication class, which is the main class of your project.

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