Intellij Java 2016 & Maven : how to embed dependencies in JAR? [duplicate]

Question

I'm using Intellij Java 2016.2.2 and Maven to create a very simple Java console application.

I want to add an external library, so I add my dependency in Maven like this:

<dependency>     <groupId>jline</groupId>     <artifactId>jline</artifactId>     <version>2.12</version> </dependency> 

It works fine when I run it in the IDE, but not in an external console (I have the following error: java.lang.NoClassDefFoundError).

I checked and for some reason, the external JAR is not added in the JAR I just generated. I also tried many things in "File -> Project Structure", but still not working...

I just want to build my JAR with my dependencies in it, so I can simply run my application in a console using:

java -jar myproject.jar 

How can I do that? Thanks for your help!

Answer 1

I finally managed to generate this JAR with Intellij Java, here is how I do:

• add the dependencies in the pom.xml file
• go to File -> Project Structure -> Artifacts -> New -> JAR -> From module with dependencies
• choose the Main class and click OK
• in your project, in src/main, create the "resources" folder
• move the "META-INF" (with MANIFEST.MF in it) folder in this "resources" folder
• go to Build -> build artifacts to build the JAR

EDIT

A better (and easier way) to do it is adding the following lines in the pom.xml file :

<build>     <plugins>         <plugin>             <artifactId>maven-assembly-plugin</artifactId>             <configuration>                 <archive>                     <manifest>                         <mainClass>your.MainClass</mainClass>                     </manifest>                 </archive>                 <descriptorRefs>                     <descriptorRef>jar-with-dependencies</descriptorRef>                 </descriptorRefs>             </configuration>             <executions>                 <execution>                     <id>make-assembly</id>                     <phase>package</phase>                     <goals>                         <goal>single</goal>                     </goals>                 </execution>             </executions>         </plugin>     </plugins> </build> 

then use the "clean" and "package" maven commands.

The last 3 steps above (about MANIFEST.MF) still seem to be mandatory.