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!
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.