How to build jars from IntelliJ properly?

Question

I have a project that contains a single module, and some dependencies. I\'d like to create a jar, in a separate directory, that contains the compiled module. In addition, I\

Answer 1

If you are using third party libraries with your project or if you have problems with creating MANIFEST.MF file properly, there can be conflicts when running JAR files generated using

File > Project Structure > Artifacts > '+' > JAR > From modules with dependencies > .....

method mentioned above.

Instead I suggest you to create an empty JAR and add all other elements to the output root manually. A wonderful blog article for this method can be found here: http://karthicraghupathi.com/2016/07/10/creating-an-executable-jar-in-intellij-idea/ I tried the steps mentioned there and everything worked fine for me!

Answer 2

This is still an issue in 2017, I hope it will help somebody out there! I found 2 possibilities to create working jar-s under IntelliJ 2017.2

1. Creating artifact from IntelliJ:

• Go to project structure:

• Create a new artifact:

• Select the main class, and be sure to change the manifest folder:

You have to change manifest directory:

<project folder>\src\main\java 

replace "java" with "resources"

<project folder>\src\main\resources

This is how it should look like:

• Then you choose the dependencies what you want to be packed IN your jar, or NEAR your jar file

• To build your artifact go to build artifacts and choose "rebuild". It will create an "out" folder with your jar file and its dependencies.

2. Using maven-assembly-plugin

Add build section to the pom file

    <build>
        <plugins>
            <plugin>
                <artifactId>maven-assembly-plugin</artifactId>
                <configuration>
                    <finalName>ServiceCreate</finalName>
                    <appendAssemblyId>false</appendAssemblyId>
                    <archive>
                        <manifest>
                            <mainClass>com.svt.optimoo.App</mainClass>
                        </manifest>
                    </archive>
                    <descriptorRefs>
                        <descriptorRef>jar-with-dependencies</descriptorRef>
                    </descriptorRefs>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                </configuration>
            </plugin>
        </plugins>
    </build>

• Create a new run/debug configuration:

• Choose application:

• Fill in the form
• Add the "assembly:single" maven goal after build to be executed last

• Save it, then run

This procedure will create the jar file under the "target" folder