exectuable jar file problem to load main class

Question

I generate exectuable jar then tries to run it in cmd java xml-generator.jar unfortunately but I have Error: Could not find or load main class xml-generator.jar

pom.xml file with dependecies, which I used in this project

   <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-jar-plugin</artifactId>
                <version>3.1.0</version>
                <configuration>
                    <archive>
                        <manifest>
                            <addClasspath>true</addClasspath>
                            <classpathPrefix>lib/</classpathPrefix>
                            <mainClass>org.example.XMLGenerator</mainClass>
                        </manifest>
                    </archive>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-shade-plugin</artifactId>
                <version>3.3.0</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>shade</goal>
                        </goals>
                        <configuration>
                            <transformers>
                                <transformer
                                        implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                                    <mainClass>org.example.XMLGenerator</mainClass>
                                </transformer>
                            </transformers>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

    <properties>
        <maven.compiler.source>18</maven.compiler.source>
        <maven.compiler.target>18</maven.compiler.target>
    </properties>

    <dependencies>

        <dependency>
            <groupId>com.unboundid</groupId>
            <artifactId>unboundid-ldapsdk</artifactId>
            <version>6.0.5</version>
        </dependency>

        <dependency>
            <groupId>javax.xml.bind</groupId>
            <artifactId>jaxb-api</artifactId>
            <version>2.4.0-b180830.0359</version>
        </dependency>

        <dependency>
            <groupId>org.fusesource.jansi</groupId>
            <artifactId>jansi</artifactId>
            <version>2.4.0</version>
        </dependency>

    </dependencies>

edit* thanks to maven-shade-plugin, two jar files are generated for me in the target directory.

MANIFEST.MF file

Manifest-Version: 1.0
Main-Class: XMLGenerator

exectuable jar is generated by IntelliJ IDE, any idea how to fix it?

xml-generator (module)
-.idea
-src
--main
---java
----META-INF
-----MANIFEST.MF
----XMLGenerator.class
-target
--xml-generator-1.0-SNAPSHOT (generated jar)
pom.xml

Answer 1

java xml-generator.jar tells Java to launch the class named xml-generator.jar on the default classpath, which most likely is not what you want.

The option to launch an executable jar is -jar , and the jar is generated by Maven, so in your case that would be

java -jar target/xml-generator-1.0-SNAPSHOT.jar