Class-Path: lib/log4j-1.2.16.jar

Class-Path: lib/log4j/log4j/1.2.16/log4j-1.2.16.jar

<plugin>
            <groupId>org.apache.maven.plugins</groupId>
            <artifactId>maven-jar-plugin</artifactId>
            <version>3.0.1</version>
            <configuration>
                <archive>
                    <index>true</index>
                    <manifest>
                        <addClasspath>true</addClasspath>
                         <classpathPrefix>lib/</classpathPrefix>
                    </manifest>
                    <manifestEntries>
                        <mode>development</mode>
                        <url>${project.url}</url>
                        <key>value</key>
                    </manifestEntries>
                </archive>
            </configuration>
        </plugin>