Annotated list of jar files needed for building and testing JSS DEBIAN_BUILD (/usr/share/java/api.jar does not exist) /usr/share/java/slf4j-api.jar real file /usr/share/java/commons-codec.jar real file /usr/share/java/jaxb-api.jar real file /usr/share/java/commons-lang3.jar real file OPENSUSE_BUILD /usr/share/java/slf4j/api.jar real file /usr/share/java/apache-commons-codec.jar -> apache-commons-codec-1.10.jar /usr/share/java/jaxb-api.jar real file /usr/share/java/apache-commons-lang.jar real file /usr/share/java/apache-commons-lang3.jar real file FEDORA_BUILD /usr/share/java/slf4j/api.jar -> /usr/share/java/slf4j/slf4j-api.jar /usr/share/java/apache-commons-codec.jar -> /usr/share/java/commons-codec.jar /usr/share/java/jaxb-api.jar real file /usr/share/java/apache-commons-lang3.jar real file but the these are symbolic links /usr/share/java/commons-lang.jar -> apache-commons-lang.jar /usr/share/java/commons-lang3.jar -> apache-commons-lang3.jar The jaxb and lang3 are the ones required since OpenJDK 11 and latest Apache releases. 1) /usr/share/java/commons-lang3.jar provides the org.apache.commons.lang3.RandomStringUtils class which is imported by the org.mozilla.jss.tests.theUTF8ConverterTest 2) The JAXB functionality which was JSSEE type and not wanted on JSE is now provided by Apachae and other folks We get it from /usr/share/java/jaxb-api.jar This may need to be revised once OpenJDK 11 is released, Apache evolves, JSS 4.5.0, is realesed, and Fedora 29 is released. Hope it helps package maintainers tasked with the move to OpenJDK 11 which in my opinion should be postponed for JSS 4.6.0.