How to know exactly the Javadoc command line?
The Javadoc Plugin calls the Javadoc tool with argument files, i.e. files called ‘options’, ‘packages’ and ‘argfile’ (or ‘files’ with Jdk < 1.4): ${project.reporting.outputDirectory}/apidocs/javadoc.exe(or .sh) \ @options \ @packages | @argfile These argument files are generated at runtime depending the Javadoc Plugin configuration and are deleted when the Javadoc Plugin ended. To preserve them, just add