maven-invoker-plugin is a good example of a package containing empty jar files. The source tarball ships with 3 jar files used by the integration tests, they contain only a MANIFEST.MF file and no compiled class:
ebourg@icare:~/packaging/maven-invoker-plugin$ tar -tf ../maven-invoker-plugin_1.5.orig.tar.gz | grep jar maven-invoker-plugin-1.5/src/it/staging-dependencies/repo/org/apache/maven/its/minvoker-70/1.0-SNAPSHOT/minvoker-70-1.0-20081020.164906-1.jar maven-invoker-plugin-1.5/src/it/staging-dependencies/repo/org/apache/maven/its/dep/1.0/dep-1.0-tests.jar maven-invoker-plugin-1.5/src/it/staging-dependencies/repo/org/apache/maven/its/dep/2.0/dep-2.0.jar ebourg@icare:~/packaging/maven-invoker-plugin$ jar -tf src/it/staging-dependencies/repo/org/apache/maven/its/dep/1.0/dep-1.0-tests.jar META-INF/ META-INF/MANIFEST.MF -- To UNSUBSCRIBE, email to debian-bugs-dist-requ...@lists.debian.org with a subject of "unsubscribe". Trouble? Contact listmas...@lists.debian.org