添加jar不足以将其包含在文件中，您需要我们e m 选项，如

To add the jar is not enough to include it in the files, you have to use the m option, like

jar cmf myManifestFile myFile.jar *.class

根据 jar文档。选项 m 和 f 的顺序必须匹配 MANIFEST 文件和jar文件。

according to jar documentation. The order of the options m and f has to match the order of the parameters for the name of the MANIFEST file and the jar file.

也考虑到这个警告：现有的清单文件必须以新行字符。如果不以新的行字符结尾，则jar不解析清单文件的最后一行。