how to add files to jars META-INF

Question

i want to create a jar file in which i want to place some file in the META-INF folder of the jar file.is it possible ? .i know how to create a jar file but clueless about how to put files inside META-INF

below is my desired jar files META-INF directory

META-INF > somefolder > somefile

Solution 1

jar uf jarfile.jar META-INF/somefolder/somefile

Solution 2

You probably have the META-INF folder already when you create the jar from the source. Just put your files there before making the jar.

Solution 3

Try creating a META-INF directory among the .class-files that you want to be included in the jar. Put whatever you want in this META-INF directory, and it will be included in the compiled jar-file.

Solution 4

Rename the .jar-file to something ending with .zip, open it with an appropriate program, change what you want to change, save it and rename it back to .jar. Jarfiles are Zipfiles.

Solution 5

From the jar documentation:

Updates an existing file jarfile (when f is specified) by adding to it files and directories specified by inputfiles. For example: jar uf foo.jar foo.class

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