jar is zip compatible.
https://docs.oracle.com/javase/8/docs/technotes/guides/jar/jarGuide.html

Also the Java sdk has an API to read/write zip / deflate files.

There is a JZOS sample program that shows how to create a zip archive using
z/OS data sets as input / output.

https://github.com/zsystems/java-samples/blob/master/ZipDatasets.java

On Sun, Jun 30, 2019 at 3:46 PM Paul Gilmartin <
0000000433f07816-dmarc-requ...@listserv.ua.edu> wrote:

> On Sun, 30 Jun 2019 20:34:19 +0000, Denis wrote:
>
> >I wonder if the jar command of the Java SDK in z/OS creates gzip
> compatible jar files, which in Windows can be extracted/used by renaming
> Form .jar to .ZIP.I cannot remember if the jar compression uses ziip.Any
> file type can be added to a jar, but I have not tried dd names.
> >
> I believe jar uses zip deflate.  I've used it to unpack zipped files from
> cbttape.org.
> I believe jar isn't fussy about filenames -- you can bypass the rename.
> Jar syntax is most similar to tar.
>
> -- gil
>
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