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53

answers:

1
+4  Q: 

What version of ZIP is supported by Java (1.6 - or any version for that matter)

There are several versions of the ZIP format (http://en.wikipedia.org/wiki/ZIP_%28file_format%29#Version_history). It's unclear which version Java supports. In the source for ZipOutputStream it defines a constant related to the "minimum version to read" part of the header, but I'm not 100% certain that's the proper way to reverse engineer an answer to my question.

Can anyone provide better advice here?

Thanks.

+1  A: 

Info-ZIP Application Note 970311

The compression schemes are listed in the java.util.zip package summary.

McDowell  2010-07-27 23:15:01
Sorry, I should have mentioned that I also saw that, but unfortunately if you click on the link for Info-Zip provided in the package summary, you get issued a login (!) which obviously prevents one from getting at the actual data. However, since you reminded me of this, I decided to dig deeper and found that you can get the same doc at: http://www.info-zip.org/doc/appnote-19970311-iz.zip. From there, I got at the actual README-like file, which seems to indicate that the answer is 2.50. Please let me know if you deduce something different if you pursue this further. Thanks for the reminder.
kvista7  2010-07-27 23:30:04

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