Apache Commons Compress

Clone this repo:
  1. 7cb298d COMPRESS-509 : add '/' to directories with long name in tar by PeterAlfredLee · 3 weeks ago master
  2. 69de512 COMPRESS-510 : fix for multiple retrievals of InputStream for same SevenZFile entry fails by PeterAlfredLee · 5 weeks ago
  3. 1e6fd14 COMPRESS-510 : fix multiple retrievals of first entry of 7z by PeterAlfredLee · 5 weeks ago
  4. ff5782a update changes of COMPRESS-504 and COMPRESS-505 by PeterAlfredLee · 5 weeks ago
  5. 633a6f6 Add openjdk14 to Travis. by Gary Gregory · 6 weeks ago

Apache Commons Compress

Build Status Coverage Status Maven Central Javadocs

Apache Commons Compress software defines an API for working with compression and archive formats. These include: bzip2, gzip, pack200, lzma, xz, Snappy, traditional Unix Compress, DEFLATE, DEFLATE64, LZ4, Brotli, Zstandard and ar, cpio, jar, tar, zip, dump, 7z, arj.


More information can be found on the Apache Commons Compress homepage. The Javadoc can be browsed. Questions related to the usage of Apache Commons Compress should be posted to the user mailing list.

Where can I get the latest release?

You can download source and binaries from our download page.

Alternatively you can pull it from the central Maven repositories:



We accept Pull Requests via GitHub. The developer mailing list is the main channel of communication for contributors. There are some guidelines which will make applying PRs easier for us:

  • No tabs! Please use spaces for indentation.
  • Respect the code style.
  • Create minimal diffs - disable on save actions like reformat source code or organize imports. If you feel the source code should be reformatted create a separate PR for this change.
  • Provide JUnit tests for your changes and make sure your changes don't break any existing tests by running mvn clean test.

If you plan to contribute on a regular basis, please consider filing a contributor license agreement. You can learn more about contributing via GitHub in our contribution guidelines.


This code is under the Apache Licence v2.

See the NOTICE.txt file for required notices and attributions.


You like Apache Commons Compress? Then donate back to the ASF to support the development.

Additional Resources