Apache Commons Codec

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  1. 4de60e8 Replace Java 15 with Java 16 in Travis CI. by Gary Gregory · 10 days ago master
  2. ac495d6 Merge pull request #87 from apache/dependabot/github_actions/actions/cache-2.1.6 by Jochen Wiedmann · 3 weeks ago
  3. c05eb1b Bump actions/cache from 2.1.4 to 2.1.6 by dependabot[bot] · 3 weeks ago
  4. d7cc6db Track changes by Alex Herbert · 4 weeks ago
  5. 6b67d6f CODEC-301: Reduce byte[] allocations by reusing buffers by Alexander Pinske · 5 weeks ago

Apache Commons Codec

Build Status Coverage Status Maven Central Javadocs

The Apache Commons Codec package contains simple encoder and decoders for various formats such as Base64 and Hexadecimal. In addition to these widely used encoders and decoders, the codec package also maintains a collection of phonetic encoding utilities.


More information can be found on the Apache Commons Codec homepage. The Javadoc can be browsed. Questions related to the usage of Apache Commons Codec 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 Codec? Then donate back to the ASF to support the development.

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