Pseudo-random numbers generators

Clone this repo:
  1. 9f492d0 Allow ziggurat sampling from only the overhangs in the performance test by aherbert · 23 hours ago master
  2. 9a25d0b Fix javadoc mix up between convex and concave regions by aherbert · 24 hours ago
  3. 55e02d4 Added ternary variations to the ziggurat benchmark by Alex Herbert · 36 hours ago
  4. 722271e Ensure stream is closed using try-with-resources by Alex Herbert · 2 days ago
  5. 59d13d7 Remove badges from examples by aherbert · 3 days ago

Apache Commons RNG

Build Status Coverage Status Quality Gate Status Maven Central Javadocs Code Quality: Java

The Apache Commons RNG project provides pure-Java implementation of pseudo-random generators.


More information can be found on the Apache Commons RNG homepage. The Javadoc for each of the modules can be browsed:

Questions related to the usage of Apache Commons RNG 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, e.g.:



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 file for required notices and attributions.


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

Additional Resources