This is Apache Commons Lang. It is available in both binary and source distributions.
Note: The tar files in the distribution use GNU tar extensions and must be untarred with a GNU compatible version of tar. The version of tar on Solaris and Mac OS X will not work with these files
The changes in this release are detailed in the release notes.
Thank you for using Lang.
From the Apache Commons Project
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Many of the files have been digitally signed using GnuPG. If so, there will be an accompanying file.asc signature file in the same directory as the file (binaries/ or source/). The signing keys can be found in the distribution directory at <http://www.apache.org/dist/commons/KEYS>.
Always download the KEYS file directly from the Apache site, never from a mirror site.
Always test available signatures, e.g., $ pgpk -a KEYS $ pgpv commons-lang3-3.12.0-bin.tar.gz.asc or, $ pgp -ka KEYS $ pgp commons-lang3-3.12.0-bin.tar.gz.asc or, $ gpg --import KEYS $ gpg --verify commons-lang3-3.12.0-bin.tar.gz.asc