The Apache Commons Math Library

The Apache Software Foundation is an American non-profit corporation that supports open source software projects written by volunteers. It includes a vast number of projects in widely diverse fields (see https://en.wikipedia.org/wiki/List_of_Apache_Software_Foundation_projects). One part of this collection is called Apache Commons, consisting of various Java libraries. These can be downloaded from http://commons.apache.org/downloads/.

We used the Apache Commons Math Library in Chapter 6, Regression Analysis. Here are the steps to follow to use it in your NetBeans projects:

1. Download either the tar.gz file or the .zip file of the most recent version (3.6.1, as of August, 2017) of the commons-math archive file from: http://commons.apache.org/proper/commons-math/download_math.cgi.
2. Expand the archive (double-click or right-click on it), and then copy the resulting folder to a location where other Java libraries are kept on your machine (for example, Library/Java...