A Java library for evaluating mathematical expression. It is compatible with the JDK 1.1 and later. [Shareware]

Working group that offers presentation, news, and libraries related to numerical computing.

High performance scientific and technical computing data structures and methods. (Open Source, Attribution)

A class library that provides mathematical graph-theory objects and algorithms. JGraphT supports a rich gallery of graphs and is designed to be powerful, extensible and easy to use. [Open source, LGPL]

Java classes for parsing and evaluating mathematical expressions. Supports multiple variables and user-defined functions. [Open source, GPL or commercial]

A mathematical Java toolbox designed to be easily used and modified for scientific software engineering. [Open source, BSD License]

Connects Java and MATLAB. Native methods make it possible to use MATLAB's computational engine inside your own java applications, applets and servlets. [Freeware, source available]

An equation solving library that finds solutions to equation sets. A set of equations can be passed in as text, while AutoAbacus attempts to find a solution that satisfies all constraints. [Commercial, trial version]

Fast and improved BigDecimal class. [Commercial/Free]

Parses and computes expressions or functions primarily for use in spreadsheet applications such as the example provided. [Beta Evaluation]