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Math and Calculations

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	JFormula - http://www.japisoft.com/ A Java library for evaluating mathematical expression. It is compatible with the JDK 1.1 and later. [Shareware]
	http://dsd.lbl.gov/~hoschek/colt/ - http://dsd.lbl.gov/~hoschek/colt/ High performance scientific and technical computing data structures and methods. (Open Source, Attribution)
	Java Numerics - http://math.nist.gov/javanumerics/ Working group that offers presentation, news, and libraries related to numerical computing.
	JEP - Java Mathematical Expression Parser - http://www.singularsys.com/jep/ Java classes for parsing and evaluating mathematical expressions. Supports multiple variables and user-defined functions. [Open source, GPL or commercial]
	http://jgrapht.sourceforge.net/ - http://jgrapht.sourceforge.net/ 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]

	JMP - Sparse matrix library - http://rs.cipr.uib.no/mtj/ A library for sparse matrix computations. Includes a sparse BLAS, many iterative solvers for different problems, sparse matrix I/O and parallelization. [Open source, GPL]
	JeksParser - http://www.eteks.com/jeks/en/ Parses and computes expressions or functions primarily for use in spreadsheet applications such as the example provided. [Beta Evaluation]
	JMathTools - http://jmathtools.sourceforge.net A mathematical Java toolbox designed to be easily used and modified for scientific software engineering. [Open source, BSD License]
	JMatLink - http://www.held-mueller.de/JMatLink/ 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]
	ArciMath BigDecimal - http://users.belgacombusiness.net/arci/math/ Fast and improved BigDecimal class. [Commercial/Free]

	Significant Figures - http://ostermiller.org/utils/SignificantFigures.html Handles parsing, rounding, and displaying numbers for scientific applications.
	AutoAbacus - http://www.singularsys.com/autoabacus/ 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]
	Math Parser - http://www.bestcode.com/html/jbcparser.html Package to parse and evaluate mathematical expressions at runtime. [Commercial]
	http://jeplite.sourceforge.net/ - http://jeplite.sourceforge.net/ A light-weighted (re)implementation of the Java Expression Parser (jep.sourceforge.net). The intention is to strip some of its not-so-often-used features, and thus speeding the rest. Includes expression optimizer. [Open source, GPL]
	Mersenne Twister Pseudo Random Number Generator Classes - http://www.axlradius.com/freestuff/Free.htm Offers multiple replacement implementations for java.util.Random. [Open Source]

	Mantissa (Mathematical Algorithms for Numerical Tasks In Space System Applications) - http://www.spaceroots.org/software/mantissa/index.html A class library devoted to simulation, including an ODE solving package, as well as least square estimators, solvers, polynomials, basic statistics features. [Open source, BSD-like]
	Mathematical expression parser library for Java [GPL] - http://oglimmer.de/java/mathematical_expression_parser.php Library to parse mathematical expressions like x^2+sin(x)-root(1/3*x). The following mathematical operations are supported: + - * / ( ) ^ root log sin cos tan asin acos atan. [Open source, GPL]
	Decimal Arithmetic for Java - http://www2.hursley.ibm.com/decimalj/ Improved BigDecimal class from IBM. [Open source]

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