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  • 32-bit Cyclic Redundancy Check (CRC) class: This check is used in numerous systems to verify the integrity of information. It's also used as a hashing function. [Open Source, Public Domain]
  • ArciMath BigDecimal: Fast and improved BigDecimal class. [Commercial/Free]
  • Colt: High performance scientific and technical computing data structures and methods. (Open Source, Attribution)
  • Decimal Arithmetic for Java: Improved BigDecimal class from IBM. [Open source]
  • FPLib: A small Java class that implements methods to perform arithmetic operations on 16:16 fixed-point numbers. [Open source, MIT license]
  • ILOG JSolver: A pure Java constraint-programming engine and a pure Java optimization library. [Commercial]
  • JEP - Java Mathematical Expression Parser: Java classes for parsing and evaluating mathematical expressions. Supports multiple variables and user-defined functions. [Open source, GPL or commercial]
  • JEPLite: 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]
  • JFormula: A Java library for evaluating mathematical expression. It is compatible with the JDK 1.1 and later. [Shareware]
  • JMP - Sparse matrix library: 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]
  • 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]
  • JMathTools: A mathematical Java toolbox designed to be easily used and modified for scientific software engineering. [Open source, BSD License]
  • JSpline+: For spline approximation, core matrix operations, and linear system solutions. [Commercial w/demo]
  • Java Financial Library: A library and quick application for financial software. [Open source, LGPL]
  • Java Numerics: Working `group` that offers presentation, news, and libraries related to numerical computing.
  • JeksParser: Parses and computes expressions or functions primarily for use in spreadsheet applications such as the example provided. [Beta Evaluation]
  • Math Parser: Package to parse and evaluate mathematical expressions at runtime. [Commercial]
  • Mathematical expression parser library for Java [GPL]: 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]
  • Mersenne Twister Pseudo Random Number Generator Classes: Offers multiple replacement implementations for java.util.Random. [Open Source]
  • Significant Figures: Handles parsing, rounding, and displaying numbers for scientific applications.

 

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