Jep is a Java library for parsing and evaluating mathematical expressions. With this package you can allow your users to enter an arbitrary formula as a string, and instantly evaluate it. Jep supports user defined variables, constants, and functions. A number of common mathematical functions and constants are included.

Features

• Small size (only 260KB as jar archive)
• Fast evaluation
• High precision using BigDecimals
• Includes common math functions and operators
• Supports Boolean expressions
• Extendable and configurable architecture
• Support for strings, vectors and complex numbers
• Support for implicit multiplication
• Allows declared or undeclared variables
• Java 1.5 compatible
• Supports Unicode characters
• Extensive documentation
• Includes JavaCC grammar from which the main classes are generated

Try it!

A trial version of Jep is available for download -- so please download it and give it a try! To purchase a Jep license, visit the Order page for more information.