Jep Java GPL

The official Jep - Java Expression Parser GPL release

Looking for the latest features? Check out the commercial version (Jep 4.x) with active development, advanced features, and enterprise support. Latest release: February 2026

View the documentation - http://htmlpreview.github.io/?https://github.com/nathanfunk/jep-java-gpl/blob/master/doc/html/index.html

Jep Java parses and evaluates mathematical expressions with only a few lines of code. This package allows your users to enter a 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.

Maven Central

Coordinates:

• groupId: io.github.nathanfunk
• artifactId: jep
• version: 2.4.5

Maven (pom.xml):

<dependency>
	<groupId>io.github.nathanfunk</groupId>
	<artifactId>jep</artifactId>
	<version>2.4.5</version>
</dependency>

Gradle (Groovy DSL):

dependencies {
	implementation 'io.github.nathanfunk:jep:2.4.5'
}

Gradle (Kotlin DSL):

dependencies {
	implementation("io.github.nathanfunk:jep:2.4.5")
}

Features

• Small size
• Fast evaluation
• 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
• Extensive documentation
• Includes JavaCC grammar from which the main classes are generated

GPL vs Commercial Versions

This repository contains the open source GPL version of Jep, suitable for projects compatible with GPL licensing.

For production applications and advanced features, the commercial version offers:

Feature	GPL (2.x)	Commercial (4.x)
Active Development	Stable/Mature	✅ Latest: Feb 2026
Basic Evaluation	✅	✅
Performance	Good	⚡ Significantly Faster
Precision	Standard	✅ BigDecimal Support
Java Compatibility	Java 1.5+	✅ Java 8 - 17+
Extensions	Basic	✅ Symbolic ops, matrices, more
Enterprise Support	Community	✅ Available
License	GPL	Commercial

Commercial Version: http://www.singularsys.com/jep
Try it: Download Trial | Features | Purchase

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License: GNU General Public License (GPL)