https://github.com/fathzer/javaluator

A java infix evaluator based on "Shunting Yard" algorithm.
https://github.com/fathzer/javaluator

evaluate-expressions java-library

Last synced: 6 months ago
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A java infix evaluator based on "Shunting Yard" algorithm.

• Host: GitHub
• URL: https://github.com/fathzer/javaluator
• Owner: fathzer
• License: apache-2.0
• Created: 2019-08-16T17:12:22.000Z (almost 7 years ago)
• Default Branch: master
• Last Pushed: 2025-05-30T17:56:37.000Z (about 1 year ago)
• Last Synced: 2025-08-03T16:46:38.555Z (11 months ago)
• Topics: evaluate-expressions, java-library
• Language: Java
• Homepage: http://javaluator.fathzer.com
• Size: 1.27 MB
• Stars: 36
• Watchers: 2
• Forks: 9
• Open Issues: 2
• Metadata Files:
  • Readme: README.md
  • Contributing: CONTRIBUTING.md
  • License: LICENSE

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README

          
# Javaluator

[![Javadocs](http://javadoc.io/badge/com.fathzer/javaluator.svg)](https://javadoc.io/doc/com.fathzer/javaluator)  [![Maven Central](https://maven-badges.herokuapp.com/maven-central/com.fathzer/javaluator/badge.svg)](https://maven-badges.herokuapp.com/maven-central/com.fathzer/javaluator)  [![Quality Gate Status](https://sonarcloud.io/api/project_badges/measure?project=fathzer_javaluator&metric=alert_status)](https://sonarcloud.io/dashboard?id=fathzer_javaluator)

A java infix evaluator based on "Shunting Yard" algorithm.

Evaluate an arithmetic expression is as simple as:

```

Double result = new DoubleEvaluator().evaluate("(e^3-1)*sin(pi/4)*ln(pi^2)").

```

But Javaluator provides you with much more ...

Key features:

- Functions support, including variable argument count.

- Constants support: e, pi, etc ...

- Variables support: Example sin(x) for x = pi/4.

- Highly configurable: Reduce the built-in operator or function sets, define your own brackets.

- Extensible: Define your own grammar, or extends the existing one.

- Localizable: Define localized names for functions or constants.

- Syntax check

- Small footprint: 26kB, no additional library required.

- Fully documented

Please visit the project's web site to learn more: https://javaluator.fathzer.com

If you use Javaluator in your product, we will be happy to add a link to your product in the Javaluator's web site.