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Expresso - Java Expression Evaluator

Expresso is a lightweight, zero-dependency Java expression evaluator library that allows you to evaluate dynamic expressions in your Java applications.

Features​

  • Zero external dependencies - pure Java implementation
  • Simple and intuitive expression syntax
  • Support for variables, literals, and function calls
  • Property access on objects and collections
  • Null-safe property access and array access
  • Null coalescing operator for default values
  • Built-in string, math, and logic functions
  • Custom function registration
  • Type-safe evaluation
  • Comprehensive error handling

Quick Start​

Add Expresso to your project using Maven:

<dependency>
    <groupId>work.ghassen</groupId>
    <artifactId>expresso</artifactId>
    <version>1.0.0</version>
</dependency>

Requirements​

  • Java 17 or higher
  • Maven 3.6 or higher (for building)