Jruby Jar [2021] Download File

As of early 2026, the JRuby project maintains two primary release tracks based on Ruby compatibility:

Choosing the right download depends on how you intend to use JRuby: JRuby.orghttps://www.jruby.org Getting Started — JRuby.org jruby jar download

: The most recent major release, targeting Ruby 4.0 compatibility . As of early 2026, the JRuby project maintains

: A stable point release targeting Ruby 3.4 compatibility . Types of JRuby JAR Downloads This integration offers powerful benefits, such as access

A JRuby JAR download is the primary way to obtain a Java-based implementation of the Ruby programming language, allowing you to run Ruby code on the Java Virtual Machine (JVM). This integration offers powerful benefits, such as access to extensive Java libraries, true parallel threading without a Global Interpreter Lock (GIL), and the ability to embed Ruby as a scripting engine within larger Java applications. Latest Stable Versions (2026)