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JRuby is an open source programming language created in 2001.

#1739on PLDB 23Years Old

JRuby is an implementation of the Ruby programming language atop the Java Virtual Machine, written largely in Java. It is free software released under a three-way EPL/GPL/LGPL license. JRuby is tightly integrated with Java to allow the embedding of the interpreter into any Java application with full two-way access between the Java and the Ruby code (similar to Jython for the Python language). Read more on Wikipedia...

Example from Wikipedia:
//Example using JSR 233 Scripting for Java 6 ScriptEngineManager mgr = new ScriptEngineManager(); ScriptEngine rbEngine = mgr.getEngineByExtension("rb"); try { rbEngine.eval("puts 'Hello World!'"); } catch (ScriptException ex) { ex.printStackTrace(); }

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