Java ScriptEngine supported languages

Here is a script to determine all languages on your system:

import java.util.List;
import javax.script.ScriptEngineManager;
import javax.script.ScriptEngine;
import javax.script.Bindings;
import javax.script.ScriptContext;
import javax.script.ScriptEngineFactory;


public class Test {

public static void main(String[] args)
{
    ScriptEngineManager mgr = new ScriptEngineManager();
    List<ScriptEngineFactory> factories = mgr.getEngineFactories();
    for (ScriptEngineFactory factory : factories)
    {
        System.out.println("ScriptEngineFactory Info");
        String engName = factory.getEngineName();
        String engVersion = factory.getEngineVersion();
        String langName = factory.getLanguageName();
        String langVersion = factory.getLanguageVersion();
        System.out.printf("\tScript Engine: %s (%s)\n", engName, engVersion);
        List<String> engNames = factory.getNames();
        for (String name : engNames)
        {
            System.out.printf("\tEngine Alias: %s\n", name);
        }
        System.out.printf("\tLanguage: %s (%s)\n", langName, langVersion);
        }
    }

}

Hope this helps.

Not in ScriptEngine, but you can still use BSF. From the Apache Commons Bean Scripting Framework, you can find it's Documentation here. -

BSF 2.x supports several scripting languages currently:

• Javascript (using Rhino ECMAScript, from the Mozilla project)
• NetRexx (an extension of the IBM REXX scripting language in Java)
• Commons JEXL
• Python (using Jython)
• Tcl (using Jacl)
• XSLT Stylesheets (as a component of Apache XML project's Xalan and Xerces)

In addition, the following languages are supported with their own BSF engines:

• Java (using BeanShell, from the BeanShell project)
• Groovy
• Groovy Monkey
• JLog (PROLOG implemented in Java)
• JRuby
• JudoScript
• ObjectScript
• ooRexx (Open Object Rexx), using BSF4ooRexx.

The Java ScriptEngine API will work with all JSR-223 Scripting Languages. I haven't found a well documented complete list of these before but this post does a pretty good job, Where can I find a list of available JSR-223 scripting languages? Here is one list from that post,

JSR-223 script engines

• AWK
• BeanShell
• ejs
• FreeMarker
• Groovy
• Jaskell
• Java
• JavaScript
• JavaScript (Web Browser)
• Jelly
• JEP
• Jexl
• jst
• JudoScript
• JUEL
• OGNL
• Pnuts
• Python
• Ruby
• Scheme
• Sleep
• Tcl
• Velocity
• XPath
• XSLT

JSR 223 script engines maintained elsewhere

• JavaFX Script
• ABCL
• AppleScript
• Bex script
• OCaml Scripting Project
• PHP
• PHP (another one)
• Python
• Smalltalk
• CajuScript
• MathEclipse

Most have a special implementation for it to work. For example python alone will not work you need the Jython jar added to the class path. Same for Ruby you'll need JRuby.

There are several other languages available. For instance, Jython (Python implementation in Java). The way to use other languages is by adding the JAR file to CLASSPATH and making a reference to the right name.

For Ruby, there is JRuby. See the following: https://github.com/jruby/jruby/wiki/JavaIntegration

ScriptEngineManager m = new ScriptEngineManager();
ScriptEngine rubyEngine = m.getEngineByName("jruby");