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  1. import javax.script.*;
  2.  
  3. public class Main {
  4.  
  5.     public static void main(String args[]) {
  6.         ScriptEngineManager manager = new ScriptEngineManager();
  7.         for (ScriptEngineFactory f : manager.getEngineFactories()) {
  8.             printBasicInfo(f);
  9.             System.out.println();
  10.         }
  11.  
  12.         ScriptEngine nashorn = manager.getEngineByName("nashorn");
  13.         if(nashorn != null) {
  14.             System.out.println("Nashorn is present.");
  15.         }
  16.         else {
  17.             System.out.println("Nashorn is not present.");
  18.         }
  19.     }
  20.  
  21.     public static void printBasicInfo(ScriptEngineFactory factory) {
  22.         System.out.println("engine name=" + factory.getEngineName());
  23.         System.out.println("engine version=" + factory.getEngineVersion());
  24.         System.out.println("language name=" + factory.getLanguageName());
  25.         System.out.println("extensions=" + factory.getExtensions());
  26.         System.out.println("language version=" + factory.getLanguageVersion());
  27.         System.out.println("names=" + factory.getNames());
  28.         System.out.println("mime types=" + factory.getMimeTypes());
  29.     }
  30.  
  31. }
Success #stdin #stdout 0.08s 380736KB
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Standard input is empty
stdout
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engine name=Mozilla Rhino
engine version=1.7 release 3 PRERELEASE
language name=ECMAScript
extensions=[js]
language version=1.8
names=[js, rhino, JavaScript, javascript, ECMAScript, ecmascript]
mime types=[application/javascript, application/ecmascript, text/javascript, text/ecmascript]

Nashorn is not present.
https://ideone.com/clsToO
language:
Java (HotSpot 12)
created:
12 years ago
visibility:
public

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