利用できるスクリプトエンジンを列挙する
ScriptEngineManager mgr = new ScriptEngineManager(); List<ScriptEngineFactory> factories = mgr.getEngineFactories(); for(ScriptEngineFactory f:factories){ List<String> engNames = f.getNames(); for(String name: engNames) { System.out.printf("Engine : %s\n", name); } }