gistfile1.java

    private void hackScriptEngine(FXMLLoader loader) {
        try {
            Field fse = loader.getClass().getDeclaredField("scriptEngine");
            fse.setAccessible(true);
            scriptEngine = (ScriptEngine) fse.get(loader);
        } catch (IllegalAccessException | NoSuchFieldException | SecurityException ex) {
            LOGGER.log(Level.SEVERE, null, ex);
        }
    }