Here you can find the source of isNashornScript(final String className)
private static boolean isNashornScript(final String className)
//package com.java2s; /*/* ww w . j a v a2 s . c o m*/ * Copyright 2015, 2016 Axel Faust * * Licensed under the Eclipse Public License (EPL), Version 1.0 (the "License"); you may not use * this file except in compliance with the License. You may obtain a copy of the License at * * https://www.eclipse.org/legal/epl-v10.html * * Unless required by applicable law or agreed to in writing, software distributed under the * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, * either express or implied. See the License for the specific language governing permissions * and limitations under the License. */ public class Main { private static boolean isNashornScript(final String className) { // there is apparently no other way then to check for Nashorn-internal class name // unfortunately, this can be broken by any changes in Nashorn return className.startsWith("jdk.nashorn.internal.scripts.Script$"); } }