Here you can find the source of checkDoAsPermission()
private static void checkDoAsPermission()
//package com.java2s; /**/*from w ww. ja v a 2 s .com*/ * Copyright 2017 StreamSets Inc. * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * 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. */ import javax.security.auth.AuthPermission; public class Main { private static final AuthPermission DO_AS_PERMISSION = new AuthPermission("doAs"); private static void checkDoAsPermission() { SecurityManager manager = System.getSecurityManager(); if (manager != null) { manager.checkPermission(DO_AS_PERMISSION); } } }