1 /* 2 * Copyright (c) 1998, 2006, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. Oracle designates this 8 * particular file as subject to the "Classpath" exception as provided 9 * by Oracle in the LICENSE file that accompanied this code. 10 * 11 * This code is distributed in the hope that it will be useful, but WITHOUT 12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 14 * version 2 for more details (a copy is included in the LICENSE file that 15 * accompanied this code). 16 * 17 * You should have received a copy of the GNU General Public License version 18 * 2 along with this work; if not, write to the Free Software Foundation, 19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 20 * 21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 22 * or visit www.oracle.com if you need additional information or have any 23 * questions. 24 */ 25 26 package sun.security.action; 27 28 /** 29 * A convenience class for retrieving the boolean value of a system property 30 * as a privileged action. 31 * 32 * <p>An instance of this class can be used as the argument of 33 * <code>AccessController.doPrivileged</code>. 34 * 35 * <p>The following code retrieves the boolean value of the system 36 * property named <code>"prop"</code> as a privileged action: <p> 37 * 38 * <pre> 39 * boolean b = java.security.AccessController.doPrivileged 40 * (new GetBooleanAction("prop")).booleanValue(); 41 * </pre> 42 * 43 * @author Roland Schemers 44 * @see java.security.PrivilegedAction 45 * @see java.security.AccessController 46 * @since 1.2 47 */ 48 49 public class GetBooleanAction 50 implements java.security.PrivilegedAction<Boolean> { 51 private String theProp; 52 53 /** 54 * Constructor that takes the name of the system property whose boolean 55 * value needs to be determined. 56 * 57 * @param theProp the name of the system property. 58 */ 59 public GetBooleanAction(String theProp) { 60 this.theProp = theProp; 61 } 62 63 /** 64 * Determines the boolean value of the system property whose name was 65 * specified in the constructor. 66 * 67 * @return the <code>Boolean</code> value of the system property. 68 */ 69 public Boolean run() { 70 return Boolean.getBoolean(theProp); 71 } 72 } 73
