/* * Copyright (c) 2009, Oracle and/or its affiliates. All rights reserved. * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. * * This code is free software; you can redistribute it and/or modify it * under the terms of the GNU General Public License version 2 only, as * published by the Free Software Foundation.  Oracle designates this * particular file as subject to the "Classpath" exception as provided * by Oracle in the LICENSE file that accompanied this code. * * This code is distributed in the hope that it will be useful, but WITHOUT * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License * version 2 for more details (a copy is included in the LICENSE file that * accompanied this code). * * You should have received a copy of the GNU General Public License version * 2 along with this work; if not, write to the Free Software Foundation, * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. * * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA * or visit www.oracle.com if you need additional information or have any * questions. */ package sun.security.action; import java.security.Security; /** * A convenience class for retrieving the boolean value of a security property * as a privileged action. * * <p>An instance of this class can be used as the argument of * <code>AccessController.doPrivileged</code>. * * <p>The following code retrieves the boolean value of the security * property named <code>"prop"</code> as a privileged action: <p> * * <pre> * boolean b = java.security.AccessController.doPrivileged *              (new GetBooleanSecurityPropertyAction("prop")).booleanValue(); * </pre> * */public class GetBooleanSecurityPropertyAction        implements java.security.PrivilegedAction<Boolean> {    private String theProp;     /**     * Constructor that takes the name of the security property whose boolean     * value needs to be determined.     *     * @param theProp the name of the security property     */    public GetBooleanSecurityPropertyAction(String theProp) {        this.theProp = theProp;    }     /**     * Determines the boolean value of the security property whose name was     * specified in the constructor.     *     * @return the <code>Boolean</code> value of the security property.     */    public Boolean run() {        boolean b = false;        try {            String value = Security.getProperty(theProp);            b = (value != null) && value.equalsIgnoreCase("true");        } catch (NullPointerException e) {}        return b;    }}