/* * Copyright (c) 1998, 2006, 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; /** * A convenience class for retrieving the integer value of a system property * as a privileged action. * *
An instance of this class can be used as the argument of
* AccessController.doPrivileged
.
*
*
The following code retrieves the integer value of the system
* property named "prop"
as a privileged action. Since it does
* not pass a default value to be used in case the property
* "prop"
is not defined, it has to check the result for
* null
:
* *
* Integer tmp = java.security.AccessController.doPrivileged * (new sun.security.action.GetIntegerAction("prop")); * int i; * if (tmp != null) { * i = tmp.intValue(); * } ** *
The following code retrieves the integer value of the system
* property named "prop"
as a privileged action, and also passes
* a default value to be used in case the property "prop"
is not
* defined:
* *
* int i = ((Integer)java.security.AccessController.doPrivileged( * new GetIntegerAction("prop", 3))).intValue(); ** * @author Roland Schemers * @see java.security.PrivilegedAction * @see java.security.AccessController * @since 1.2 */ public class GetIntegerAction implements java.security.PrivilegedAction
If there is no property of the specified name, or if the property
* does not have the correct numeric format, then an Integer
* object representing the default value that was specified in the
* constructor is returned, or null
if no default value was
* specified.
*
* @return the Integer
value of the property.
*/
public Integer run() {
Integer value = Integer.getInteger(theProp);
if ((value == null) && defaultSet)
return new Integer(defaultVal);
return value;
}
}