| /* |
| * Copyright (c) 1998, 2013, 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 java.security; |
| |
| |
| /** |
| * A computation to be performed with privileges enabled. The computation is |
| * performed by invoking {@code AccessController.doPrivileged} on the |
| * {@code PrivilegedAction} object. This interface is used only for |
| * computations that do not throw checked exceptions; computations that |
| * throw checked exceptions must use {@code PrivilegedExceptionAction} |
| * instead. |
| * |
| * @since 1.2 |
| * @see AccessController |
| * @see AccessController#doPrivileged(PrivilegedAction) |
| * @see PrivilegedExceptionAction |
| */ |
| |
| public interface PrivilegedAction<T> { |
| /** |
| * Performs the computation. This method will be called by |
| * {@code AccessController.doPrivileged} after enabling privileges. |
| * |
| * @return a class-dependent value that may represent the results of the |
| * computation. Each class that implements |
| * {@code PrivilegedAction} |
| * should document what (if anything) this value represents. |
| * @see AccessController#doPrivileged(PrivilegedAction) |
| * @see AccessController#doPrivileged(PrivilegedAction, |
| * AccessControlContext) |
| */ |
| T run(); |
| } |