/* |
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* Copyright (c) 1998, 2019, Oracle and/or its affiliates. All rights reserved. |
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
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* |
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* This code is free software; you can redistribute it and/or modify it |
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* under the terms of the GNU General Public License version 2 only, as |
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* published by the Free Software Foundation. Oracle designates this |
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* particular file as subject to the "Classpath" exception as provided |
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* by Oracle in the LICENSE file that accompanied this code. |
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* |
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* This code is distributed in the hope that it will be useful, but WITHOUT |
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
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* version 2 for more details (a copy is included in the LICENSE file that |
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* accompanied this code). |
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* |
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* You should have received a copy of the GNU General Public License version |
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* 2 along with this work; if not, write to the Free Software Foundation, |
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
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* |
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
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* or visit www.oracle.com if you need additional information or have any |
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* questions. |
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*/ |
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package java.security; |
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/** |
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* A computation to be performed with privileges enabled, that throws one or |
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* more checked exceptions. The computation is performed by invoking |
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* {@code AccessController.doPrivileged} on the |
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* {@code PrivilegedExceptionAction} object. This interface is |
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* used only for computations that throw checked exceptions; |
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* computations that do not throw |
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* checked exceptions should use {@code PrivilegedAction} instead. |
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* |
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* @since 1.2 |
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* @see AccessController |
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* @see AccessController#doPrivileged(PrivilegedExceptionAction) |
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* @see AccessController#doPrivileged(PrivilegedExceptionAction, |
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* AccessControlContext) |
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* @see PrivilegedAction |
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*/ |
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@FunctionalInterface |
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public interface PrivilegedExceptionAction<T> { |
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/** |
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* Performs the computation. This method will be called by |
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* {@code AccessController.doPrivileged} after enabling privileges. |
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* |
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* @return a class-dependent value that may represent the results of the |
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* computation. Each class that implements |
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* {@code PrivilegedExceptionAction} should document what |
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* (if anything) this value represents. |
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* @throws Exception an exceptional condition has occurred. Each class |
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* that implements {@code PrivilegedExceptionAction} should |
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* document the exceptions that its run method can throw. |
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* @see AccessController#doPrivileged(PrivilegedExceptionAction) |
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* @see AccessController#doPrivileged(PrivilegedExceptionAction,AccessControlContext) |
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*/ |
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T run() throws Exception; |
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} |