/* * Copyright (c) 1998, 2004, Oracle and/or its affiliates. All rights reserved. * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms. * * * * * * * * * * * * * * * * * * * * */ package java.security; /** * A computation to be performed with privileges enabled. The computation is * performed by invoking <code>AccessController.doPrivileged</code> on the * <code>PrivilegedAction</code> object. This interface is used only for * computations that do not throw checked exceptions; computations that * throw checked exceptions must use <code>PrivilegedExceptionAction</code> * instead. * * @see AccessController * @see AccessController#doPrivileged(PrivilegedAction) * @see PrivilegedExceptionAction */ public interface PrivilegedAction<T> { /** * Performs the computation. This method will be called by * <code>AccessController.doPrivileged</code> after enabling privileges. * * @return a class-dependent value that may represent the results of the * computation. Each class that implements * <code>PrivilegedAction</code> * should document what (if anything) this value represents. * @see AccessController#doPrivileged(PrivilegedAction) * @see AccessController#doPrivileged(PrivilegedAction, * AccessControlContext) */ T run(); }