/*
 * Copyright (c) 1998, 2013, Oracle and/or its affiliates. All rights reserved.
 * ORACLE PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
 *
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 */

package java.security;


/**
 * A computation to be performed with privileges enabled, that throws one or
 * more checked exceptions. The computation is performed by invoking
 * {@code AccessController.doPrivileged} on the
 * {@code PrivilegedExceptionAction} object. This interface is
 * used only for computations that throw checked exceptions;
 * computations that do not throw
 * checked exceptions should use {@code PrivilegedAction} instead.
 *
 * @since 1.2
 * @see AccessController
 * @see AccessController#doPrivileged(PrivilegedExceptionAction)
 * @see AccessController#doPrivileged(PrivilegedExceptionAction,
 * AccessControlContext)
 * @see PrivilegedAction
 */

public interface PrivilegedExceptionAction<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 PrivilegedExceptionAction} should document what
 * (if anything) this value represents.
 * @throws Exception an exceptional condition has occurred. Each class
 * that implements {@code PrivilegedExceptionAction} should
 * document the exceptions that its run method can throw.
 * @see AccessController#doPrivileged(PrivilegedExceptionAction)
 * @see AccessController#doPrivileged(PrivilegedExceptionAction,AccessControlContext)
 */

 T run() throws Exception;
}