/*
 
* 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.
 
*
 
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*/

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.
 
*
 
* @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();
}