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/*

* Copyright (c) 1997, 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;

/**

* <p> This interface represents a guard, which is an object that is used

* to protect access to another object.

*

* <p>This interface contains a single method, {@code checkGuard},

* with a single {@code object} argument. {@code checkGuard} is

* invoked (by the GuardedObject {@code getObject} method)

* to determine whether or not to allow access to the object.

*

* @see GuardedObject

*

* @author Roland Schemers

* @author Li Gong

*/

public interface Guard {

/**

* Determines whether or not to allow access to the guarded object

* {@code object}. Returns silently if access is allowed.

* Otherwise, throws a SecurityException.

*

* @param object the object being protected by the guard.

*

* @exception SecurityException if access is denied.

*

*/

void checkGuard(Object object) throws SecurityException;

}