content: /*
   * Copyright (c) 1997, 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.
   *
   * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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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;
  }
  