reflectpermission.java

来自「This is a resource based on j2me embedde」· Java 代码 · 共 95 行

/*
 * @(#)ReflectPermission.java	1.21 06/10/10
 *
 * Copyright  1990-2008 Sun Microsystems, Inc. All Rights Reserved.  
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER  
 *   
 * This program 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.   
 *   
 * This program 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 at /legal/license.txt).   
 *   
 * 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 Sun Microsystems, Inc., 4150 Network Circle, Santa  
 * Clara, CA 95054 or visit www.sun.com if you need additional  
 * information or have any questions. 
 *
 */

package java.lang.reflect;

/**
 * The Permission class for reflective operations.  A
 * ReflectPermission is a <em>named permission</em> and has no
 * actions.  The only name currently defined is <tt>suppressAccessChecks</tt>,
 * which allows suppressing the standard Java language access checks
 * -- for public, default (package) access, protected, and private
 * members -- performed by reflected objects at their point of use.
 * <P>
 * The following table
 * provides a summary description of what the permission allows,
 * and discusses the risks of granting code the permission.
 * <P>
 *
 * <table border=1 cellpadding=5 summary="Table shows permission target name, what the permission allows, and associated risks">
 * <tr>
 * <th>Permission Target Name</th>
 * <th>What the Permission Allows</th>
 * <th>Risks of Allowing this Permission</th>
 * </tr>
 *
 * <tr>
 *   <td>suppressAccessChecks</td>
 *   <td>ability to access
 * fields and invoke methods in a class. Note that this includes
 * not only public, but protected and private fields and methods as well.</td>
 *   <td>This is dangerous in that information (possibly confidential) and
 * methods normally unavailable would be accessible to malicious code.</td>
 * </tr>
 *
 * </table>
 *
 * @see java.security.Permission
 * @see java.security.BasicPermission
 * @see AccessibleObject
 * @see Field#get
 * @see Field#set
 * @see Method#invoke
 * @see Constructor#newInstance
 *
 * @since 1.2
 */
public final
class ReflectPermission extends java.security.BasicPermission {

    /**
     * Constructs a ReflectPermission with the specified name.
     *
     * @param name the name of the ReflectPermission
     */
    public ReflectPermission(String name) {
	super(name);
    }

    /**
     * Constructs a ReflectPermission with the specified name and actions.
     * The actions should be null; they are ignored.
     *
     * @param name the name of the ReflectPermission
     * @param actions should be null.
     */
    public ReflectPermission(String name, String actions) {
	super(name, actions);
    }

}