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java.security.GuardedObject翻译

王朝java/jsp·作者佚名  2006-01-09
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java.security

Class GuardedObjectjava.lang.Object

java.security.GuardedObject

All Implemented Interfaces: Serializable public class GuardedObject extends Object implements SerializableA GuardedObject is an object that is used to protect access to another object. GuardedObject是用来保护对另一个对象访问的对象。

A GuardedObject encapsulates a target object and a Guard object, such that access to the target object is possible only if the Guard object allows it. Once an object is encapsulated by a GuardedObject, access to that object is controlled by the getObject method, which invokes the checkGuard method on the Guard object that is guarding access. If access is not allowed, an exception is thrown. GuardedObject封装了一个目标对象和一个Guard对象,这样只有Guard对象允许,才能访问目标对象。 一旦对象被封装至GuardedObject,访问该对象则由getObject方法控制,它调用Guard对象的checkGuard方法 使访问受保护。如果访问不允许,抛出异常。

See Also: Guard, Permission, Serialized FormConstructor Summary

GuardedObject(Object object, Guard guard)

Constructs a GuardedObject using the specified object and guard. 使用指定对象和guard构建一个GuardedObject。

Method Summary

Object

getObject()

Retrieves the guarded object, or throws an exception if access to the guarded object is denied by the guard. 返回受保护对象,如果访问受保护对象被guard拒绝,抛出异常。

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

GuardedObjectpublic GuardedObject(Object object,

Guard guard)

Constructs a GuardedObject using the specified object and guard. If the Guard object is null, then no restrictions will be placed on who can access the object. 使用指定对象和guard构建一个GuardedObject。如果Guard对象为null,则给定对象的访问不受限制。

Parameters: object - the object to be guarded. 被保护的对象。 guard - the Guard object that guards access to the object. 保护对象访问的Guard对象。Method Detail

getObjectpublic Object getObject()

throws SecurityException

Retrieves the guarded object, or throws an exception if access to the guarded object is denied by the guard. 返回受保护对象,如果访问受保护对象被guard拒绝,抛出异常。

Returns: the guarded object. 受保护对象。 Throws: SecurityException - if access to the guarded object is denied. 如果访问受保护对象被拒绝抛出。[/url][url=file:///F:/资料/文字资料/j2sdk-1_4_2-doc/docs/api/overview-summary.html]Overview

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For further API reference and developer documentation, see Java 2 SDK SE Developer Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples. Copyright 2003 Sun Microsystems, Inc. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.

 
 
 
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