程序包 java.security

类 GuardedObject

java.lang.Object

java.security.GuardedObject

所有已实现的接口:

Serializable

public class GuardedObject
extends Object
implements Serializable

A GuardedObject is an object that is used to protect access to another object.

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.

另请参阅:

Guard, Permission, 序列化表格

构造器概要

构造器

构造器	说明
GuardedObject(Object object, Guard guard)	Constructs a GuardedObject using the specified object and guard.

方法概要

限定符和类型	方法	说明
Object	getObject()	Retrieves the guarded object, or throws an exception if access to the guarded object is denied by the guard.

从类继承的方法 java.lang.Object

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

构造器详细资料

GuardedObject

public 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.

参数:

object - the object to be guarded.

guard - the Guard object that guards access to the object.

方法详细资料

getObject

public 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:

the guarded object.

抛出:

SecurityException - if access to the guarded object is denied.