Class GuardedObject

java.lang.Object

java.security.GuardedObject

All Implemented Interfaces:: 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.

Since:

1.2

See Also:

Constructor Summary

Constructor	Description
`GuardedObject(Object object, Guard guard)`	Constructs a GuardedObject using the specified object and guard.

Method Summary

Modifier and Type	Method	Description
`Object`	`getObject()`	Retrieves the guarded object, or throws an exception if access to the guarded object is denied by the guard.

Methods declared in class Object

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

Modifier and Type	Method	Description
`protected Object`	`clone()`	Creates and returns a copy of this object.
`boolean`	`equals(Object obj)`	Indicates whether some other object is "equal to" this one.
`protected void`	`finalize()`	Deprecated, for removal: This API element is subject to removal in a future version. Finalization is deprecated and subject to removal in a future release.
`final Class<?>`	`getClass()`	Returns the runtime class of this `Object`.
`int`	`hashCode()`	Returns a hash code value for this object.
`final void`	`notify()`	Wakes up a single thread that is waiting on this object's monitor.
`final void`	`notifyAll()`	Wakes up all threads that are waiting on this object's monitor.
`String`	`toString()`	Returns a string representation of the object.
`final void`	`wait()`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted.
`final void`	`wait(long timeoutMillis)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.
`final void`	`wait(long timeoutMillis, int nanos)`	Causes the current thread to wait until it is awakened, typically by being notified or interrupted, or until a certain amount of real time has elapsed.

Constructor Details

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.

Parameters:: object - the object to be guarded.; guard - the Guard object that guards access to the object.

Method Details

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.

Returns:: the guarded object.
Throws:: SecurityException - if access to the guarded object is denied.

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