GuardedObject (Java SE 9 & JDK 9 ) (original) (raw)

• java.lang.Object

• • java.security.GuardedObject

• All Implemented Interfaces:
  [Serializable](../../java/io/Serializable.html "interface in java.io")

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 thecheckGuard method on the Guard object that is guarding access. If access is not allowed, an exception is thrown.
Since:
1.2
See Also:
Guard, Permission, Serialized Form

• • Constructor Summary

  Constructors

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

  • Method Summary

  All Methods Instance Methods Concrete Methods

  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 inherited from class java.lang.[Object](../../java/lang/Object.html "class in java.lang")  
     `[clone](../../java/lang/Object.html#clone--), [equals](../../java/lang/Object.html#equals-java.lang.Object-), [finalize](../../java/lang/Object.html#finalize--), [getClass](../../java/lang/Object.html#getClass--), [hashCode](../../java/lang/Object.html#hashCode--), [notify](../../java/lang/Object.html#notify--), [notifyAll](../../java/lang/Object.html#notifyAll--), [toString](../../java/lang/Object.html#toString--), [wait](../../java/lang/Object.html#wait--), [wait](../../java/lang/Object.html#wait-long-), [wait](../../java/lang/Object.html#wait-long-int-)`

• • Constructor Detail

     * #### GuardedObject  
     public GuardedObject​([Object](../../java/lang/Object.html "class in java.lang") object,  
                          [Guard](../../java/security/Guard.html "interface in java.security") 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 Detail

    * #### getObject  
    public [Object](../../java/lang/Object.html "class in java.lang") getObject​()  
                     throws [SecurityException](../../java/lang/SecurityException.html "class in java.lang")  
    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](../../java/lang/SecurityException.html "class in java.lang")` \- if access to the guarded object is denied.

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