sun.security.action
Class GetPropertyAction

java.lang.Object
  sun.security.action.GetPropertyAction

All Implemented Interfaces:

PrivilegedAction

public class GetPropertyAction
extends Object
implements PrivilegedAction

A convenience class for retrieving the string value of a system property as a privileged action.

An instance of this class can be used as the argument of AccessController.doPrivileged.

The following code retrieves the value of the system property named "prop" as a privileged action:

 String s = (String) java.security.AccessController.doPrivileged(
                         new GetPropertyAction("prop"));
 

Since:

JDK1.2

See Also:

PrivilegedAction, AccessController

Constructor Summary

GetPropertyAction(String theProp)
Constructor that takes the name of the system property whose string value needs to be determined.

GetPropertyAction(String theProp, String defaultVal)
Constructor that takes the name of the system property and the default value of that property.

Method Summary

Object

run() Determines the string value of the system property whose name was specified in the constructor.

Methods inherited from class java.lang.Object

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

Constructor Detail

GetPropertyAction

public GetPropertyAction(String theProp)

Constructor that takes the name of the system property whose string value needs to be determined.

Parameters:

theProp - the name of the system property.

GetPropertyAction

public GetPropertyAction(String theProp,
                         String defaultVal)

Constructor that takes the name of the system property and the default value of that property.

Parameters:

theProp - the name of the system property.

defaulVal - the default value.

Method Detail

run

public Object run()

Determines the string value of the system property whose name was specified in the constructor.

Specified by:

run in interface PrivilegedAction

Returns:

the string value of the system property, or the default value if there is no property with that key.

See Also:

AccessController.doPrivileged(PrivilegedAction), AccessController.doPrivileged(PrivilegedAction, AccessControlContext)