Package com.sun.jini.action

Class GetPropertyAction

java.lang.Object
com.sun.jini.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 or Security.doPrivileged.

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

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

If the protection domain of the immediate caller of doPrivileged or the protection domain of this class does not imply the permissions necessary for the operation, the behavior is as if the system property is not defined.

Since:
2.0
Author:
Sun Microsystems, Inc.
See Also:

  • Constructor Details

    • 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
      defaultVal - the default value

  • Method Details

    • run

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

      If the system property is defined, then this method returns its value. Otherwise, if a default value was supplied to this object's constructor, then this method returns that default value, or else null is returned.

      Specified by:
      run in interface PrivilegedAction
      Returns:
      the string value of the system property or the default value, or null