public interface PrivilegedAction<T>
run method that
executes a privileged operation. This method is called by
AccessController.doPrivileged() after that method
activiates the required privileges.AccessController,
PrivilegedExceptionActionT run()
AccessController.doPrivileged().AccessController.doPrivileged(PrivilegedAction),
AccessController.doPrivileged(PrivilegedAction, AccessControlContext)