An
exception
of this type is thrown to indicate that the result of a computation
cannot be retrieved because the computation was canceled. The
get( ) method of the Future
interface may throw a CancellationException, for
example.
Figure 16-74. java.util.concurrent.CancellationException
public class
CancellationException extends IllegalStateException {
// Public Constructors
public
CancellationException ( );
public
CancellationException (String
message );
}