V - The result type of the I/O operation
A - The type of the object attached to the I/O operation
public interface CompletionHandler<V,A>
The asynchronous channels defined in this package allow a completion
handler to be specified to consume the result of an asynchronous operation.
completed method is invoked when the I/O operation
completes successfully. The
failed method is invoked if the
I/O operations fails. The implementations of these methods should complete
in a timely manner so as to avoid keeping the invoking thread from dispatching
to other completion handlers.
result - The result of the I/O operation.
attachment - The object attached to the I/O operation when it was initiated.
Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2017, Oracle and/or its affiliates. 500 Oracle Parkway
Redwood Shores, CA 94065 USA. All rights reserved.