Interface CompletionHandler<V,A>
- Type Parameters:
-
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>
A handler for consuming the result of an asynchronous I/O operation.
The asynchronous channels defined in this package allow a completion handler to be specified to consume the result of an asynchronous operation. The 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.
- Since:
- 1.7
Methods
| Modifier and Type | Method and Description |
|---|---|
void |
completed(V result,
A attachment) Invoked when an operation has completed. |
void |
failed(Throwable exc,
A attachment) Invoked when an operation fails. |
Methods
completed
void completed(V result,
A attachment) Invoked when an operation has completed.
- Parameters:
-
result- The result of the I/O operation. -
attachment- The object attached to the I/O operation when it was initiated.
failed
void failed(Throwable exc,
A attachment) Invoked when an operation fails.
- Parameters:
-
exc- The exception to indicate why the I/O operation failed -
attachment- The object attached to the I/O operation when it was initiated.
© 1993, 2020, Oracle and/or its affiliates. All rights reserved.
Documentation extracted from Debian's OpenJDK Development Kit package.
Licensed under the GNU General Public License, version 2, with the Classpath Exception.
Various third party code in OpenJDK is licensed under different licenses (see Debian package).
Java and OpenJDK are trademarks or registered trademarks of Oracle and/or its affiliates.
https://docs.oracle.com/javase/8/docs/api/java/nio/channels/CompletionHandler.html