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 | 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.
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https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/nio/channels/CompletionHandler.html