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

Method Summary

All Methods Instance Methods Abstract 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.

Method Detail

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.