org.classpath.icedtea.java.nio.channels
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 cancelled method is invoked when the I/O operation is cancelled by invoking the cancel method. 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

void	cancelled(A attachment) Invoked when an operation is cancelled by invoking the cancel method.
void	completed(V result, A attachment) Invoked when an operation has completed.
void	failed(java.lang.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(java.lang.Throwable exc,
            A attachment)

Invoked when an operation fails.

Parameters:

exc - The exception

attachment - The object attached to the I/O operation when it was initiated.

cancelled

void cancelled(A attachment)

Invoked when an operation is cancelled by invoking the cancel method.

Parameters:

attachment - The object attached to the I/O operation when it was initiated.