CompletionHandler
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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.
Public Method Summary
|
abstract
void
|
completed(V result, A attachment)
Invoked when an operation has completed.
|
|
abstract
void
|
|
Public Methods
public
abstract
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.
|
public
abstract
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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Last updated 2024-07-10 UTC.
[[["Easy to understand","easyToUnderstand","thumb-up"],["Solved my problem","solvedMyProblem","thumb-up"],["Other","otherUp","thumb-up"]],[["Missing the information I need","missingTheInformationINeed","thumb-down"],["Too complicated / too many steps","tooComplicatedTooManySteps","thumb-down"],["Out of date","outOfDate","thumb-down"],["Samples / code issue","samplesCodeIssue","thumb-down"],["Other","otherDown","thumb-down"]],["Last updated 2024-07-10 UTC."],[[["\u003cp\u003e\u003ccode\u003eCompletionHandler\u003c/code\u003e is an interface used for handling the results of asynchronous I/O operations in Java NIO.\u003c/p\u003e\n"],["\u003cp\u003eIt provides two methods: \u003ccode\u003ecompleted\u003c/code\u003e, invoked upon successful operation completion, and \u003ccode\u003efailed\u003c/code\u003e, invoked when an operation fails.\u003c/p\u003e\n"],["\u003cp\u003eImplementations of these methods should be designed for quick execution to avoid blocking the invoking thread.\u003c/p\u003e\n"],["\u003cp\u003eBoth methods receive an attachment object that was associated with the I/O operation when it was initiated.\u003c/p\u003e\n"]]],[],null,["public interface **CompletionHandler** \nA handler for consuming the result of an asynchronous I/O operation.\n\nThe asynchronous channels defined in this package allow a completion\nhandler to be specified to consume the result of an asynchronous operation.\nThe [completed](../../../../reference/java/nio/channels/CompletionHandler.html#completed(V,%20A)) method is invoked when the I/O operation\ncompletes successfully. The [failed](../../../../reference/java/nio/channels/CompletionHandler.html#failed(java.lang.Throwable,%20A)) method is invoked if the\nI/O operations fails. The implementations of these methods should complete\nin a timely manner so as to avoid keeping the invoking thread from dispatching\nto other completion handlers. \n\nPublic Method Summary\n\n|---------------|---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------|\n| abstract void | [completed](../../../../reference/java/nio/channels/CompletionHandler.html#completed(V,%20A))(V result, A attachment) Invoked when an operation has completed. |\n| abstract void | [failed](../../../../reference/java/nio/channels/CompletionHandler.html#failed(java.lang.Throwable,%20A))([Throwable](../../../../reference/java/lang/Throwable.html) exc, A attachment) Invoked when an operation fails. |\n\nPublic Methods \n\npublic abstract void\n**completed**\n(V result, A attachment) \nInvoked when an operation has completed. \n\nParameters\n\n| result | The result of the I/O operation. |\n| attachment | The object attached to the I/O operation when it was initiated. |\n|------------|-----------------------------------------------------------------|\n\npublic abstract void\n**failed**\n([Throwable](../../../../reference/java/lang/Throwable.html) exc, A attachment) \nInvoked when an operation fails. \n\nParameters\n\n| exc | The exception to indicate why the I/O operation failed |\n| attachment | The object attached to the I/O operation when it was initiated. |\n|------------|-----------------------------------------------------------------|"]]
