Buffered IO rudimentary question

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jmw - 07 Mar 2007 16:26 GMT

If you have a reference to a buffered output stream, and you call
close(), will flush() automatically be called?

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Chris Uppal - 07 Mar 2007 16:51 GMT

> If you have a reference to a buffered output stream, and you call
> close(), will flush() automatically be called?

Yes.

-- chris

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John W. Kennedy - 07 Mar 2007 17:24 GMT

> If you have a reference to a buffered output stream, and you call
> close(), will flush() automatically be called?

Yes. (This behavior is inherited from FilterOutputStream.)

What you /cannot/ assume is that program shutdown and or finalize() will
do this.

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John W. Kennedy
"The blind rulers of Logres
Nourished the land on a fallacy of rational virtue."
-- Charles Williams. "Taliessin through Logres: Prelude"

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Knute Johnson - 07 Mar 2007 17:30 GMT

> If you have a reference to a buffered output stream, and you call
> close(), will flush() automatically be called?

Read the docs. BufferedOutputStream extends FilterOutputStream.

"close

public void close()
throws IOException

Closes this output stream and releases any system resources
associated with the stream.

The close method of FilterOutputStream calls its flush method, and
then calls the close method of its underlying output stream. "

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Knute Johnson
email s/nospam/knute/

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Buffered IO rudimentary question

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