FilterOutputStream.close() throws exception from flush()

Alan Bateman Alan.Bateman at
Fri Feb 10 13:46:48 UTC 2012

On 10/02/2012 13:09, Alex Lam S.L. wrote:
> Hi there,
> I have some code which calls FilterOutputStream.close(), which calls
> the underlying OutputStream.flush() which throws IOException.
> With previous versions of JavaSE, close() returns successfully without
> any problems.
> Using JDK8-b24, I get an IOException which is propagated from flush().
> Is there any reason for this change in behaviour?
> Regards,
> Alex.
This was deliberate change as FilterOutputStream.close was silently 
ignoring the exception from the flush (a serious bug in my view). In the 
original discussion [1] I noted that we may have to consider a 
compatible switch in the event that it causes problems for applications 
that don't expect close to fail. You may be the first.



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