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https://issues.apache.org/jira/browse/IO-303?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13210275#comment-13210275
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Gary D. Gregory commented on IO-303:
------------------------------------

If both close() methods throw an exception, which exception does the method 
throw? I am guessing the first.

                
> TeeOutputStream fails executing branch.close() when main.close() raised an 
> exception
> ------------------------------------------------------------------------------------
>
>                 Key: IO-303
>                 URL: https://issues.apache.org/jira/browse/IO-303
>             Project: Commons IO
>          Issue Type: Bug
>          Components: Streams/Writers
>    Affects Versions: 2.1
>            Reporter: Fabian Barney
>              Labels: close, stream
>
> TeeOutputStream.close() looks like this:
> {code:title=TeeOutputStream.java|borderStyle=solid}
>     /**
>      * Closes both streams. 
>      * @throws IOException if an I/O error occurs
>      */
>     @Override
>     public void close() throws IOException {
>         super.close();
>         this.branch.close();
>     }
> {code} 
> It is obvious that {{this.branch.close()}} is not executed when 
> {{super.close()}} raises an exception. {{super.close()}} may in fact raise an 
> IOException since {{ProxyOutputStream.handleIOException(IOException)}} is not 
> overridden.

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