Ask for review: java.io.Ouputs

[Alan Bateman]

Xueming Shen wrote:
> Alan Bateman wrote:
>>
>>>
>>> (2)Is it really necessary to check "Charset.isSupproted()"? The csn 
>>> will be checked when the
>>> Charset is created later anyway, why do lookup twice. Yes, 
>>> understood it can catch the problem
>>> 1-2 step(s) earlier, I double you want to pay that price.
>> All parameters need to be checked before the file is created (or 
>> truncated).
>
> Did not consider that:-) an alternative is to get the encoder first 
> then the file creation.
Yes, that is the right thing to do and this also ensures that the 
encoder has the default action to report errors.

-Alan.