Optional used as method argument?

[Wang Weijun]

> 在 2015年10月2日，下午9:51，Sean Mullan <sean.mullan at oracle.com> 写道：
> 
> 
> 
> On 10/2/15 9:27 AM, Wang Weijun wrote:
>> 
>>> 在 2015年10月2日，下午8:49，Roger Riggs <Roger.Riggs at oracle.com> 写道：
>>> 
>>> +1
>>> 
>>> The "no such value" makes me curious about the context.
>>> The @param tag really should be saying something about the parameter.
>> 
>> In fact, I'm working on a method which is similar to
>> 
>>   /*
>>    * Generates some random bytes.
>>    *
>>    * @param n requested random value in bytes.
>>    * @param extraEntropy optional entropy caller can provide, null if none.
>>    */
>>   byte[] getRandom(int n, byte[] extraEntropy)
>> 
>> Most caller won't be able to provide extra entropy, but if one does have a dedicated device which can generate fresh entropy, it is welcome.
> 
> Alternatively, you could just add an overloaded method, and not allow a null value for extraEntropy:
> 
> byte[] getRandom(int n)
> byte[] getRandom(int n, byte[] extraEntropy)

Accepted.

Thanks
Max

> 
> --Sean