RFR 8144675: Add a filtering collector

[Paul Sandoz]

> On 7 Dec 2015, at 03:45, ShinyaYoshida <bitterfoxc at gmail.com> wrote:
> 
> Hi,
> I'd like to wait for the review, but I have a trivial question:
> 
> Which @since is preferred, 1.9 or 9?
> 

@since 9


> For ex, at Optional#or and stream, @since 9 is used.
> On the other hand, at Collectors#flatMap, @since 1.9 is used.
> 

Feel free to update that to 9.

I started using @9 a little while ago in anticipation of the new version-string scheme (http://openjdk.java.net/jeps/223 <http://openjdk.java.net/jeps/223>). I expect there will be a global sweep through the code updating @since tags.

Paul.