RFR(s): 8072726: add adapter to convert Enumeration to Iterator

[Remi Forax]

Hi Stuart,
this change is pretty cool,

In the javadoc of Iterator instead of:
   Iterable<Permission> permsIterable = () -> pc.elements().asIterator();
one can write:
   Iterable<Permission> permsIterable = pc.elements()::asIterator;

and I wonder if an example with NetworkInterface.getNetworkInterfaces() 
is not better,
I'm not sure a lot of people have to play with permissions outside 
people of this list.

and for the implementation of asIterator, I think the code can be 
written like this:
    default Iterator<E> asIterator() {
         return new Iterator<>() {
             @Override public boolean hasNext() {
                 return hasMoreElements();
             }
             @Override public E next() {
                 return nextElement();
             }
         };
     }

using diamond inference on inner-classes (I think the patch that allows 
that was integrated) and making calls to Enumeration.this implicit.

regards,
Rémi

On 05/16/2015 02:37 AM, Stuart Marks wrote:
> Hi all,
>
> Please review this small API enhancement to add a default method 
> "asIterator()" to Enumeration that converts it into an Iterator.
>
> Webrev:
>
>     http://cr.openjdk.java.net/~smarks/reviews/8072726/webrev.0/
>
> Bug:
>
>     https://bugs.openjdk.java.net/browse/JDK-8072726
>
> Thanks,
>
> s'marks