a patch for new default methods in Map + more

[Remi Forax]

On 01/04/2013 07:09 PM, Doug Lea wrote:
> On 01/04/13 12:11, Peter Levart wrote:
>> Hi,
>>
>> I propose a patch for some new default methods in j.u.Map and some more:
>>
>> http://dl.dropbox.com/u/101777488/jdk8-lambda/Map/webrev.02/index.html
>>
> Thanks for redoing these as a webrev!

Peter, you should not add Objects.equals() here, you can use it if you 
know that a key will be null,
but not if you don't know. You have to write the null check in the 
method and let the VM do the profiling.
With that, users that never use a HashMap with null key may not pay the 
extra cost of the null check.
If you use Objects.equals, because it will be also used in a method with 
a value that is null, the VM will always do the check.

Rémi