RFR: 8215401: Add isEmpty default method to CharSequence

[Claes Redestad]

Hi Roger,

sure, added Emptiness.java with a few sanity tests.

/Claes

On 2020-05-19 00:29, Roger Riggs wrote:
> Hi Claes,
> 
> Though it does not look like it could be any simpler, there should 
> probably be a test.
> Checking consistency with the existing implementations of 
> CharSequence.length()
> and a custom subtype.
> 
> Thanks, Roger
> 
> 
> On 5/18/20 4:48 PM, Claes Redestad wrote:
>> Hi,
>>
>> let's add an isEmpty default method to CharSequence!
>>
>> Webrev: http://cr.openjdk.java.net/~redestad/8215401/open.00/
>> RFE:    https://bugs.openjdk.java.net/browse/JDK-8215401
>> CSR:    https://bugs.openjdk.java.net/browse/JDK-8215402
>>
>> Testing: tier1-3
>>
>> /Claes
>