JDK 8 code review request for 8005298 Add FunctionalInterface type to the core libraries

Joe Darcy joe.darcy at oracle.com
Wed Jan 16 06:54:17 UTC 2013

Hi Florian,

On 1/10/2013 1:23 AM, Florian Weimer wrote:
> On 01/08/2013 10:24 PM, Joe Darcy wrote:
>> As discussed over on one of the Project Lambda lists [1], we're adding
>> an interface type to the platform to explicitly mark interface types as
>> being functional interfaces suitable for use in lambda expressions.
>> Please review the addition of this new type:
>>      http://cr.openjdk.java.net/~darcy/8005298.0/
> Shouldn't this annotation have @Retention(RetentionPolicy.SOURCE), 
> similar to the @Override annotation?

No; we intentionally made this annotation have runtime retention to 
allow it to also be queried to various tools at runtime, etc.



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