Are there any downsides if we add Enum.name() to the list of constant expressions in the JLS?

[Kasper Nielsen]

Hi, I know this feature has been requested a number of times. But I want to
add one more usecase. There is common pattern in many frameworks of
specifying a factory class in an annotation a.la.

 @SomeFrameworkAnnotation(factory = MyAppFactory.class)

Unfortunately, this pattern requires some more effort, if you want to use
it together with modules. Either you need to open the package or handoff a
Lookup object to the framework in some way. While this isn't super
complicated, it would ease the on-ramp if you could simply use

 @SomeFrameworkAnnotation(factory = MyAppFactory::new)

 I know this type of "annotation programming" aren't really used in the
JDK, but in Java's wider ecosystem I see it a lot.

 Best, Kasper


> Idea: What about allowing lambda values for Class-valued annotation
> properties when the Class is a functional interface?
>
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