JDK 9 RFR of JDK-8049820: Fix raw and unchecked lint warnings in sun.management

[Mandy Chung]

On 7/9/2014 6:35 PM, Joe Darcy wrote:
> Hi Mandy,
>
> On 07/09/2014 06:26 PM, Mandy Chung wrote:
>>
>> On 7/9/2014 6:10 PM, Joe Darcy wrote:
>>> Hello,
>>>
>>> Another batch of lint warnings removal; this time for
>>>
>>>     8049820: Fix raw and unchecked lint warnings in sun.management
>>>     http://cr.openjdk.java.net/~darcy/8049820.0/
>>
>>  230         @SuppressWarnings("rawtypes")
>>  231         final Class enumClass;
>>
>> Why can't the enumClass field be declared of Class<?> type?
>>
>> Other than that, looks fine.
>> Mandy
>>
>
> My first attempt at generifying this class used Class<?> as you 
> suggest. The problem occurs in the call to the static method 
> Enum.valueOf which has a declaration of
>
>     public static <T extends Enum<T>> T valueOf(Class<T> enumType,
>                                                 String name)
>
> The problem here is the recursive "T extends Enum<T>", following the 
> recursive F-bound of the java.lang.Enum type itself. Using a wildcard 
> for Class<?> doesn't work with this method signature; something like 
> Class<? extends Enum> doesn't work either because the more specific 
> recursive binding is not captured, so I reluctantly fell back to using 
> a raw type.

I see, thanks.  The patch is good to go.
Mandy