ClassLoader::getPlatformResource*() methods
Richard Opalka
ropalka at redhat.com
Wed Aug 31 11:49:43 UTC 2016
Hi Alan,
On 08/31/2016 01:12 PM, Alan Bateman wrote:
> On 31/08/2016 11:33, Richard Opalka wrote:
>
>> Hi Jigsaw Team,
>>
>>
>> There's new ClassLoader::getPlatformClassLoader() method introduced
>> with project Jigsaw.
>>
>> There are three ClassLoader::getSystemResource*() methods available
>>
>> that fallback to BootLoader if SystemClassLoader is not available.
>>
>> Shouldn't ClassLoader::getPlatformResource*() methods be defined as well
>>
>> providing similar fallback mechanism?
> ClassLoader.getSystemClassLoader() should never return null. I see we
> have a few residual places that still check for null so some clean-up
> needed. The @return description also needs clean-up.
Good to know.
>
> So I'm curious if you have a scenario where there is no system class
> loader. Is this instrumentation early in the startup or something
> reading a private field, again during early startup, rather than
> calling the getSystemClassLoader method?
I don't have such scenario. I asked because I was just curious (it took
my attention). The explanation ClassLoader.getSystemClassLoader() can
not return null is satisfactory.
>
> As regards the platform class loader then
> ClassLoader.getPlatformClassLoader().getResourceXXX should be the
> equivalent of introducing new methods so it hardly seems worth it.
I see. If it's not worth it maybe deprecating
ClassLoader::getSystemResource*() methods would make sense? (Just my
0.02 $)
>
> -Alan
Richard
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