On Tue, 24 Feb 2026 07:39:10 GMT, Alan Bateman <[email protected]> wrote:

> There was effort a few years ago to push out the first use of 
> StandardCharsets as its initializer loaded all the standard charsets. So this 
> is why you will have seen usages replaced with (mostly) UTF_8.INSTANCE. This 
> was all before Project Leyden and the recent work on AOT. It would be useful 
> to do some measurements to see if this change shows any benefit.

We could certainly do measurements.  However; the use of `StandardCharsets` was 
introduced last August via #26822. Before that change `ZipCoder` used strictly 
`UTF_8.INSTANCE`. That PR did not mention `StandardCharsets` or any motivation 
for introducing it. To me, this looked like a simple oversight.

I don't have strong opinions of whether we should use `UTF_8.INSTANCE` or 
`StandardCharsets`, but would prefer if we can be consistent in this class/area 
and that any choice is deliberate and not just something slipped in sideways.

In other words, I think the burden of proof should be on #26822 for introducing 
`StandardCharsets.UTF_8.INSTANCE` in a class that otherwise uses 
`UTF_8.INSTANCE`, not for this PR reestablishing consistency and long time 
practise.

But again, opinions loosely help, I can surely withdraw this PR if that's 
consenus, even if I don't quite understand why :-)

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PR Comment: https://git.openjdk.org/jdk/pull/29443#issuecomment-3952119241

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