RFR: 8361325: Refactor ClassLoaderExt

[Coleen Phillimore]

On Thu, 3 Jul 2025 05:16:54 GMT, Calvin Cheung <ccheung at openjdk.org> wrote:

> After the refactoring work done via [JDK-8280682](https://bugs.openjdk.org/browse/JDK-8280682), there are only three functions remaining in the ClassLoaderExt class. This RFE is to move those remaining functions into other classes so that the ClassLoaderExt class can be eliminated.
> 
> Testing: passed tiers 1 - 5.

This looks great. I never liked the Ext name.  I had a tiny comment.

src/hotspot/share/classfile/modules.cpp line 671:

> 669:   // list[3] = ""
> 670:   // list[4] = ""
> 671:   list.sort(Modules::compare_module_names);

Does compare _module_names have to be an external function?

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Marked as reviewed by coleenp (Reviewer).

PR Review: https://git.openjdk.org/jdk/pull/26110#pullrequestreview-2983066152
PR Review Comment: https://git.openjdk.org/jdk/pull/26110#discussion_r2182718450