RFR: 8301492: Modernize equals() method of ResourceBundle.CacheKey and Bundles.CacheKey [v3]

[Pavel Rappo]

On Wed, 1 Feb 2023 10:36:12 GMT, Sergey Tsypanov <stsypanov at openjdk.org> wrote:

>> `ResourceBundle.CacheKey.equals()` and `Bundles.CacheKey.equals()` are quire outdated. This simple clean-up modernizes them.
>
> Sergey Tsypanov has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Restore logic

Coincidentally, I'm looking at modernizing some of the equals methods in java.base.

src/java.base/share/classes/java/util/ResourceBundle.java line 743:

> 741:                 return ((module != null) && (module.equals(otherEntry.getModule())) &&
> 742:                         (caller != null) && (caller.equals(otherEntry.getCallerModule())));
> 743:             } catch (NullPointerException | ClassCastException e) {

Are we sure that NPE can only be thrown when calling equals on `name` or `locale` and not, for example, from `getModule()` or `getCallerModule()`?

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PR Review: https://git.openjdk.org/jdk/pull/12328#pullrequestreview-1494905419
PR Review Comment: https://git.openjdk.org/jdk/pull/12328#discussion_r1239665426