RFR: 8324718: Add a static function to java.util.Objects to simplify object equality checks [v6]

[Chen Liang]

On Sat, 27 Jan 2024 07:52:56 GMT, David Alayachew <duke at openjdk.org> wrote:

>> Adding a function to Objects in order to facilitate equality checking and enhance readability. You simply specify the 2 objects that you want to check for equality, and then provide the functions which will be used to provide the values that we will check for equality.
>
> David Alayachew has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Rather than reiterating the precondition, let's explain why the method failed

I fail to see the point of this new API. Existing `ObjectMethods::bootstrap` already achieves the same functionality in a better way (though the user code looks a bit more conplex), as its produced MethodHandle can be stored in a static final field and constant-fold by the JIT, while this method's argument array can't as Java arrays are not constants, and this method is polymorphic.

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PR Comment: https://git.openjdk.org/jdk/pull/17603#issuecomment-1913188740