RFR: JDK-8374395 : Improve MemoryUsage.toString() and constructor error messages for better clarity

[Alan Bateman]

On Tue, 30 Dec 2025 22:37:43 GMT, Eunbin Son <duke at openjdk.org> wrote:

> This addresses the first of three issues in JDK-8374395.

Note that you can't use the same JBS issue for different PRs/commits. If there are other changes proposed then they will need their own JBS issues.

test/jdk/java/lang/management/MemoryUsage would be a better place for unit tests for this API.

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PR Comment: https://git.openjdk.org/jdk/pull/29009#issuecomment-3701660168