RFR: 8306678: Replace use of os.version with an internal Version record

[Christian Stein]

On Fri, 21 Apr 2023 16:44:13 GMT, Roger Riggs <rriggs at openjdk.org> wrote:

> Create an internal Version record to hold and compare versions of the form (major, minor, micro).
> Add `OperatingSystem.version()` to return the version of the running OS.
> Replace uses of os.version in java.base.
> Subsequent PRs will apply to uses in other modules including, jdk.jlink, jdk.jpackage, and java.desktop.

test/jdk/jdk/internal/util/VersionTest.java line 64:

> 62:         Version actual = Version.parse(verName);
> 63:         assertEquals(actual, expected, "Parsed version mismatch");
> 64:     }

Another way to declare arguments is to use `CsvSource` like:


    @ParameterizedTest
    @CsvSource(textBlock =
            """
            1, 0, 0, 1
            1, 2, 0, 1.2
            1, 2, 0, 1.2.0
            1, 2, 3, 1.2.3
            # Ignore extra trailing characters
            1, 0, 0, 1-abc
            1, 2, 0, 1.2-abc
            1, 2, 3, 1.2.3.4
            1, 2, 3, 1.2.3-abc
            """)
    void checkParse(int major, int minor, int micro, Version actual) {
        Version expected = new Version(major, minor, micro);
        assertEquals(expected, actual, "Parsed version mismatch");
    }

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PR Review Comment: https://git.openjdk.org/jdk/pull/13584#discussion_r1174131270