Please review this PR, which updates the exception message for java.text.DateFormatSymbols.setZoneStrings
`setZoneStrings()` takes a multi dimensional array as input. If any row does not have a length of at least 5, an _IllegalArgumentException_ is thrown. The exception should indicate why it was thrown. ------------- Commit messages: - init Changes: https://git.openjdk.org/jdk/pull/15849/files Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=15849&range=00 Issue: https://bugs.openjdk.org/browse/JDK-8316629 Stats: 2 lines in 1 file changed: 1 ins; 0 del; 1 mod Patch: https://git.openjdk.org/jdk/pull/15849.diff Fetch: git fetch https://git.openjdk.org/jdk.git pull/15849/head:pull/15849 PR: https://git.openjdk.org/jdk/pull/15849
