RFR: 8360045: StringTokenizer.hasMoreTokens() throws NPE after nextToken(null)

[ExE Boss]

On Mon, 23 Jun 2025 20:14:36 GMT, Naoto Sato <naoto at openjdk.org> wrote:

> Fixing the side-effect caused by calling `StringTokenizer.nextToken(null)`, where the delimiter is set to `null` even if the method throws an NPE.

Note that as mentioned in the bug discussion, the same also occurs when doing `new StringTokenizer("some string", (String) null)`.

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PR Comment: https://git.openjdk.org/jdk/pull/25942#issuecomment-2997985004