RFR: 8373660: Add explicit null check in DataOutputStream.writeBytes

[Alan Bateman]

On Wed, 17 Dec 2025 12:56:14 GMT, eunbin son <duke at openjdk.org> wrote:

> Add explicit null check using Objects.requireNonNull in DataOutputStream.writeBytes(String s) to provide a clearer error message and make the API contract explicit.

Can you paste in the existing NPE message vs. the new NPE message? With Helpful NPEs (JEP 358), there is a less need to make changes like this.

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PR Comment: https://git.openjdk.org/jdk/pull/28869#issuecomment-3665396706