Integrated: 8374355: Update copyright year to 2025 for demo in files where it was missed

[Sergey Bylokhov]

On Thu, 25 Dec 2025 08:10:07 GMT, Sergey Bylokhov <serb at openjdk.org> wrote:

> The copyright year in demo files updated in 2025 has been bumped to 2025.
> 
> The next command can be run (on top of this PR) to verify that each file had prior commits in 2025:
> 
> `git diff HEAD~1 --name-only | while read f; do git log HEAD~1 --since="2025-01-01" --oneline -- "$f" | head -1 | grep -q . || echo "NOT IN 2025: $f"; done`

This pull request has now been integrated.

Changeset: 2447e071
Author:    Sergey Bylokhov <serb at openjdk.org>
URL:       https://git.openjdk.org/jdk/commit/2447e07137b809aec9bdbb97f89b52488f5c02de
Stats:     9 lines in 9 files changed: 0 ins; 0 del; 9 mod

8374355: Update copyright year to 2025 for demo in files where it was missed

Reviewed-by: aivanov

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PR: https://git.openjdk.org/jdk/pull/28991