Add java21-features module: runnable demos and captured output for the ankurm.com java21-features article

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2026-10-20 17:13:59 +00:00
parent 5a076c826f
commit c3cc57f482
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$ javac --release 21 --enable-preview src/StructuredConcurrencyPreview.java && java --enable-preview StructuredConcurrencyPreview (21.0.12.1)
both subtasks : ankur / 42
failure shuts down siblings: java.lang.IllegalStateException: boom