Java 27 and 26: runnable demos and captured output for every JEP, plus version lanes

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01B38FGKKam5SCGgwgduVAh3
This commit is contained in:
2026-09-21 15:08:50 +00:00
committed by Claude
co-authored by Claude Sonnet 5
commit f59c1de96d
152 changed files with 5049 additions and 0 deletions
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Refactor this Java code to use Java 21 pattern matching for switch. Introduce a sealed interface if the types form a closed hierarchy. Ensure the switch is exhaustive and remove all redundant casts and intermediate variables.