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sealed: add release-level and Jackson 3.2.3 transcripts

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09 shows which language level each sealed feature needs; 10 runs the Payment model through Jackson 3 (jars fetched and sha1-checked, not committed).

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01TF9JWFvJSNm6HVzswzZU5a
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Claude
2026-09-24 12:08:23 +00:00
parent ff6130bede
commit d2c1efc2c4
9 changed files with 193 additions and 0 deletions
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sealed/output/09-release-levels.txt
+17
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@@ -0,0 +1,17 @@
$ javac --release 16 src/ImplicitPermits.java (25.0.4.1+1-LTS)
src/ImplicitPermits.java:4: error: sealed classes are not supported in -source 16
public sealed class ImplicitPermits {
^
(use -source 17 or higher to enable sealed classes)
1 error
exit=1
$ javac --release 17 src/ImplicitPermits.java (25.0.4.1+1-LTS)
exit=0
$ javac --release 17 src/PaymentDemo.java (25.0.4.1+1-LTS)
src/PaymentDemo.java:11: error: patterns in switch statements are not supported in -source 17
case Card(String last4, long amount) -> amount * 2 / 100; // 2 percent
^
(use -source 21 or higher to enable patterns in switch statements)
src/PaymentDemo.java:11: error: deconstruction patterns are not supported in -source 17