Claude
ff6130bede
Payment model, permits and the three modifiers, default-branch trap, generic and recursive hierarchies, visitor comparison, run-time enforcement, modules. Transcripts from JDK 21, 25 and 27. Co-Authored-By: Claude Sonnet 5 <[email protected]> Claude-Session: https://claude.ai/code/session_01TF9JWFvJSNm6HVzswzZU5a
8 lines
272 B
Java
8 lines
272 B
Java
public class AnonymousSealed {
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sealed interface Payment permits Card {}
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record Card(long amount) implements Payment {}
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static Payment sneaky() {
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return new Payment() {}; // an anonymous class is a subtype nobody listed
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}
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}
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