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
17 lines
599 B
Java
17 lines
599 B
Java
public class WalletNotHandled {
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sealed interface Payment permits Card, Upi, NetBanking, Wallet {} // Wallet added
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record Card(long amount) implements Payment {}
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record Upi(long amount) implements Payment {}
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record NetBanking(long amount) implements Payment {}
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record Wallet(long amount) implements Payment {}
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// Same switch as before, with no default and no case for Wallet.
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static long fee(Payment p) {
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return switch (p) {
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case Card c -> c.amount() * 2 / 100;
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case Upi u -> 0;
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case NetBanking n -> 10;
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};
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}
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}
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