Claude
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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
45 lines
1.4 KiB
Plaintext
45 lines
1.4 KiB
Plaintext
$ javac src/Reflect.java && java Reflect (21.0.10+7-Ubuntu-124.04)
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Shape: sealed, permits [Circle, Poly, Custom]
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Circle: final
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Poly: sealed, permits [Tri, Quad]
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Tri: final
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Quad: final
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Custom: open (non-sealed or plain)
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Hexagon: open (non-sealed or plain)
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circle triangle quad custom:Hexagon
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$ javac src/Reflect.java && java Reflect (25.0.4.1+1-LTS)
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Shape: sealed, permits [Circle, Poly, Custom]
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Circle: final
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Poly: sealed, permits [Tri, Quad]
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Tri: final
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Quad: final
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Custom: open (non-sealed or plain)
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Hexagon: open (non-sealed or plain)
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circle triangle quad custom:Hexagon
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$ javac src/Reflect.java && java Reflect (27+35)
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Shape: sealed, permits [Circle, Poly, Custom]
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Circle: final
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Poly: sealed, permits [Tri, Quad]
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Tri: final
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Quad: final
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Custom: open (non-sealed or plain)
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Hexagon: open (non-sealed or plain)
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circle triangle quad custom:Hexagon
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$ javac src/ImplicitPermits.java && java ImplicitPermits (21.0.10+7-Ubuntu-124.04)
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[ImplicitPermits$A, ImplicitPermits$B]
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$ javac src/ImplicitPermits.java && java ImplicitPermits (25.0.4.1+1-LTS)
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[ImplicitPermits$A, ImplicitPermits$B]
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$ javac src/ImplicitPermits.java && java ImplicitPermits (27+35)
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[ImplicitPermits$A, ImplicitPermits$B]
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$ javap -v -cp . 'PaymentDemo$Payment' | grep -A3 PermittedSubclasses (25.0.4.1+1-LTS)
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PermittedSubclasses:
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PaymentDemo$Card
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PaymentDemo$Upi
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PaymentDemo$NetBanking
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