asmhatre/jackson3-by-example
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Jackson 3 series companion code

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37 runnable examples covering the eight feature posts on ankurm.com, verified
against Jackson 3.2.1 on Temurin 21.0.5. Every output committed under docs/ was
produced by run-all.sh.

Also documents 11 places where the published snippets do not compile or do not
behave as printed against a real Jackson 3 build - most notably that
writeValueAsString(List<Base>) silently drops the polymorphic type discriminator,
so the post's serialised output cannot be read back.
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Ankur
2026-08-04 23:12:11 +05:30
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docs/output/D01RenameAndIgnore.txt Normal file
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rename : {"order_id":1001,"customer_name":"Alice"}
read back : OrderSummary[orderId=1001, customerName=Alice]
ignore : {"username":"alice"}
read back : passwordHash=null