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Add jep513 module: flexible constructor bodies on JDK 25 and 27

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Runnable sources, broken examples and captured transcripts for the ankurm.com JEP 513 article, including the JDK 25 vs 27 compiler wording differences.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01TF9JWFvJSNm6HVzswzZU5a
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Claude
2026-09-24 10:42:36 +00:00
parent e0cb6e83e2
commit 2ebea58d39
30 changed files with 510 additions and 0 deletions
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jep513/output/01-validate-before-super.txt
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$ javac src/ValidateBeforeSuper.java && java ValidateBeforeSuper (OpenJDK Runtime Environment Temurin-25.0.4.1+1 (build 25.0.4.1+1-LTS))
valid input:
Person constructor ran for 'Asha'
name='Asha' salary=50000
invalid input:
caught: salary must be >= 0, got -1 (note: no 'Person constructor ran' line above)
$ javac src/ValidateBeforeSuper.java && java ValidateBeforeSuper (OpenJDK Runtime Environment Temurin-27+35 (build 27+35))
valid input:
Person constructor ran for 'Asha'
name='Asha' salary=50000
invalid input:
caught: salary must be >= 0, got -1 (note: no 'Person constructor ran' line above)