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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/08-release-levels.txt
+19
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@@ -0,0 +1,19 @@
$ javac --release 21 broken/OnJdk21.java (25.0.4.1+1)
OnJdk21.java:7: error: flexible constructors is not supported in -source 21
super(name.strip());
^
(use -source 25 or higher to enable flexible constructors)
1 error
exit=1
$ javac --release 24 broken/OnJdk21.java (25.0.4.1+1)
OnJdk21.java:7: error: flexible constructors is not supported in -source 24
super(name.strip());
^
(use -source 25 or higher to enable flexible constructors)
1 error
exit=1
$ javac --release 25 broken/OnJdk21.java (25.0.4.1+1)
exit=0