asmhatre/javademos
1
0
Fork 0
Code Actions Activity

Add patterns module: pattern matching from JDK 21 to 27

Browse Source 
Type, record and primitive patterns, guards, sealed exhaustiveness, MatchException via separate compilation, and eight captured transcripts.

Co-Authored-By: Claude Sonnet 5 <[email protected]>
Claude-Session: https://claude.ai/code/session_01TF9JWFvJSNm6HVzswzZU5a
This commit is contained in:
Claude
2026-09-24 11:50:40 +00:00
parent 96b25c8fc4
commit bc91b9c8d0
36 changed files with 736 additions and 0 deletions
Download Patch File Download Diff File Expand all files Collapse all files
patterns/output/08-preview-class-files.txt
+11
View File
@@ -0,0 +1,11 @@
$ javap -v PrimitiveSwitch | grep -E 'minor|major' (compiled by 25.0.4.1+1-LTS with --enable-preview)
minor version: 65535
major version: 69
$ java --enable-preview PrimitiveSwitch (class compiled on 25, run on 27+35)
Error: LinkageError occurred while loading main class PrimitiveSwitch
java.lang.UnsupportedClassVersionError: PrimitiveSwitch (class file version 69.65535) was compiled with preview features that are unsupported. This version of the Java Runtime only recognizes preview features for class file version 71.65535
$ java PrimitiveSwitch (same class, no flag, run on 25.0.4.1+1-LTS)
Error: LinkageError occurred while loading main class PrimitiveSwitch
java.lang.UnsupportedClassVersionError: Preview features are not enabled for PrimitiveSwitch (class file version 69.65535). Try running with '--enable-preview'