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Claude bc91b9c8d0 Add patterns module: pattern matching from JDK 21 to 27
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
2026-09-24 11:50:40 +00:00

7 lines
227 B
Java

public class BoxedToNarrower {
public static void main(String[] args) {
Integer boxed = 300;
if (boxed instanceof byte b) System.out.println("fits a byte: " + b); // Integer to byte is not allowed
}
}