equals-hashcode: equals/hashCode contract demos, missing hashCode and constant-hash costs, mutable keys, records, JPA entity id trap, 13 contract tests

Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b66uwsWr9B1ouyrzUh
2026-11-12 20:08:35 +05:30
parent 319697c345
commit 682b7b067c
22 changed files with 692 additions and 0 deletions
@@ -0,0 +1,3 @@
+date.equals(ts) = true
+ts.equals(date) = false
+date.getTime() == ts.getTime() = true