Add interview module: 30 design pattern interview questions with tests (Java 25, Spring 7.0.10)

Co-Authored-By: Claude Sonnet 5.5 <[email protected]> Claude-Session: https://claude.ai/code/session_017ic4b7rnC7jppGGdHGESvy
2026-10-28 18:10:09 +00:00
parent f5688a6b32
commit c51641b7db
48 changed files with 1617 additions and 1 deletions
@@ -0,0 +1,12 @@
+Q19 LazyProxy: RealStorage instances before first read=0, after two reads=1
+Q19 ProtectionProxy: read("secret-1") -> SecurityException: denied: secret-1
+Q19 Decorators stacked Logging(Caching(Real)): read("k") twice -> log=[read k, read k]
+Q20 proxy.greet("Ankur") -> hello Ankur; intercepted=[greet]
+Q20 Proxy.isProxyClass(proxy.getClass())=true; proxy instanceof Greeter.Impl=false
+Q20 newProxyInstance with a class instead of an interface -> IllegalArgumentException (... is not an interface)
+Q21 adapter: 98.6F read through CelsiusSensor -> 37.0 C
+Q21 facade: watchMovie() -> [lights dimmed, projector on, surround sound on]
+Q21 JDK adapter InputStreamReader(InputStream) first char: h
+Q22 size() of a leaf=10, of sub dir=25, of root=35
+Q23 "hello world" has 11 characters but the pool holds 8 Glyph objects
+Q23 Integer.valueOf: 127==127 -> true, 128==128 -> false