#JavaEvolved

☕ Scoped values Share data across call stacks safely without ThreadLocal pitfalls. ThreadLocal → ScopedValue (JDK 25+) 🔗 #Java #JavaEvolved

Want to see how Java evolved, feature by feature? ☕️ @brunoborges built an amazing site that shows Java language changes side by side—perfect for students and devs modernizing legacy apps. Check it out: 🔗 #Java #SoftwareEngineering #JavaEvolved

☕ String.lines() for line splitting Use String.lines() to split text into a stream of lines without regex overhead. split("\\n") → lines() (JDK 11+) 🔗 #Java #JavaEvolved

☕ Spring Framework 7 API Versioning Replace duplicated version-prefixed controllers with Spring Framework 7's native API ver… Manual URL Path Versioning → Native API Versioning (JDK 17+) 🔗 #Java #JavaEvolved

☕ Optional.ifPresentOrElse() Handle both present and empty cases of Optional in one call. if/else on Optional → ifPresentOrElse() (JDK 9+) 🔗 #Java #JavaEvolved

☕ Module import declarations Import all exported packages of a module with a single declaration. Many Imports → import module (JDK 25+) 🔗 #Java #JavaEvolved

☕ Record patterns (destructuring) Destructure records directly in patterns — extract fields in one step. Manual Access → Destructuring (JDK 21+) 🔗 #Java #JavaEvolved

☕ TLS 1.3 by default TLS 1.3 is enabled by default — no explicit protocol configuration needed. Manual TLS Config → TLS 1.3 Default (JDK 11+) 🔗 #Java #JavaEvolved

☕ Markdown in Javadoc comments Write Javadoc comments in Markdown instead of HTML for better readability. HTML-based Javadoc → Markdown Javadoc (JDK 23+) 🔗 #Java #JavaEvolved

☕ Manual JPA Transaction vs Declarative @Transactional Replace verbose begin/commit/rollback blocks with a single @Transactiona… Manual Transaction → @Transactional (JDK 11+) 🔗 #Java #JavaEvolved

☕ HexFormat Convert between hex strings and byte arrays with HexFormat. Manual Hex Conversion → HexFormat (JDK 17+) 🔗 #Java #JavaEvolved

☕ Instant with nanosecond precision Get timestamps with microsecond or nanosecond precision. Milliseconds → Nanoseconds (JDK 9+) 🔗 #Java #JavaEvolved

☕ ExecutorService auto-close Use try-with-resources for automatic executor shutdown. Manual Shutdown → try-with-resources (JDK 19+) 🔗 #Java #JavaEvolved

☕ Map.entry() factory Create map entries with a clean factory method. SimpleEntry → Map.entry() (JDK 9+) 🔗 #Java #JavaEvolved

☕ Helpful NullPointerExceptions JVM automatically tells you exactly which variable was null. Cryptic NPE → Detailed NPE (JDK 14+) 🔗 #Java #JavaEvolved

☕ Modern HTTP client Use the built-in HttpClient for clean, modern HTTP requests. HttpURLConnection → HttpClient (JDK 11+) 🔗 #Java #JavaEvolved

☕ Announcing @javaevolved. Every week, one modern Java pattern... old vs. modern code, side by side. 113 patterns. ~2 years of content. Fully automated with GitHub Actions + JBang. Follow @javaevolved for weekly evolution! #Java #JavaEvolved

☕ Guarded patterns with when Add conditions to pattern cases using when guards. Nested if → when Clause (JDK 21+) 🔗 #Java #JavaEvolved

☕ Stream.mapMulti() Emit zero or more elements per input without creating intermediate streams. flatMap + List → mapMulti() (JDK 16+) 🔗 #Java #JavaEvolved

☕ JNDI Lookup vs CDI Injection Replace fragile JNDI string lookups with type-safe CDI injection for container-managed resources. JNDI Lookup → CDI @Inject (JDK 11+) 🔗 #Java #JavaEvolved

☕ Unmodifiable collectors Collect directly to an unmodifiable list with stream.toList(). collectingAndThen → stream.toList() (JDK 16+) 🔗 #Java #JavaEvolved