Java. Evolved.

☕ Type inference with var Use var for local variable type inference — less noise, same safety. Explicit Types → var keyword (JDK 10+) 🔗 javaevolved.github.io/language/type-… #Java #JavaEvolved

☕ JDBC ResultSet Mapping vs JPA Criteria API Replace manual JDBC ResultSet mapping with JPA's type-safe Criteria API for dynamic que… JDBC ResultSet → JPA Criteria API (JDK 11+) 🔗 javaevolved.github.io/enterprise/jdb… #Java #JavaEvolved

☕ Stable values Thread-safe lazy initialization without volatile or synchronized. Double-Checked Locking → StableValue (JDK 25+) 🔗 javaevolved.github.io/concurrency/st… #Java #JavaEvolved

☕ JFR for profiling Profile any Java app with the built-in Flight Recorder — no external tools. External Profiler → Java Flight Recorder (JDK 9+) 🔗 javaevolved.github.io/tooling/jfr-pr… #Java #JavaEvolved

☕ JPA versus Jakarta Data Declare a repository interface and let Jakarta Data generate the DAO implementation automatically. JPA EntityManager → Jakarta Data Repository (JDK 21+) 🔗 javaevolved.github.io/enterprise/jpa… #Java #JavaEvolved

☕ Reverse list iteration Iterate over a list in reverse order with a clean for-each loop. Manual ListIterator → reversed() (JDK 21+) 🔗 javaevolved.github.io/collections/re… #Java #JavaEvolved

☕ JDBC versus jOOQ Replace raw JDBC string-based SQL with jOOQ's type-safe, fluent SQL DSL. Raw JDBC → jOOQ SQL DSL (JDK 11+) 🔗 javaevolved.github.io/enterprise/jdb… #Java #JavaEvolved

☕ Servlet versus JAX-RS Replace verbose HttpServlet boilerplate with declarative JAX-RS resource classes. HttpServlet → JAX-RS Resource (JDK 11+) 🔗 javaevolved.github.io/enterprise/ser… #Java #JavaEvolved

☕ String.isBlank() Check for blank strings with a single method call. trim().isEmpty() → isBlank() (JDK 11+) 🔗 javaevolved.github.io/strings/string… #Java #JavaEvolved

☕ Sealed classes for type hierarchies Restrict which classes can extend a type — enabling exhaustive switches. Open Hierarchy → sealed permits (JDK 17+) 🔗 javaevolved.github.io/language/seale… #Java #JavaEvolved

☕ HexFormat Convert between hex strings and byte arrays with HexFormat. Manual Hex Conversion → HexFormat (JDK 17+) 🔗 javaevolved.github.io/datetime/hex-f… #Java #JavaEvolved

☕ Multi-file source launcher Launch multi-file programs without an explicit compile step. Compile All First → Source Launcher (JDK 22+) 🔗 javaevolved.github.io/tooling/multi-… #Java #JavaEvolved

☕ String.strip() vs trim() Use Unicode-aware stripping with strip(), stripLeading(), stripTrailing(). trim() → strip() (JDK 11+) 🔗 javaevolved.github.io/strings/string… #Java #JavaEvolved

☕ Module import declarations Import all exported packages of a module with a single declaration. Many Imports → import module (JDK 25+) 🔗 javaevolved.github.io/language/modul… #Java #JavaEvolved

☕ Static methods in interfaces Add static utility methods directly to interfaces instead of separate utility classes. Utility classes → Interface static methods (JDK 8+) 🔗 javaevolved.github.io/language/stati… #Java #JavaEvolved

☕ Pattern matching for instanceof Combine type check and cast in one step with pattern matching. instanceof + Cast → Pattern Variable (JDK 16+) 🔗 javaevolved.github.io/language/patte… #Java #JavaEvolved

☕ Writing files Write a String to a file with one line. FileWriter + BufferedWriter → Files.writeString() (JDK 11+) 🔗 javaevolved.github.io/io/writing-fil… #Java #JavaEvolved

☕ Strong random generation Get the platform's strongest SecureRandom implementation. new SecureRandom() → getInstanceStrong() (JDK 9+) 🔗 javaevolved.github.io/security/stron… #Java #JavaEvolved

☕ Unnamed variables with _ Use _ to signal intent when a variable is intentionally unused. Unused Variable → _ Placeholder (JDK 22+) 🔗 javaevolved.github.io/language/unnam… #Java #JavaEvolved

☕ String.repeat() Repeat a string n times without a loop. StringBuilder Loop → repeat() (JDK 11+) 🔗 javaevolved.github.io/strings/string… #Java #JavaEvolved