🔗 Manage inter-module dependencies gracefully—build tools + Spring Boot = powerful modular design. #JavaTips #Gradle

"Java's `finalize()` method is not guaranteed to be called, making it unreliable for resource cleanup. Instead, use `try-with-resources` statements or override `close()` methods to ensure proper resource release." #JavaTips #BestPractices

⚡ Resource is legacy, EntityModel is current, and RepresentationModel is the base—know when to use each. #SpringHATEOAS #JavaTips

✅ Constructor injection: ... private final Logger logger; @autowired public UserController(Logger logger) { this.logger = logger; } ... ✅ Easier to instantiate for unit tests #JavaTips

💡Java Tip : Prefer constructor injection over field injection. ❌ Field injection: @component public class UserController { @autowired private Logger logger; public void createUser(String username) { ... } } 🔴 Harder to test in insolation. #JavaTips

💡 Java tip: Refactor legacy code gradually. Use tests to ensure stability. #JavaTips #LegacyCode

Classic switch in Java allows fall-through when break is missing. Enhanced switch (Java 14+) fixes this with concise, safer syntax using arrows and direct value returns. Modern switch makes Java code cleaner and easier to maintain. #Java #Programming #JavaTips #CleanCode

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❌ Manually: Iterator<String> it = names.iterator(); while (it.hasNext()) { if (it.next() == null) { it.remove(); } } ✅ With removeIf: names.removeIf(Objects::isNull); #Java #JavaTips

💡 Java tip: Starting from Java 8, you can remove nulls easily with list.removeIf(Objects::isNull). List<String> names = new ArrayList<>(Arrays.asList("A", null, "B", null, "C")); #Java #JavaTips 🧵

✅Duration represents the time-based amount between two Instants in seconds, milliseconds, nanoseconds. Instant start = Instant.now(); ... Instant end = Instant.now(); Duration elapsed = Duration.between(start, end); #Java #JavaTips

💡 Java tip: Use Duration and Instant for precise time calculations. ✅Instant represents a point in time in UTC, with nanosecond precision. Can be obtained by Instant.now(). #Java #JavaTips 🧵

✅ Operating directly on ints: int sumPrimitive = IntStream.of(1, 2, 3, 4, 5).sum(); ✅ Other primitive stream classes are: LongStream, DoubleStream #Java #JavaTips

💡 Java tip: Avoid boxing overhead by using primitive streams. ❌ Creating Integer objects for each value: Stream<Integer> boxed = Stream.of(1, 2, 3, 4, 5); int sumBoxed = boxed.reduce(0, Integer::sum); #Java #JavaTips 🧵

💡Java tip: Use ThreadLocal.withInitial(...) to provide each thread its own safe default value. ✅ ThreadLocal<Integer> counter = ThreadLocal.withInitial(() -> 0); counter.get(); // 0 counter.set(70); counter.get(); // 70 ✅ The value is created lazily #Java #JavaTips

⏱️ Timestamp every critical action. Build trustworthy apps with full audit trails. #JavaTips

✅ With a single line: numbers.removeIf(n -> n % 2 == 0); #JavaTips

When using Java's `StringBuilder` class, remember that concatenating strings with the `+` operator can create unnecessary temporary objects, whereas using the `StringBuilder.append()` method avoids this issue. #JavaTips

🔒 Security + Compliance = Audit Logs. See how Java apps can track activity seamlessly. #JavaTips

💡 Java tip: Starting from Java 11, if you need to repeat n times a specific string, you can use the String method repeat(n). ✅ Example: String result = "$".repeat(10); System.out.println(result); // $$$$$$$$$$ #Java #JavaTips

📦 Simple Maven/Gradle dependency, no setup pain. Start with OSHI today. #JavaTips