Java 26: New Features, Removals & Previews

Java 26 — All New Features, Removals & Previews - HTTP/3 support in HttpClient - Prepare to Make Final Mean Final - Remove the Applet API - Lazy Constants (Second Preview) - Primitive Types in Patterns, instanceof, and switch (Fourth Preview) - Structured Concurrency (Sixth Preview) - Ahead-of-Time Object Caching with Any GC - JEP 522 — G1: Improve Throughput by Reducing Synchronization - PEM Encodings of Cryptographic Objects (Second Preview) Checkout the full details : https://lnkd.in/gwiPc2Tq Subscribe and Join 5000+ Java & Spring Boot Devs: https://lnkd.in/gwiRqWBV #java #spring #springboot #java26

💡 Say Goodbye to NullPointerExceptions in Java! One of the most common issues Java developers face is the infamous NullPointerException — often called the “billion-dollar mistake.” With the evolution of Spring Boot 4 and Spring Framework 7, things are finally improving with compile-time null safety using JSpecify. By using annotations like @NullMarked and @Nullable, developers can now make nullability explicit in their code. This allows IDEs and tools to detect potential null issues much earlier. 🚀 Key advantages: • Catch potential NullPointerExceptions at compile time • Cleaner and more expressive APIs • Better IDE support and developer guidance • More stable and reliable production systems Instead of discovering null issues at runtime, we can now identify them during development itself. This is a big step toward writing safer and more maintainable Java applications. Exciting improvements ahead for the Java + Spring ecosystem! 🔥 #Java #SpringBoot #SpringFramework #BackendDevelopment #SoftwareEngineering

Comparator is an interface in Java used to define a custom way to compare and sort objects.Use it when: You want to sort objects in a custom way. The class does NOT implement Comparable. You want multiple sorting strategies for the same class. int compare(T o1, T o2) Returns: Negative → o1 comes before o2 Positive → o2 comes before o1 0 → equal order

🚀 365-Day Java Challenge – Day 290 🚀 ⸻ 🔹 Day 290: Stream API – Filtering and Summing What value is stored in the variable `sum` after executing the following statement? int sum = java.util.Arrays.asList(5, 12, 7, 20, 3).stream().filter(n -> n > 10).mapToInt(Integer::intValue).sum(); Options: A) 12 B) 32 C) 37 D) 0

🚀 365-Day Java Challenge – Day 286 🚀 ⸻ 🔹 Day 286: Stream API short‑circuiting Given the following Java code: List<Integer> list = Arrays.asList(1,2,3,4,5); long count = list.stream().filter(i -> { System.out.println(i); return i % 2 == 0; }).limit(2).count(); What will be printed to the console? Options: A) 1 2 B) 1 2 3 4 C) 2 4 D) 1 2 3 4 5

🚀 Upgrading from Java 17 to Java 21 – A Great Step Towards Modern Java Recently, I had the opportunity to work on upgrading our application from Java 17 to Java 21 (LTS). This upgrade helps improve application performance, scalability, and long-term maintainability. During the upgrade, we ensured dependency compatibility, verified build configurations, and tested the application across different environments. 🔹 One of the most exciting features in Java 21 is Virtual Threads Virtual Threads allow applications to handle thousands of concurrent tasks efficiently without the heavy resource usage of traditional threads. 💡 Example: Virtual Threads in Java 21 try (var executor = java.util.concurrent.Executors.newVirtualThreadPerTaskExecutor()) { executor.submit(() -> { System.out.println("Task running in a virtual thread"); }); } 🔹 Key advantages of upgrading to Java 21: 1. Long-Term Support (LTS) 2. Better concurrency with Virtual Threads 3.Improved pattern matching features 4. Performance and security improvements Upgrading to modern Java versions helps keep applications future-ready and more scalable. Looking forward to exploring more features of Java 21 in upcoming projects. #Java #Java21 #SoftwareDevelopment #BackendDevelopment #Programming #TechLearning

Clean DTOs with Java Records 📝 Using Java Records as DTOs in Spring Boot 3+ is one of those small things that makes the code feel much cleaner. With Bean Validation, the request model becomes: 👉 Compact – No more boilerplate getters or constructors. 👉 Immutable by design – A great fit for request models. 👉 Easy to read – Focuses on data, not ceremony. 👉 Explicit – Validation rules are right where the data is defined. It’s a simple, modern approach that improves maintainability in many Spring applications. #Java #SpringBoot #Backend #CleanCode #SoftwareEngineering

☕ 6 Permanent Features in Java 25 📝 Another Java LTS release with a bunch of new features: Scoped Values, Module Import, Flexible Constructor Bodies, and more 🔗 https://lnkd.in/d_nQhcXY

🚀 365-Day Java Challenge – Day 310 🚀 ⸻ 🔹 Day 310: Stream API – Filtering and Summing What is the output of the following code? List<Integer> list = Arrays.asList(1,2,3,4,5); int sum = list.stream().filter(n -> n%2==0).mapToInt(Integer::intValue).sum(); System.out.println(sum); Options: A) 6 B) 8 C) 10 D) 12