A practical walkthrough of the headline features landing in Java 21 (LTS) through Java 25 (LTS): records, pattern matching, virtual threads, sequenced collections, scoped values, and structured concurrency — with runnable examples and AI prompts you can copy straight into Claude or ChatGPT to migrate your own code.
A hands-on comparison of Java virtual threads (Project Loom) against platform threads — with a 28× I/O benchmark, CPU-bound proof, memory comparison table, HttpClient real-world example, architecture diagram, and a decision table for when NOT to use virtual threads.
A practical guide to the modern Java test stack — JUnit 6 as the runner, AssertJ for fluent assertions, Mockito 5 for mocking, and Testcontainers for real infrastructure. Includes runnable examples for each and AI prompts to generate and refactor tests.
A copy-paste playbook of AI prompts for migrating Java codebases between every LTS jump: 8→11, 11→17, 17→21, and 21→25. Use them in Claude, ChatGPT, Gemini, or Cursor to automate the repetitive parts of a version upgrade.
A hands-on guide to upgrading a Java 21 codebase to Java 25 LTS — build file changes, dependency bumps, breaking changes, a prioritized checklist, and six AI prompts that automate the tedious parts.
A practical cookbook for the Java Stream API and Collectors utility — filter/map/reduce essentials, groupingBy and partitioningBy patterns, performance gotchas, and AI prompts to refactor legacy loops into clean pipelines.
A practical walkthrough of Java's three classic concurrency tools — ExecutorService, CompletableFuture, and ForkJoinPool — with runnable examples, guidance on when to use each, and AI prompts for refactoring legacy concurrent code.
Five ways to add two integers in Java: hardcoded, Scanner input, command-line args, reusable method, and Streams. Covers integer overflow, Math.addExact(), int vs long, and JUnit tests.
Learn how to configure Java RMI and Hessian remoting in Spring Boot 2 with RmiServiceExporter, HessianServiceExporter, and their proxy factory beans. Includes server and client configuration, shared interface setup, and a comparison table.
Learn how to add JSONP support to Jersey JAX-RS REST APIs using the @JSONP annotation and a manual callback wrapper. Includes curl testing, browser script-tag usage, XSS security validation, and a JSONP vs CORS comparison.