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 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 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.
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 step-by-step Java 21 to 25 upgrade guide: Maven and Gradle files, Lombok and Mockito versions, removed and warned APIs, a 12-item checklist and seven AI prompts. Every claim was run on JDK 21, 25, 26 and 27, and the old guide's mistakes are corrected.
Adding two integers looks trivial until the sum overflows silently. This guide covers five quick ways to add, then goes deep: the wraparound reproduced with real numbers, Math.addExact and the exact-arithmetic family, widening to long, BigInteger, and the bit trick addExact itself uses.
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.
A complete 8086 assembly program implementing the Sieve of Eratosthenes to find all prime numbers up to 50. Includes annotated source code, algorithm walkthrough, how-the-code-works breakdown, sample output, and a common-mistakes table.
A fully working 8086 assembly language calculator that performs addition, subtraction, multiplication, and division on 16-bit numbers. Includes annotated source code, algorithm walkthrough, sample output, and a common-mistakes table.