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 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.
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.
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.
Fix org.hibernate.query.sqm.internal.SqmUtil$NotYetImplementedException in Spring Boot JPA native queries. Covers interface projections, @SqlResultSetMapping, and JPQL constructor expressions with annotated code examples.
Master Angular services and dependency injection: creating services with @Injectable, providedIn scope options, inject() function, InjectionToken, component-level providers, and unit testing with mock services.