Software Design Patterns in OOP with Java examples. Architecture principles and clean code design in OOP applications

Learn amazing features in Java with functional programming, lambda functions, method references and Stream API

Learn Java Collections Framework from scratch to PRO level with practical exercises

Master Extreme Programming techniques to write cleaner, faster, and more reliable code in Agile teams

Learn Selenium from scratch and build Test Automation framework with minimum set of tools: C#, NuGet, NUnit, Selenium

Learn Azure API Management end‑to‑end with gateways, policies, JWT validation, and Azure DevOps integration.

Preparation for Oracle Certification (Java Certification) Java SE 21 1Z0-830 with examples, quizes and home tasks

The Complete Guide to XP. Master XP techniques to write cleaner, faster, and more reliable code. From Theory to Practice

Learn Client-Server Architecture, TCP/IP, HTTP, Web Servers, Tomcat, HTML/CSS, Servlets, Web Filters, JSP, JSTL, Maven

Use real-world resilience patterns to build robust, scalable, and failure-resistant backend systems