Master OOPS ABAP

Master Object-Oriented ABAP — From Your First Class to Your Next Job Offer

If you've ever Googled "ABAP OOP interview questions" at midnight before a big interview, or stared at a BAdI implementation wondering how all the pieces fit together, this book was written for exactly that moment.

Mastering Object-Oriented ABAP is a 74-page, all-in-one reference that takes you from your very first CLASS...ENDCLASS to designing production-grade architecture — and then hands you 100+ interview questions to prove you actually know it.

What makes this different from scattered blog posts and outdated forum threads:

Most ABAP OOP resources either stay stuck in "here's the syntax" mode or jump straight to advanced patterns with no bridge to get you there. This book is structured the way a real skill actually builds:

📘 Part I–III — Foundations to Advanced (18 chapters)

Classes, objects, constructors, inheritance, polymorphism, interfaces, class-based exceptions, and events — then straight into design patterns (Singleton, Factory, Strategy, Observer, Decorator), RTTI/RTTS, OOP-based ALV programming, BAdIs, Shared Objects, and even how it all connects to RAP. Every concept ships with real, runnable ABAP code — not pseudocode — plus common pitfalls, best practices, and a hands-on exercise with a worked solution.

🏗️ Part IV — Real Project Case Studies (5 full designs)

This is the section most books skip. Five complete, whiteboard-style designs pulled straight from real implementation scenarios: building a reusable ALV framework, designing an exception hierarchy for an inbound interface, combining a BAdI with the Strategy pattern for tiered pricing, a Singleton-based config cache, and a Factory-driven multi-country tax engine. You don't just learn the pattern — you see exactly when and why to reach for it.

🎯 Part V — Interview Preparation (100+ questions)

Organized the way real panels actually escalate: Basic → Intermediate → Advanced → Scenario-based → Rapid-fire. Every answer explains the why, not just the definition — because that's what actually separates candidates in a room.

🎁 7 Bonus Appendices

A syntax cheat sheet, a full glossary, a common-errors troubleshooting table, a 30-day study plan, an extended design pattern guide, a complete mock interview transcript you can rehearse against, and an A–Z keyword index for instant lookup.

Who this is for:

• Developers transitioning from procedural to object-oriented ABAP
• Consultants prepping for their next interview or client project
• Anyone who wants one reference to stop context-switching between ten different tabs

The bottom line: you're not just buying explanations — you're buying the exact case studies and interview answers that get people hired, in one place, ready to open the night before it matters.