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Premium Course Syllabus

Object-Oriented Programming

Condensed Placement Preparation Syllabus

OOP Principles · Design Patterns · SOLID · Interview Ready

5 Modules
25 Topics
5 Quizzes
Core CS

Ideal For

Campus placements requiring OOP concept questions
Java / Python / C++ technical interview rounds
Design-focused interviews at product-based companies
Students preparing for OOPS MCQs in online tests

Module-Wise Curriculum

A concise, placement-focused syllabus — covers every key concept without overloading.

1

Module 1

Introduction To Oop & Classes

  • What is OOP — procedural vs object-oriented, why OOP matters in software
  • Classes & Objects — class as blueprint, object as instance, memory allocation
  • Constructors — default, parameterised, copy constructor, constructor chaining
  • Destructors & Garbage Collection — when and how objects are destroyed
  • Access Modifiers — public, private, protected — visibility rules across classes
Quiz — OOP Intro & Classes
2

Module 2

Core Oop Principles

  • Encapsulation — data hiding, getters/setters, benefits in real-world design
  • Abstraction — abstract classes vs interfaces, hiding implementation details
  • Inheritance — single, multiple, multilevel, hierarchical, hybrid — with examples
  • Polymorphism — compile-time (overloading) vs run-time (overriding), dynamic dispatch
  • Method Overloading vs Overriding — rules, return types, static vs dynamic binding
Quiz — Core Principles
3

Module 3

Advanced Oop Features

  • Interfaces vs Abstract Classes — when to use which, default methods, multiple inheritance
  • Static Members — static variables, methods, blocks, use cases and pitfalls
  • Final Keyword — final variable, final method, final class — what each prevents
  • Exception Handling — try-catch-finally, checked vs unchecked, custom exceptions
  • Generics — type parameters, bounded wildcards, type erasure
Quiz — Advanced OOP
4

Module 4

Design Patterns

  • What are Design Patterns — Creational, Structural, Behavioural categories
  • Singleton Pattern — lazy vs eager initialisation, thread-safe singleton
  • Factory Pattern — simple factory, factory method, abstract factory
  • Observer Pattern — publisher-subscriber, real-world use (event systems, UI)
  • Strategy & Decorator Pattern — behaviour encapsulation and object wrapping
Quiz — Design Patterns
5

Module 5

Solid Principles & Interview Prep

  • SOLID Principles — Single Responsibility, Open/Closed, Liskov, Interface Segregation, DI
  • OOPS in Real-World Systems — how Uber, Amazon model their domain classes
  • Object-Oriented Analysis & Design (OOAD) — class diagrams, use case diagrams
  • Top 20 OOP Interview Questions — structured answers with Java/Python examples
  • Tricky MCQ Patterns — output questions, overriding rules, access modifier traps
Quiz — SOLID & Interview

Pattern-First

Learn recurring patterns, not one-off tricks — the fastest path to solving new problems.

Placement-Ready

Every module ends with an assessment or drill mapped to the way rounds are actually run.

AI-Assisted

Unlimited AI Tutor, Mock Interviews and Resume Review are included with your subscription.

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OOP Concepts Notes & Interview Questions

Object-oriented programming taught as design thinking rather than four keywords: encapsulation, abstraction, inheritance and polymorphism with code you can defend, then the details interviews probe — method overloading versus overriding, abstract classes versus interfaces, constructors and destructors, static members, virtual functions and dynamic dispatch.

It continues into SOLID principles, composition over inheritance, the diamond problem, shallow versus deep copy, and small design questions where you must model real entities. Examples are shown across C++ and Java conventions, since interviewers ask in whichever language you list on your resume.

What you'll learn in Object-Oriented Programming

  • Introduction To Oop & Classes
  • Core Oop Principles
  • Advanced Oop Features
  • Design Patterns
  • Solid Principles & Interview Prep

Why Object-Oriented Programming matters for placements

OOP is the subject most likely to be asked in every single interview you attend, from a service-company technical round to a product-company machine-coding round. It is also the foundation for LLD, so studying it well pays twice.

Free vs Premium — what's included

Free

  • This full module-wise syllabus and topic list
  • The free revision course for this subject
  • Free core CS question bank and roadmaps
  • Aptitude and DSA practice sheets

Premium

  • Full lesson content for every module listed above
  • Module quizzes and interview question sets
  • Worked examples, numericals and revision drills
  • All 14 premium placement courses, lifetime access

Frequently asked questions

What is the difference between an abstract class and an interface?

An abstract class can hold state and partial implementation and models an 'is-a' relationship; an interface declares a contract of capability and allows multiple implementation. Choose an interface when unrelated types share behaviour.

What is the difference between overloading and overriding?

Overloading is compile-time — same method name with different parameter lists in the same class. Overriding is runtime — a subclass replaces the implementation of an inherited method with the same signature.

How do I prepare OOP for machine-coding rounds?

Finish the four pillars and SOLID here, then move to LLD and practise modelling one system a day — parking lot, library, splitwise — writing classes with responsibilities rather than one large file.

Also revise

Low-Level Design (LLD)Free OOP EssentialsDSA Course