☕
Backend

Java — OOP &
Backend Development

Java powers Android, enterprise systems, and some of the world's largest backends. Learn OOP principles, Spring Boot, and system design fundamentals in one structured track.

📘 40 Lessons
⏱ ~28 hrs
🎯 Beginner → Backend
🌐 English
⭐ 4.8 (1.8k reviews)
👥 10,400 enrolled
Free
Full access, no credit card required
Start Learning Now Preview Curriculum

This course includes

✓ 40 structured lessons
✓ OOP deep dive
✓ Spring Boot module
✓ REST API project
✓ System design intro
✓ Certificate on completion
Overview
Curriculum
Requirements
Instructor

What you'll learn

✓ Java syntax, types, and control flow
✓ OOP: classes, inheritance, polymorphism
✓ Interfaces, abstract classes & generics
✓ Java Collections Framework
✓ Exception handling & multithreading
✓ Spring Boot fundamentals
✓ Building RESTful APIs
✓ System design basics

Course Curriculum

Module 1 — Java Basics
8 lessons · ~4 hrs
⌄
▶ JDK Setup & Hello World 12 min
▶ Data Types & Variables 18 min
▶ Operators & Control Flow 16 min
▶ Arrays & Strings 22 min
▶ Methods & Overloading 18 min
▶ Recursion 20 min
▶ StringBuilder & Wrappers 14 min
📝 Module Quiz 10 min
Module 2 — OOP in Depth
9 lessons · ~4.5 hrs
⌄
▶ Classes & Objects 22 min
▶ Constructors & this keyword 16 min
▶ Inheritance 20 min
▶ Polymorphism & Overriding 18 min
▶ Abstract Classes 15 min
▶ Interfaces 18 min
▶ Generics 20 min
▶ Collections Framework 25 min
🛠 Project: Bank Account System —
Module 3 — Spring Boot & APIs
10 lessons · ~5 hrs
⌄
▶ Spring Boot Setup 16 min
▶ Dependency Injection 20 min
▶ REST Controllers 22 min
▶ Spring Data JPA 28 min
▶ Database with H2 / MySQL 20 min
▶ Exception Handling in APIs 15 min
▶ Authentication Basics (JWT) 24 min
▶ API Testing with Postman 14 min
▶ System Design Intro 20 min
🛠 Capstone: REST Blog API —

Requirements

Instructor

⚙️
Priya Nair
Backend Engineer · Java & Spring Boot Expert

Priya has 9 years of experience building high-traffic backend systems using Java and Spring Boot. She has worked at multiple unicorn startups and now focuses on making backend development accessible to every developer at any level.