Part of the Java Developer & Placement Programme

Java Programming

Learn Java step by step, from your first program to data structures and algorithms, Spring Boot backends and technical interviews. Short lessons in simple English, with quizzes, practice and mini projects.

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The journey

One path, stage by stage

Six stages take you from your first program to job-ready. Open a stage to see its sections, or follow it from the start.

Every topic of every stage in the full roadmap

Where to start

Pick your starting point

New to programming
Start at Learn Java and move stage by stage. Begin Master DSA as soon as you finish Collections.
Start at Stage 1: Learn Java
Preparing for placements or job interviews
Finish Learn Java, then focus on Master DSA and Get Placement Ready. Add Master Java topics as interviews ask for them.
Start at Stage 1: Learn Java
Developers moving to Java backend
If you already know Java and DSA, go straight to Build Applications and Work Like a Developer.
Start at Stage 4: Build Applications

Syllabus

Start learning now

Every section, module by module. Open any section to see its lessons.

SQL and Database Design Questions

Sign in45 min

JDBC, PreparedStatement and SQL Injection

Sign in40 min

REST Principles, HTTP Methods and Status Codes

Sign in40 min

Dependency Injection, Beans and Spring Boot

Sign in45 min

JPA Entities, Lazy Loading and the N+1 Problem

Sign in45 min

Authentication, JWT and Password Hashing

Sign in50 min

Testing, Design Patterns and Basic System Design Questions

Sign in50 min

Practice: Java Backend Interview Drill

Sign in55 min

What you will learn

Write, run and debug Java programs from scratch: variables, conditions, loops, methods, arrays and strings
Model real things with classes and objects, and choose the right collection with type-safe generics
Solve coding-round problems with the main patterns, data structures and algorithms
Design databases in SQL and build REST APIs with Spring Boot, Spring Data JPA and Spring Security
Test, debug and package your code, and ship it with Docker and a simple CI pipeline
Build real backend projects on GitHub and answer Java technical interview questions with confidence

One path, stage by stage

Learn Java

Master DSA

Master Java

Build Applications

Work Like a Developer

Get Placement Ready

Pick your starting point

New to programming

Preparing for placements or job interviews

Developers moving to Java backend

Start learning now

Java Basics

Git, GitHub & Developer Setup

Java OOP (Object-Oriented Programming)

Java Collections

Problem Solving & Coding Patterns

Data Structures & Algorithms in Java

Coding Challenges

Streams & Modern Java

Files, I/O & Robust Error Handling

Multithreading & Concurrency

JVM Internals & Memory Management

SQL & Database Design

JDBC & Database Connectivity

Web Fundamentals, HTTP & REST APIs

Spring Framework & Spring Boot

Spring Data JPA & Hibernate

Spring Security & Authentication

Testing, Debugging & Code Quality

Design Patterns & SOLID in Practice

Docker, Deployment & CI/CD Basics

Backend Architecture & System Design Fundamentals

Real-World Java Projects

Java Technical Interview Preparation

How Technical Interviews Work

Core Java Questions

OOP Questions

Collections & Generics Questions

Output Prediction & Debugging Rounds

DSA in Interviews

Streams & Modern Java Questions

Multithreading & JVM Questions

Backend, Spring & Database Questions

Talking About Your Projects

Mock Technical Interviews

Placement Assessments & Career Preparation

What you will learn

One path, stage by stage

Learn Java

Master DSA

Master Java

Build Applications

Work Like a Developer

Get Placement Ready

Pick your starting point

New to programming

Preparing for placements or job interviews

Developers moving to Java backend

Start learning now

Java Basics

Git, GitHub & Developer Setup

Java OOP (Object-Oriented Programming)

Java Collections

Problem Solving & Coding Patterns

Data Structures & Algorithms in Java

Coding Challenges

Streams & Modern Java

Files, I/O & Robust Error Handling

Multithreading & Concurrency

JVM Internals & Memory Management

SQL & Database Design

JDBC & Database Connectivity

Web Fundamentals, HTTP & REST APIs

Spring Framework & Spring Boot

Spring Data JPA & Hibernate

Spring Security & Authentication

Testing, Debugging & Code Quality

Design Patterns & SOLID in Practice

Docker, Deployment & CI/CD Basics