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JavaFullStack Mastery Roadmap 2025

Phase 1: Programming & Core Java

0–3 months

Understand programming fundamentals, OOP, Java syntax, and problem solving

Java Basics

  1. 1. JVM, JRE, JDK
  2. 2. Data Types, Variables, Operators
  3. 3. Input/Output, Loops, Conditionals
  4. 4. Functions & Methods

Object-Oriented Programming

  1. 1. Classes & Objects
  2. 2. Constructors
  3. 3. Inheritance, Polymorphism, Encapsulation, Abstraction

Core Java Concepts

  1. 1. Packages, Access Modifiers
  2. 2. Exception Handling
  3. 3. Wrapper Classes
  4. 4. this, super, final, static

Collections Framework

  1. 1. List, Set, Map, Queue
  2. 2. Comparable vs Comparator
  3. 3. Generics

Java I/O & File Handling

  1. 1. FileReader, FileWriter, BufferedReader, etc.

Java 8+ Features

  1. 1. Streams API
  2. 2. Lambda Expressions
  3. 3. Functional Interfaces
  4. 4. Optional, Method References

Practice

  1. 1. Solve 100+ problems on LeetCode, HackerRank, CodeStudio

Mini Projects

  1. 1. Console-based Library Management System
  2. 2. Banking App with OOP + Exception handling
Phase 1
Phase 2
Phase 2: Advanced Java & Backend Development

3–6 months

Move into enterprise-level backend development using modern frameworks

Java Advanced

  1. 1. Multithreading & Concurrency
  2. 2. Executors, Synchronization, Locks
  3. 3. Java Memory Management, Garbage Collection

Database Connectivity

  1. 1. JDBC (Database Connectivity)

Build Tools & Dependencies

  1. 1. Maven / Gradle — Dependency Management
  2. 2. Maven structure, Lifecycle

Logging

  1. 1. SLF4J, Log4J, Lombok
Phase 2
Phase 3
Phase 3: Spring & Spring Boot

6–9 months

Master industry backend stack with REST APIs, security, and testing

Spring Core

  1. 1. IoC Container, Beans, Dependency Injection

Spring Boot

  1. 1. Auto-Configuration, Starters, Profiles

REST API Development

  1. 1. Exception Handling (ControllerAdvice)

Spring Data JPA

  1. 1. ORM, Entity Relationships, CRUD Repositories
  2. 2. Hibernate, JPQL, Criteria API

Spring Security

  1. 1. Authentication, Authorization
  2. 2. JWT-based login
  3. 3. Role-based access control

Spring AOP

  1. 1. Cross-cutting concerns, Logging, Transactions

Spring Validation

  1. 1. DTOs, Request Validation, Custom Validators

Spring Testing

  1. 1. JUnit, Mockito, Integration tests

Projects

  1. 1. RESTful Employee Management System
  2. 2. E-Commerce Backend with Authentication & Cart APIs
Phase 3
Phase 4
Phase 4: Databases & Persistence Layer

Parallel with Phase 3

Master how Java apps connect and persist data efficiently

SQL Basics

  1. 1. Joins, Subqueries, Aggregations

RDBMS

  1. 1. MySQL / PostgreSQL setup

NoSQL

  1. 1. MongoDB: Collections, Documents, CRUD

Database Design

  1. 1. Normalization, Indexing, Transactions

Project

  1. 1. Database schema for E-Commerce / Blogging System
Phase 4
Phase 5
Phase 5: Frontend Development

9–12 months

Learn modern frontend for full-stack integration

Web Fundamentals

  1. 1. HTML5, CSS3, JavaScript (ES6+)
  2. 2. DOM Manipulation, Fetch API

Frontend Framework - React.js

  1. 1. Components, Props, State
  2. 2. Hooks (useState, useEffect)
  3. 3. Routing, Axios, Context API
  4. 4. Form handling, validation

UI Libraries

  1. 1. TailwindCSS / Bootstrap / Material UI

State Management

  1. 1. Redux Toolkit / Zustand

Testing

  1. 1. Jest / React Testing Library

Mini Project

  1. 1. React Frontend for E-Commerce Backend
  2. 2. Login/Register, Product Listing, Cart, Orders
  3. 3. Integrate with Spring Boot REST APIs
Phase 5
Phase 6
Phase 6: API Integration & Fullstack Development

12–14 months

Connect React frontend with Spring Boot backend

API Integration Topics

  1. 1. REST API Consumption (Axios, Fetch)
  2. 2. CORS Configuration in Spring Boot
  3. 3. Environment Variables & Build Config
  4. 4. JWT Authentication Flow (Frontend ↔ Backend)
  5. 5. File Uploads, FormData
  6. 6. Pagination, Sorting, Filtering APIs
  7. 7. API Error Handling (Global Exception Handling)

Capstone Project - Full-Stack E-Commerce Platform

  1. 1. Spring Boot + React + PostgreSQL + JWT + Docker
  2. 2. Admin Panel (Add/Edit/Delete Products)
  3. 3. User Panel (Cart, Wishlist, Orders)
  4. 4. Email/Password Authentication
  5. 5. Payment Gateway (Stripe / Razorpay)
Phase 6
Phase 7
Phase 7: DevOps, CI/CD & Deployment

14–16 months

Learn how to deploy and scale full-stack apps

Git & GitHub

  1. 1. Branching, PRs, Merge Conflicts, CI triggers

Build & Deploy

  1. 1. Docker (Dockerfile, Compose)
  2. 2. Jenkins / GitHub Actions
  3. 3. CI/CD Pipelines

Cloud Services

  1. 1. AWS (EC2, RDS, S3)
  2. 2. Render / Railway / Vercel / Netlify

Monitoring

  1. 1. Prometheus, Grafana

Containerization

  1. 1. Run fullstack project inside containers
Phase 7
Phase 8
Phase 8: System Design, DSA & Interview Prep

16–18 months

Get job-ready for top-tier companies

System Design (Low + High Level)

  1. 1. Load Balancers, Caching, Database Sharding
  2. 2. REST vs GraphQL
  3. 3. Microservices, Message Queues (Kafka)

DSA for Interviews

  1. 1. Arrays, Strings, LinkedList, Stack, Queue
  2. 2. Trees, Graphs, Recursion
  3. 3. Dynamic Programming

Design Patterns

  1. 1. Singleton, Factory, Observer, Builder, MVC

Mock Projects

  1. 1. URL Shortener System
  2. 2. Chat App (WebSocket)
  3. 3. Microservices-based Blog Platform
Phase 8
Phase 9
Phase 9: Portfolio & Real-World Practice

18–20 months

Build a professional portfolio & contribute to open source

Portfolio Building Steps

  1. 1. Host projects on GitHub + CI/CD pipeline
  2. 2. Write README + deployment docs
  3. 3. Build personal portfolio website
  4. 4. Contribute to open-source Java or Spring Boot repos
  5. 5. Prepare for technical interviews
Phase 9
Phase 10
Phase 10: Tools & Tech Stack Summary

Complete Toolkit

Essential tools and technologies for Java full-stack development

Language

  1. 1. Java 17+

Backend

  1. 1. Spring Boot, Spring Data JPA, Spring Security

Frontend

  1. 1. React.js, TailwindCSS

Database

  1. 1. MySQL, PostgreSQL, MongoDB

Tools

  1. 1. Maven, Git, Docker, Postman

Cloud

  1. 1. AWS, Render, Railway

CI/CD

  1. 1. Jenkins, GitHub Actions

Testing

  1. 1. JUnit, Mockito, Jest

🎉 Congratulations! You're a javaFullStack Developer

You've mastered the complete javaFullStack Roadmap and are now ready to build scalable, high-performance applications.