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JavaRoadmap

JavaDeveloperRoadMap ✅

Here’s a structured day-wise routine to learn Java and Spring Boot. Each day focuses on a specific topic, with a column to tick off completed topics and resources (documents and YouTube playlists).

Day Topics Tasks & Resources Complete
1 Java Basics - Variables, Data Types, Operators
- Java Basics - Baeldung
- YouTube Playlist: Java Basics		 [ ]
2 Control Flow Statements - If-else, Switch, Loops
- Control Statements - W3Schools
- YouTube: Java Loops		 [ ]
3 Object-Oriented Programming (OOP) - Classes, Objects, Inheritance, Polymorphism
- OOP - GeeksforGeeks
- YouTube: OOP in Java		 [ ]
4 Java Collections Framework - List, Set, Map
- Collections - Oracle Docs
- YouTube: Java Collections		 [ ]
5 Exception Handling - Try-catch, finally
- Exception Handling - Baeldung
- YouTube: Java Exceptions		 [ ]
6 Java I/O - File Handling
- Java I/O - Baeldung
- YouTube: Java File Handling		 [ ]
7 Multithreading - Threads, Synchronization
- Java Threads - GeeksforGeeks
- YouTube: Java Threads		 [ ]
8 Java 8+ Features - Lambda, Stream API
- Java 8 Features - Baeldung
- YouTube: Java 8 Features		 [ ]
9 SQL Basics - CRUD, Joins
- SQL Basics - W3Schools
- YouTube: SQL for Beginners		 [ ]
10 Hibernate Basics - ORM Concepts, JPA
- Hibernate - Baeldung
- YouTube: Hibernate Tutorial		 [ ]
11 Spring Core - DI, IoC
- Spring Core - Spring.io
- YouTube: Spring Core		 [ ]
12 Spring Boot Basics - Setup, Auto-Config
- Spring Boot - Baeldung
- YouTube Playlist: Spring Boot		 [ ]
13 RESTful APIs - Controllers, Exception Handling
- REST APIs - Spring.io
- YouTube: REST API in Spring Boot		 [ ]
14 Spring Security - Authentication & Authorization
- Spring Security - Baeldung
- YouTube: Spring Security		 [ ]
15 Microservices - Eureka, API Gateway
- Microservices with Spring - Spring.io
- YouTube Playlist: Microservices with Spring		 [ ]
16 Testing with Spring Boot - JUnit, Mockito
- Spring Boot Testing - Baeldung
- YouTube: Spring Boot Testing		 [ ]
17 Docker Basics - Dockerize Spring Boot App
- Docker Tutorial
- YouTube: Docker for Beginners		 [ ]

Here’s a detailed 2-month roadmap to become an industry-ready Java and Spring Boot developer. Each day is structured with a clear syllabus, resources, and checkboxes to track your progress. At the end, three projects with timelines are provided.

Month 1: Core Java Mastery

Day Topics Resources Complete
1 Java Installation, IDE Setup, Hello World - Java Installation
- YouTube: Setup		 [ ]
2 Variables, Data Types, Operators - Java Basics - W3Schools
- YouTube: Variables		 [ ]
3 Control Flow (if-else, switch, loops) - Control Flow - Baeldung
- YouTube: Loops		 [ ]
4 Functions, Arrays - Functions - GeeksforGeeks
- YouTube: Arrays		 [ ]
5 Object-Oriented Programming (OOP) - OOP in Java - Baeldung
- YouTube: OOP Concepts		 [ ]
6 OOP Deep Dive: Encapsulation, Inheritance, Polymorphism, Abstraction - GeeksforGeeks: OOP Concepts
- YouTube: Deep Dive		 [ ]
7 Java Collections: List, Set, Map - Java Collections - Oracle Docs
- YouTube: Java Collections		 [ ]
8 Exception Handling - Java Exceptions - Baeldung
- YouTube: Exception Handling		 [ ]
9 File Handling: Java I/O - Java I/O - GeeksforGeeks
- YouTube: File Handling		 [ ]
10 Multithreading Basics - Java Threads - GeeksforGeeks
- YouTube: Multithreading		 [ ]
11 Lambda Expressions, Functional Interfaces - Lambda - Baeldung
- YouTube: Lambda Expressions		 [ ]
12 Streams API, Optional Class - Stream API - Baeldung
- YouTube: Streams		 [ ]
13 Practice: Build a small Java application (e.g., Calculator, Library System) - Use knowledge of OOP, Collections, and Exception Handling. [ ]

Month 2: Spring Boot and Microservices

Day Topics Resources Complete
14 Introduction to Spring and Spring Boot - Spring Boot - Baeldung
- YouTube: Spring Boot		 [ ]
15 Dependency Injection (DI), Inversion of Control (IoC) - Spring DI - Spring.io
- YouTube: DI and IoC		 [ ]
16 Building RESTful APIs with Spring Boot - Spring REST API - Baeldung
- YouTube: Spring Boot REST API		 [ ]
17 Spring Boot Data Access: JPA, Hibernate - Spring Data JPA - Baeldung
- YouTube: JPA Tutorial		 [ ]
18 Testing Spring Boot Apps (JUnit, Mockito) - Testing - Baeldung
- YouTube: Testing in Spring Boot		 [ ]
19 Spring Security: Authentication and Authorization - Spring Security - Baeldung
- YouTube: Spring Security		 [ ]
20 Building Microservices: Service Discovery (Eureka), API Gateway - Spring Cloud - Baeldung
- YouTube: Microservices with Spring		 [ ]
21 Dockerizing a Spring Boot App - Docker - Spring.io
- YouTube: Docker Basics		 [ ]
22 Advanced Topics: Actuator, Monitoring, and Metrics - Spring Boot Actuator - Baeldung
- YouTube: Monitoring Spring Boot		 [ ]

Final Week: Industry-Ready Projects

Day Projects Timeframe Resources Complete
23-27 E-commerce Application: User login, product catalog, order management with database 5 Days Use Spring Boot, JPA, REST API, and MySQL. [ ]
28-30 Blogging Platform: User registration, post creation, comments 3 Days Use Spring Boot, Spring Security, Hibernate, and REST API. [ ]
31-34 Microservices-Based Application: Build a movie ticket booking system with service discovery 4 Days Use Spring Boot, Eureka, and API Gateway. [ ]

Detailed Plan for Industry-Ready Projects

Here’s a comprehensive breakdown of the three projects mentioned earlier. Each includes requirements, architecture, technologies, and a timeline for implementation.

Project 1: E-Commerce Application

Objective:

Build a basic e-commerce platform with features like user authentication, product management, and order processing.

Technologies:

  • Backend: Java, Spring Boot (REST API), JPA, Hibernate
  • Database: MySQL or PostgreSQL
  • Frontend (Optional): HTML/CSS/JavaScript (or use Postman to test APIs)

Features:

  1. User Management:

    • User registration and login (Spring Security with JWT)
    • Role-based access (e.g., Admin and Customer)

  2. Product Management:

    • Add, view, update, and delete products (Admin)
    • List and search products (Customer)

  3. Order Management:

    • Place, view, and cancel orders (Customer)
    • Manage order statuses (Admin)

  4. Database Schema:

    • users: ID, username, password, roles
    • products: ID, name, description, price, stock
    • orders: ID, user_id, product_id, quantity, status

Timeline:

Day Tasks Resources
1 Set up Spring Boot project and database (MySQL) Spring Boot with MySQL
2 Implement user registration and login with JWT authentication Spring Security with JWT
3 Create APIs for product management (CRUD operations) REST API with Spring Boot
4 Build order management APIs (place, view, cancel orders) Spring Data JPA
5 Finalize and test all APIs Use Postman for testing.

Project 2: Blogging Platform

Objective:

Develop a blogging platform where users can register, create posts, and comment on blogs.

Technologies:

  • Backend: Java, Spring Boot, JPA, Spring Security
  • Database: MySQL or PostgreSQL
  • Frontend (Optional): React or Angular for user interface

Features:

  1. User Authentication:

    • Register, login, and manage sessions (JWT)

  2. Blog Post Management:

    • Create, update, delete blog posts (Users)
    • View posts (Public)

  3. Comments:

    • Add and view comments on posts (Registered Users)

  4. Database Schema:

    • users: ID, username, password, roles
    • posts: ID, user_id, title, content, created_at
    • comments: ID, post_id, user_id, content, created_at

Timeline:

Day Tasks Resources
1 Set up Spring Boot project and database Spring Boot Basics
2 Implement user registration and authentication Spring Security with JWT
3 Create APIs for blog post management (CRUD operations) RESTful APIs in Spring
4 Add comment functionality and connect it to blog posts Spring Boot Relationships
5 Test and deploy the application Use Docker or deploy to a platform like Heroku.

Project 3: Microservices-Based Movie Ticket Booking System

Objective:

Build a microservices application for booking movie tickets, incorporating service discovery and an API gateway.

Technologies:

  • Backend: Java, Spring Boot, Eureka, Spring Cloud Gateway
  • Database: MySQL
  • Frontend (Optional): React or Angular

Microservices:

  1. User Service:

    • Handles user registration and login.

  2. Movie Service:

    • Manage movies, showtimes, and theater details.

  3. Booking Service:

    • Book tickets, check booking history.

  4. Service Discovery & API Gateway:

    • Use Eureka for service discovery.
    • Use Spring Cloud Gateway for routing.

Database Schema:

  1. User Service:
    • users: ID, name, email, password, roles
  2. Movie Service:
    • movies: ID, name, genre, duration
    • showtimes: ID, movie_id, theater, date_time
  3. Booking Service:
    • bookings: ID, user_id, showtime_id, seats

Timeline:

Day Tasks Resources
1 Create and set up microservices (User, Movie, Booking) Spring Boot Microservices
2 Implement user authentication and login Spring Security
3 Develop movie and showtime management APIs RESTful APIs
4 Add booking functionality and connect services Spring Boot Relationships
5 Integrate Eureka and API Gateway Eureka and Gateway
6 Test and monitor microservices Use Spring Boot Actuator and Postman.
7 Containerize the application using Docker Docker with Spring Boot

Next Steps

  1. Complete all three projects in sequence.
  2. Deploy at least one project to a cloud platform like AWS or Heroku.
  3. Build your portfolio with these projects on GitHub.