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	[ ]

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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.

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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.	[ ]

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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	[ ]

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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.	[ ]

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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.

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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.

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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.

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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

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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.