Here’s a complete index (roadmap) to become a Full-Stack Java Developer, covering backend (Java-based), frontend technologies, databases, tools, and deployment.
1. Programming Foundations
Core Java Data types, loops, arrays, methods OOP (classes, inheritance, abstraction, interfaces) Collections Framework (List, Map, Set) Exception Handling Java 8+ Features (Lambdas, Streams, Functional Interfaces) Build Tools: Maven or Gradle IDE: IntelliJ IDEA / Eclipse / VS Code
2. Backend Development with Java
Spring Framework (Main Focus) Spring Core (IoC, Beans, Dependency Injection) Spring Boot (auto-configuration, starter dependencies) Spring MVC (REST APIs) Spring Data JPA Spring Security (JWT, OAuth2) RESTful Services Controllers, Services, Repositories Validation, DTOs, API versioning
3. Frontend Development
HTML, CSS, JavaScript HTML5, Flexbox/Grid, Forms JS basics, DOM, ES6+ Frontend Frameworks (Pick One) React.js (most popular with Java) Angular Vue.js REST API Integration (using fetch / axios) UI Frameworks: Bootstrap, Tailwind CSS
4. Databases
SQL Databases MySQL, PostgreSQL, Oracle CRUD operations, Joins, Indexes ORM Hibernate Spring Data JPA (Repositories, Query Methods) NoSQL (Optional) MongoDB with Spring Data MongoDB
5. Tools & Practices
Version Control: Git, GitHub/GitLab Testing Frameworks: JUnit & Mockito for backend Jest/React Testing Library (if using React) API Testing: Postman Documentation: Swagger / OpenAPI
6. DevOps & Deployment
Build and Package with Maven/Gradle Dockerize the application (backend & frontend) Deploy to: Heroku / Render AWS / Azure / GCP Kubernetes (for advanced setups) CI/CD Pipelines: GitHub Actions, Jenkins
7. Optional: Advanced Topics
Microservices with Spring Cloud API Gateways (Zuul, Spring Cloud Gateway) Reactive Programming (Spring WebFlux) GraphQL with Java (e.g., Netflix DGS, GraphQL Java) Kafka / RabbitMQ (Messaging) Design Patterns & Clean Architecture
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