π― Your complete guide to becoming a Java FullStack Developer
Backend Β· Frontend Β· DevOps Β· Microservices Β· Cloud
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| π Resources | π |
|---|---|
| Backend Resources | Jump β |
| Frontend Resources | Jump β |
| References | Jump β |
| Contribution | Jump β |
π½ Learn Java
π Foundation of everything. Master Java first!
| # | Category | Topics |
|---|---|---|
| 1 | π’ Basics | Classes Variables Loops OOPs Collections Generics Exception Handling (Checked vs Unchecked) |
| 2 | π΄ Advanced | Design Patterns JVM Threads Servlets & JSP Concurrency Garbage Collection Streams & Lambda Functional Interfaces Java Memory Model Reflection API Custom Annotations Java Modules (JPMS) JDBC Java 17+ Features (Records, Sealed Classes, Pattern Matching, Text Blocks) |
| 3 | π§ Build Tools | Maven Gradle Ant |
| 4 | π₯οΈ Servers | Tomcat Weblogic JBoss WebSphere Jetty |
| 5 | π§ͺ Testing | Unit Testing Integration Testing JUnit Mockito TestContainers Selenium |
| 6 | π Logging | Log4j Log4j2 Logback SLF4J |
π½ Learn Spring Framework
π The backbone of Java enterprise development
| # | Category | Topics |
|---|---|---|
| 1 | ποΈ Core | Bean Life Cycle Dependency Injection Inversion of Control Bean Factory & Application Context Bean Scopes (Singleton, Prototype, Request, Session) Spring Expression Language (SpEL) Event Handling |
| 2 | π Web | Annotations MVC Structure Configurations Integrating Libraries/Frameworks Profiles Exception Handling (@ControllerAdvice, @ExceptionHandler) Validation (@Valid, @Validated) Content Negotiation CORS Configuration |
| 3 | π― AOP | How AOP Works Creating PointCut, Join Point, Aspect |
π½ Learn Spring Boot
π Convention over Configuration - Build production apps fast!
| # | Topic |
|---|---|
| 1 | Importance of Spring Boot |
| 2 | Auto Configuration |
| 3 | Adding Configuration |
| 4 | Properties / YAML |
| 5 | Integrations with Libraries/Frameworks |
| 6 | Spring Boot Starters |
| 7 | Actuator (Health Checks, Metrics) |
| 8 | DevTools |
| 9 | Embedded Server Configuration |
| 10 | Spring Boot CLI |
| 11 | Profiles (dev, test, prod) |
π½ Learn REST API
π Build and consume APIs like a pro
| # | Category | Topics |
|---|---|---|
| 1 | π‘ HTTP Methods | GET POST PUT PATCH DELETE HEAD OPTIONS TRACE |
| 2 | π Status Codes | 1XX (Informational) 2XX (Success) 3XX (Redirection) 4XX (Client Error) 5XX (Server Error) |
| 3 | β¨ Best Practices | API Versioning HATEOAS Swagger / OpenAPI Rate Limiting Pagination & Sorting Content Negotiation (JSON, XML) |
π½ Learn Database
π Data is king - know where and how to store it
| # | Category | Topics |
|---|---|---|
| 1 | π¬ SQL | MySQL PostgreSQL Oracle SQL Server |
| 2 | π NoSQL | MongoDB Cassandra Redis DynamoDB |
| 3 | π Spring Data | Spring Data JPA Spring Data MongoDB Spring Data JDBC Spring Data Redis |
| 4 | β‘ ORM & Tools | Hibernate JPA Flyway (Migrations) Liquibase Connection Pooling (HikariCP) |
| 5 | π Database Design | Normalization Indexing Transactions & ACID CAP Theorem Sharding & Replication |
π½ Learn Spring Security
π Secure your applications from day one
| # | Topic |
|---|---|
| 1 | Authentication |
| 2 | Authorization |
| 3 | OAuth2 |
| 4 | Form Authentication |
| 5 | JWT (JSON Web Tokens) |
| 6 | CSRF Protection |
| 7 | CORS |
| 8 | Method Level Security (@PreAuthorize, @Secured) |
| 9 | Role-Based Access Control (RBAC) |
| 10 | Session Management |
| 11 | SSO (Single Sign-On) |
| 12 | Spring Security Filters Chain |
π½ Learn Microservices
π Build scalable, distributed systems
| # | Category | Topics |
|---|---|---|
| 1 | βοΈ Spring Cloud | Spring Cloud Gateway Spring Cloud Config Spring Cloud Circuit Breaker Spring Cloud OpenFeign Spring Cloud Sleuth Eureka (Service Discovery) Resilience4j |
| 2 | π³ DevOps | Docker Kubernetes AWS / GCP / Azure CI/CD (Jenkins, GitHub Actions) Terraform Helm Charts |
| 3 | π Patterns | Aggregator CQRS SAGA Event Sourcing API Gateway Service Mesh Circuit Breaker Strangler Fig |
| 4 | π¨ Message Queues | Apache Kafka RabbitMQ AWS SQS ActiveMQ |
| 5 | π Observability | ELK Stack (Elasticsearch, Logstash, Kibana) Prometheus + Grafana Zipkin / Jaeger (Distributed Tracing) Micrometer |
π½ Learn Web Fundamentals
π Before any Java frontend framework, master the web basics!
| # | Category | Topics |
|---|---|---|
| 1 | π HTML5 | Semantic Elements Forms & Validation Accessibility (a11y) SEO Basics |
| 2 | π¨ CSS3 | Flexbox Grid Responsive Design Media Queries CSS Variables Animations & Transitions |
| 3 | β‘ JavaScript | ES6+ Features DOM Manipulation Fetch API / AJAX Event Handling Promises & Async/Await |
| 4 | π¨ CSS Frameworks | Bootstrap Tailwind CSS Bulma |
| 5 | π οΈ Tools | npm / yarn Webpack / Vite Browser DevTools |
π½ Learn JSP
π Classic Java web technology - great for understanding foundations
| # | Category | Topics |
|---|---|---|
| 1 | π’ Basics | JSP Lifecycle Scriptlets, Expressions, Declarations Implicit Objects (request, response, session, application) |
| 2 | π·οΈ Tag Libraries | JSTL (JSP Standard Tag Library) Custom Tag Libraries Expression Language (EL) |
| 3 | ποΈ Architecture | MVC with JSP + Servlets Request Dispatching (forward, include) Filters & Listeners |
| 4 | π¦ Integration | JDBC with JSP Session Management Error Handling Pages |
β οΈ 2026 Status: Legacy - mainly for maintaining existing projects. Prefer Thymeleaf for new projects.
π½ Learn Thymeleaf
π Modern server-side template engine - Spring Boot's best friend!
| # | Category | Topics |
|---|---|---|
| 1 | π’ Basics | Natural Templates (HTML5-friendly) Standard Expressions (${...}, *{...}, #{...}, @{...}) Text, Iteration, Conditionals |
| 2 | π Layout | Template Fragments Fragment Expressions Layout Dialect Decorate Pattern |
| 3 | π Spring Integration | Spring MVC + Thymeleaf Form Binding & Validation Spring Security Dialect Message Externalization (i18n) |
| 4 | π΄ Advanced | Custom Dialects Inline JavaScript (th:inline) Template Caching Preprocessing |
β 2026 Status: Actively maintained & widely used. Recommended for server-rendered Java web apps.
π½ Learn Vaadin
π Build rich web UIs using only Java - no JS required!
| # | Category | Topics |
|---|---|---|
| 1 | π’ Basics | Vaadin Flow Component API Layouts (VerticalLayout, HorizontalLayout, FormLayout) Navigation & Routing |
| 2 | π Forms & Data | Data Binding (Binder) Validation Grid Component CRUD Operations |
| 3 | π¨ Theming | Lumo Theme Custom CSS Dark/Light Mode Responsive Design |
| 4 | π΄ Advanced | Web Components Integration PWA (Progressive Web App) Push Notifications (Server Push) Lazy Loading REST API Integration |
| 5 | π Spring Integration | Vaadin + Spring Boot Spring Security with Vaadin Spring Data with Vaadin |
β 2026 Status: Growing in popularity for enterprise dashboards & internal tools.
π½ Learn JSF
π Component-based web framework standardized in Jakarta EE
| # | Category | Topics |
|---|---|---|
| 1 | π’ Basics | JSF Lifecycle Managed Beans / CDI Beans Facelets Templating Navigation Rules |
| 2 | π§© Components | Standard Components (h:inputText, h:dataTable, etc.) Converters & Validators Composite Components |
| 3 | π Integration | CDI (Contexts and Dependency Injection) EJB Integration JPA Integration PrimeFaces (Component Library) |
| 4 | π΄ Advanced | Custom Components Ajax with JSF (f:ajax) Exception Handling View Scope & Conversation Scope |
β οΈ 2026 Status: Declining - mainly for Jakarta EE legacy maintenance (government, finance).
π½ Learn JavaFX
π Modern UI platform for desktop, embedded & mobile apps
| # | Category | Topics |
|---|---|---|
| 1 | π’ Basics | Stage, Scene, Nodes FXML (XML-based UI Layout) Scene Builder (Visual Designer) Event Handling |
| 2 | π¨ Styling | CSS Styling in JavaFX Themes & Skins Custom Controls |
| 3 | π Rich Features | Charts & Graphs Animations & Transitions Media Playback (Audio, Video) WebView (Embedded Browser) |
| 4 | π΄ Advanced | Properties & Bindings Concurrency (Task, Service) Canvas & 2D/3D Graphics Drag and Drop Printing API |
| 5 | π¦ Packaging | jpackage (Native Installers) GraalVM Native Image Cross-Platform Distribution |
β 2026 Status: Well-established for desktop apps. Not for web.
π½ Modern Integration Patterns
π Connect Java backends with modern frontend frameworks
| # | Category | Topics |
|---|---|---|
| 1 | π REST + SPA | Spring Boot REST API + React Spring Boot REST API + Angular Spring Boot REST API + Vue.js |
| 2 | π‘ Real-Time | WebSocket with Spring Server-Sent Events (SSE) STOMP Protocol |
| 3 | π Auth Integration | JWT with SPA Frontends OAuth2 Login Flows CORS Configuration for SPAs |
| 4 | π¦ Deployment | Serving SPA from Spring Boot Separate Frontend/Backend Deployment Docker Multi-Stage Builds Nginx Reverse Proxy |
| 5 | π HTMX + Java | HTMX with Spring Boot + Thymeleaf Hypermedia-Driven Approach Minimal JS with Server-Side Rendering |
- Tutorialspoint | Java
- Spring Framework Official Documentation
- Spring Boot Official Documentation
- Baeldung - Java & Spring Tutorials
- Java Official Documentation (Oracle)
- Spring Guides
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π’ BEGINNER π‘ INTERMEDIATE π΄ ADVANCED
βββββββββββββ βββββββββββββββββ βββββββββββββ
β Java Basics βββββββββββββββΆ πΏ Spring Framework βββββββββββΆ π§© Microservices
π Spring Boot βοΈ Cloud & DevOps
π HTML, CSS, JS ββββββββββββΆ π Thymeleaf β‘ Modern Integration
π REST API π Observability
ποΈ SQL Basics βββββββββββββββΆ π Spring Security π Vaadin / π₯οΈ JavaFX
π NoSQL π JSF (if needed)
- Java Roadmap for Beginners π
- How to Master Spring Boot - Complete Spring Boot Roadmap π
- Learning Spring Boot in 2022 | Roadmap π
- Thymeleaf Official Tutorials π
- Vaadin Getting Started π
- JavaFX Getting Started π
If you think anything can be improved, please do suggest:
πΉ Open pull request with improvements πΉ Discuss ideas in issues πΉ Star β the repo if you found it helpful!
Made with β€οΈ for the Java Community
β Star this repo if you found it useful!