Java Specialization

1

Java Web & Servlets Fundamentals

How Java serves the web: HTTP, the servlet container, the request/response lifecycle and your first servlet.

2

JSP, JSTL & the View Layer

Render dynamic HTML with JavaServer Pages, the expression language and the JSTL tag library.

3

Sessions, Cookies & Filters

State on a stateless protocol: sessions, cookies, filters and the front-controller pattern.

4

JDBC & the DAO Pattern

Talk to a database from a web app: JDBC, the DAO pattern, connection pooling and clean data access.

5

Spring Framework & the IoC Container

The heart of Spring: inversion of control, the application context and how the container wires your app.

6

Dependency Injection & Bean Lifecycle

Constructor vs field injection, bean scopes, the bean lifecycle and configuration styles.

1

Spring Configuration & Profiles

Java config vs annotations, component scanning, properties and environment profiles.

2

Spring AOP & Cross-Cutting Concerns

Aspect-oriented programming: aspects, advice, pointcuts and clean logging/transactions.

3

Spring Boot Essentials

Auto-configuration, starters, the embedded server and how Boot removes boilerplate.

4

Building REST APIs with Spring Boot

Controllers, request mapping, JSON, status codes and designing clean REST endpoints.

5

Validation & Exception Handling

Bean Validation, @ControllerAdvice, consistent error responses and robust input handling.

6

Configuration, Profiles & Actuator

Externalised configuration, profiles, health checks and production-ready metrics with Actuator.

1

Testing Spring Boot Applications

Slice tests, @SpringBootTest, MockMvc and testing controllers, services and repositories.

2

Spring Data JPA

Repositories, derived queries, pagination and removing data-access boilerplate.

3

Hibernate & Entity Mapping

ORM concepts, entities, the persistence context, identifiers and basic mappings.

4

Entity Relationships & Associations

One-to-one, one-to-many and many-to-many, fetch types and the N+1 problem.

5

JPQL, Criteria API & Queries

JPQL, the type-safe Criteria API, native queries and projections.

6

Transactions, Caching & Performance

@Transactional, isolation, the first/second-level cache and tuning persistence performance.

1

Spring Security Fundamentals

The filter chain, authentication, authorization, password encoding and method security.

2

JWT, OAuth2 & Securing APIs

Stateless auth with JWT, OAuth2 concepts, roles and securing REST endpoints.

3

Microservices Architecture & Design

Monolith vs microservices, bounded contexts, service boundaries and the trade-offs.

4

Building Microservices with Spring Boot

Independent services, REST/Feign communication, DTOs and per-service data.

5

Service Discovery, Config & Gateway

Service registry, centralized config, an API gateway and routing.

6

Resilience, Messaging & Observability

Circuit breakers, retries, async messaging and distributed tracing/metrics.

7

JavaFX Fundamentals & the Scene Graph

Desktop GUIs with JavaFX: Stage, Scene, the scene graph and the application lifecycle.

8

JavaFX Controls, Layouts & FXML

Buttons, lists, tables, layout panes and building UIs declaratively with FXML.

9

JavaFX Binding, Events & Styling

Properties and bindings, event handling and styling the UI with CSS.

10

Android Fundamentals with Java

The Android stack, project structure, activities, the lifecycle and your first app in Java.

11

Android UI, Activities & Navigation

Layouts, views, RecyclerView, intents and navigating between screens.

12

Android Data, Networking & APIs

Local storage with SQLite/Room, networking with Retrofit and consuming REST APIs.