Roadmap & Complete Guide
Java & Spring Boot Complete Roadmap
Master Java, Spring Boot Core, Web, Data JPA, Security, Microservices & Annotations from scratch
Topics Architecture Roadmap
1. Spring & Spring Boot Intro
2. Spring Boot Core Concepts
- Constructor Injection (Step-by-Step Guide)
- Setter Injection (Step-by-Step Guide)
- Field Injection & Why Avoid It
- IoC (Inversion of Control) Explained Simply
- Spring Bean Creation & Lifecycle
- Spring Bean Scopes (Singleton vs Prototype)
- Configuration Classes (@Configuration & @Bean)
- application.properties Guide
- application.yml Guide
- Spring Profiles (@Profile)
- ApplicationContext Explained
3. Spring Boot Web & REST APIs
- Spring MVC in Boot
- Controller Layer (@RestController)
- Service Layer (@Service)
- Repository Layer (@Repository)
- DTO Layer (Data Transfer Objects)
- Global Exception Handling (@ControllerAdvice)
- @ExceptionHandler Method Guide
- Servlet Filters (javax/jakarta.servlet.Filter)
- Spring Interceptors (HandlerInterceptor)
4. Spring Boot Data Access (JPA & Hibernate)
- Spring Data JPA: JpaRepository Guide
- CRUD Operations with Spring Data JPA
- Derived Query Methods
- Pagination & Sorting (Pageable & Sort)
- JPA Projections
- Hibernate Entity States
- Lazy vs Eager Loading
- JPA Cascading Options (CascadeType)
- HikariCP Connection Pool
- H2 In-Memory Database
- MySQL & PostgreSQL Setup
- ACID Properties in Transactions
- @Transactional Usage & Rollbacks
- Transaction Isolation Levels
- JdbcTemplate (Raw SQL Execution)
- RowMapper Interface