# 📚 Spring & Spring Boot — Syllabus Index

## 🟦 SECTION 1 — JAVA REVISION

### 1. Java Fundamentals
- Java Overview
- JDK, JRE, JVM
- Java Compilation & Execution
- Variables
- Data Types
- Type Casting
- Operators
- Conditional Statements
- Loops
- Arrays

### 2. Object-Oriented Programming
- Classes & Objects
- Constructors
- Encapsulation
- Inheritance
- Polymorphism
- Method Overloading
- Method Overriding
- Abstraction
- Abstract Classes
- Interfaces

### 3. Java Access & Modifiers
- Access Modifiers
- Non-Access Modifiers
- `static`
- `final`
- `this`
- `super`

### 4. Packages
- Packages
- Import
- Built-in Packages
- User-defined Packages

### 5. Exception Handling
- Exceptions
- Checked Exceptions
- Unchecked Exceptions
- `try`
- `catch`
- `finally`
- `throw`
- `throws`
- Custom Exceptions

### 6. Java Collections
- Collection Framework
- List
- ArrayList
- LinkedList
- Set
- HashSet
- Map
- HashMap
- Iterator
- Generics

### 7. Java 8+ Features
- Lambda Expressions
- Functional Interfaces
- Method References
- Stream API
- Optional
- forEach

### 8. Java I/O Basics
- File Handling
- Input Streams
- Output Streams

### 9. Important Java Concepts
- String
- StringBuilder
- StringBuffer
- Wrapper Classes
- Enum
- `equals()`
- `hashCode()`
- `toString()`

## 🟩 SECTION 2 — SPRING FRAMEWORK

### 1. Introduction to Spring
- What is Spring Framework
- Problems with Traditional Java Applications
- Spring Architecture
- Spring Modules
- Spring Ecosystem

### 2. Inversion of Control
- IoC
- IoC Container
- Dependency Management
- Dependency Injection

### 3. Dependency Injection
- Constructor Injection
- Setter Injection
- Field Injection
- Loose Coupling
- Tight Coupling

### 4. Spring Container
- BeanFactory
- ApplicationContext
- ApplicationContext Lifecycle

### 5. Spring Beans
- Spring Bean
- Bean Creation
- Bean Registration
- Bean Scope
- Singleton Scope
- Prototype Scope
- Request Scope
- Session Scope

### 6. Spring Configuration
- XML Configuration
- Java Configuration
- Annotation-based Configuration
- `@Configuration`
- `@Bean`

### 7. Component Scanning
- `@Component`
- `@Service`
- `@Repository`
- `@Controller`
- Component Scanning

### 8. Autowiring
- `@Autowired`
- `@Qualifier`
- `@Primary`
- Constructor Autowiring

### 9. Bean Lifecycle
- Bean Initialization
- Bean Destruction
- `@PostConstruct`
- `@PreDestroy`

### 10. Spring AOP
- Aspect-Oriented Programming
- Cross-Cutting Concerns
- Aspect
- Advice
- Join Point
- Pointcut
- Proxy
- Before Advice
- After Advice
- Around Advice

### 11. Spring MVC
- MVC Architecture
- Model
- View
- Controller
- DispatcherServlet
- Request Flow
- Response Flow

### 12. Spring Web Concepts
- HTTP
- HTTP Request
- HTTP Response
- URL
- HTTP Methods
- HTTP Status Codes
- JSON

### 13. Spring Application Architecture
- Controller Layer
- Service Layer
- Repository Layer
- Data Access Layer
- Layered Architecture

## 🟨 SECTION 3 — SPRING BOOT

### 1. Introduction to Spring Boot
- Spring Boot
- Spring vs Spring Boot
- Advantages of Spring Boot
- Spring Boot Architecture
- Convention over Configuration

### 2. Spring Initializr
- Project Creation
- Project Metadata
- Dependencies
- Maven Project

### 3. Spring Boot Project Structure
- Main Application Class
- Package Structure
- `pom.xml`
- `application.properties`
- `application.yml`

### 4. Spring Boot Application
- `@SpringBootApplication`
- `@Configuration`
- `@EnableAutoConfiguration`
- `@ComponentScan`
- Application Startup
- Application Lifecycle

### 5. Spring Boot Starters
- Spring Boot Starter
- Starter Web
- Starter Data JPA
- Starter Validation
- Starter Test

### 6. Auto Configuration
- Auto Configuration
- Conditional Configuration
- Spring Boot Configuration Mechanism

### 7. Embedded Server
- Embedded Tomcat
- Server Port
- Application Startup
- Server Configuration

### 8. Configuration & Properties
- `application.properties`
- `application.yml`
- Custom Properties
- Environment Variables
- Profiles
- Development Profile
- Production Profile

### 9. REST API
- REST
- RESTful API
- REST Architecture
- API Endpoints
- CRUD Operations

### 10. Controllers
- `@RestController`
- `@RequestMapping`
- `@GetMapping`
- `@PostMapping`
- `@PutMapping`
- `@DeleteMapping`

### 11. Request Handling
- `@PathVariable`
- `@RequestParam`
- `@RequestBody`
- Request Headers
- Request Validation

### 12. Response Handling
- JSON Response
- ResponseEntity
- HTTP Status Codes
- Response Structure

### 13. Service Layer
- `@Service`
- Business Logic
- Service Interface
- Service Implementation

### 14. Spring Data JPA
- JPA
- Hibernate
- Spring Data JPA
- ORM
- Entity
- Repository

### 15. Database Integration
- Database Configuration
- H2 Database
- MySQL
- Datasource
- JDBC
- JPA Configuration

### 16. Entity Mapping
- `@Entity`
- `@Table`
- `@Id`
- `@GeneratedValue`
- `@Column`
- Primary Key
- Relationships
- `@OneToOne`
- `@OneToMany`
- `@ManyToOne`
- `@ManyToMany`

### 17. Repository Layer
- JpaRepository
- CrudRepository
- Repository Methods
- CRUD Operations
- Query Methods
- Custom Queries

### 18. DTO
- DTO
- Request DTO
- Response DTO
- Entity vs DTO

### 19. Validation
- Bean Validation
- `@Valid`
- `@NotNull`
- `@NotBlank`
- `@NotEmpty`
- `@Size`
- `@Email`
- Custom Validation

### 20. Exception Handling
- Exception Handling in REST
- `@ExceptionHandler`
- `@ControllerAdvice`
- `@RestControllerAdvice`
- Custom Exceptions
- Error Response

### 21. Logging
- Logging
- Log Levels
- SLF4J
- Logger

### 22. Testing
- Unit Testing
- Integration Testing
- Spring Boot Test
- JUnit
- MockMvc
- API Testing

### 23. Spring Boot Security — Introduction
- Authentication
- Authorization
- Spring Security
- Password Encoding
- JWT Overview

### 24. Production & Monitoring — Introduction
- Spring Boot Actuator
- Health Checks
- Metrics
- Application Monitoring

## 🟥 SECTION 4 — PRACTICAL / MINI PROJECT

### 🎓 Student Management REST API

#### Phase 1 — Project Setup
- Spring Initializr
- Maven
- Dependencies
- Project Structure
- Application Configuration

#### Phase 2 — Entity
- Student Entity
- Primary Key
- Database Table

#### Phase 3 — Repository
- Student Repository
- CRUD Operations

#### Phase 4 — Service
- Student Service
- Business Logic
- Dependency Injection

#### Phase 5 — Controller
- REST Controller
- GET API
- POST API
- PUT API
- DELETE API

#### Phase 6 — Request & Response
- Request Body
- Path Variables
- Request Parameters
- JSON
- ResponseEntity
- HTTP Status Codes

#### Phase 7 — DTO
- Student Request DTO
- Student Response DTO

#### Phase 8 — Validation
- Student Validation
- Validation Error Response

#### Phase 9 — Exception Handling
- Student Not Found Exception
- Global Exception Handler
- Standard Error Response

#### Phase 10 — Database
- H2 / MySQL Configuration
- Hibernate
- JPA
- Database CRUD

#### Phase 11 — API Testing
- Postman
- Create Student
- Get All Students
- Get Student by ID
- Update Student
- Delete Student
- Error Cases

#### Phase 12 — Final Architecture

```text
Client / Postman
       ↓
   Controller
       ↓
     DTO
       ↓
    Service
       ↓
   Repository
       ↓
     JPA
       ↓
   Hibernate
       ↓
    MySQL
```

## 🎯 Final Student Outcome

```text
Java
  ↓
OOP
  ↓
Spring
  ↓
IoC + DI + Beans
  ↓
Spring MVC
  ↓
Spring Boot
  ↓
REST API
  ↓
JPA + Hibernate
  ↓
Database
  ↓
CRUD Application
```