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Java Backend Developer with Cloud and Frontend basics Topic List

1. Core Java

• Basics,Data Types, Operators, Control Structures
• OOP Concepts: Inheritance, Polymorphism, Abstraction, Encapsulation
• Exception Handling
• Array, String
• Collections Framework (List, Set, Map, Queue)
• Java 8 Features (Streams, Lambda, Functional Interfaces, Optional class)
• Multithreading & Concurrency
• Input/Output & File Handling

2. Advanced Java

• JDBC (Java Database Connectivity)
• Design Patterns (Singleton, Factory and Builder)
• MVC Architecture
• Session Management (Cookies, HttpSession)
• Debugging

3. Spring Framework Ecosystem

• Spring Core: IoC, Dependency Injection, Bean Lifecycle, Autowiring
• Spring MVC: Controllers, ViewResolvers, Form Handling
• Spring Boot:
  • Auto Configuration
  • Spring Boot Starters
  • RESTful Web Services (GET, POST, PUT, DELETE)
  • Exception Handling in Spring boot
  • Spring Security
  • Profiles, Properties, Logging

4. Spring Data JPA & Hibernate

• ORM Basics
• Entity Mapping: @Entity, @Table, @Id, Mapping, etc.
• JPQL and Native Queries
• Spring Data JPA Repositories
• Transaction Management
• Lazy vs Eager Fetching

5. Database

• Relational Databases: MySQL
  • Joins, Indexes, Normalization
  • Stored Procedures & Triggers, Views

6. Front-End Development

• HTML5, CSS3

7. API & Web Services

• RESTful Web Services (Design & Implementation using Spring Boot)
• JSON / XML Handling
• API Versioning
• Postman for Testing APIs
• Swagger / OpenAPI Documentation

8. Security

• Authentication vs Authorization
• Spring Security Basics
  • UserDetailsService, BCryptPasswordEncoder
  • JWT (JSON Web Tokens)
  • Role-Based Access Control (RBAC)
• OAuth2 (Optional / Advanced)

9. DevOps & Build Tools

• Build Tools: Maven / Gradle
• Version Control: Git, GitHub / GitLab
• CI/CD Basics: Jenkins or GitHub Actions
• Docker (Containerizing Java Apps)
• Monitoring: Logback, Actuator, Prometheus, Grafana

10. Testing

• JUnit 5
• Mockito (Unit & Integration Testing)
• Test-Driven Development (TDD) Basics

11. Project & Architecture

• N-Tier Architecture
• Microservices Overview (Spring Cloud, Eureka, API Gateway)
• Real-world Projects:
  • E-Commerce App
  • Employee Management System
  • Blog or Portfolio Website

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