# Topics To Cover

1. Core Java concepts:

* OOPs: Inheritance, Polymorphism, Encapsulation, Abstraction
* Multithreading: Thread creation and synchronization, Inter-thread communication, Deadlock, Race condition
* Collections: List, Set, Map, Iterator, Comparator, Concurrent Collections
* Exception handling: Try-catch-finally blocks, Exception hierarchy, Checked and Unchecked exceptions

2. Advanced Java concepts:

* Servlets: Request and Response objects, Servlet lifecycle, Request dispatching, Session Management
* JSP: JSP lifecycle, Expression Language, JSTL, Custom Tag Libraries
* JDBC: DriverManager, Connection, Statement, PreparedStatement, ResultSet
* JPA/Hibernate: Entity, EntityManager, PersistenceContext, Transactions, HQL

3. Spring Framework:

* Spring Boot: Autoconfiguration, Starter Dependencies, Spring Boot Actuator, Embedded Containers
* Spring MVC: Controllers, Views, Model, Binding, Validation
* Spring Data: Repositories, Query Methods, Pagination, Auditing, Transactions
* Spring Security: Authentication, Authorization, Security Filters, CSRF, CORS

4. RESTful web services and API design:

* HTTP Methods: GET, POST, PUT, DELETE
* Resource URI Design: URI structure, Resource representations, Query Parameters
* Message Formats: JSON, XML
* API Documentation: Swagger, API Blueprint

5. Microservices architecture and design patterns:

* API Gateway: Benefits, Architecture, Load balancing, Routing
* Circuit Breaker: Purpose, Implementation, Circuit Breaker Pattern
* Service Registry: Purpose, Benefits, Examples

6. Cloud-based solutions:

* AWS or Azure: Basic services offered, Elastic Beanstalk, EC2, S3, RDS, Lambda
* Docker: Containerization, Dockerfiles, Docker Compose, Docker Swarm
* Kubernetes: Cluster management, Kubernetes Objects, Deployment, Service

7. SQL and NoSQL databases:

* SQL: Basic Queries, Joins, Aggregations, Subqueries, Indexes
* NoSQL: Key-Value stores, Document stores, Column-family stores, Graph databases

8. Testing frameworks:

* JUnit: Test fixtures, Assertions, Parameterized Tests
* Mockito: Mocking, Spying, Verification, Stubbing
* TestNG: Annotations, Data Providers, Assertion Types, Test Groups

9. Agile methodologies:

* Scrum: Sprint Planning, Sprint Review, Daily Standup, Sprint Retrospective
* Kanban: Visualization, Work in Progress Limits, Pull-based Workflow

10. System design and scalability:

* Load balancing: Round Robin, Weighted Round Robin, Least Connections, IP Hash
* Caching: Types of caching, Invalidation, Cache Eviction Policies