Full Stack Java Course in Mumbai

OOP Concepts

Classes, objects, and constructors are tested with code-writing exercises, not just MCQs — interviewers want to see you design a class, not recite a definition

Collections & Generics

Inheritance vs composition is a judgment question senior interviewers ask — "favor composition over inheritance" is a principle you will understand with real examples

Exception Handling

Interfaces vs abstract classes is asked in almost every Java interview — knowing when to use which, with a concrete example, is the expected standard

Multithreading

Exception handling (checked vs unchecked, try-with-resources) is where many self-taught developers have gaps — covered from first principles here

Java 17+ Features

Collections framework (ArrayList, HashMap, HashSet) usage and time complexity is tested at every level of Java interview — used instinctively after this module

Spring Core & IoC

Lambda expressions and functional interfaces are asked in nearly every modern Java interview — you will write them confidently, not just recognise them

REST API with Spring Boot

Stream operations (filter, map, collect, reduce) are how real Java codebases process collections in 2025 — covered with realistic data, not toy examples

Spring Security & JWT

Optional is used to avoid NullPointerException in production code — knowing the correct usage pattern (not just wrapping everything) is what experienced interviewers look for

Spring Data JPA

Method references and the Stream API together are what separates a candidate who "knows Java 8 exists" from one who actually uses it

PostgreSQL & Hibernate

The biggest mistake self-taught Spring developers make is putting all logic in the controller — this module builds the layered mental model (Controller, Service, Repository) from the start

MySQL

@Autowired and dependency injection are the two concepts interviewers probe deepest — most candidates can recite the annotation but cannot explain the IoC container underneath

Query Optimization

Spring Boot auto-configuration and starter dependencies are what make Spring projects fast to set up — understanding what is happening "under the hood" is what separates levels of candidates

Database Migrations with Flyway

REST controller design (request mapping, response entities, status codes) is what you will be asked to review in a code interview at most Java shops

React Components & Hooks

Entity relationships (@OneToMany, @ManyToOne, @ManyToMany) are tested with real schema design questions — drawing the relationship correctly on a whiteboard is the expected standard

REST API Integration

Lazy vs eager loading is a senior-level Java interview question — understanding the N+1 query problem and how to avoid it is what distinguishes experienced candidates

State Management

Custom query methods and JPQL are how real Spring applications go beyond basic CRUD — covered with the patterns enterprise codebases actually use

Axios & Error Handling

Transactions (@Transactional) and when they matter is a question that trips up junior candidates — clarified with real failure scenarios here

Microservices Architecture

Most "Spring Boot course" graduates cannot secure an API from scratch — this module ensures you genuinely can

Spring Cloud

JWT token generation, validation, and refresh strategy is in every full stack technical interview and in almost every real Spring application

AI API Integration (OpenAI)

Role-based access control (@PreAuthorize, method security) is how real enterprise APIs restrict access — understanding it makes you useful from Day 1 in a team

Docker & Kubernetes Basics

Password hashing with BCrypt is a security baseline that interviewers specifically check for — storing plain text passwords is an instant red flag in a code review

Maven & Gradle Build Tools

CORS configuration is the most common integration issue between a Spring backend and any frontend — solved properly here, not worked around

Jenkins CI/CD

GitHub Copilot is already in the toolchain of TCS, Infosys, and Wipro engineering teams — you will encounter it on Day 1 in many jobs

AWS EC2 & S3

Understanding the limitations of AI-generated Java code (incorrect annotations, outdated Spring patterns) is as important as using it quickly

Application Monitoring

API documentation with Swagger/OpenAPI is what professional Java teams expect — covered here so your API is something a frontend developer can actually use