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Elayaraj C
Elayaraj C

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Java Full Stack Developer (Fresher)

🔹 1. Core Java (Very Important)

  • OOPs concepts (Inheritance, Polymorphism, Abstraction, Encapsulation)
  • Data Types, Loops, Conditions
  • Collections Framework (List, Set, Map, etc.)
  • Exception Handling
  • Multithreading (basic understanding)
  • Java 8 features: Streams, Lambdas, Functional interfaces, Optional
  • String, StringBuilder, StringBuffer

🔹 2. Java Backend Technologies

** Spring Core:** Dependency Injection, Bean Life Cycle

**Spring Boot:**
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  • Annotations (@RestController, @Autowired, @Service, etc.)
  • REST API creation
  • Application properties/yml
  • CRUD operations with database

Spring Data JPA:

  • @Entity, @id, @GeneratedValue

  • JpaRepository, Query methods

    Hibernate Basics (Optional if using JPA)

🔹 3. Database (Backend Integration)

  • SQL (Important)
  • Basic queries: SELECT, JOIN, GROUP BY, ORDER BY, etc.
  • Normalization
  • CRUD operations
  • Relational Databases: MySQL, PostgreSQL
  • Basics of connecting DB to Spring Boot

🔹 4. Frontend Technologies

  • HTML, CSS: Forms, Layouts, Flex/Grid
  • JavaScript (Basic):
  • Functions, Events, DOM Manipulation
  • ES6 features (let/const, arrow functions)
  • ReactJS (or Angular basics if you prefer):
  • Components
  • Props, State
  • Event handling
  •     Conditional rendering
useEffect, useState hooks (if React)

    OR: Thymeleaf (for Java-based templating)

🔹 5. Tools and Technologies

  • Maven/Gradle – Build tools
  • Git/GitHub – Version control
  • Postman – API testing
  • Lombok – for clean code in Java (@Getter, @setter, etc.)
  • Basic Unit Testing: JUnit

🔹 6. Soft Skills & General Questions

  • Ability to explain your project clearly (even if small)
  • Why you want to be a Java Full Stack Developer
  • Your learning attitude and problem-solving skills
  • Version control: basic git commands

🔹 Optional but Helpful

  • Deployment basics (e.g., using Heroku, Netlify)
  • RESTful principles
  • JWT Token basics for security
  • JSON vs XML
  • Understanding of Agile/Scrum

✅ Suggestion for Practice:

  • Create a mini project (e.g., Employee Management System, Book Store App) using:
  • Spring Boot + React or HTML/JS
  • CRUD operations
  • MySQL or PostgreSQL
  • GitHub repository

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