Developer Portfolio

Java Full Stack Developer Blog

Expert tutorials on Java, Spring Boot, React JS, REST APIs, OOPS & DSA by Manish Kumar, Java Full Stack Developer from Ghaziabad, India.

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Manish Kumar — Java Full Stack Developer

B.Tech Computer Science graduate from Ghaziabad, Uttar Pradesh. Java Full Stack Developer with 3-month internship at Appletree Infotech. Architected Afsha Enterprises e-commerce (www.afshaenterprises.com), ProgrammingWala LMS (www.programmingwala.com), and Rancom Technologies portal (www.rancomtechnologies.com).

Spring Boot

Building a REST API with Spring Boot and MySQL

Complete guide to building production-ready REST APIs using Java Spring Boot, JPA/Hibernate, and MySQL. Covers entity modeling, repository layer, service layer, controllers, and exception handling.

July 5, 2026 · By Manish Kumar

Java OOPS

Java OOPS Concepts Explained with Real Examples

Deep dive into Java Object Oriented Programming — Inheritance, Polymorphism, Encapsulation, and Abstraction with practical real-world code examples relevant to full stack development.

July 12, 2026 · By Manish Kumar

React JS

React JS Integration with Spring Boot Backend

How to connect a React JS frontend with a Java Spring Boot REST API using Axios, CORS configuration, and JWT token-based authentication for secure full stack applications.

July 18, 2026 · By Manish Kumar

DSA

Top Data Structures & Algorithms Every Java Developer Must Know

Essential DSA concepts — Arrays, LinkedLists, Trees, Graphs, Sorting & Searching algorithms — implemented in Java with time complexity analysis for interview preparation.

July 20, 2026 · By Manish Kumar

E-Commerce

Building an E-Commerce Site with Java Spring Boot & Razorpay

Behind-the-scenes walkthrough of building the Afsha Enterprises e-commerce platform (www.afshaenterprises.com) — product catalog, cart management, Razorpay payment gateway integration, and deployment on AWS.

July 22, 2026 · By Manish Kumar

MERN Stack

MERN Stack LMS Development — ProgrammingWala Case Study

Full case study on building the ProgrammingWala Learning Management System (www.programmingwala.com) using MongoDB, Express.js, React JS, and Node.js — architecture, challenges, and deployment decisions.

July 24, 2026 · By Manish Kumar

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