Handcrafted Notes for Java Developers
PDF notes crafted from 300+ YouTube videos. Buy once, download anytime from your dashboard. No subscriptions. No expiry.
Java Core Mastery Notes
Complete Java fundamentals — OOP, Collections, Generics, Streams, Lambda, Multithreading. Perfect for beginners and interview prep.
Spring Boot Complete Notes
REST API, Spring Security, JPA/Hibernate, Unit Testing, Docker basics, and deployment strategies. Production-ready knowledge.
Microservices Architecture Notes
Eureka, API Gateway, Feign Client, Circuit Breaker, Kafka messaging, and Docker Compose. Build scalable systems.
Java Interview Q&A (200 Questions)
Hand-picked top 200 Java interview questions with detailed answers. Organised by topic and company (Amazon, TCS, Infosys, Flipkart).
System Design Interview Notes
HLD and LLD patterns, design WhatsApp/Uber/Netflix. Covers scalability, databases, caching, load balancing.
DSA in Java — Complete Guide
Arrays, Linked Lists, Trees, Graphs, DP, Sorting — all with Java implementations and LeetCode problem mappings.