Java Notes

JVM Deep-Dive

Comprehensive guide to JVM architecture, memory management, class loading, JIT compilation, and garbage collection algorithms.

Advanced

Collections Framework

List, Set, Map interfaces and their implementations. Performance characteristics and use cases.

Intermediate

Multithreading

Thread creation, synchronization, locks, executors, and concurrent collections.

Advanced

OOP Concepts

Encapsulation, inheritance, polymorphism, abstraction, and design principles.

Fundamentals

Spring Framework

Dependency injection, Spring Boot, Spring MVC, and REST API development.

Framework

Design Patterns

Singleton, Factory, Builder, Observer, and other essential design patterns.

Advanced

Java 8+ Features

Lambda expressions, streams, functional interfaces, and new date/time API.

Modern Java

Exception Handling

Checked vs unchecked exceptions, try-catch blocks, custom exceptions, and best practices.

Fundamentals