Effective Java — Practice & Code Examples

Language: Java
IDE / Editor: Visual Studio Code

This repository contains my personal practice and code examples developed while studying the book "Effective Java" by Joshua Bloch (3rd Edition).

💡 My Approach to Learning

Written from scratch: None of the code in this repository is a blind copy-paste. Every pattern, rule, and concept was thoroughly analyzed and then written entirely from scratch based on my own understanding of the logic.
Focus on deep understanding: By implementing the examples independently without looking at the book's exact source code, I focused on building muscle memory and deeply internalizing Java best practices.
Isolated drafts: Each folder acts as an independent mini-project or draft focused on a specific Item or Chapter from the book.

The project is structured into folders representing specific concepts and items from the book:

Bounded Wildcards (PECS) — Practical application of the Producer Extends, Consumer Super principle.
Varargs and Generics — Combining variable arguments and generics safely.
Lazy Initialization — Different approaches to lazy initialization and thread safety.
Exception Translation — Transforming low-level exceptions into higher-level abstractions.
Do not Return Null — Returning empty collections or optionals instead of nulls.
Chapter 7 — Comprehensive practice with Lambdas and Streams.
...and other folders covering key Java design principles and guidelines.