Udemy – Mastering Dagger: From Internals to Advanced Concepts 2025

Welcome to the course, the ultimate course to master Dependency Injection (DI) using Dagger — from fundamental concepts to deep internal workings.
Whether you’re a beginner exploring DI for the first time or an experienced Android developer aiming to understand how Dagger truly works under the hood, this course takes you step-by-step through real-world examples, architecture best practices, and advanced internal mechanisms.

You’ll not only learn how to use Dagger — you’ll learn how it builds, generates, and manages dependencies internally, enabling you to design highly scalable, testable, and maintainable Android applications with confidence.

What You’ll Learn:

• The core principles of Dependency Injection and why it matters.
• Setting up and configuring Dagger in Android projects from scratch.
• Understanding Modules, Components, Scopes, and Qualifiers.
• Deep dive into Dagger’s internal code generation and annotation processing (APT).
• Writing clean, testable code with proper dependency management.

Who This Course Is For:

• Android/Kotlin/Java developers who want to master dependency injection.
• Developers switching from Hilt who want to understand Dagger’s internals.
• Beginner’s, Intermediate and senior developers who aim to write scalable architectures.
• Anyone who wants to go from using Dagger to truly understanding how it works.

Prerequisites:

• Basic understanding of Android development (Kotlin/Java).
• No prior experience with Dagger required — we start from scratch.
• A passion for writing clean and maintainable code.

• Android Developer
• Java Developer
• Kotlin Developer
• Software engineers