Foundations
Variables, logic, loops — and how to read an error message.
Javapex
Zero to seasoned full-stack Java developer.
Write and run real Java right on your Mac. Ten modules take you from your first line of code to a deployed, full-stack app — at your own pace, with instant feedback every step of the way.
Download on the Mac App StoremacOS · Apple Silicon
The full journey
Ten modules. Zero to deployed full-stack — nothing skipped.
Objects & Classes
Model the world with classes, objects, and clean design.
Data & Collections
Lists, sets, maps, and generics — choosing the right tool.
Modern Java
Lambdas, streams, records, and pattern matching.
Tooling & Craft
Real Gradle projects, JUnit tests, and the pro workflow.
Persistence
SQL, the repository pattern, JDBC, and transactions.
Spring Boot
The framework that runs Java’s backend world.
The Web Frontend
Server-rendered pages with Thymeleaf and HTMX.
Engineering Maturity
Logging, validation, and code a senior signs off on.
Capstone: Ship It
Build, containerize, and deploy a real application.
How it works
You don’t just read about code. You write it, run it, and prove it works.
Real code, real compiler
Your Java runs on a real runtime built into the app — right on your Mac.
Instant feedback
Every exercise is checked automatically the moment you run it.
Your pace, your path
Learn in order, or test out of modules you already know.
Proof you finished
Earn a Certificate of Completion when you reach the end.