Java Fundamentals
Learn Java: the language behind countless Android apps, enterprise services, and high-frequency trading systems. Strong static types, classes from day one, and a vast standard library. Every lesson is hands-on with real javac execution.
beginner15 lessons6 chapters15 graded exercisesJava
No sign-up needed for lesson 1 · certificate on completion · sign up to save progress
What you’ll be able to do
Chapter by chapter. Every lesson ends in a graded exercise.
- Getting Started
- Strings
- Control Flow
- Methods and Classes
- Collections
- Inheritance and Interfaces
Taught in Java, graded on a real executor.
Curriculum
6 chapters, 15 lessons. Each lesson is a short read and a graded exercise.
- 1Hello, WorldRead · exercise
- 2Variables and TypesRead · exercise
- 3Numbers and MathRead · exercise