{# Course schema: this is what turns a blue link into a result that shows the provider and the level. Only facts that are actually true go in here. #}
ExpoCoder Sign in Start free

Java

Learn Java from zero, with no programming background needed. Write your first program, then build up through variables, decisions, loops, arrays and real classes, one small runnable example at a time.

24 lessons about 8 hours Easy Free with a free account
Learn it by writing it.

Every lesson runs real code in your browser, checked the moment you submit. No installing anything, no setup, no waiting.

Start Java free

What this course covers

  1. What Is Java?
  2. How Java Actually Runs
  3. Your First Java Program
  4. Variables and Types
  5. Why Java Is Strict About Types
  6. Joining Text and Numbers
  7. Doing Arithmetic
  8. Working With Text
  9. Making Decisions
  10. Combining Conditions
  11. Choosing With switch
  12. Repeating With a for Loop
  13. Looping With while
  14. break and continue
  15. Arrays: Many Values, One Name
  16. Looping Through an Array
  17. Methods: Naming a Job
  18. Same Name, Different Inputs
  19. Classes and Objects
  20. Constructors: Setting Up an Object
  21. Keeping Data Safe
  22. Inheritance: Building on What Exists
  23. One Name, Many Behaviours
  24. Lists and Maps That Grow

Other courses

Computational Thinking

Learn to think like a problem-solver before you write a single line of code. Break big …

Basic Python

Your first Python course, no experience needed. Learn variables, loops, functions, and …

Intermediate Python

Level up your Python with comprehensions, lambdas, error handling, files, modules, and …

Object-Oriented Programming

Master OOP in Python: classes, objects, inheritance, polymorphism, encapsulation, abstr…

Games with Pygame

Build your own 2D games from scratch: the game loop, sprites, movement, collisions, and…

Advanced Python

Go deeper in Python: decorators, generators, type hints, regex, JSON, SQLite, testing, …

Data Structures & Algorithms

Core CS: arrays, lists, stacks, queues, hash tables, trees, graphs, sorting, searching,…

Rust

Learn Rust from zero, with no systems background needed. Write your first program, then…

C#

Learn C# from zero, with no programming background needed. Write your first program, th…

C++

Learn C++ from zero, with no programming background needed. Start with your first progr…

C

Learn C from zero, with no programming background needed. The language that Unix, Linux…

React

Learn React, the most popular JavaScript UI library. From your first component to hooks…

See all courses