CS Academy provides educational material and activities for learning computer science.
learncs.online
LearnCS.online provides interactive lessons for learning Java and Kotlin.
About learncs.online
LearnCS.online is a web-based introduction to computer science that provides interactive lessons for learning Java or Kotlin. The homepage lists 75 focused lessons from "Hello, world" to graph recursion, 952 editable and runnable code examples, and 3,067 interactive explanations from 338 instructors, including 201 hours of live coding walkthroughs. It also states 563 programming problems covering core language features and 384,583 debugging challenges that train users to fix small mistakes. Pricing information is not provided on the homepage.
Key features
- Interactive lessons for learning Java or Kotlin.
- 75 focused lessons from "Hello, world" to graph recursion.
- 952 editable and runnable code examples.
- 3,067 interactive explanations from 338 instructors.
- 563 programming problems covering core language features.
- 384,583 debugging challenges to fix small mistakes.
Best for: Learners who want to study Java or Kotlin and computer science fundamentals through interactive web lessons and practice problems.
Good for
- Lessons cover from "Hello, world" to graph recursion in Java and Kotlin.
- Includes 952 runnable code examples and 3,067 interactive explanations from 338 instructors.
- Provides 563 programming problems and 384,583 debugging challenges for practice.
Watch out for
- Content is provided in English.
- Pricing information is not stated on the homepage.
learncs.online at a glance
- Website
- learncs.online
- Category
- Education & Learning › Learn to Code
- Type
- Website
- Pricing
- Not confirmed. Check the site
- Platforms
- Web
- Open source
- Not stated
- Language
- English
- Last checked
- Oct 6, 2026 · Online when checked
- Listed
- Oct 5, 2026
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learncs.online FAQ
What programming languages can I learn?
Java or Kotlin.
What topics are covered?
75 focused lessons from "Hello, world" to graph recursion, plus programming problems and debugging challenges covering core language features.
Are there runnable code examples?
Yes, the site lists 952 editable and runnable code examples.
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Tell us and an editor will check it.
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