CodeGym vs. Codebay vs. Codédex vs. JavaScript Comparison Chart

Codegym's Java programming course consists of 4 quests, Java Syntax, Java Core, Java Collections, and Multithreading. These quests contain more than five hundred mini-lessons and more than a thousand exercises. The difficulty of the tasks gradually increases, just like the weight on the bar at the gym, a small increase in the load every day will ultimately produce noticeable results. By the end of the course, you'll have gained 500-1000 hours of programming experience. The course will introduce you to all the essential topics about Java, including Java syntax, standard types, arrays, lists, collections, generics, exceptions, and how to work with threads, files, the network, and the Internet. You'll also learn about OOP, serialization, recursion, annotations, the most common design patterns, and much more. You can return to your learning anytime, since we save your progress through the course. If you need to take a break while solving a big task, no worries.

Codédex is an online, interactive coding-learning platform that uses a gamified, adventure-style format to teach real programming languages and skills. Learners travel through “fantasy lands” corresponding to languages such as Python, HTML/CSS, JavaScript, React, and command-line tools (Git, GitHub), proceeding at their own pace while earning experience points, badges, and unlocking new regions as they progress. It combines bite-sized interactive lessons, an in-browser code editor for instant practice, and project-based tutorials to give users hands-on experience rather than just theory. With more than 200 hours of content, Codédex supports beginners with no prior coding experience and gradually builds up to more advanced topics, reinforcing learning through code challenges, exercises, and real-world projects. It fosters a supportive community through forums and events like monthly challenges and hackathons, helping motivate learners and provide peer support.