When comparing Codelearn vs Learn Java, the Slant community recommends Learn Java for most people. In the question“What are the best websites to learn to code?” Learn Java is ranked 38th while Codelearn is ranked 50th. The most important reason people chose Learn Java is:
Learn Java provides an editor right on the web page where you can practice your code and follow along with the tutorial.
Specs
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Pros
Pro Runs in the browser
Since setting up the development environment can be difficult for a beginner, Codelearn provides a complete Rails environment on the browser ("Codelearn Playground").
Pro Browser-based
Learn Java provides an editor right on the web page where you can practice your code and follow along with the tutorial.
Pro Free
Learn Java is completely free to use and will always be free.
Pro Simple interface
The interface is very straight-forward and well layed out.
Cons
Con Requires some knowledge of linux
The Playground emulates a linux environment, so it's best to have some experience with linux or you may find yourself lost.
Con Editor not easily adjustable
The code editor at the bottom of the page, where you follow along with the tutorial, is fairly small and provides no way to adjust the size.