Welcome to J

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Newcomers J Promotional Video J Playground Installing J Learning J

J has many uses, but the predominant one is how it will affect the way that you think about problems and make you a better programmer.
You will start to see solutions that do not rely on a great deal of language ceremony. Using loops will become the old way of solving problems.
This is not always an easy transition but, with the resources accessed from this page,
you will discover new ways to program a computer that are both simpler and more powerful than you may ever have imagined.

Welcome to J? (video) J Playground Installing J Learning J
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3 minutes and 8 seconds
that might change your life!
Try out J on your browser.
No need to download!
How do you get J running?
Step-by-step instructions.
All the ways to learn J!
Books, essays, labs, videos.