I know we are using

Factory instead of JFactory

I would like to know if there is an easy way to know the mapping.

I'd also like to understand if any have been deprecated or replaced. Is there a good resource for this?

  • ROOT/libraries/classmap.php
    – Lodder
    Apr 27, 2021 at 5:33

1 Answer 1


You can find the equivalent of Joomla! classes here:

Your IDE will show when a method is deprecated in your code if you set as dependency the Joomla 4.0 git directory cloned locally.


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