Is there a way to create a new class in a desired location without using the mouse in IntelliJ?
I understand there is no keyboard binding in the default keymap.
I do this a lot, and I don't have an insert key on my laptop, so I made my own keybinding for it. You can do this by opening Settings > IDE Settings > Keymap and navigating to Main menu > File > New... (I would recommend typing "new" into the search box - that will narrow it down considerably).
Then you can add a new keyboard shortcut for it by double clicking on that item and selecting Add Keyboard Shortcut.