How to remove ALL the file-extensions from being shown?

[The_Prodigy1982]

I know that by default OSX shows all the file-extensions...
But, if possible I want to hide them all, since I don't like it that much.
I know that I can hide them by clicking each file and go to ' get info', but surely there must be a way to hide ALL extensions at once?

 

[Just_Me_D]

1. Choose Finder - Preferences, and then click Advanced.
2. Select or deselect ?Show all filename extensions.?