How to make error pages 404,500,502, etc. in Spring through javaconfig?

Question

Java

you need to add the error pages "mentioned in the title above" to the admin and to the client side!
the design in the client part and the admin panel are actually different and different error pages are needed!
plz tell me how to implement this, otherwise in google examples using xml!)

Answer 1

First link in google for spring 404 page:
stackoverflow