Welcome to the Ranch
Have a look at the
Campbell Ritchie Classification of Methods. The methods in the Arrays class do not take any information from anywhere in an Arrays objecy, nor do they send any information to anything in an Arrays object. So they can be
static.
You can try creating an Arrays object to see whether you can get any information into or out of it, and you can't.
So what is the point of an Arrays object? So they have prevented you creating an Arrays object in the first place.