Why aren't static methods considered good OO p

Question

I'm reading Programming Scala. At the beginning of chapter 4, the author comments that Java supports static methods, which are "not-so-pure OO concepts." Why is this so?

Answer 1

Static methods are not so pure OO concepts because they can be invoked without an object actually being associated with them. You use the class itself. You invoke them like this Classname.method(...);