Q:

What is the difference between private method and final method in java?

What I am asking "In Functionality point of view 'privateandfinal` methods are not overriden". 
Can we use Only one Access Modifier i.e Private in functionality point of view?

A:

private is about accessibility like public or protected or no modifier.
final is about modification during inheritance.

private methods are not just accessible from the outside of the class.
final methods can not be overridden by the child class.

As private method is not accessible from the child classes it also cannot be overridden but final method can or can not be accessible based on the access modifier.

