Learning the printf method

Showed me that you can format text using arguments %s representing a
string. The order does matter with these, meaning the first %s
corresponds to the first set of parenthesis and respectively the same
for the second.
Created an addition application

This application takes two integers from the user and adds them together
and stores their value in the variable "Sum" then outputs Sum to the
user. This shows us how to use a scanner to get input from the console
as well as addition within java.