in reply to
Re: Tutorial: Introduction to Object-Oriented Programming
in thread Tutorial: Introduction to Object-Oriented Programming
You're right. Java has primitives that aren't objects. It does provide ways to promote primitives to real objects, though. For example, if you have an integer (primitive, doesn't really receive messages), you can promote it to an Integer (does receive messages).
There's a little handwaving in here, because you can implement even primitive math in terms of messages.