Superclass (or) class definition of Java Primitive?

Question

If Object is superclass of everything, then why does it treat primitives different? Is there any class that is predefined for int, float...(data types)? What is the superclass or where is the class definition for primitives?

Answer 1

There is no class definition for Java primitives. There are, however, convenience classes that act as sort of wrappers around primitives, e.g. Integer and Double. But even these derive from Object