What an Object Has That a Class Does Not

Five things this topic established, and where each one was.

What the topic established, and which card it was on
The thing	Where
A class describes; `new` creates; a reference points	A Class Is a Description
A constructor is named for the class, declares no return type, and runs inside `new`	The Method That Runs Before the Object Exists
Constructors are chosen by argument list, and `this(...)` chains them	Two Constructors for One Order
Writing any constructor removes the free no-argument one	Why Adding a Constructor Broke Every new Order()
`static` belongs to the class; instance members belong to one object	static Belongs to the Class

An object has its own copy of every instance field, and that is the only thing it has that the class does not. Everything else in this topic follows from asking which of the two something belongs to.

Java
Object-Oriented Programming