What is meant by Instance Variables and Class Variables (CoreJava)

Question :What is meant by Instance Variables and Class Variables (CoreJava)
Answer :instance variables Any item of data that is associated with a particular
object. Each instance of a class has its own copy of the instance variables
defined in the class. Also called a field. class variables A data item
associated with a particular class as a whole--not with particular instances
of the class. Class variables are defined in class definitions. Also called a
static field