References and Primitive Data Types

References and Primitive Data Types:

•Java distinguishes two kinds of entities

•Primitive types

•Objects

•Primitive-type data is stored in primitive-type variables

•Reference variables store the address of an object

•No notion of “object (physically) in the stack”

•No notion of “object (physically) within an object”

Primitive Data Types:

•Represent numbers, characters, boolean values

•Integers: byte, short, int, and long

•Real numbers: float and double

•Characters: char