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Primitives (data type)

8 types

representing numbers

byte, short, int, long, float, double

char (single unicode character)

boolean (true or false)

Variables

Declared Type

Reference Type

Primitive Type

Name / Identifier

must be unique

begin w/ java letter

Cannot be Java keyword

Declaring Variable

1st: type

2nd: name

3rd: semi colon

Constants

values cannot be change

keyword: final

Literals

literals of primitive types

String literals

Null literal

Integer literals

floating-point literals

character literals

boolean literals

assign values to byte, short, int, and long types

has whole number part, decimal pt, fractional part, exponent (optional)

float

double

32 bits

f_or_F

64 bits

d_or_D

A unicode character or an escape sequence inclosed in single quotes

Has 2 values, represented by the literals : true and false

letters, numbers or symbols which are enclosed within two quotation marks

The null is a literal of the null type