Primitive Data Types in Java Programming Language

Data type is nothing but the type of the data. Each Variable in Java must have certain type associated with it which tells us what kind of data a variable can store.

Data Types in Java Programming Language are classified into two main groups – Primitive and Reference Data Types.

A primitive Data Types are :

1. Data types are predefined by the Java language.
2. Predefined data types are Reserved keyword so we cannot use them as variable name inside program/application
3. Primitive values do not share state with other primitive values.
4. Total Number of Primitive Data Types in Java Programming is 8
5. All Primitive Data Types have respective Wrapper Classes i.e Integer is wrapper class for primitive type int

Primitive Data Types are –

Primitive Data Types in Java :
boolean	char	byte	int
short	long	float	double

Classification of Data Types in Java Programming Language

Data Type and Other Details

Type	Contains	Default	Size
boolean	true or false	false	1 bit
char	Unicode Character	u0000	16 bits
byte	Signed Integer	0	8 bits
short	Signed Integer	0	16 bits
int	Signed Integer	0	32 bits
long	Signed Integer	0	64 bits
float	Floating Number	0.0	32 bit
double	Floating Number	0.0	64 bit