What are the data types in Java?

Data types specify the different sizes and values that can be stored in the variable.
There are two types of data types in Java:

1) Primitive data types : There are eight primitive data types in Java

Data Type	Size	Range	Default Values
boolean	1 bit	true or flase	flase
char	2 bytes	one character/letter or 0 to 65,536 (unsigned) , ASCII values	\u0000
byte	1 byte	128 to 127	0
short	2 bytes	32,768 to 32,767	0
int	4 bytes	2,147,483,648 to 2,147,483,647	0
long	8 bytes	9,223,372,036,854,775,808 to 9,223,372,036,854,775,807	0
float	4 bytes	6 to 7 significant decimal digits	0.0
double	8 bytes	15 significant decimal digits	0.0

2) Non-Primitive Data Types : Non-primitive data types are created by the programmer, and are not defined by Java language.

Examples : Strings, Arrays, Classes, Interface etc.
String myStrVar = “Hello, It’s String Variable”;

Difference between primitive data types and non primitive data types

Primitive Data Type	Non-primitive Data type
This are predefined in Java	This are created by the programmer and is not defined by Java
A primitive type always has a value	Non-primitive types can be null.
Primitive type starts with a lowercase letter.	Non-primitive types start with an uppercase letter.