How many primitive data types in Java? code example

Example 1: all data types in java

Data Type	Size	Stores
byte		1 byte	whole numbers from -128 to 127
short		2 bytes	whole numbers from -32,768 to 32,767
int			4 bytes	whole numbers from -2,147,483,648 to 2,147,483,647
long		8 bytes	whole numbers from -9,223,372,036,854,775,808 to 9,223,372,036,854,775,807
float		4 bytes	fractional numbers; sufficient for storing 6 to 7 decimal digits
double		8 bytes	fractional numbers; sufficient for storing 15 decimal digits
boolean		1 bit	true or false values
char		2 bytes	single character/letter or ASCII values

Example 2: non primitive data types in java

Non-Primitive Data Types: These data types are not actually defined by 
the programming language but are created by the programmer. They are 
also called “reference variables” or “object references” since they 
refer to a memory location which stores the data.
  
All classes are non-primitive data types.
Example : Object, String, Integer, Boolean, etc...